From 5c71aac64380f74f34cd9a158cc2b1d9122b5ceb Mon Sep 17 00:00:00 2001
From: "Carol (Nichols || Goulding)" <carol.nichols@gmail.com>
Date: Tue, 26 Mar 2019 16:21:36 -0400
Subject: [PATCH] Extract code listings to separate files

---
 ci/dictionary.txt                             |   3 +
 .../listing-02-01/Cargo.lock                  |   6 +
 .../listing-02-01/Cargo.toml                  |   9 +
 .../listing-02-01/src/main.rs                 |  14 +
 .../listing-02-02/Cargo.lock                  |  87 +++
 .../listing-02-02/Cargo.toml                  |  10 +
 .../listing-02-02/src/main.rs                 |  14 +
 .../listing-02-03/Cargo.lock                  |  87 +++
 .../listing-02-03/Cargo.toml                  |  10 +
 .../listing-02-03/src/main.rs                 |  27 +
 .../listing-02-04/Cargo.lock                  |  87 +++
 .../listing-02-04/Cargo.toml                  |  10 +
 .../listing-02-04/output.txt                  |  21 +
 .../listing-02-04/src/main.rs                 |  32 ++
 .../listing-02-05/Cargo.lock                  |  87 +++
 .../listing-02-05/Cargo.toml                  |  10 +
 .../listing-02-05/src/main.rs                 |  44 ++
 .../listing-02-06/Cargo.lock                  |  87 +++
 .../listing-02-06/Cargo.toml                  |  10 +
 .../listing-02-06/src/main.rs                 |  34 ++
 .../no-listing-01-cargo-new/Cargo.lock        |   6 +
 .../no-listing-01-cargo-new/Cargo.toml        |   9 +
 .../no-listing-01-cargo-new/output.txt        |   5 +
 .../no-listing-01-cargo-new/src/main.rs       |   3 +
 .../no-listing-02-without-expect/Cargo.lock   |   6 +
 .../no-listing-02-without-expect/Cargo.toml   |   9 +
 .../no-listing-02-without-expect/output.txt   |  12 +
 .../no-listing-02-without-expect/src/main.rs  |  13 +
 .../Cargo.lock                                |  87 +++
 .../Cargo.toml                                |  10 +
 .../src/main.rs                               |  33 ++
 .../no-listing-04-looping/Cargo.lock          |  87 +++
 .../no-listing-04-looping/Cargo.toml          |  10 +
 .../no-listing-04-looping/src/main.rs         |  40 ++
 .../no-listing-05-quitting/Cargo.lock         |  87 +++
 .../no-listing-05-quitting/Cargo.toml         |  10 +
 .../no-listing-05-quitting/src/main.rs        |  38 ++
 .../listing-03-01/Cargo.lock                  |   4 +
 .../listing-03-01/Cargo.toml                  |   7 +
 .../listing-03-01/src/main.rs                 |   3 +
 .../listing-03-02/Cargo.lock                  |   4 +
 .../listing-03-02/Cargo.toml                  |   7 +
 .../listing-03-02/output.txt                  |   5 +
 .../listing-03-02/src/main.rs                 |  10 +
 .../listing-03-03/Cargo.lock                  |   4 +
 .../listing-03-03/Cargo.toml                  |   7 +
 .../listing-03-03/src/main.rs                 |  11 +
 .../listing-03-04/Cargo.lock                  |   4 +
 .../listing-03-04/Cargo.toml                  |   7 +
 .../listing-03-04/output.txt                  |   9 +
 .../listing-03-04/src/main.rs                 |  10 +
 .../listing-03-05/Cargo.lock                  |   4 +
 .../listing-03-05/Cargo.toml                  |   7 +
 .../listing-03-05/src/main.rs                 |   7 +
 .../Cargo.lock                                |   6 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  20 +
 .../src/main.rs                               |   6 +
 .../no-listing-02-adding-mut/Cargo.lock       |   6 +
 .../no-listing-02-adding-mut/Cargo.toml       |   7 +
 .../no-listing-02-adding-mut/output.txt       |   6 +
 .../no-listing-02-adding-mut/src/main.rs      |   6 +
 .../no-listing-03-shadowing/Cargo.lock        |   6 +
 .../no-listing-03-shadowing/Cargo.toml        |   7 +
 .../no-listing-03-shadowing/output.txt        |   5 +
 .../no-listing-03-shadowing/src/main.rs       |   9 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   6 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  17 +
 .../src/main.rs                               |   6 +
 .../no-listing-06-floating-point/Cargo.lock   |   4 +
 .../no-listing-06-floating-point/Cargo.toml   |   7 +
 .../no-listing-06-floating-point/src/main.rs  |   5 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  16 +
 .../no-listing-08-boolean/Cargo.lock          |   4 +
 .../no-listing-08-boolean/Cargo.toml          |   7 +
 .../no-listing-08-boolean/src/main.rs         |   5 +
 .../no-listing-09-char/Cargo.lock             |   4 +
 .../no-listing-09-char/Cargo.toml             |   7 +
 .../no-listing-09-char/src/main.rs            |   5 +
 .../no-listing-10-tuples/Cargo.lock           |   4 +
 .../no-listing-10-tuples/Cargo.toml           |   7 +
 .../no-listing-10-tuples/src/main.rs          |   3 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   7 +
 .../no-listing-12-tuple-indexing/Cargo.lock   |   4 +
 .../no-listing-12-tuple-indexing/Cargo.toml   |   7 +
 .../no-listing-12-tuple-indexing/src/main.rs  |   9 +
 .../no-listing-13-arrays/Cargo.lock           |   4 +
 .../no-listing-13-arrays/Cargo.toml           |   7 +
 .../no-listing-13-arrays/src/main.rs          |   3 +
 .../no-listing-14-array-indexing/Cargo.lock   |   4 +
 .../no-listing-14-array-indexing/Cargo.toml   |   7 +
 .../no-listing-14-array-indexing/src/main.rs  |   6 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |   6 +
 .../src/main.rs                               |   8 +
 .../no-listing-16-functions/Cargo.lock        |   4 +
 .../no-listing-16-functions/Cargo.toml        |   7 +
 .../no-listing-16-functions/output.txt        |   6 +
 .../no-listing-16-functions/src/main.rs       |   9 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |   5 +
 .../src/main.rs                               |   7 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |   6 +
 .../src/main.rs                               |   8 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   3 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  10 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |   5 +
 .../src/main.rs                               |   9 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   9 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  21 +
 .../src/main.rs                               |   9 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   3 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   4 +
 .../no-listing-26-if-true/Cargo.lock          |   4 +
 .../no-listing-26-if-true/Cargo.toml          |   7 +
 .../no-listing-26-if-true/output.txt          |   5 +
 .../no-listing-26-if-true/src/main.rs         |   9 +
 .../no-listing-27-if-false/Cargo.lock         |   4 +
 .../no-listing-27-if-false/Cargo.toml         |   7 +
 .../no-listing-27-if-false/output.txt         |   5 +
 .../no-listing-27-if-false/src/main.rs        |  11 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  17 +
 .../src/main.rs                               |   7 +
 .../no-listing-29-if-not-equal-0/Cargo.lock   |   4 +
 .../no-listing-29-if-not-equal-0/Cargo.toml   |   7 +
 .../no-listing-29-if-not-equal-0/src/main.rs  |   7 +
 .../no-listing-30-else-if/Cargo.lock          |   4 +
 .../no-listing-30-else-if/Cargo.toml          |   7 +
 .../no-listing-30-else-if/output.txt          |   5 +
 .../no-listing-30-else-if/src/main.rs         |  13 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  24 +
 .../src/main.rs                               |  11 +
 .../no-listing-32-loop/Cargo.lock             |   6 +
 .../no-listing-32-loop/Cargo.toml             |   7 +
 .../no-listing-32-loop/src/main.rs            |   5 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  13 +
 .../no-listing-34-for-range/Cargo.lock        |   4 +
 .../no-listing-34-for-range/Cargo.toml        |   7 +
 .../no-listing-34-for-range/src/main.rs       |   6 +
 .../Cargo.lock                                |   6 +
 .../Cargo.toml                                |   9 +
 .../output.txt                                |  17 +
 .../src/main.rs                               |   3 +
 .../listing-04-01/Cargo.lock                  |   4 +
 .../listing-04-01/Cargo.toml                  |   7 +
 .../listing-04-01/src/main.rs                 |   9 +
 .../listing-04-02/Cargo.lock                  |   4 +
 .../listing-04-02/Cargo.toml                  |   7 +
 .../listing-04-02/src/main.rs                 |   6 +
 .../listing-04-03/Cargo.lock                  |   4 +
 .../listing-04-03/Cargo.toml                  |   7 +
 .../listing-04-03/src/main.rs                 |  23 +
 .../listing-04-04/Cargo.lock                  |   4 +
 .../listing-04-04/Cargo.toml                  |   7 +
 .../listing-04-04/src/main.rs                 |  29 +
 .../listing-04-05/Cargo.lock                  |   4 +
 .../listing-04-05/Cargo.toml                  |   7 +
 .../listing-04-05/src/main.rs                 |  13 +
 .../listing-04-06/Cargo.lock                  |   4 +
 .../listing-04-06/Cargo.toml                  |   7 +
 .../listing-04-06/output.txt                  |  16 +
 .../listing-04-06/src/main.rs                 |   9 +
 .../listing-04-07/Cargo.lock                  |   4 +
 .../listing-04-07/Cargo.toml                  |   7 +
 .../listing-04-07/src/main.rs                 |  22 +
 .../listing-04-08/Cargo.lock                  |   4 +
 .../listing-04-08/Cargo.toml                  |   7 +
 .../listing-04-08/src/main.rs                 |  24 +
 .../listing-04-09/Cargo.lock                  |   4 +
 .../listing-04-09/Cargo.toml                  |   7 +
 .../listing-04-09/src/main.rs                 |  31 ++
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   9 +
 .../no-listing-02-string-scope/Cargo.lock     |   4 +
 .../no-listing-02-string-scope/Cargo.toml     |   7 +
 .../no-listing-02-string-scope/src/main.rs    |  10 +
 .../no-listing-03-string-move/Cargo.lock      |   4 +
 .../no-listing-03-string-move/Cargo.toml      |   7 +
 .../no-listing-03-string-move/src/main.rs     |   6 +
 .../Cargo.lock                                |   6 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  19 +
 .../src/main.rs                               |   8 +
 .../no-listing-05-clone/Cargo.lock            |   4 +
 .../no-listing-05-clone/Cargo.toml            |   7 +
 .../no-listing-05-clone/src/main.rs           |   8 +
 .../no-listing-06-copy/Cargo.lock             |   4 +
 .../no-listing-06-copy/Cargo.toml             |   7 +
 .../no-listing-06-copy/src/main.rs            |   8 +
 .../no-listing-07-reference/Cargo.lock        |   4 +
 .../no-listing-07-reference/Cargo.toml        |   7 +
 .../no-listing-07-reference/src/main.rs       |  15 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  14 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   9 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  19 +
 .../src/main.rs                               |  10 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  12 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  20 +
 .../src/main.rs                               |  11 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  13 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  16 +
 .../src/main.rs                               |   9 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  13 +
 .../no-listing-16-no-dangle/Cargo.lock        |   4 +
 .../no-listing-16-no-dangle/Cargo.toml        |   7 +
 .../no-listing-16-no-dangle/src/main.rs       |  11 +
 .../no-listing-17-slice/Cargo.lock            |   4 +
 .../no-listing-17-slice/Cargo.toml            |   7 +
 .../no-listing-17-slice/src/main.rs           |   8 +
 .../no-listing-18-first-word-slice/Cargo.lock |   4 +
 .../no-listing-18-first-word-slice/Cargo.toml |   7 +
 .../src/main.rs                               |  16 +
 .../no-listing-19-slice-error/Cargo.lock      |   4 +
 .../no-listing-19-slice-error/Cargo.toml      |   7 +
 .../no-listing-19-slice-error/output.txt      |  20 +
 .../no-listing-19-slice-error/src/main.rs     |  23 +
 .../listing-05-01/Cargo.lock                  |   4 +
 .../listing-05-01/Cargo.toml                  |   7 +
 .../listing-05-01/src/main.rs                 |  11 +
 .../listing-05-02/Cargo.lock                  |   4 +
 .../listing-05-02/Cargo.toml                  |   7 +
 .../listing-05-02/src/main.rs                 |  17 +
 .../listing-05-03/Cargo.lock                  |   4 +
 .../listing-05-03/Cargo.toml                  |   7 +
 .../listing-05-03/src/main.rs                 |  19 +
 .../listing-05-04/Cargo.lock                  |   4 +
 .../listing-05-04/Cargo.toml                  |   7 +
 .../listing-05-04/src/main.rs                 |  21 +
 .../listing-05-05/Cargo.lock                  |   4 +
 .../listing-05-05/Cargo.toml                  |   7 +
 .../listing-05-05/src/main.rs                 |  21 +
 .../listing-05-06/Cargo.lock                  |   4 +
 .../listing-05-06/Cargo.toml                  |   7 +
 .../listing-05-06/src/main.rs                 |  24 +
 .../listing-05-07/Cargo.lock                  |   4 +
 .../listing-05-07/Cargo.toml                  |   7 +
 .../listing-05-07/src/main.rs                 |  23 +
 .../listing-05-08/Cargo.lock                  |   4 +
 .../listing-05-08/Cargo.toml                  |   7 +
 .../listing-05-08/output.txt                  |   5 +
 .../listing-05-08/src/main.rs                 |  17 +
 .../listing-05-09/Cargo.lock                  |   4 +
 .../listing-05-09/Cargo.toml                  |   7 +
 .../listing-05-09/src/main.rs                 |  12 +
 .../listing-05-10/Cargo.lock                  |   4 +
 .../listing-05-10/Cargo.toml                  |   7 +
 .../listing-05-10/src/main.rs                 |  17 +
 .../listing-05-11/Cargo.lock                  |   4 +
 .../listing-05-11/Cargo.toml                  |   7 +
 .../listing-05-11/output.txt                  |  18 +
 .../listing-05-11/src/main.rs                 |  10 +
 .../listing-05-12/Cargo.lock                  |   4 +
 .../listing-05-12/Cargo.toml                  |   7 +
 .../listing-05-12/output.txt                  |   5 +
 .../listing-05-12/src/main.rs                 |  11 +
 .../listing-05-13/Cargo.lock                  |   4 +
 .../listing-05-13/Cargo.toml                  |   7 +
 .../listing-05-13/src/main.rs                 |  20 +
 .../listing-05-14/Cargo.lock                  |   4 +
 .../listing-05-14/Cargo.toml                  |   7 +
 .../listing-05-14/src/main.rs                 |   8 +
 .../listing-05-15/Cargo.lock                  |   4 +
 .../listing-05-15/Cargo.toml                  |   7 +
 .../listing-05-15/src/main.rs                 |  26 +
 .../listing-05-16/Cargo.lock                  |   4 +
 .../listing-05-16/Cargo.toml                  |   7 +
 .../listing-05-16/src/main.rs                 |  29 +
 .../no-listing-01-tuple-structs/Cargo.lock    |   4 +
 .../no-listing-01-tuple-structs/Cargo.toml    |   7 +
 .../no-listing-01-tuple-structs/src/main.rs   |   9 +
 .../Cargo.lock                                |   6 +
 .../Cargo.toml                                |   9 +
 .../output.txt                                |  20 +
 .../src/main.rs                               |  15 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  17 +
 .../output-only-01-debug/Cargo.lock           |   4 +
 .../output-only-01-debug/Cargo.toml           |   7 +
 .../output-only-01-debug/output.txt           |  18 +
 .../output-only-01-debug/src/main.rs          |  10 +
 .../output-only-02-pretty-debug/Cargo.lock    |   4 +
 .../output-only-02-pretty-debug/Cargo.toml    |   7 +
 .../output-only-02-pretty-debug/output.txt    |   8 +
 .../output-only-02-pretty-debug/src/main.rs   |  11 +
 .../listing-06-01/Cargo.lock                  |   4 +
 .../listing-06-01/Cargo.toml                  |   7 +
 .../listing-06-01/src/main.rs                 |  23 +
 .../listing-06-02/Cargo.lock                  |   4 +
 .../listing-06-02/Cargo.toml                  |   7 +
 .../listing-06-02/src/main.rs                 |  10 +
 .../listing-06-03/Cargo.lock                  |   4 +
 .../listing-06-03/Cargo.toml                  |   7 +
 .../listing-06-03/src/main.rs                 |  19 +
 .../listing-06-04/Cargo.lock                  |   4 +
 .../listing-06-04/Cargo.toml                  |   7 +
 .../listing-06-04/src/main.rs                 |  17 +
 .../listing-06-05/Cargo.lock                  |   4 +
 .../listing-06-05/Cargo.toml                  |   7 +
 .../listing-06-05/src/main.rs                 |  18 +
 .../listing-06-06/Cargo.lock                  |   4 +
 .../listing-06-06/Cargo.toml                  |   7 +
 .../listing-06-06/src/main.rs                 |   9 +
 .../no-listing-01-defining-enums/Cargo.lock   |   4 +
 .../no-listing-01-defining-enums/Cargo.toml   |   7 +
 .../no-listing-01-defining-enums/src/main.rs  |  22 +
 .../no-listing-02-enum-with-data/Cargo.lock   |   4 +
 .../no-listing-02-enum-with-data/Cargo.toml   |   7 +
 .../no-listing-02-enum-with-data/src/main.rs  |  12 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  12 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  12 +
 .../no-listing-05-methods-on-enums/Cargo.lock |   4 +
 .../no-listing-05-methods-on-enums/Cargo.toml |   7 +
 .../src/main.rs                               |  19 +
 .../no-listing-06-option-examples/Cargo.lock  |   4 +
 .../no-listing-06-option-examples/Cargo.toml  |   7 +
 .../no-listing-06-option-examples/src/main.rs |   8 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  16 +
 .../src/main.rs                               |   8 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  22 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  31 ++
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  16 +
 .../src/main.rs                               |  13 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  12 +
 .../no-listing-12-if-let/Cargo.lock           |   4 +
 .../no-listing-12-if-let/Cargo.toml           |   7 +
 .../no-listing-12-if-let/src/main.rs          |   8 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  24 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  25 +
 .../listing-07-01/Cargo.lock                  |   4 +
 .../listing-07-01/Cargo.toml                  |   7 +
 .../listing-07-01/src/lib.rs                  |  19 +
 .../listing-07-03/Cargo.lock                  |   4 +
 .../listing-07-03/Cargo.toml                  |   7 +
 .../listing-07-03/output.txt                  |  20 +
 .../listing-07-03/src/lib.rs                  |  13 +
 .../listing-07-05/Cargo.lock                  |   4 +
 .../listing-07-05/Cargo.toml                  |   7 +
 .../listing-07-05/output.txt                  |  20 +
 .../listing-07-05/src/lib.rs                  |  13 +
 .../listing-07-07/Cargo.lock                  |   4 +
 .../listing-07-07/Cargo.toml                  |   7 +
 .../listing-07-07/src/lib.rs                  |  17 +
 .../listing-07-08/Cargo.lock                  |   4 +
 .../listing-07-08/Cargo.toml                  |   7 +
 .../listing-07-08/src/lib.rs                  |  14 +
 .../listing-07-09/Cargo.lock                  |   4 +
 .../listing-07-09/Cargo.toml                  |   7 +
 .../listing-07-09/src/lib.rs                  |  27 +
 .../listing-07-10/Cargo.lock                  |   4 +
 .../listing-07-10/Cargo.toml                  |   7 +
 .../listing-07-10/src/lib.rs                  |  11 +
 .../listing-07-11/Cargo.lock                  |   4 +
 .../listing-07-11/Cargo.toml                  |   7 +
 .../listing-07-11/src/lib.rs                  |  17 +
 .../listing-07-12/Cargo.lock                  |   4 +
 .../listing-07-12/Cargo.toml                  |   7 +
 .../listing-07-12/src/lib.rs                  |  17 +
 .../listing-07-13/Cargo.lock                  |   4 +
 .../listing-07-13/Cargo.toml                  |   7 +
 .../listing-07-13/src/lib.rs                  |  17 +
 .../listing-07-14/Cargo.lock                  |   4 +
 .../listing-07-14/Cargo.toml                  |   7 +
 .../listing-07-14/src/main.rs                 |   6 +
 .../listing-07-15/Cargo.lock                  |   4 +
 .../listing-07-15/Cargo.toml                  |   7 +
 .../listing-07-15/src/lib.rs                  |  18 +
 .../listing-07-16/Cargo.lock                  |   4 +
 .../listing-07-16/Cargo.toml                  |   7 +
 .../listing-07-16/src/lib.rs                  |  18 +
 .../listing-07-17/Cargo.lock                  |   4 +
 .../listing-07-17/Cargo.toml                  |   7 +
 .../listing-07-17/src/lib.rs                  |  17 +
 .../listing-07-18/Cargo.lock                  |  89 ++++
 .../listing-07-18/Cargo.toml                  |   8 +
 .../listing-07-18/src/main.rs                 |  28 +
 .../listing-07-19/Cargo.lock                  |   4 +
 .../listing-07-19/Cargo.toml                  |   7 +
 .../listing-07-19/src/lib.rs                  |   2 +
 .../listing-07-20/Cargo.lock                  |   4 +
 .../listing-07-20/Cargo.toml                  |   7 +
 .../listing-07-20/src/lib.rs                  |   1 +
 .../listing-07-21-and-22/Cargo.lock           |   4 +
 .../listing-07-21-and-22/Cargo.toml           |   7 +
 .../src/front_of_house.rs                     |   3 +
 .../listing-07-21-and-22/src/lib.rs           |   9 +
 .../no-listing-01-use-std-unnested/Cargo.lock |  87 +++
 .../no-listing-01-use-std-unnested/Cargo.toml |  10 +
 .../src/main.rs                               |  29 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/front_of_house.rs                     |   1 +
 .../src/front_of_house/hosting.rs             |   1 +
 .../src/lib.rs                                |   9 +
 .../listing-08-01/Cargo.lock                  |   4 +
 .../listing-08-01/Cargo.toml                  |   7 +
 .../listing-08-01/src/main.rs                 |   5 +
 .../listing-08-02/Cargo.lock                  |   4 +
 .../listing-08-02/Cargo.toml                  |   7 +
 .../listing-08-02/src/main.rs                 |   5 +
 .../listing-08-03/Cargo.lock                  |   4 +
 .../listing-08-03/Cargo.toml                  |   7 +
 .../listing-08-03/src/main.rs                 |  10 +
 .../listing-08-04/Cargo.lock                  |   4 +
 .../listing-08-04/Cargo.toml                  |   7 +
 .../listing-08-04/src/main.rs                 |  10 +
 .../listing-08-05/Cargo.lock                  |   4 +
 .../listing-08-05/Cargo.toml                  |   7 +
 .../listing-08-05/src/main.rs                 |  13 +
 .../listing-08-06/Cargo.lock                  |   4 +
 .../listing-08-06/Cargo.toml                  |   7 +
 .../listing-08-06/src/main.rs                 |   8 +
 .../listing-08-07/Cargo.lock                  |   4 +
 .../listing-08-07/Cargo.toml                  |   7 +
 .../listing-08-07/output.txt                  |  20 +
 .../listing-08-07/src/main.rs                 |  11 +
 .../listing-08-08/Cargo.lock                  |   4 +
 .../listing-08-08/Cargo.toml                  |   7 +
 .../listing-08-08/src/main.rs                 |   8 +
 .../listing-08-09/Cargo.lock                  |   4 +
 .../listing-08-09/Cargo.toml                  |   7 +
 .../listing-08-09/src/main.rs                 |   8 +
 .../listing-08-10/Cargo.lock                  |   4 +
 .../listing-08-10/Cargo.toml                  |   7 +
 .../listing-08-10/src/main.rs                 |  15 +
 .../listing-08-11/Cargo.lock                  |   4 +
 .../listing-08-11/Cargo.toml                  |   7 +
 .../listing-08-11/src/main.rs                 |   5 +
 .../listing-08-12/Cargo.lock                  |   4 +
 .../listing-08-12/Cargo.toml                  |   7 +
 .../listing-08-12/src/main.rs                 |  10 +
 .../listing-08-13/Cargo.lock                  |   4 +
 .../listing-08-13/Cargo.toml                  |   7 +
 .../listing-08-13/src/main.rs                 |   5 +
 .../listing-08-14/Cargo.lock                  |   4 +
 .../listing-08-14/Cargo.toml                  |   7 +
 .../listing-08-14/src/main.rs                 |  19 +
 .../listing-08-15/Cargo.lock                  |   4 +
 .../listing-08-15/Cargo.toml                  |   7 +
 .../listing-08-15/src/main.rs                 |   6 +
 .../listing-08-16/Cargo.lock                  |   4 +
 .../listing-08-16/Cargo.toml                  |   7 +
 .../listing-08-16/src/main.rs                 |   8 +
 .../listing-08-17/Cargo.lock                  |   4 +
 .../listing-08-17/Cargo.toml                  |   7 +
 .../listing-08-17/src/main.rs                 |   6 +
 .../listing-08-18/Cargo.lock                  |   4 +
 .../listing-08-18/Cargo.toml                  |   7 +
 .../listing-08-18/src/main.rs                 |   7 +
 .../listing-08-19/Cargo.lock                  |   4 +
 .../listing-08-19/Cargo.toml                  |   7 +
 .../listing-08-19/output.txt                  |  16 +
 .../listing-08-19/src/main.rs                 |   6 +
 .../listing-08-20/Cargo.lock                  |   4 +
 .../listing-08-20/Cargo.toml                  |   7 +
 .../listing-08-20/src/main.rs                 |  10 +
 .../listing-08-21/Cargo.lock                  |   4 +
 .../listing-08-21/Cargo.toml                  |   7 +
 .../listing-08-21/src/main.rs                 |  10 +
 .../listing-08-22/Cargo.lock                  |   4 +
 .../listing-08-22/Cargo.toml                  |   7 +
 .../listing-08-22/src/main.rs                 |  13 +
 .../listing-08-23/Cargo.lock                  |   4 +
 .../listing-08-23/Cargo.toml                  |   7 +
 .../listing-08-23/src/main.rs                 |  13 +
 .../listing-08-24/Cargo.lock                  |   4 +
 .../listing-08-24/Cargo.toml                  |   7 +
 .../listing-08-24/src/main.rs                 |  12 +
 .../listing-08-25/Cargo.lock                  |   4 +
 .../listing-08-25/Cargo.toml                  |   7 +
 .../listing-08-25/src/main.rs                 |  13 +
 .../listing-08-26/Cargo.lock                  |   4 +
 .../listing-08-26/Cargo.toml                  |   7 +
 .../listing-08-26/src/main.rs                 |  16 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   9 +
 .../no-listing-02-format/Cargo.lock           |   4 +
 .../no-listing-02-format/Cargo.toml           |   7 +
 .../no-listing-02-format/src/main.rs          |   9 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  14 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |   6 +
 .../src/main.rs                               |   5 +
 .../listing-09-01/Cargo.lock                  |   6 +
 .../listing-09-01/Cargo.toml                  |   7 +
 .../listing-09-01/output.txt                  |   6 +
 .../listing-09-01/src/main.rs                 |   5 +
 .../listing-09-03/Cargo.lock                  |   4 +
 .../listing-09-03/Cargo.toml                  |   7 +
 .../listing-09-03/src/main.rs                 |   5 +
 .../listing-09-04/Cargo.lock                  |   4 +
 .../listing-09-04/Cargo.toml                  |   7 +
 .../listing-09-04/output.txt                  |   6 +
 .../listing-09-04/src/main.rs                 |  12 +
 .../listing-09-05/Cargo.lock                  |   4 +
 .../listing-09-05/Cargo.toml                  |   7 +
 .../listing-09-05/src/main.rs                 |  17 +
 .../listing-09-06/Cargo.lock                  |   4 +
 .../listing-09-06/Cargo.toml                  |   7 +
 .../listing-09-06/src/main.rs                 |  25 +
 .../listing-09-07/Cargo.lock                  |   4 +
 .../listing-09-07/Cargo.toml                  |   7 +
 .../listing-09-07/src/main.rs                 |  16 +
 .../listing-09-08/Cargo.lock                  |   4 +
 .../listing-09-08/Cargo.toml                  |   7 +
 .../listing-09-08/src/main.rs                 |  17 +
 .../listing-09-09/Cargo.lock                  |   4 +
 .../listing-09-09/Cargo.toml                  |   7 +
 .../listing-09-09/src/main.rs                 |  12 +
 .../listing-09-10/Cargo.lock                  |  89 ++++
 .../listing-09-10/Cargo.toml                  |   8 +
 .../listing-09-10/src/main.rs                 |  56 ++
 .../no-listing-01-panic/Cargo.lock            |   4 +
 .../no-listing-01-panic/Cargo.toml            |   7 +
 .../no-listing-01-panic/output.txt            |   6 +
 .../no-listing-01-panic/src/main.rs           |   3 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  17 +
 .../src/main.rs                               |   7 +
 .../no-listing-03-closures/Cargo.lock         |   4 +
 .../no-listing-03-closures/Cargo.toml         |   7 +
 .../no-listing-03-closures/src/main.rs        |  14 +
 .../no-listing-04-unwrap/Cargo.lock           |   4 +
 .../no-listing-04-unwrap/Cargo.toml           |   7 +
 .../no-listing-04-unwrap/src/main.rs          |   5 +
 .../no-listing-05-expect/Cargo.lock           |   4 +
 .../no-listing-05-expect/Cargo.toml           |   7 +
 .../no-listing-05-expect/src/main.rs          |   5 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  17 +
 .../src/main.rs                               |   5 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   8 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   7 +
 .../Cargo.lock                                |  89 ++++
 .../Cargo.toml                                |   8 +
 .../src/main.rs                               |  46 ++
 .../listing-10-01/Cargo.lock                  |   4 +
 .../listing-10-01/Cargo.toml                  |   7 +
 .../listing-10-01/src/main.rs                 |  18 +
 .../listing-10-02/Cargo.lock                  |   4 +
 .../listing-10-02/Cargo.toml                  |   7 +
 .../listing-10-02/src/main.rs                 |  25 +
 .../listing-10-03/Cargo.lock                  |   4 +
 .../listing-10-03/Cargo.toml                  |   7 +
 .../listing-10-03/src/main.rs                 |  31 ++
 .../listing-10-04/Cargo.lock                  |   4 +
 .../listing-10-04/Cargo.toml                  |   7 +
 .../listing-10-04/src/main.rs                 |  43 ++
 .../listing-10-05/Cargo.lock                  |   4 +
 .../listing-10-05/Cargo.toml                  |   7 +
 .../listing-10-05/output.txt                  |  18 +
 .../listing-10-05/src/main.rs                 |  23 +
 .../listing-10-06/Cargo.lock                  |   4 +
 .../listing-10-06/Cargo.toml                  |   7 +
 .../listing-10-06/src/main.rs                 |   9 +
 .../listing-10-07/Cargo.lock                  |   4 +
 .../listing-10-07/Cargo.toml                  |   7 +
 .../listing-10-07/output.txt                  |  17 +
 .../listing-10-07/src/main.rs                 |   8 +
 .../listing-10-08/Cargo.lock                  |   4 +
 .../listing-10-08/Cargo.toml                  |   7 +
 .../listing-10-08/src/main.rs                 |  10 +
 .../listing-10-09/Cargo.lock                  |   4 +
 .../listing-10-09/Cargo.toml                  |   7 +
 .../listing-10-09/src/main.rs                 |  16 +
 .../listing-10-10/Cargo.lock                  |   4 +
 .../listing-10-10/Cargo.toml                  |   7 +
 .../listing-10-10/src/main.rs                 |  24 +
 .../listing-10-11/Cargo.lock                  |   4 +
 .../listing-10-11/Cargo.toml                  |   7 +
 .../listing-10-11/src/main.rs                 |  22 +
 .../listing-10-12/Cargo.lock                  |   4 +
 .../listing-10-12/Cargo.toml                  |   7 +
 .../listing-10-12/src/lib.rs                  |   3 +
 .../listing-10-13/Cargo.lock                  |   4 +
 .../listing-10-13/Cargo.toml                  |   7 +
 .../listing-10-13/src/lib.rs                  |  31 ++
 .../listing-10-14/Cargo.lock                  |   4 +
 .../listing-10-14/Cargo.toml                  |   7 +
 .../listing-10-14/src/lib.rs                  |  29 +
 .../listing-10-15/Cargo.lock                  |   4 +
 .../listing-10-15/Cargo.toml                  |   7 +
 .../listing-10-15/src/main.rs                 |  23 +
 .../listing-10-16/Cargo.lock                  |   4 +
 .../listing-10-16/Cargo.toml                  |   7 +
 .../listing-10-16/src/lib.rs                  |  25 +
 .../listing-10-17/Cargo.lock                  |   4 +
 .../listing-10-17/Cargo.toml                  |   7 +
 .../listing-10-17/output.txt                  |  19 +
 .../listing-10-17/src/main.rs                 |  14 +
 .../listing-10-18/Cargo.lock                  |   4 +
 .../listing-10-18/Cargo.toml                  |   7 +
 .../listing-10-18/src/main.rs                 |  14 +
 .../listing-10-19/Cargo.lock                  |   4 +
 .../listing-10-19/Cargo.toml                  |   7 +
 .../listing-10-19/src/main.rs                 |  12 +
 .../listing-10-20/Cargo.lock                  |   4 +
 .../listing-10-20/Cargo.toml                  |   7 +
 .../listing-10-20/src/main.rs                 |   7 +
 .../listing-10-21/Cargo.lock                  |   4 +
 .../listing-10-21/Cargo.toml                  |   7 +
 .../listing-10-21/output.txt                  |  16 +
 .../listing-10-21/src/main.rs                 |  17 +
 .../listing-10-22/Cargo.lock                  |   4 +
 .../listing-10-22/Cargo.toml                  |   7 +
 .../listing-10-22/src/main.rs                 |  17 +
 .../listing-10-23/Cargo.lock                  |   4 +
 .../listing-10-23/Cargo.toml                  |   7 +
 .../listing-10-23/src/main.rs                 |  19 +
 .../listing-10-24/Cargo.lock                  |   4 +
 .../listing-10-24/Cargo.toml                  |   7 +
 .../listing-10-24/output.txt                  |  18 +
 .../listing-10-24/src/main.rs                 |  19 +
 .../listing-10-25/Cargo.lock                  |   4 +
 .../listing-10-25/Cargo.toml                  |   7 +
 .../listing-10-25/src/main.rs                 |  11 +
 .../listing-10-26/Cargo.lock                  |   4 +
 .../listing-10-26/Cargo.toml                  |   7 +
 .../listing-10-26/src/main.rs                 |  29 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/lib.rs                                |  29 +
 .../src/main.rs                               |  14 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/lib.rs                                |  27 +
 .../src/main.rs                               |  15 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/lib.rs                                |  24 +
 .../src/main.rs                               |  14 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/lib.rs                                |  35 ++
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/lib.rs                                |  40 ++
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/lib.rs                                |  50 ++
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  29 +
 .../src/main.rs                               |  25 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  13 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  17 +
 .../src/main.rs                               |  14 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  28 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  22 +
 .../listing-11-01/Cargo.lock                  |   4 +
 .../listing-11-01/Cargo.toml                  |   7 +
 .../listing-11-01/output.txt                  |  16 +
 .../listing-11-01/src/lib.rs                  |  11 +
 .../listing-11-03/Cargo.lock                  |   4 +
 .../listing-11-03/Cargo.toml                  |   7 +
 .../listing-11-03/output.txt                  |  22 +
 .../listing-11-03/src/lib.rs                  |  16 +
 .../listing-11-05/Cargo.lock                  |   4 +
 .../listing-11-05/Cargo.toml                  |   7 +
 .../listing-11-05/src/lib.rs                  |  15 +
 .../listing-11-06/Cargo.lock                  |   4 +
 .../listing-11-06/Cargo.toml                  |   7 +
 .../listing-11-06/output.txt                  |  16 +
 .../listing-11-06/src/lib.rs                  |  28 +
 .../listing-11-07/Cargo.lock                  |   4 +
 .../listing-11-07/Cargo.toml                  |   7 +
 .../listing-11-07/output.txt                  |  16 +
 .../listing-11-07/src/lib.rs                  |  17 +
 .../listing-11-08/Cargo.lock                  |   4 +
 .../listing-11-08/Cargo.toml                  |   7 +
 .../listing-11-08/output.txt                  |  16 +
 .../listing-11-08/src/lib.rs                  |  30 ++
 .../listing-11-09/Cargo.lock                  |   4 +
 .../listing-11-09/Cargo.toml                  |   7 +
 .../listing-11-09/src/lib.rs                  |  35 ++
 .../listing-11-10/Cargo.lock                  |   4 +
 .../listing-11-10/Cargo.toml                  |   7 +
 .../listing-11-10/output.txt                  |  25 +
 .../listing-11-10/src/lib.rs                  |  21 +
 .../listing-11-11/Cargo.lock                  |   4 +
 .../listing-11-11/Cargo.toml                  |   7 +
 .../listing-11-11/output.txt                  |  18 +
 .../listing-11-11/src/lib.rs                  |  23 +
 .../listing-11-12/Cargo.lock                  |   4 +
 .../listing-11-12/Cargo.toml                  |   7 +
 .../listing-11-12/src/lib.rs                  |  21 +
 .../listing-11-13/Cargo.lock                  |   4 +
 .../listing-11-13/Cargo.toml                  |   7 +
 .../listing-11-13/output.txt                  |  23 +
 .../listing-11-13/src/lib.rs                  |  17 +
 .../listing-11-13/tests/integration_test.rs   |   6 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  16 +
 .../src/lib.rs                                |  11 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  17 +
 .../src/lib.rs                                |  39 ++
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  22 +
 .../src/lib.rs                                |  37 ++
 .../no-listing-04-bug-in-add-two/Cargo.lock   |   4 +
 .../no-listing-04-bug-in-add-two/Cargo.toml   |   7 +
 .../no-listing-04-bug-in-add-two/output.txt   |  23 +
 .../no-listing-04-bug-in-add-two/src/lib.rs   |  17 +
 .../no-listing-05-greeter/Cargo.lock          |   4 +
 .../no-listing-05-greeter/Cargo.toml          |   7 +
 .../no-listing-05-greeter/src/lib.rs          |  18 +
 .../no-listing-06-greeter-with-bug/Cargo.lock |   4 +
 .../no-listing-06-greeter-with-bug/Cargo.toml |   7 +
 .../no-listing-06-greeter-with-bug/output.txt |  21 +
 .../no-listing-06-greeter-with-bug/src/lib.rs |  18 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  21 +
 .../src/lib.rs                                |  19 +
 .../no-listing-08-guess-with-bug/Cargo.lock   |   4 +
 .../no-listing-08-guess-with-bug/Cargo.toml   |   7 +
 .../no-listing-08-guess-with-bug/output.txt   |  16 +
 .../no-listing-08-guess-with-bug/src/lib.rs   |  31 ++
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  21 +
 .../src/lib.rs                                |  32 ++
 .../no-listing-10-result-in-tests/Cargo.lock  |   4 +
 .../no-listing-10-result-in-tests/Cargo.toml  |   7 +
 .../no-listing-10-result-in-tests/src/lib.rs  |  11 +
 .../no-listing-11-ignore-a-test/Cargo.lock    |   4 +
 .../no-listing-11-ignore-a-test/Cargo.toml    |   7 +
 .../no-listing-11-ignore-a-test/output.txt    |  17 +
 .../no-listing-11-ignore-a-test/src/lib.rs    |  14 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  29 +
 .../src/lib.rs                                |  17 +
 .../tests/common.rs                           |   3 +
 .../tests/integration_test.rs                 |   6 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/lib.rs                                |  17 +
 .../tests/common/mod.rs                       |   3 +
 .../tests/integration_test.rs                 |   9 +
 .../output-only-01-show-output/Cargo.lock     |   4 +
 .../output-only-01-show-output/Cargo.toml     |   7 +
 .../output-only-01-show-output/output.txt     |   6 +
 .../output-only-01-show-output/src/lib.rs     |  21 +
 .../output-only-02-single-test/Cargo.lock     |   4 +
 .../output-only-02-single-test/Cargo.toml     |   7 +
 .../output-only-02-single-test/output.txt     |  10 +
 .../output-only-02-single-test/src/lib.rs     |  23 +
 .../output-only-03-multiple-tests/Cargo.lock  |   4 +
 .../output-only-03-multiple-tests/Cargo.toml  |   7 +
 .../output-only-03-multiple-tests/output.txt  |  11 +
 .../output-only-03-multiple-tests/src/lib.rs  |  23 +
 .../output-only-04-running-ignored/Cargo.lock |   4 +
 .../output-only-04-running-ignored/Cargo.toml |   7 +
 .../output-only-04-running-ignored/output.txt |  16 +
 .../output-only-04-running-ignored/src/lib.rs |  14 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  10 +
 .../src/lib.rs                                |  17 +
 .../tests/integration_test.rs                 |   6 +
 .../listing-12-01/Cargo.lock                  |   4 +
 .../listing-12-01/Cargo.toml                  |   7 +
 .../listing-12-01/output.txt                  |   5 +
 .../listing-12-01/src/main.rs                 |   6 +
 .../listing-12-02/Cargo.lock                  |   4 +
 .../listing-12-02/Cargo.toml                  |   7 +
 .../listing-12-02/output.txt                  |   6 +
 .../listing-12-02/src/main.rs                 |  11 +
 .../listing-12-03/Cargo.lock                  |   4 +
 .../listing-12-03/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-03/poem.txt |   9 +
 .../listing-12-03/src/main.rs                 |  11 +
 .../listing-12-04/Cargo.lock                  |   4 +
 .../listing-12-04/Cargo.toml                  |   7 +
 .../listing-12-04/output.txt                  |  17 +
 .../ch12-an-io-project/listing-12-04/poem.txt |   9 +
 .../listing-12-04/src/main.rs                 |  22 +
 .../listing-12-05/Cargo.lock                  |   4 +
 .../listing-12-05/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-05/poem.txt |   9 +
 .../listing-12-05/src/main.rs                 |  29 +
 .../listing-12-06/Cargo.lock                  |   4 +
 .../listing-12-06/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-06/poem.txt |   9 +
 .../listing-12-06/src/main.rs                 |  34 ++
 .../listing-12-07/Cargo.lock                  |   4 +
 .../listing-12-07/Cargo.toml                  |   7 +
 .../listing-12-07/output.txt                  |   6 +
 .../ch12-an-io-project/listing-12-07/poem.txt |   9 +
 .../listing-12-07/src/main.rs                 |  40 ++
 .../listing-12-08/Cargo.lock                  |   4 +
 .../listing-12-08/Cargo.toml                  |   7 +
 .../listing-12-08/output.txt                  |   6 +
 .../ch12-an-io-project/listing-12-08/poem.txt |   9 +
 .../listing-12-08/src/main.rs                 |  38 ++
 .../listing-12-09/Cargo.lock                  |   4 +
 .../listing-12-09/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-09/poem.txt |   9 +
 .../listing-12-09/src/main.rs                 |  36 ++
 .../listing-12-10/Cargo.lock                  |   4 +
 .../listing-12-10/Cargo.toml                  |   7 +
 .../listing-12-10/output.txt                  |   5 +
 .../ch12-an-io-project/listing-12-10/poem.txt |   9 +
 .../listing-12-10/src/main.rs                 |  42 ++
 .../listing-12-11/Cargo.lock                  |   4 +
 .../listing-12-11/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-11/poem.txt |   9 +
 .../listing-12-11/src/main.rs                 |  50 ++
 .../listing-12-12/Cargo.lock                  |   4 +
 .../listing-12-12/Cargo.toml                  |   7 +
 .../listing-12-12/output.txt                  |  26 +
 .../ch12-an-io-project/listing-12-12/poem.txt |   9 +
 .../listing-12-12/src/main.rs                 |  51 ++
 .../listing-12-13/Cargo.lock                  |   4 +
 .../listing-12-13/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-13/poem.txt |   9 +
 .../listing-12-13/src/lib.rs                  |  36 ++
 .../listing-12-13/src/main.rs                 |  20 +
 .../listing-12-14/Cargo.lock                  |   4 +
 .../listing-12-14/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-14/poem.txt |   9 +
 .../listing-12-14/src/lib.rs                  |  28 +
 .../listing-12-14/src/main.rs                 |  30 ++
 .../listing-12-15/Cargo.lock                  |   4 +
 .../listing-12-15/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-15/poem.txt |   9 +
 .../listing-12-15/src/lib.rs                  |  49 ++
 .../listing-12-15/src/main.rs                 |  19 +
 .../listing-12-16/Cargo.lock                  |   4 +
 .../listing-12-16/Cargo.toml                  |   7 +
 .../listing-12-16/output.txt                  |  23 +
 .../ch12-an-io-project/listing-12-16/poem.txt |   9 +
 .../listing-12-16/src/lib.rs                  |  53 ++
 .../listing-12-16/src/main.rs                 |  19 +
 .../listing-12-17/Cargo.lock                  |   4 +
 .../listing-12-17/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-17/poem.txt |   9 +
 .../listing-12-17/src/lib.rs                  |  53 ++
 .../listing-12-17/src/main.rs                 |  19 +
 .../listing-12-18/Cargo.lock                  |   4 +
 .../listing-12-18/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-18/poem.txt |   9 +
 .../listing-12-18/src/lib.rs                  |  55 ++
 .../listing-12-18/src/main.rs                 |  19 +
 .../listing-12-19/Cargo.lock                  |   4 +
 .../listing-12-19/Cargo.toml                  |   7 +
 .../listing-12-19/output.txt                  |  22 +
 .../ch12-an-io-project/listing-12-19/poem.txt |   9 +
 .../listing-12-19/src/lib.rs                  |  61 +++
 .../listing-12-19/src/main.rs                 |  19 +
 .../listing-12-20/Cargo.lock                  |   4 +
 .../listing-12-20/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-20/poem.txt |   9 +
 .../listing-12-20/src/lib.rs                  |  81 +++
 .../listing-12-20/src/main.rs                 |  19 +
 .../listing-12-21/Cargo.lock                  |   4 +
 .../listing-12-21/Cargo.toml                  |   7 +
 .../listing-12-21/output.txt                  |  23 +
 .../ch12-an-io-project/listing-12-21/poem.txt |   9 +
 .../listing-12-21/src/lib.rs                  |  94 ++++
 .../listing-12-21/src/main.rs                 |  19 +
 .../listing-12-22/Cargo.lock                  |   4 +
 .../listing-12-22/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-22/poem.txt |   9 +
 .../listing-12-22/src/lib.rs                  | 103 ++++
 .../listing-12-22/src/main.rs                 |  19 +
 .../listing-12-23/Cargo.lock                  |   6 +
 .../listing-12-23/Cargo.toml                  |   7 +
 .../listing-12-23/output.txt                  |   6 +
 .../ch12-an-io-project/listing-12-23/poem.txt |   9 +
 .../listing-12-23/src/lib.rs                  | 108 ++++
 .../listing-12-23/src/main.rs                 |  19 +
 .../listing-12-24/Cargo.lock                  |   4 +
 .../listing-12-24/Cargo.toml                  |   7 +
 .../ch12-an-io-project/listing-12-24/poem.txt |   9 +
 .../listing-12-24/src/lib.rs                  | 100 ++++
 .../listing-12-24/src/main.rs                 |  21 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../poem.txt                                  |   9 +
 .../src/main.rs                               |  54 ++
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |   5 +
 .../poem.txt                                  |   9 +
 .../src/lib.rs                                |  63 +++
 .../src/main.rs                               |  19 +
 .../output-only-01-with-args/Cargo.lock       |   4 +
 .../output-only-01-with-args/Cargo.toml       |   7 +
 .../output-only-01-with-args/output.txt       |   5 +
 .../output-only-01-with-args/src/main.rs      |   6 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  16 +
 .../output-only-02-missing-lifetimes/poem.txt |   9 +
 .../src/lib.rs                                |  53 ++
 .../src/main.rs                               |  19 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |   7 +
 .../output-only-03-multiple-matches/poem.txt  |   9 +
 .../src/lib.rs                                |  63 +++
 .../src/main.rs                               |  19 +
 .../output-only-04-no-matches/Cargo.lock      |   4 +
 .../output-only-04-no-matches/Cargo.toml      |   7 +
 .../output-only-04-no-matches/output.txt      |   4 +
 .../output-only-04-no-matches/poem.txt        |   9 +
 .../output-only-04-no-matches/src/lib.rs      |  63 +++
 .../output-only-04-no-matches/src/main.rs     |  19 +
 .../listing-12-23-reproduced/Cargo.lock       |   4 +
 .../listing-12-23-reproduced/Cargo.toml       |   7 +
 .../listing-12-23-reproduced/poem.txt         |   9 +
 .../listing-12-23-reproduced/src/lib.rs       | 104 ++++
 .../listing-12-23-reproduced/src/main.rs      |  19 +
 .../listing-12-24-reproduced/Cargo.lock       |   4 +
 .../listing-12-24-reproduced/Cargo.toml       |   7 +
 .../listing-12-24-reproduced/poem.txt         |   9 +
 .../listing-12-24-reproduced/src/lib.rs       | 100 ++++
 .../listing-12-24-reproduced/src/main.rs      |  25 +
 .../listing-13-01/Cargo.toml                  |   7 +
 .../listing-13-01/src/main.rs                 |  12 +
 .../listing-13-02/Cargo.lock                  |   4 +
 .../listing-13-02/Cargo.toml                  |   7 +
 .../listing-13-02/src/main.rs                 |  22 +
 .../listing-13-03/Cargo.lock                  |   4 +
 .../listing-13-03/Cargo.toml                  |   7 +
 .../listing-13-03/src/main.rs                 |  42 ++
 .../listing-13-04/Cargo.lock                  |   4 +
 .../listing-13-04/Cargo.toml                  |   7 +
 .../listing-13-04/src/main.rs                 |  45 ++
 .../listing-13-05/Cargo.lock                  |   4 +
 .../listing-13-05/Cargo.toml                  |   7 +
 .../listing-13-05/src/main.rs                 |  42 ++
 .../listing-13-06/Cargo.lock                  |   4 +
 .../listing-13-06/Cargo.toml                  |   7 +
 .../listing-13-06/src/main.rs                 |  42 ++
 .../listing-13-07/Cargo.lock                  |   4 +
 .../listing-13-07/Cargo.toml                  |   7 +
 .../listing-13-07/src/main.rs                 |  42 ++
 .../listing-13-08/Cargo.lock                  |   4 +
 .../listing-13-08/Cargo.toml                  |   7 +
 .../listing-13-08/output.txt                  |  20 +
 .../listing-13-08/src/main.rs                 |   8 +
 .../listing-13-09/Cargo.lock                  |   4 +
 .../listing-13-09/Cargo.toml                  |   7 +
 .../listing-13-09/src/main.rs                 |  10 +
 .../listing-13-10/Cargo.lock                  |   4 +
 .../listing-13-10/Cargo.toml                  |   7 +
 .../listing-13-10/src/main.rs                 |  32 ++
 .../listing-13-11/Cargo.lock                  |   4 +
 .../listing-13-11/Cargo.toml                  |   7 +
 .../listing-13-11/src/main.rs                 |  71 +++
 .../listing-13-12/Cargo.lock                  |   4 +
 .../listing-13-12/Cargo.toml                  |   7 +
 .../listing-13-12/src/main.rs                 |   9 +
 .../listing-13-13/Cargo.lock                  |   4 +
 .../listing-13-13/Cargo.toml                  |   7 +
 .../listing-13-13/src/main.rs                 |   7 +
 .../listing-13-14/Cargo.lock                  |   4 +
 .../listing-13-14/Cargo.toml                  |   7 +
 .../listing-13-14/src/main.rs                 |  11 +
 .../listing-13-15/Cargo.lock                  |   4 +
 .../listing-13-15/Cargo.toml                  |   7 +
 .../listing-13-15/src/lib.rs                  |  18 +
 .../listing-13-16/Cargo.lock                  |   4 +
 .../listing-13-16/Cargo.toml                  |   7 +
 .../listing-13-16/src/lib.rs                  |  17 +
 .../listing-13-17/Cargo.lock                  |   4 +
 .../listing-13-17/Cargo.toml                  |   7 +
 .../listing-13-17/output.txt                  |  13 +
 .../listing-13-17/src/main.rs                 |   7 +
 .../listing-13-18/Cargo.lock                  |   4 +
 .../listing-13-18/Cargo.toml                  |   7 +
 .../listing-13-18/src/main.rs                 |   9 +
 .../listing-13-19/Cargo.lock                  |   4 +
 .../listing-13-19/Cargo.toml                  |   7 +
 .../listing-13-19/src/lib.rs                  |  37 ++
 .../listing-13-20/Cargo.lock                  |   4 +
 .../listing-13-20/Cargo.toml                  |   7 +
 .../listing-13-20/src/lib.rs                  |  11 +
 .../listing-13-21/Cargo.lock                  |   4 +
 .../listing-13-21/Cargo.toml                  |   7 +
 .../listing-13-21/src/lib.rs                  |  27 +
 .../listing-13-22/Cargo.lock                  |   4 +
 .../listing-13-22/Cargo.toml                  |   7 +
 .../listing-13-22/src/lib.rs                  |  44 ++
 .../listing-13-23/Cargo.lock                  |   4 +
 .../listing-13-23/Cargo.toml                  |   7 +
 .../listing-13-23/src/lib.rs                  |  53 ++
 .../listing-13-25/Cargo.lock                  |   4 +
 .../listing-13-25/Cargo.toml                  |   7 +
 .../listing-13-25/poem.txt                    |   9 +
 .../listing-13-25/src/lib.rs                  | 100 ++++
 .../listing-13-25/src/main.rs                 |  23 +
 .../listing-13-26/Cargo.lock                  |   4 +
 .../listing-13-26/Cargo.toml                  |   7 +
 .../listing-13-26/poem.txt                    |   9 +
 .../listing-13-26/src/lib.rs                  | 103 ++++
 .../listing-13-26/src/main.rs                 |  17 +
 .../listing-13-27/Cargo.lock                  |   4 +
 .../listing-13-27/Cargo.toml                  |   7 +
 .../listing-13-27/poem.txt                    |   9 +
 .../listing-13-27/src/lib.rs                  | 109 ++++
 .../listing-13-27/src/main.rs                 |  17 +
 .../listing-13-29/Cargo.lock                  |   4 +
 .../listing-13-29/Cargo.toml                  |   7 +
 .../listing-13-29/poem.txt                    |   9 +
 .../listing-13-29/src/lib.rs                  | 101 ++++
 .../listing-13-29/src/main.rs                 |  17 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  23 +
 .../src/lib.rs                                |  45 ++
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  16 +
 .../src/main.rs                               |   9 +
 .../no-listing-03-move-closures/Cargo.lock    |   4 +
 .../no-listing-03-move-closures/Cargo.toml    |   7 +
 .../no-listing-03-move-closures/output.txt    |  22 +
 .../no-listing-03-move-closures/src/main.rs   |  11 +
 .../listing-14-01/Cargo.lock                  |   6 +
 .../listing-14-01/Cargo.toml                  |   7 +
 .../listing-14-01/src/lib.rs                  |  13 +
 .../listing-14-02/Cargo.lock                  |   4 +
 .../listing-14-02/Cargo.toml                  |   7 +
 .../listing-14-02/src/lib.rs                  |  21 +
 .../listing-14-03/Cargo.lock                  |   4 +
 .../listing-14-03/Cargo.toml                  |   7 +
 .../listing-14-03/src/lib.rs                  |  36 ++
 .../listing-14-04/Cargo.lock                  |   4 +
 .../listing-14-04/Cargo.toml                  |   7 +
 .../listing-14-04/src/lib.rs                  |  29 +
 .../listing-14-04/src/main.rs                 |   8 +
 .../listing-14-05/Cargo.lock                  |   4 +
 .../listing-14-05/Cargo.toml                  |   7 +
 .../listing-14-05/src/lib.rs                  |  41 ++
 .../listing-14-06/Cargo.lock                  |   4 +
 .../listing-14-06/Cargo.toml                  |   7 +
 .../listing-14-06/src/lib.rs                  |  33 ++
 .../listing-14-06/src/main.rs                 |  13 +
 .../listing-14-07/add/Cargo.lock              |  13 +
 .../listing-14-07/add/Cargo.toml              |   6 +
 .../listing-14-07/add/add-one/Cargo.toml      |   7 +
 .../listing-14-07/add/add-one/src/lib.rs      |   3 +
 .../listing-14-07/add/adder/Cargo.toml        |   9 +
 .../listing-14-07/add/adder/src/main.rs       |   6 +
 .../add/Cargo.lock                            |   4 +
 .../add/Cargo.toml                            |   5 +
 .../add/adder/Cargo.toml                      |   7 +
 .../add/adder/src/main.rs                     |   3 +
 .../add/Cargo.lock                            |   8 +
 .../add/Cargo.toml                            |   6 +
 .../add/add-one/Cargo.toml                    |   7 +
 .../add/add-one/src/lib.rs                    |   3 +
 .../add/adder/Cargo.toml                      |   9 +
 .../add/adder/src/main.rs                     |   3 +
 .../add/Cargo.lock                            |  94 ++++
 .../add/Cargo.toml                            |   6 +
 .../add/add-one/Cargo.toml                    |   8 +
 .../add/add-one/src/lib.rs                    |   5 +
 .../add/adder/Cargo.toml                      |   9 +
 .../add/adder/src/main.rs                     |   6 +
 .../add/Cargo.lock                            |  13 +
 .../add/Cargo.toml                            |   6 +
 .../add/add-one/Cargo.toml                    |   7 +
 .../add/add-one/src/lib.rs                    |  13 +
 .../add/adder/Cargo.toml                      |   9 +
 .../add/adder/src/main.rs                     |   6 +
 .../output-only-01-adder-crate/add/.gitignore |   1 +
 .../output-only-01-adder-crate/add/Cargo.toml |   5 +
 .../output-only-02-add-one/add/.gitignore     |   1 +
 .../output-only-02-add-one/add/Cargo.lock     |   8 +
 .../output-only-02-add-one/add/Cargo.toml     |   6 +
 .../add/add-one/Cargo.toml                    |   9 +
 .../add/add-one/src/lib.rs                    |   7 +
 .../add/adder/Cargo.toml                      |   9 +
 .../add/adder/src/main.rs                     |   3 +
 .../output-only-03-use-rand/add/Cargo.lock    |  94 ++++
 .../output-only-03-use-rand/add/Cargo.toml    |   6 +
 .../add/add-one/Cargo.toml                    |   8 +
 .../add/add-one/src/lib.rs                    |   5 +
 .../add/adder/Cargo.toml                      |   9 +
 .../add/adder/src/main.rs                     |   7 +
 .../listing-15-01/Cargo.lock                  |   4 +
 .../listing-15-01/Cargo.toml                  |   7 +
 .../listing-15-01/src/main.rs                 |   4 +
 .../listing-15-02/Cargo.lock                  |   4 +
 .../listing-15-02/Cargo.toml                  |   7 +
 .../listing-15-02/src/main.rs                 |   8 +
 .../listing-15-03/Cargo.lock                  |   4 +
 .../listing-15-03/Cargo.toml                  |   7 +
 .../listing-15-03/output.txt                  |  28 +
 .../listing-15-03/src/main.rs                 |  12 +
 .../listing-15-05/Cargo.lock                  |   4 +
 .../listing-15-05/Cargo.toml                  |   7 +
 .../listing-15-05/src/main.rs                 |  13 +
 .../listing-15-06/Cargo.lock                  |   4 +
 .../listing-15-06/Cargo.toml                  |   7 +
 .../listing-15-06/src/main.rs                 |   7 +
 .../listing-15-07/Cargo.lock                  |   4 +
 .../listing-15-07/Cargo.toml                  |   7 +
 .../listing-15-07/src/main.rs                 |   7 +
 .../listing-15-08/Cargo.lock                  |   4 +
 .../listing-15-08/Cargo.toml                  |   7 +
 .../listing-15-08/src/main.rs                 |  12 +
 .../listing-15-09/Cargo.lock                  |   4 +
 .../listing-15-09/Cargo.toml                  |   7 +
 .../listing-15-09/output.txt                  |  14 +
 .../listing-15-09/src/main.rs                 |  17 +
 .../listing-15-10/Cargo.lock                  |   4 +
 .../listing-15-10/Cargo.toml                  |   7 +
 .../listing-15-10/src/main.rs                 |  27 +
 .../listing-15-11/Cargo.lock                  |   4 +
 .../listing-15-11/Cargo.toml                  |   7 +
 .../listing-15-11/src/main.rs                 |   8 +
 .../listing-15-12/Cargo.lock                  |   4 +
 .../listing-15-12/Cargo.toml                  |   7 +
 .../listing-15-12/src/main.rs                 |  28 +
 .../listing-15-13/Cargo.lock                  |   4 +
 .../listing-15-13/Cargo.toml                  |   7 +
 .../listing-15-13/src/main.rs                 |  28 +
 .../listing-15-14/Cargo.lock                  |   4 +
 .../listing-15-14/Cargo.toml                  |   7 +
 .../listing-15-14/output.txt                  |   7 +
 .../listing-15-14/src/main.rs                 |  15 +
 .../listing-15-15/Cargo.lock                  |   4 +
 .../listing-15-15/Cargo.toml                  |   7 +
 .../listing-15-15/output.txt                  |  14 +
 .../listing-15-15/src/main.rs                 |  18 +
 .../listing-15-16/Cargo.lock                  |   4 +
 .../listing-15-16/Cargo.toml                  |   7 +
 .../listing-15-16/output.txt                  |   7 +
 .../listing-15-16/src/main.rs                 |  18 +
 .../listing-15-17/Cargo.lock                  |   4 +
 .../listing-15-17/Cargo.toml                  |   7 +
 .../listing-15-17/output.txt                  |  19 +
 .../listing-15-17/src/main.rs                 |  14 +
 .../listing-15-18/Cargo.lock                  |   4 +
 .../listing-15-18/Cargo.toml                  |   7 +
 .../listing-15-18/src/main.rs                 |  13 +
 .../listing-15-19/Cargo.lock                  |   4 +
 .../listing-15-19/Cargo.toml                  |   7 +
 .../listing-15-19/output.txt                  |   8 +
 .../listing-15-19/src/main.rs                 |  21 +
 .../listing-15-20/Cargo.lock                  |   4 +
 .../listing-15-20/Cargo.toml                  |   7 +
 .../listing-15-20/src/lib.rs                  |  34 ++
 .../listing-15-21/Cargo.lock                  |   4 +
 .../listing-15-21/Cargo.toml                  |   7 +
 .../listing-15-21/output.txt                  |  16 +
 .../listing-15-21/src/lib.rs                  |  67 +++
 .../listing-15-22/Cargo.lock                  |   4 +
 .../listing-15-22/Cargo.toml                  |   7 +
 .../listing-15-22/src/lib.rs                  |  74 +++
 .../listing-15-23/Cargo.lock                  |   4 +
 .../listing-15-23/Cargo.toml                  |   7 +
 .../listing-15-23/output.txt                  |  21 +
 .../listing-15-23/src/lib.rs                  |  72 +++
 .../listing-15-24/Cargo.lock                  |   4 +
 .../listing-15-24/Cargo.toml                  |   7 +
 .../listing-15-24/output.txt                  |   7 +
 .../listing-15-24/src/main.rs                 |  24 +
 .../listing-15-25/Cargo.lock                  |   4 +
 .../listing-15-25/Cargo.toml                  |   7 +
 .../listing-15-25/src/main.rs                 |  20 +
 .../listing-15-26/Cargo.lock                  |   4 +
 .../listing-15-26/Cargo.toml                  |   7 +
 .../listing-15-26/output.txt                  |  11 +
 .../listing-15-26/src/main.rs                 |  44 ++
 .../listing-15-27/Cargo.lock                  |   4 +
 .../listing-15-27/Cargo.toml                  |   7 +
 .../listing-15-27/src/main.rs                 |  24 +
 .../listing-15-28/Cargo.lock                  |   4 +
 .../listing-15-28/Cargo.toml                  |   7 +
 .../listing-15-28/src/main.rs                 |  33 ++
 .../listing-15-29/Cargo.lock                  |   4 +
 .../listing-15-29/Cargo.toml                  |   7 +
 .../listing-15-29/src/main.rs                 |  54 ++
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  16 +
 .../src/main.rs                               |   4 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  17 +
 .../src/main.rs                               |   7 +
 .../listing-16-01/Cargo.lock                  |   4 +
 .../listing-16-01/Cargo.toml                  |   7 +
 .../listing-16-01/src/main.rs                 |  16 +
 .../listing-16-02/Cargo.lock                  |   4 +
 .../listing-16-02/Cargo.toml                  |   7 +
 .../listing-16-02/src/main.rs                 |  18 +
 .../listing-16-03/Cargo.lock                  |   4 +
 .../listing-16-03/Cargo.toml                  |   7 +
 .../listing-16-03/output.txt                  |  29 +
 .../listing-16-03/src/main.rs                 |  11 +
 .../listing-16-04/Cargo.lock                  |   4 +
 .../listing-16-04/Cargo.toml                  |   7 +
 .../listing-16-04/src/main.rs                 |  13 +
 .../listing-16-05/Cargo.lock                  |   4 +
 .../listing-16-05/Cargo.toml                  |   7 +
 .../listing-16-05/src/main.rs                 |  11 +
 .../listing-16-06/Cargo.lock                  |   4 +
 .../listing-16-06/Cargo.toml                  |   7 +
 .../listing-16-06/src/main.rs                 |   5 +
 .../listing-16-07/Cargo.lock                  |   4 +
 .../listing-16-07/Cargo.toml                  |   7 +
 .../listing-16-07/src/main.rs                 |  11 +
 .../listing-16-08/Cargo.lock                  |   4 +
 .../listing-16-08/Cargo.toml                  |   7 +
 .../listing-16-08/src/main.rs                 |  14 +
 .../listing-16-09/Cargo.lock                  |   4 +
 .../listing-16-09/Cargo.toml                  |   7 +
 .../listing-16-09/output.txt                  |  18 +
 .../listing-16-09/src/main.rs                 |  15 +
 .../listing-16-10/Cargo.lock                  |   4 +
 .../listing-16-10/Cargo.toml                  |   7 +
 .../listing-16-10/src/main.rs                 |  25 +
 .../listing-16-11/Cargo.lock                  |   4 +
 .../listing-16-11/Cargo.toml                  |   7 +
 .../listing-16-11/src/main.rs                 |  46 ++
 .../listing-16-12/Cargo.lock                  |   4 +
 .../listing-16-12/Cargo.toml                  |   7 +
 .../listing-16-12/src/main.rs                 |  12 +
 .../listing-16-13/Cargo.lock                  |   4 +
 .../listing-16-13/Cargo.toml                  |   7 +
 .../listing-16-13/output.txt                  |  19 +
 .../listing-16-13/src/main.rs                 |  22 +
 .../listing-16-14/Cargo.lock                  |   4 +
 .../listing-16-14/Cargo.toml                  |   7 +
 .../listing-16-14/output.txt                  |  18 +
 .../listing-16-14/src/main.rs                 |  24 +
 .../listing-16-15/Cargo.lock                  |   4 +
 .../listing-16-15/Cargo.toml                  |   7 +
 .../listing-16-15/src/main.rs                 |  23 +
 .../no-listing-01-join-too-early/Cargo.lock   |   4 +
 .../no-listing-01-join-too-early/Cargo.toml   |   7 +
 .../no-listing-01-join-too-early/src/main.rs  |  18 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  27 +
 .../output-only-01-move-drop/Cargo.lock       |   4 +
 .../output-only-01-move-drop/Cargo.toml       |   7 +
 .../output-only-01-move-drop/output.txt       |  22 +
 .../output-only-01-move-drop/src/main.rs      |  13 +
 listings/ch17-oop/listing-17-01/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-01/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-01/src/lib.rs    |   4 +
 listings/ch17-oop/listing-17-02/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-02/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-02/src/lib.rs    |  33 ++
 listings/ch17-oop/listing-17-03/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-03/src/lib.rs    |   3 +
 listings/ch17-oop/listing-17-04/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-04/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-04/src/lib.rs    |   9 +
 listings/ch17-oop/listing-17-05/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-05/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-05/src/lib.rs    |  17 +
 listings/ch17-oop/listing-17-06/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-06/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-06/src/lib.rs    |  18 +
 listings/ch17-oop/listing-17-07/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-07/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-07/src/lib.rs    |  31 ++
 listings/ch17-oop/listing-17-08/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-08/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-08/src/lib.rs    |  27 +
 listings/ch17-oop/listing-17-08/src/main.rs   |  17 +
 listings/ch17-oop/listing-17-09/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-09/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-09/src/lib.rs    |  27 +
 listings/ch17-oop/listing-17-09/src/main.rs   |  40 ++
 listings/ch17-oop/listing-17-10/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-10/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-10/output.txt    |  16 +
 listings/ch17-oop/listing-17-10/src/lib.rs    |  27 +
 listings/ch17-oop/listing-17-10/src/main.rs   |  11 +
 listings/ch17-oop/listing-17-11/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-11/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-11/src/main.rs   |  20 +
 listings/ch17-oop/listing-17-12/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-12/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-12/src/lib.rs    |  19 +
 listings/ch17-oop/listing-17-12/src/main.rs   |  14 +
 listings/ch17-oop/listing-17-13/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-13/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-13/src/lib.rs    |  30 ++
 listings/ch17-oop/listing-17-13/src/main.rs   |  14 +
 listings/ch17-oop/listing-17-14/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-14/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-14/src/lib.rs    |  34 ++
 listings/ch17-oop/listing-17-14/src/main.rs   |  14 +
 listings/ch17-oop/listing-17-15/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-15/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-15/src/lib.rs    |  54 ++
 listings/ch17-oop/listing-17-15/src/main.rs   |  14 +
 listings/ch17-oop/listing-17-16/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-16/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-16/src/lib.rs    |  85 +++
 listings/ch17-oop/listing-17-16/src/main.rs   |  14 +
 listings/ch17-oop/listing-17-17/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-17/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-17/src/lib.rs    |  82 +++
 listings/ch17-oop/listing-17-17/src/main.rs   |  14 +
 listings/ch17-oop/listing-17-18/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-18/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-18/src/lib.rs    |  94 ++++
 listings/ch17-oop/listing-17-18/src/main.rs   |  14 +
 listings/ch17-oop/listing-17-19/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-19/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-19/src/lib.rs    |  25 +
 listings/ch17-oop/listing-17-20/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-20/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-20/src/lib.rs    |  48 ++
 listings/ch17-oop/listing-17-21/Cargo.lock    |   4 +
 listings/ch17-oop/listing-17-21/Cargo.toml    |   7 +
 listings/ch17-oop/listing-17-21/src/lib.rs    |  43 ++
 listings/ch17-oop/listing-17-21/src/main.rs   |  13 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  16 +
 .../src/lib.rs                                |   3 +
 .../listing-18-01/Cargo.lock                  |   4 +
 .../listing-18-01/Cargo.toml                  |   7 +
 .../listing-18-01/src/main.rs                 |  19 +
 .../listing-18-02/Cargo.lock                  |   4 +
 .../listing-18-02/Cargo.toml                  |   7 +
 .../listing-18-02/src/main.rs                 |  13 +
 .../listing-18-03/Cargo.lock                  |   4 +
 .../listing-18-03/Cargo.toml                  |   7 +
 .../listing-18-03/output.txt                  |   7 +
 .../listing-18-03/src/main.rs                 |   9 +
 .../listing-18-04/Cargo.lock                  |   4 +
 .../listing-18-04/Cargo.toml                  |   7 +
 .../listing-18-04/src/main.rs                 |   5 +
 .../listing-18-05/Cargo.lock                  |   4 +
 .../listing-18-05/Cargo.toml                  |   7 +
 .../listing-18-05/output.txt                  |  17 +
 .../listing-18-05/src/main.rs                 |   5 +
 .../listing-18-06/Cargo.lock                  |   4 +
 .../listing-18-06/Cargo.toml                  |   7 +
 .../listing-18-06/src/main.rs                 |   7 +
 .../listing-18-07/Cargo.lock                  |   4 +
 .../listing-18-07/Cargo.toml                  |   7 +
 .../listing-18-07/src/main.rs                 |   8 +
 .../listing-18-08/Cargo.lock                  |   4 +
 .../listing-18-08/Cargo.toml                  |   7 +
 .../listing-18-08/output.txt                  |  14 +
 .../listing-18-08/src/main.rs                 |   6 +
 .../listing-18-09/Cargo.lock                  |   4 +
 .../listing-18-09/Cargo.toml                  |   7 +
 .../listing-18-09/src/main.rs                 |   8 +
 .../listing-18-10/Cargo.lock                  |   4 +
 .../listing-18-10/Cargo.toml                  |   7 +
 .../listing-18-10/output.txt                  |  15 +
 .../listing-18-10/src/main.rs                 |   7 +
 .../listing-18-11/Cargo.lock                  |   4 +
 .../listing-18-11/Cargo.toml                  |   7 +
 .../listing-18-11/src/main.rs                 |  14 +
 .../listing-18-12/Cargo.lock                  |   4 +
 .../listing-18-12/Cargo.toml                  |   7 +
 .../listing-18-12/src/main.rs                 |  12 +
 .../listing-18-13/Cargo.lock                  |   4 +
 .../listing-18-13/Cargo.toml                  |   7 +
 .../listing-18-13/src/main.rs                 |  12 +
 .../listing-18-14/Cargo.lock                  |   4 +
 .../listing-18-14/Cargo.toml                  |   7 +
 .../listing-18-14/src/main.rs                 |  16 +
 .../listing-18-15/Cargo.lock                  |   4 +
 .../listing-18-15/Cargo.toml                  |   7 +
 .../listing-18-15/src/main.rs                 |  32 ++
 .../listing-18-16/Cargo.lock                  |   4 +
 .../listing-18-16/Cargo.toml                  |   7 +
 .../listing-18-16/src/main.rs                 |  35 ++
 .../listing-18-17/Cargo.lock                  |   4 +
 .../listing-18-17/Cargo.toml                  |   7 +
 .../listing-18-17/src/main.rs                 |   7 +
 .../listing-18-18/Cargo.lock                  |   4 +
 .../listing-18-18/Cargo.toml                  |   7 +
 .../listing-18-18/src/main.rs                 |  17 +
 .../listing-18-19/Cargo.lock                  |   4 +
 .../listing-18-19/Cargo.toml                  |   7 +
 .../listing-18-19/src/main.rs                 |  11 +
 .../listing-18-20/Cargo.lock                  |   4 +
 .../listing-18-20/Cargo.toml                  |   7 +
 .../listing-18-20/src/main.rs                 |   4 +
 .../listing-18-21/Cargo.lock                  |   4 +
 .../listing-18-21/Cargo.toml                  |   7 +
 .../listing-18-21/src/main.rs                 |  11 +
 .../listing-18-22/Cargo.lock                  |   4 +
 .../listing-18-22/Cargo.toml                  |   7 +
 .../listing-18-22/src/main.rs                 |  11 +
 .../listing-18-23/Cargo.lock                  |   4 +
 .../listing-18-23/Cargo.toml                  |   7 +
 .../listing-18-23/src/main.rs                 |  15 +
 .../listing-18-24/Cargo.lock                  |   4 +
 .../listing-18-24/Cargo.toml                  |   7 +
 .../listing-18-24/src/main.rs                 |   9 +
 .../listing-18-25/Cargo.lock                  |   4 +
 .../listing-18-25/Cargo.toml                  |   7 +
 .../listing-18-25/output.txt                  |  15 +
 .../listing-18-25/src/main.rs                 |   9 +
 .../listing-18-26/Cargo.lock                  |   4 +
 .../listing-18-26/Cargo.toml                  |   7 +
 .../listing-18-26/src/main.rs                 |  11 +
 .../listing-18-27/Cargo.lock                  |   4 +
 .../listing-18-27/Cargo.toml                  |   7 +
 .../listing-18-27/src/main.rs                 |  12 +
 .../listing-18-28/Cargo.lock                  |   4 +
 .../listing-18-28/Cargo.toml                  |   7 +
 .../listing-18-28/src/main.rs                 |  11 +
 .../listing-18-29/Cargo.lock                  |   4 +
 .../listing-18-29/Cargo.toml                  |   7 +
 .../listing-18-29/src/main.rs                 |  21 +
 .../no-listing-01-literals/Cargo.lock         |   4 +
 .../no-listing-01-literals/Cargo.toml         |   7 +
 .../no-listing-01-literals/src/main.rs        |  12 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  11 +
 .../no-listing-03-ranges/Cargo.lock           |   4 +
 .../no-listing-03-ranges/Cargo.toml           |   7 +
 .../no-listing-03-ranges/src/main.rs          |  10 +
 .../no-listing-04-ranges-of-char/Cargo.lock   |   4 +
 .../no-listing-04-ranges-of-char/Cargo.toml   |   7 +
 .../no-listing-04-ranges-of-char/src/main.rs  |  11 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  10 +
 .../listing-13-21-reproduced/Cargo.lock       |   4 +
 .../listing-13-21-reproduced/Cargo.toml       |   7 +
 .../listing-13-21-reproduced/src/lib.rs       |  28 +
 .../listing-19-01/Cargo.lock                  |   4 +
 .../listing-19-01/Cargo.toml                  |   7 +
 .../listing-19-01/src/main.rs                 |   8 +
 .../listing-19-02/Cargo.lock                  |   4 +
 .../listing-19-02/Cargo.toml                  |   7 +
 .../listing-19-02/src/main.rs                 |   6 +
 .../listing-19-03/Cargo.lock                  |   4 +
 .../listing-19-03/Cargo.toml                  |   7 +
 .../listing-19-03/src/main.rs                 |  13 +
 .../listing-19-04/Cargo.lock                  |   4 +
 .../listing-19-04/Cargo.toml                  |   7 +
 .../listing-19-04/src/main.rs                 |  12 +
 .../listing-19-05/Cargo.lock                  |   4 +
 .../listing-19-05/Cargo.toml                  |   7 +
 .../listing-19-05/output.txt                  |  23 +
 .../listing-19-05/src/main.rs                 |  15 +
 .../listing-19-06/Cargo.lock                  |   4 +
 .../listing-19-06/Cargo.toml                  |   7 +
 .../listing-19-06/src/main.rs                 |  20 +
 .../listing-19-07/Cargo.lock                  |   4 +
 .../listing-19-07/Cargo.toml                  |   7 +
 .../listing-19-07/src/main.rs                 |  12 +
 .../listing-19-08/Cargo.lock                  |   4 +
 .../listing-19-08/Cargo.toml                  |   7 +
 .../listing-19-08/src/main.rs                 |   9 +
 .../listing-19-09/Cargo.lock                  |   4 +
 .../listing-19-09/Cargo.toml                  |   7 +
 .../listing-19-09/src/main.rs                 |   5 +
 .../listing-19-10/Cargo.lock                  |   4 +
 .../listing-19-10/Cargo.toml                  |   7 +
 .../listing-19-10/src/main.rs                 |  15 +
 .../listing-19-11/Cargo.lock                  |   4 +
 .../listing-19-11/Cargo.toml                  |   7 +
 .../listing-19-11/src/main.rs                 |   9 +
 .../listing-19-12/Cargo.lock                  |   4 +
 .../listing-19-12/Cargo.toml                  |   7 +
 .../listing-19-12/src/lib.rs                  |   5 +
 .../listing-19-13/Cargo.lock                  |   4 +
 .../listing-19-13/Cargo.toml                  |   7 +
 .../listing-19-13/src/lib.rs                  |   3 +
 .../listing-19-14/Cargo.lock                  |   4 +
 .../listing-19-14/Cargo.toml                  |   7 +
 .../listing-19-14/src/main.rs                 |  23 +
 .../listing-19-15/Cargo.lock                  |   4 +
 .../listing-19-15/Cargo.toml                  |   7 +
 .../listing-19-15/src/lib.rs                  |  12 +
 .../listing-19-16/Cargo.lock                  |   4 +
 .../listing-19-16/Cargo.toml                  |   7 +
 .../listing-19-16/src/main.rs                 |  31 ++
 .../listing-19-17/Cargo.lock                  |   4 +
 .../listing-19-17/Cargo.toml                  |   7 +
 .../listing-19-17/src/main.rs                 |  34 ++
 .../listing-19-18/Cargo.lock                  |   4 +
 .../listing-19-18/Cargo.toml                  |   7 +
 .../listing-19-18/output.txt                  |   7 +
 .../listing-19-18/src/main.rs                 |  36 ++
 .../listing-19-19/Cargo.lock                  |   4 +
 .../listing-19-19/Cargo.toml                  |   7 +
 .../listing-19-19/output.txt                  |   5 +
 .../listing-19-19/src/main.rs                 |  21 +
 .../listing-19-20/Cargo.lock                  |   4 +
 .../listing-19-20/Cargo.toml                  |   7 +
 .../listing-19-20/output.txt                  |  20 +
 .../listing-19-20/src/main.rs                 |  23 +
 .../listing-19-21/Cargo.lock                  |   4 +
 .../listing-19-21/Cargo.toml                  |   7 +
 .../listing-19-21/output.txt                  |   5 +
 .../listing-19-21/src/main.rs                 |  23 +
 .../listing-19-22/Cargo.lock                  |   4 +
 .../listing-19-22/Cargo.toml                  |   7 +
 .../listing-19-22/src/main.rs                 |  17 +
 .../listing-19-23/Cargo.lock                  |   4 +
 .../listing-19-23/Cargo.toml                  |   7 +
 .../listing-19-23/src/main.rs                 |  14 +
 .../listing-19-24/Cargo.lock                  |   4 +
 .../listing-19-24/Cargo.toml                  |   7 +
 .../listing-19-24/src/main.rs                 |  16 +
 .../listing-19-25/Cargo.lock                  |   4 +
 .../listing-19-25/Cargo.toml                  |   7 +
 .../listing-19-25/src/main.rs                 |  18 +
 .../listing-19-27/Cargo.lock                  |   4 +
 .../listing-19-27/Cargo.toml                  |   7 +
 .../listing-19-27/src/main.rs                 |  13 +
 .../listing-19-28/Cargo.lock                  |   4 +
 .../listing-19-28/Cargo.toml                  |   7 +
 .../listing-19-28/src/lib.rs                  |  12 +
 .../listing-19-30/Cargo.lock                  |   4 +
 .../listing-19-30/Cargo.toml                  |   7 +
 .../listing-19-30/src/main.rs                 |   9 +
 .../listing-19-31/hello_macro/Cargo.lock      |   4 +
 .../listing-19-31/hello_macro/Cargo.toml      |   7 +
 .../hello_macro/hello_macro_derive/Cargo.lock |  44 ++
 .../hello_macro/hello_macro_derive/Cargo.toml |  12 +
 .../hello_macro/hello_macro_derive/src/lib.rs |  15 +
 .../listing-19-31/hello_macro/src/lib.rs      |   3 +
 .../listing-19-31/hello_macro/src/main.rs     |  13 +
 .../listing-19-33/hello_macro/Cargo.lock      |   4 +
 .../listing-19-33/hello_macro/Cargo.toml      |   7 +
 .../hello_macro/hello_macro_derive/Cargo.lock |  44 ++
 .../hello_macro/hello_macro_derive/Cargo.toml |  12 +
 .../hello_macro/hello_macro_derive/src/lib.rs |  29 +
 .../listing-19-33/hello_macro/src/lib.rs      |   3 +
 .../listing-19-33/hello_macro/src/main.rs     |  13 +
 .../no-listing-01-unsafe-fn/Cargo.lock        |   4 +
 .../no-listing-01-unsafe-fn/Cargo.toml        |   7 +
 .../no-listing-01-unsafe-fn/src/main.rs       |   9 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../output.txt                                |  17 +
 .../src/main.rs                               |  27 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |  33 ++
 .../no-listing-04-kilometers-alias/Cargo.lock |   4 +
 .../no-listing-04-kilometers-alias/Cargo.toml |   7 +
 .../src/main.rs                               |  12 +
 .../no-listing-05-write-trait/Cargo.lock      |   4 +
 .../no-listing-05-write-trait/Cargo.toml      |   7 +
 .../no-listing-05-write-trait/src/lib.rs      |  10 +
 .../no-listing-06-result-alias/Cargo.lock     |   4 +
 .../no-listing-06-result-alias/Cargo.toml     |   7 +
 .../no-listing-06-result-alias/src/lib.rs     |  17 +
 .../no-listing-07-never-type/Cargo.lock       |   4 +
 .../no-listing-07-never-type/Cargo.toml       |   7 +
 .../no-listing-07-never-type/src/lib.rs       |  10 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   9 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/lib.rs                                |  17 +
 .../Cargo.lock                                |   4 +
 .../Cargo.toml                                |   7 +
 .../src/main.rs                               |   9 +
 .../no-listing-11-cant-create-str/Cargo.lock  |   4 +
 .../no-listing-11-cant-create-str/Cargo.toml  |   7 +
 .../no-listing-11-cant-create-str/src/main.rs |   6 +
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 1950 files changed, 24678 insertions(+), 7665 deletions(-)
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diff --git a/ci/dictionary.txt b/ci/dictionary.txt
index 98f4b89e..2ac71a67 100644
--- a/ci/dictionary.txt
+++ b/ci/dictionary.txt
@@ -6,6 +6,7 @@ adaptor
 adaptors
 AddAssign
 Addr
+afdc
 aggregator
 AGraph
 aliasability
@@ -247,6 +248,7 @@ libpanic
 librarys
 libreoffice
 libstd
+libunwind
 lifecycle
 LimitTracker
 linter
@@ -334,6 +336,7 @@ parameterize
 ParseIntError
 PartialEq
 PartialOrd
+pbcopy
 PendingReview
 PendingReviewPost
 PlaceholderType
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-01/Cargo.lock b/listings/ch02-guessing-game-tutorial/listing-02-01/Cargo.lock
new file mode 100644
index 00000000..5802b7dc
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-01/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-01/Cargo.toml b/listings/ch02-guessing-game-tutorial/listing-02-01/Cargo.toml
new file mode 100644
index 00000000..e3091e7d
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-01/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-01/src/main.rs b/listings/ch02-guessing-game-tutorial/listing-02-01/src/main.rs
new file mode 100644
index 00000000..805241a5
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-01/src/main.rs
@@ -0,0 +1,14 @@
+use std::io;
+
+fn main() {
+    println!("Guess the number!");
+
+    println!("Please input your guess.");
+
+    let mut guess = String::new();
+
+    io::stdin().read_line(&mut guess)
+        .expect("Failed to read line");
+
+    println!("You guessed: {}", guess);
+}
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.lock b/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.lock
new file mode 100644
index 00000000..2752c9fb
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.lock
@@ -0,0 +1,87 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "bitflags"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "cloudabi"
+version = "0.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "fuchsia-cprng"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+dependencies = [
+ "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.62"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "rand"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "winapi"
+version = "0.3.8"
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diff --git a/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.toml b/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.toml
new file mode 100644
index 00000000..10932024
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-02/src/main.rs b/listings/ch02-guessing-game-tutorial/listing-02-02/src/main.rs
new file mode 100644
index 00000000..805241a5
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-02/src/main.rs
@@ -0,0 +1,14 @@
+use std::io;
+
+fn main() {
+    println!("Guess the number!");
+
+    println!("Please input your guess.");
+
+    let mut guess = String::new();
+
+    io::stdin().read_line(&mut guess)
+        .expect("Failed to read line");
+
+    println!("You guessed: {}", guess);
+}
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index 00000000..2b3d41ad
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diff --git a/listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.toml b/listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.toml
new file mode 100644
index 00000000..10932024
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-03/src/main.rs b/listings/ch02-guessing-game-tutorial/listing-02-03/src/main.rs
new file mode 100644
index 00000000..b73f3678
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-03/src/main.rs
@@ -0,0 +1,27 @@
+// ANCHOR: all
+use std::io;
+// ANCHOR: ch07-04
+use rand::Rng;
+
+fn main() {
+    // ANCHOR_END: ch07-04
+    println!("Guess the number!");
+
+    // ANCHOR: ch07-04
+    let secret_number = rand::thread_rng().gen_range(1, 101);
+    // ANCHOR_END: ch07-04
+
+    println!("The secret number is: {}", secret_number);
+
+    println!("Please input your guess.");
+
+    let mut guess = String::new();
+
+    io::stdin().read_line(&mut guess)
+        .expect("Failed to read line");
+
+    println!("You guessed: {}", guess);
+    // ANCHOR: ch07-04
+}
+// ANCHOR_END: ch07-04
+// ANCHOR_END: all
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new file mode 100644
index 00000000..2b3d41ad
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.lock
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diff --git a/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.toml b/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.toml
new file mode 100644
index 00000000..10932024
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-04/output.txt b/listings/ch02-guessing-game-tutorial/listing-02-04/output.txt
new file mode 100644
index 00000000..940d3727
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-04/output.txt
@@ -0,0 +1,21 @@
+$ cargo build
+   Compiling libc v0.2.51
+   Compiling rand_core v0.4.0
+   Compiling rand_core v0.3.1
+   Compiling rand v0.5.6
+   Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
+error[E0308]: mismatched types
+  --> src/main.rs:22:21
+   |
+22 |     match guess.cmp(&secret_number) {
+   |                     ^^^^^^^^^^^^^^ expected struct `std::string::String`, found integer
+   |
+   = note: expected type `&std::string::String`
+              found type `&{integer}`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
+error: Could not compile `guessing_game`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-04/src/main.rs b/listings/ch02-guessing-game-tutorial/listing-02-04/src/main.rs
new file mode 100644
index 00000000..bee037d4
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-04/src/main.rs
@@ -0,0 +1,32 @@
+// ANCHOR: here
+use std::io;
+use std::cmp::Ordering;
+use rand::Rng;
+
+fn main() {
+
+    // --snip--
+    // ANCHOR_END: here
+    println!("Guess the number!");
+
+    let secret_number = rand::thread_rng().gen_range(1, 101);
+
+    println!("The secret number is: {}", secret_number);
+
+    println!("Please input your guess.");
+
+    let mut guess = String::new();
+
+    io::stdin().read_line(&mut guess)
+        .expect("Failed to read line");
+    // ANCHOR: here
+
+    println!("You guessed: {}", guess);
+
+    match guess.cmp(&secret_number) {
+        Ordering::Less => println!("Too small!"),
+        Ordering::Greater => println!("Too big!"),
+        Ordering::Equal => println!("You win!"),
+    }
+}
+// ANCHOR_END: here
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diff --git a/listings/ch02-guessing-game-tutorial/listing-02-05/Cargo.toml b/listings/ch02-guessing-game-tutorial/listing-02-05/Cargo.toml
new file mode 100644
index 00000000..10932024
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-05/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs b/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs
new file mode 100644
index 00000000..84bf59c9
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs
@@ -0,0 +1,44 @@
+use std::io;
+use std::cmp::Ordering;
+use rand::Rng;
+
+fn main() {
+    println!("Guess the number!");
+
+    let secret_number = rand::thread_rng().gen_range(1, 101);
+
+    println!("The secret number is: {}", secret_number);
+
+    loop {
+        println!("Please input your guess.");
+
+        let mut guess = String::new();
+
+        // ANCHOR: here
+        // --snip--
+
+        io::stdin().read_line(&mut guess)
+            .expect("Failed to read line");
+
+        // ANCHOR: ch19
+        let guess: u32 = match guess.trim().parse() {
+            Ok(num) => num,
+            Err(_) => continue,
+        };
+        // ANCHOR_END: ch19
+
+        println!("You guessed: {}", guess);
+
+        // --snip--
+        // ANCHOR_END: here
+
+        match guess.cmp(&secret_number) {
+            Ordering::Less => println!("Too small!"),
+            Ordering::Greater => println!("Too big!"),
+            Ordering::Equal => {
+                println!("You win!");
+                break;
+            }
+        }
+    }
+}
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index 00000000..890a6580
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.lock
@@ -0,0 +1,87 @@
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+# It is not intended for manual editing.
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diff --git a/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.toml b/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.toml
new file mode 100644
index 00000000..10932024
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-06/src/main.rs b/listings/ch02-guessing-game-tutorial/listing-02-06/src/main.rs
new file mode 100644
index 00000000..2d4254ea
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/listing-02-06/src/main.rs
@@ -0,0 +1,34 @@
+use std::io;
+use std::cmp::Ordering;
+use rand::Rng;
+
+fn main() {
+    println!("Guess the number!");
+
+    let secret_number = rand::thread_rng().gen_range(1, 101);
+
+    loop {
+        println!("Please input your guess.");
+
+        let mut guess = String::new();
+
+        io::stdin().read_line(&mut guess)
+            .expect("Failed to read line");
+
+        let guess: u32 = match guess.trim().parse() {
+            Ok(num) => num,
+            Err(_) => continue,
+        };
+
+        println!("You guessed: {}", guess);
+
+        match guess.cmp(&secret_number) {
+            Ordering::Less => println!("Too small!"),
+            Ordering::Greater => println!("Too big!"),
+            Ordering::Equal => {
+                println!("You win!");
+                break;
+            }
+        }
+    }
+}
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/Cargo.lock b/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/Cargo.lock
new file mode 100644
index 00000000..5802b7dc
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/Cargo.toml b/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/Cargo.toml
new file mode 100644
index 00000000..e3091e7d
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/output.txt b/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/output.txt
new file mode 100644
index 00000000..2724c145
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
+    Finished dev [unoptimized + debuginfo] target(s) in 1.50s
+     Running `target/debug/guessing_game`
+Hello, world!
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/src/main.rs b/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/src/main.rs
new file mode 100644
index 00000000..e7a11a96
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/Cargo.lock b/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/Cargo.lock
new file mode 100644
index 00000000..5802b7dc
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/Cargo.toml b/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/Cargo.toml
new file mode 100644
index 00000000..e3091e7d
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/output.txt b/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/output.txt
new file mode 100644
index 00000000..928bff97
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/output.txt
@@ -0,0 +1,12 @@
+$ cargo build
+   Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
+warning: unused `std::result::Result` that must be used
+  --> src/main.rs:10:5
+   |
+10 |     io::stdin().read_line(&mut guess);
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: #[warn(unused_must_use)] on by default
+   = note: this `Result` may be an `Err` variant, which should be handled
+
+    Finished dev [unoptimized + debuginfo] target(s) in 0.59s
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/src/main.rs b/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/src/main.rs
new file mode 100644
index 00000000..aaf90bd6
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/src/main.rs
@@ -0,0 +1,13 @@
+use std::io;
+
+fn main() {
+    println!("Guess the number!");
+
+    println!("Please input your guess.");
+
+    let mut guess = String::new();
+
+    io::stdin().read_line(&mut guess);
+
+    println!("You guessed: {}", guess);
+}
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.lock b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.lock
new file mode 100644
index 00000000..2b3d41ad
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.lock
@@ -0,0 +1,87 @@
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+# It is not intended for manual editing.
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diff --git a/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.toml b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.toml
new file mode 100644
index 00000000..10932024
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/src/main.rs b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/src/main.rs
new file mode 100644
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--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/src/main.rs
@@ -0,0 +1,33 @@
+use std::io;
+use std::cmp::Ordering;
+use rand::Rng;
+
+fn main() {
+    println!("Guess the number!");
+
+    let secret_number = rand::thread_rng().gen_range(1, 101);
+
+    println!("The secret number is: {}", secret_number);
+
+    println!("Please input your guess.");
+
+    // ANCHOR: here
+    // --snip--
+
+    let mut guess = String::new();
+
+    io::stdin().read_line(&mut guess)
+        .expect("Failed to read line");
+
+    let guess: u32 = guess.trim().parse()
+        .expect("Please type a number!");
+
+    println!("You guessed: {}", guess);
+
+    match guess.cmp(&secret_number) {
+        Ordering::Less => println!("Too small!"),
+        Ordering::Greater => println!("Too big!"),
+        Ordering::Equal => println!("You win!"),
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.lock b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.lock
new file mode 100644
index 00000000..2b3d41ad
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.lock
@@ -0,0 +1,87 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
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+version = "1.2.0"
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+
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+]
+
+[[package]]
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+version = "0.1.1"
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+
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
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+ "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
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+ "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
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+version = "0.4.0"
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+[[package]]
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+
+[metadata]
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diff --git a/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.toml b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.toml
new file mode 100644
index 00000000..10932024
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-04-looping/src/main.rs b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/src/main.rs
new file mode 100644
index 00000000..2efd6243
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/src/main.rs
@@ -0,0 +1,40 @@
+use std::io;
+use std::cmp::Ordering;
+use rand::Rng;
+
+fn main() {
+    println!("Guess the number!");
+
+    let secret_number = rand::thread_rng().gen_range(1, 101);
+
+    // ANCHOR: here
+    // --snip--
+
+    println!("The secret number is: {}", secret_number);
+
+    loop {
+        println!("Please input your guess.");
+
+        // --snip--
+
+        // ANCHOR_END: here
+
+        let mut guess = String::new();
+
+        io::stdin().read_line(&mut guess)
+            .expect("Failed to read line");
+
+        let guess: u32 = guess.trim().parse()
+            .expect("Please type a number!");
+
+        println!("You guessed: {}", guess);
+
+        // ANCHOR: here
+        match guess.cmp(&secret_number) {
+            Ordering::Less => println!("Too small!"),
+            Ordering::Greater => println!("Too big!"),
+            Ordering::Equal => println!("You win!"),
+        }
+    }
+}
+// ANCHOR_END: here
\ No newline at end of file
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.lock b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.lock
new file mode 100644
index 00000000..2b3d41ad
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.lock
@@ -0,0 +1,87 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "bitflags"
+version = "1.2.0"
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+
+[[package]]
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+ "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "fuchsia-cprng"
+version = "0.1.1"
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+
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+dependencies = [
+ "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
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+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
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+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
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diff --git a/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.toml b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.toml
new file mode 100644
index 00000000..10932024
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/src/main.rs b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/src/main.rs
new file mode 100644
index 00000000..c6975ea0
--- /dev/null
+++ b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/src/main.rs
@@ -0,0 +1,38 @@
+use std::io;
+use std::cmp::Ordering;
+use rand::Rng;
+
+fn main() {
+    println!("Guess the number!");
+
+    let secret_number = rand::thread_rng().gen_range(1, 101);
+
+    println!("The secret number is: {}", secret_number);
+
+    loop {
+        println!("Please input your guess.");
+
+        let mut guess = String::new();
+
+        io::stdin().read_line(&mut guess)
+            .expect("Failed to read line");
+
+        let guess: u32 = guess.trim().parse()
+            .expect("Please type a number!");
+
+        println!("You guessed: {}", guess);
+
+        // ANCHOR: here
+        // --snip--
+
+        match guess.cmp(&secret_number) {
+            Ordering::Less => println!("Too small!"),
+            Ordering::Greater => println!("Too big!"),
+            Ordering::Equal => {
+                println!("You win!");
+                break;
+            }
+        }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch03-common-programming-concepts/listing-03-01/Cargo.lock b/listings/ch03-common-programming-concepts/listing-03-01/Cargo.lock
new file mode 100644
index 00000000..89a654d6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/listing-03-01/Cargo.toml b/listings/ch03-common-programming-concepts/listing-03-01/Cargo.toml
new file mode 100644
index 00000000..291680cf
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/listing-03-01/src/main.rs b/listings/ch03-common-programming-concepts/listing-03-01/src/main.rs
new file mode 100644
index 00000000..b492d384
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-01/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let y = 6;
+}
diff --git a/listings/ch03-common-programming-concepts/listing-03-02/Cargo.lock b/listings/ch03-common-programming-concepts/listing-03-02/Cargo.lock
new file mode 100644
index 00000000..a9b4d7e6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "branches"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/listing-03-02/Cargo.toml b/listings/ch03-common-programming-concepts/listing-03-02/Cargo.toml
new file mode 100644
index 00000000..8ddf6914
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "branches"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/listing-03-02/output.txt b/listings/ch03-common-programming-concepts/listing-03-02/output.txt
new file mode 100644
index 00000000..3eb8d102
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-02/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling branches v0.1.0 (file:///projects/branches)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.30s
+     Running `target/debug/branches`
+The value of number is: 5
diff --git a/listings/ch03-common-programming-concepts/listing-03-02/src/main.rs b/listings/ch03-common-programming-concepts/listing-03-02/src/main.rs
new file mode 100644
index 00000000..11ebad4e
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-02/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    let condition = true;
+    let number = if condition {
+        5
+    } else {
+        6
+    };
+
+    println!("The value of number is: {}", number);
+}
diff --git a/listings/ch03-common-programming-concepts/listing-03-03/Cargo.lock b/listings/ch03-common-programming-concepts/listing-03-03/Cargo.lock
new file mode 100644
index 00000000..3ca5bbae
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "loops"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/listing-03-03/Cargo.toml b/listings/ch03-common-programming-concepts/listing-03-03/Cargo.toml
new file mode 100644
index 00000000..b5ed848a
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "loops"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/listing-03-03/src/main.rs b/listings/ch03-common-programming-concepts/listing-03-03/src/main.rs
new file mode 100644
index 00000000..651ed68c
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-03/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    let mut number = 3;
+
+    while number != 0 {
+        println!("{}!", number);
+
+        number -= 1;
+    }
+
+    println!("LIFTOFF!!!");
+}
diff --git a/listings/ch03-common-programming-concepts/listing-03-04/Cargo.lock b/listings/ch03-common-programming-concepts/listing-03-04/Cargo.lock
new file mode 100644
index 00000000..3ca5bbae
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "loops"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/listing-03-04/Cargo.toml b/listings/ch03-common-programming-concepts/listing-03-04/Cargo.toml
new file mode 100644
index 00000000..b5ed848a
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "loops"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/listing-03-04/output.txt b/listings/ch03-common-programming-concepts/listing-03-04/output.txt
new file mode 100644
index 00000000..35c0f804
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-04/output.txt
@@ -0,0 +1,9 @@
+$ cargo run
+   Compiling loops v0.1.0 (file:///projects/loops)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.32s
+     Running `target/debug/loops`
+the value is: 10
+the value is: 20
+the value is: 30
+the value is: 40
+the value is: 50
diff --git a/listings/ch03-common-programming-concepts/listing-03-04/src/main.rs b/listings/ch03-common-programming-concepts/listing-03-04/src/main.rs
new file mode 100644
index 00000000..38fd301e
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-04/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    let a = [10, 20, 30, 40, 50];
+    let mut index = 0;
+
+    while index < 5 {
+        println!("the value is: {}", a[index]);
+
+        index += 1;
+    }
+}
diff --git a/listings/ch03-common-programming-concepts/listing-03-05/Cargo.lock b/listings/ch03-common-programming-concepts/listing-03-05/Cargo.lock
new file mode 100644
index 00000000..3ca5bbae
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "loops"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/listing-03-05/Cargo.toml b/listings/ch03-common-programming-concepts/listing-03-05/Cargo.toml
new file mode 100644
index 00000000..b5ed848a
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "loops"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/listing-03-05/src/main.rs b/listings/ch03-common-programming-concepts/listing-03-05/src/main.rs
new file mode 100644
index 00000000..6e3cca66
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/listing-03-05/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    let a = [10, 20, 30, 40, 50];
+
+    for element in a.iter() {
+        println!("the value is: {}", element);
+    }
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/Cargo.lock
new file mode 100644
index 00000000..2d62cbe7
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "variables"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/Cargo.toml
new file mode 100644
index 00000000..7915d397
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "variables"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/output.txt b/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/output.txt
new file mode 100644
index 00000000..f40d3632
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/output.txt
@@ -0,0 +1,20 @@
+$ cargo run
+   Compiling variables v0.1.0 (file:///projects/variables)
+error[E0384]: cannot assign twice to immutable variable `x`
+ --> src/main.rs:4:5
+  |
+2 |     let x = 5;
+  |         -
+  |         |
+  |         first assignment to `x`
+  |         help: make this binding mutable: `mut x`
+3 |     println!("The value of x is: {}", x);
+4 |     x = 6;
+  |     ^^^^^ cannot assign twice to immutable variable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0384`.
+error: Could not compile `variables`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/src/main.rs
new file mode 100644
index 00000000..a6c7ac07
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let x = 5;
+    println!("The value of x is: {}", x);
+    x = 6;
+    println!("The value of x is: {}", x);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/Cargo.lock
new file mode 100644
index 00000000..2d62cbe7
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "variables"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/Cargo.toml
new file mode 100644
index 00000000..7915d397
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "variables"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/output.txt b/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/output.txt
new file mode 100644
index 00000000..8ed6598f
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/output.txt
@@ -0,0 +1,6 @@
+$ cargo run
+   Compiling variables v0.1.0 (file:///projects/variables)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.30s
+     Running `target/debug/variables`
+The value of x is: 5
+The value of x is: 6
diff --git a/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/src/main.rs
new file mode 100644
index 00000000..c4e4a195
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-02-adding-mut/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let mut x = 5;
+    println!("The value of x is: {}", x);
+    x = 6;
+    println!("The value of x is: {}", x);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-03-shadowing/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-03-shadowing/Cargo.lock
new file mode 100644
index 00000000..2d62cbe7
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-03-shadowing/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "variables"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-03-shadowing/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-03-shadowing/Cargo.toml
new file mode 100644
index 00000000..7915d397
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-03-shadowing/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "variables"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-03-shadowing/output.txt b/listings/ch03-common-programming-concepts/no-listing-03-shadowing/output.txt
new file mode 100644
index 00000000..64ac2bf5
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-03-shadowing/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling variables v0.1.0 (file:///projects/variables)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.31s
+     Running `target/debug/variables`
+The value of x is: 12
diff --git a/listings/ch03-common-programming-concepts/no-listing-03-shadowing/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-03-shadowing/src/main.rs
new file mode 100644
index 00000000..d3251801
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-03-shadowing/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let x = 5;
+
+    let x = x + 1;
+
+    let x = x * 2;
+
+    println!("The value of x is: {}", x);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-04-shadowing-can-change-types/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-04-shadowing-can-change-types/Cargo.lock
new file mode 100644
index 00000000..6d77f6bc
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-04-shadowing-can-change-types/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "variables"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-04-shadowing-can-change-types/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-04-shadowing-can-change-types/Cargo.toml
new file mode 100644
index 00000000..7915d397
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-04-shadowing-can-change-types/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "variables"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-04-shadowing-can-change-types/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-04-shadowing-can-change-types/src/main.rs
new file mode 100644
index 00000000..42589f54
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-04-shadowing-can-change-types/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    // ANCHOR: here
+    let spaces = "   ";
+    let spaces = spaces.len();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/Cargo.lock
new file mode 100644
index 00000000..6d77f6bc
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "variables"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/Cargo.toml
new file mode 100644
index 00000000..7915d397
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "variables"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/output.txt b/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/output.txt
new file mode 100644
index 00000000..34bec245
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/output.txt
@@ -0,0 +1,17 @@
+$ cargo run
+   Compiling variables v0.1.0 (file:///projects/variables)
+error[E0308]: mismatched types
+ --> src/main.rs:3:14
+  |
+3 |     spaces = spaces.len();
+  |              ^^^^^^^^^^^^ expected &str, found usize
+  |
+  = note: expected type `&str`
+             found type `usize`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
+error: Could not compile `variables`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/src/main.rs
new file mode 100644
index 00000000..f52635d0
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    // ANCHOR: here
+    let mut spaces = "   ";
+    spaces = spaces.len();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-06-floating-point/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-06-floating-point/Cargo.lock
new file mode 100644
index 00000000..c51ba572
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-06-floating-point/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "floating-point"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-06-floating-point/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-06-floating-point/Cargo.toml
new file mode 100644
index 00000000..81e80c29
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-06-floating-point/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "floating-point"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-06-floating-point/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-06-floating-point/src/main.rs
new file mode 100644
index 00000000..6f4f0fe8
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-06-floating-point/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    let x = 2.0; // f64
+
+    let y: f32 = 3.0; // f32
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-07-numeric-operations/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-07-numeric-operations/Cargo.lock
new file mode 100644
index 00000000..4f0ede62
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-07-numeric-operations/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "numeric-operations"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-07-numeric-operations/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-07-numeric-operations/Cargo.toml
new file mode 100644
index 00000000..00601dde
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-07-numeric-operations/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "numeric-operations"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-07-numeric-operations/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-07-numeric-operations/src/main.rs
new file mode 100644
index 00000000..0a784bbc
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-07-numeric-operations/src/main.rs
@@ -0,0 +1,16 @@
+fn main() {
+    // addition
+    let sum = 5 + 10;
+
+    // subtraction
+    let difference = 95.5 - 4.3;
+
+    // multiplication
+    let product = 4 * 30;
+
+    // division
+    let quotient = 56.7 / 32.2;
+
+    // remainder
+    let remainder = 43 % 5;
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-08-boolean/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-08-boolean/Cargo.lock
new file mode 100644
index 00000000..bbe61d93
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-08-boolean/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "boolean"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-08-boolean/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-08-boolean/Cargo.toml
new file mode 100644
index 00000000..783df3dd
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-08-boolean/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "boolean"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-08-boolean/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-08-boolean/src/main.rs
new file mode 100644
index 00000000..2c56e62f
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-08-boolean/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    let t = true;
+
+    let f: bool = false; // with explicit type annotation
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-09-char/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-09-char/Cargo.lock
new file mode 100644
index 00000000..d55f4e95
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-09-char/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "char"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-09-char/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-09-char/Cargo.toml
new file mode 100644
index 00000000..cfde83b8
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-09-char/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "char"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-09-char/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-09-char/src/main.rs
new file mode 100644
index 00000000..4b8d9d93
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-09-char/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    let c = 'z';
+    let z = 'ℤ';
+    let heart_eyed_cat = '😻';
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-10-tuples/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-10-tuples/Cargo.lock
new file mode 100644
index 00000000..12bebfec
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-10-tuples/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "tuples"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-10-tuples/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-10-tuples/Cargo.toml
new file mode 100644
index 00000000..8d6c2d57
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-10-tuples/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "tuples"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-10-tuples/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-10-tuples/src/main.rs
new file mode 100644
index 00000000..b7b51fb2
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-10-tuples/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let tup: (i32, f64, u8) = (500, 6.4, 1);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-11-destructuring-tuples/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-11-destructuring-tuples/Cargo.lock
new file mode 100644
index 00000000..12bebfec
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-11-destructuring-tuples/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "tuples"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-11-destructuring-tuples/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-11-destructuring-tuples/Cargo.toml
new file mode 100644
index 00000000..8d6c2d57
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-11-destructuring-tuples/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "tuples"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-11-destructuring-tuples/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-11-destructuring-tuples/src/main.rs
new file mode 100644
index 00000000..35dcb442
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-11-destructuring-tuples/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    let tup = (500, 6.4, 1);
+
+    let (x, y, z) = tup;
+
+    println!("The value of y is: {}", y);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-12-tuple-indexing/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-12-tuple-indexing/Cargo.lock
new file mode 100644
index 00000000..12bebfec
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-12-tuple-indexing/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "tuples"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-12-tuple-indexing/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-12-tuple-indexing/Cargo.toml
new file mode 100644
index 00000000..8d6c2d57
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-12-tuple-indexing/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "tuples"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-12-tuple-indexing/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-12-tuple-indexing/src/main.rs
new file mode 100644
index 00000000..1b1e646f
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-12-tuple-indexing/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let x: (i32, f64, u8) = (500, 6.4, 1);
+
+    let five_hundred = x.0;
+
+    let six_point_four = x.1;
+
+    let one = x.2;
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-13-arrays/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-13-arrays/Cargo.lock
new file mode 100644
index 00000000..5ba3a3ec
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-13-arrays/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "arrays"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-13-arrays/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-13-arrays/Cargo.toml
new file mode 100644
index 00000000..ec97b7d5
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-13-arrays/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "arrays"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-13-arrays/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-13-arrays/src/main.rs
new file mode 100644
index 00000000..d475901c
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-13-arrays/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let a = [1, 2, 3, 4, 5];
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-14-array-indexing/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-14-array-indexing/Cargo.lock
new file mode 100644
index 00000000..5ba3a3ec
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-14-array-indexing/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "arrays"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-14-array-indexing/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-14-array-indexing/Cargo.toml
new file mode 100644
index 00000000..ec97b7d5
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-14-array-indexing/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "arrays"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-14-array-indexing/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-14-array-indexing/src/main.rs
new file mode 100644
index 00000000..d33e3174
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-14-array-indexing/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let a = [1, 2, 3, 4, 5];
+
+    let first = a[0];
+    let second = a[1];
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/Cargo.lock
new file mode 100644
index 00000000..5ba3a3ec
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "arrays"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/Cargo.toml
new file mode 100644
index 00000000..ec97b7d5
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "arrays"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/output.txt b/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/output.txt
new file mode 100644
index 00000000..be3ef310
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/output.txt
@@ -0,0 +1,6 @@
+$ cargo run
+   Compiling arrays v0.1.0 (file:///projects/arrays)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.31s
+     Running `target/debug/arrays`
+thread 'main' panicked at 'index out of bounds: the len is 5 but the index is 10', src/main.rs:5:19
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
diff --git a/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/src/main.rs
new file mode 100644
index 00000000..5ce0ed4a
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    let a = [1, 2, 3, 4, 5];
+    let index = 10;
+
+    let element = a[index];
+
+    println!("The value of element is: {}", element);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-16-functions/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-16-functions/Cargo.lock
new file mode 100644
index 00000000..89a654d6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-16-functions/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-16-functions/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-16-functions/Cargo.toml
new file mode 100644
index 00000000..291680cf
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-16-functions/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-16-functions/output.txt b/listings/ch03-common-programming-concepts/no-listing-16-functions/output.txt
new file mode 100644
index 00000000..723fad32
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-16-functions/output.txt
@@ -0,0 +1,6 @@
+$ cargo run
+   Compiling functions v0.1.0 (file:///projects/functions)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.28s
+     Running `target/debug/functions`
+Hello, world!
+Another function.
diff --git a/listings/ch03-common-programming-concepts/no-listing-16-functions/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-16-functions/src/main.rs
new file mode 100644
index 00000000..38be8565
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-16-functions/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    println!("Hello, world!");
+
+    another_function();
+}
+
+fn another_function() {
+    println!("Another function.");
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/Cargo.lock
new file mode 100644
index 00000000..89a654d6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/Cargo.toml
new file mode 100644
index 00000000..291680cf
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/output.txt b/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/output.txt
new file mode 100644
index 00000000..546bbc04
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling functions v0.1.0 (file:///projects/functions)
+    Finished dev [unoptimized + debuginfo] target(s) in 1.21s
+     Running `target/debug/functions`
+The value of x is: 5
diff --git a/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/src/main.rs
new file mode 100644
index 00000000..029446c0
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    another_function(5);
+}
+
+fn another_function(x: i32) {
+    println!("The value of x is: {}", x);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/Cargo.lock
new file mode 100644
index 00000000..89a654d6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/Cargo.toml
new file mode 100644
index 00000000..291680cf
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/output.txt b/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/output.txt
new file mode 100644
index 00000000..d651191c
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/output.txt
@@ -0,0 +1,6 @@
+$ cargo run
+   Compiling functions v0.1.0 (file:///projects/functions)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.31s
+     Running `target/debug/functions`
+The value of x is: 5
+The value of y is: 6
diff --git a/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/src/main.rs
new file mode 100644
index 00000000..fe476db0
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    another_function(5, 6);
+}
+
+fn another_function(x: i32, y: i32) {
+    println!("The value of x is: {}", x);
+    println!("The value of y is: {}", y);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.lock
new file mode 100644
index 00000000..89a654d6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.toml
new file mode 100644
index 00000000..291680cf
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/src/main.rs
new file mode 100644
index 00000000..988f9653
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let x = (let y = 6);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-20-blocks-are-expressions/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-20-blocks-are-expressions/Cargo.lock
new file mode 100644
index 00000000..89a654d6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-20-blocks-are-expressions/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-20-blocks-are-expressions/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-20-blocks-are-expressions/Cargo.toml
new file mode 100644
index 00000000..291680cf
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-20-blocks-are-expressions/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-20-blocks-are-expressions/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-20-blocks-are-expressions/src/main.rs
new file mode 100644
index 00000000..baa853e1
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-20-blocks-are-expressions/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    let x = 5;
+
+    let y = {
+        let x = 3;
+        x + 1
+    };
+
+    println!("The value of y is: {}", y);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/Cargo.lock
new file mode 100644
index 00000000..89a654d6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/Cargo.toml
new file mode 100644
index 00000000..291680cf
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/output.txt b/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/output.txt
new file mode 100644
index 00000000..a457e339
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling functions v0.1.0 (file:///projects/functions)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.30s
+     Running `target/debug/functions`
+The value of x is: 5
diff --git a/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/src/main.rs
new file mode 100644
index 00000000..5303b108
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-21-function-return-values/src/main.rs
@@ -0,0 +1,9 @@
+fn five() -> i32 {
+    5
+}
+
+fn main() {
+    let x = five();
+
+    println!("The value of x is: {}", x);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-22-function-parameter-and-return/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-22-function-parameter-and-return/Cargo.lock
new file mode 100644
index 00000000..89a654d6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-22-function-parameter-and-return/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-22-function-parameter-and-return/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-22-function-parameter-and-return/Cargo.toml
new file mode 100644
index 00000000..291680cf
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-22-function-parameter-and-return/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-22-function-parameter-and-return/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-22-function-parameter-and-return/src/main.rs
new file mode 100644
index 00000000..b4c84437
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-22-function-parameter-and-return/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let x = plus_one(5);
+
+    println!("The value of x is: {}", x);
+}
+
+fn plus_one(x: i32) -> i32 {
+    x + 1
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/Cargo.lock
new file mode 100644
index 00000000..89a654d6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/Cargo.toml
new file mode 100644
index 00000000..291680cf
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/output.txt b/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/output.txt
new file mode 100644
index 00000000..6dbc57e5
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/output.txt
@@ -0,0 +1,21 @@
+$ cargo run
+   Compiling functions v0.1.0 (file:///projects/functions)
+error[E0308]: mismatched types
+ --> src/main.rs:7:24
+  |
+7 | fn plus_one(x: i32) -> i32 {
+  |    --------            ^^^ expected i32, found ()
+  |    |
+  |    this function's body doesn't return
+8 |     x + 1;
+  |          - help: consider removing this semicolon
+  |
+  = note: expected type `i32`
+             found type `()`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
+error: Could not compile `functions`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/src/main.rs
new file mode 100644
index 00000000..c9c4edc1
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let x = plus_one(5);
+
+    println!("The value of x is: {}", x);
+}
+
+fn plus_one(x: i32) -> i32 {
+    x + 1;
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-24-comments-end-of-line/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-24-comments-end-of-line/Cargo.lock
new file mode 100644
index 00000000..0c3b6780
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-24-comments-end-of-line/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "comments"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-24-comments-end-of-line/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-24-comments-end-of-line/Cargo.toml
new file mode 100644
index 00000000..c53d8757
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-24-comments-end-of-line/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "comments"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-24-comments-end-of-line/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-24-comments-end-of-line/src/main.rs
new file mode 100644
index 00000000..535f4b99
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-24-comments-end-of-line/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let lucky_number = 7; // I’m feeling lucky today
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-25-comments-above-line/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-25-comments-above-line/Cargo.lock
new file mode 100644
index 00000000..0c3b6780
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-25-comments-above-line/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "comments"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-25-comments-above-line/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-25-comments-above-line/Cargo.toml
new file mode 100644
index 00000000..c53d8757
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-25-comments-above-line/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "comments"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-25-comments-above-line/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-25-comments-above-line/src/main.rs
new file mode 100644
index 00000000..81cd9355
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-25-comments-above-line/src/main.rs
@@ -0,0 +1,4 @@
+fn main() {
+    // I’m feeling lucky today
+    let lucky_number = 7;
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-26-if-true/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-26-if-true/Cargo.lock
new file mode 100644
index 00000000..a9b4d7e6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-26-if-true/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "branches"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-26-if-true/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-26-if-true/Cargo.toml
new file mode 100644
index 00000000..8ddf6914
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-26-if-true/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "branches"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-26-if-true/output.txt b/listings/ch03-common-programming-concepts/no-listing-26-if-true/output.txt
new file mode 100644
index 00000000..3d8c7dc3
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-26-if-true/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling branches v0.1.0 (file:///projects/branches)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.31s
+     Running `target/debug/branches`
+condition was true
diff --git a/listings/ch03-common-programming-concepts/no-listing-26-if-true/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-26-if-true/src/main.rs
new file mode 100644
index 00000000..e64a42ad
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-26-if-true/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let number = 3;
+
+    if number < 5 {
+        println!("condition was true");
+    } else {
+        println!("condition was false");
+    }
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-27-if-false/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-27-if-false/Cargo.lock
new file mode 100644
index 00000000..a9b4d7e6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-27-if-false/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "branches"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-27-if-false/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-27-if-false/Cargo.toml
new file mode 100644
index 00000000..8ddf6914
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-27-if-false/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "branches"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-27-if-false/output.txt b/listings/ch03-common-programming-concepts/no-listing-27-if-false/output.txt
new file mode 100644
index 00000000..e40da961
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-27-if-false/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling branches v0.1.0 (file:///projects/branches)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.31s
+     Running `target/debug/branches`
+condition was false
diff --git a/listings/ch03-common-programming-concepts/no-listing-27-if-false/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-27-if-false/src/main.rs
new file mode 100644
index 00000000..f7d76cf5
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-27-if-false/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // ANCHOR: here
+    let number = 7;
+    // ANCHOR_END: here
+
+    if number < 5 {
+        println!("condition was true");
+    } else {
+        println!("condition was false");
+    }
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/Cargo.lock
new file mode 100644
index 00000000..a9b4d7e6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "branches"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/Cargo.toml
new file mode 100644
index 00000000..8ddf6914
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "branches"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/output.txt b/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/output.txt
new file mode 100644
index 00000000..79500f97
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/output.txt
@@ -0,0 +1,17 @@
+$ cargo run
+   Compiling branches v0.1.0 (file:///projects/branches)
+error[E0308]: mismatched types
+ --> src/main.rs:4:8
+  |
+4 |     if number {
+  |        ^^^^^^ expected bool, found integer
+  |
+  = note: expected type `bool`
+             found type `{integer}`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
+error: Could not compile `branches`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/src/main.rs
new file mode 100644
index 00000000..bc4af767
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    let number = 3;
+
+    if number {
+        println!("number was three");
+    }
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-29-if-not-equal-0/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-29-if-not-equal-0/Cargo.lock
new file mode 100644
index 00000000..a9b4d7e6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-29-if-not-equal-0/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "branches"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-29-if-not-equal-0/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-29-if-not-equal-0/Cargo.toml
new file mode 100644
index 00000000..8ddf6914
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-29-if-not-equal-0/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "branches"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-29-if-not-equal-0/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-29-if-not-equal-0/src/main.rs
new file mode 100644
index 00000000..704650f4
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-29-if-not-equal-0/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    let number = 3;
+
+    if number != 0 {
+        println!("number was something other than zero");
+    }
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-30-else-if/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-30-else-if/Cargo.lock
new file mode 100644
index 00000000..a9b4d7e6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-30-else-if/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "branches"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-30-else-if/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-30-else-if/Cargo.toml
new file mode 100644
index 00000000..8ddf6914
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-30-else-if/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "branches"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-30-else-if/output.txt b/listings/ch03-common-programming-concepts/no-listing-30-else-if/output.txt
new file mode 100644
index 00000000..b218941a
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-30-else-if/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling branches v0.1.0 (file:///projects/branches)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.31s
+     Running `target/debug/branches`
+number is divisible by 3
diff --git a/listings/ch03-common-programming-concepts/no-listing-30-else-if/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-30-else-if/src/main.rs
new file mode 100644
index 00000000..d0ef9b2c
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-30-else-if/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    let number = 6;
+
+    if number % 4 == 0 {
+        println!("number is divisible by 4");
+    } else if number % 3 == 0 {
+        println!("number is divisible by 3");
+    } else if number % 2 == 0 {
+        println!("number is divisible by 2");
+    } else {
+        println!("number is not divisible by 4, 3, or 2");
+    }
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/Cargo.lock
new file mode 100644
index 00000000..a9b4d7e6
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "branches"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/Cargo.toml
new file mode 100644
index 00000000..8ddf6914
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "branches"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/output.txt b/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/output.txt
new file mode 100644
index 00000000..591e73ab
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/output.txt
@@ -0,0 +1,24 @@
+$ cargo run
+   Compiling branches v0.1.0 (file:///projects/branches)
+error[E0308]: if and else have incompatible types
+ --> src/main.rs:7:9
+  |
+4 |       let number = if condition {
+  |  __________________-
+5 | |         5
+  | |         - expected because of this
+6 | |     } else {
+7 | |         "six"
+  | |         ^^^^^ expected integer, found &str
+8 | |     };
+  | |_____- if and else have incompatible types
+  |
+  = note: expected type `{integer}`
+             found type `&str`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
+error: Could not compile `branches`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/src/main.rs
new file mode 100644
index 00000000..ca1ac970
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    let condition = true;
+
+    let number = if condition {
+        5
+    } else {
+        "six"
+    };
+
+    println!("The value of number is: {}", number);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-32-loop/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-32-loop/Cargo.lock
new file mode 100644
index 00000000..9942b362
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-32-loop/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "loops"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-32-loop/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-32-loop/Cargo.toml
new file mode 100644
index 00000000..b5ed848a
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-32-loop/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "loops"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-32-loop/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-32-loop/src/main.rs
new file mode 100644
index 00000000..f1692e46
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-32-loop/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    loop {
+        println!("again!");
+    }
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-33-return-value-from-loop/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-33-return-value-from-loop/Cargo.lock
new file mode 100644
index 00000000..3ca5bbae
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-33-return-value-from-loop/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "loops"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-33-return-value-from-loop/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-33-return-value-from-loop/Cargo.toml
new file mode 100644
index 00000000..b5ed848a
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-33-return-value-from-loop/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "loops"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-33-return-value-from-loop/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-33-return-value-from-loop/src/main.rs
new file mode 100644
index 00000000..6ffdab5a
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-33-return-value-from-loop/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    let mut counter = 0;
+
+    let result = loop {
+        counter += 1;
+
+        if counter == 10 {
+            break counter * 2;
+        }
+    };
+
+    println!("The result is {}", result);
+}
diff --git a/listings/ch03-common-programming-concepts/no-listing-34-for-range/Cargo.lock b/listings/ch03-common-programming-concepts/no-listing-34-for-range/Cargo.lock
new file mode 100644
index 00000000..3ca5bbae
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-34-for-range/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "loops"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/no-listing-34-for-range/Cargo.toml b/listings/ch03-common-programming-concepts/no-listing-34-for-range/Cargo.toml
new file mode 100644
index 00000000..b5ed848a
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-34-for-range/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "loops"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/no-listing-34-for-range/src/main.rs b/listings/ch03-common-programming-concepts/no-listing-34-for-range/src/main.rs
new file mode 100644
index 00000000..e7286a84
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/no-listing-34-for-range/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    for number in (1..4).rev() {
+        println!("{}!", number);
+    }
+    println!("LIFTOFF!!!");
+}
diff --git a/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/Cargo.lock b/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/Cargo.lock
new file mode 100644
index 00000000..b5664bc3
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "no_type_annotations"
+version = "0.1.0"
+
diff --git a/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/Cargo.toml b/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/Cargo.toml
new file mode 100644
index 00000000..964f9e8e
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "no_type_annotations"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/output.txt b/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/output.txt
new file mode 100644
index 00000000..e0cba5ff
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/output.txt
@@ -0,0 +1,17 @@
+$ cargo build
+   Compiling no_type_annotations v0.1.0 (file:///projects/no_type_annotations)
+error[E0282]: type annotations needed
+ --> src/main.rs:2:9
+  |
+2 |     let guess = "42".parse().expect("Not a number!");
+  |         ^^^^^
+  |         |
+  |         cannot infer type
+  |         consider giving `guess` a type
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0282`.
+error: Could not compile `no_type_annotations`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/src/main.rs b/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/src/main.rs
new file mode 100644
index 00000000..f41c5580
--- /dev/null
+++ b/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let guess = "42".parse().expect("Not a number!");
+}
diff --git a/listings/ch04-understanding-ownership/listing-04-01/Cargo.lock b/listings/ch04-understanding-ownership/listing-04-01/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/listing-04-01/Cargo.toml b/listings/ch04-understanding-ownership/listing-04-01/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/listing-04-01/src/main.rs b/listings/ch04-understanding-ownership/listing-04-01/src/main.rs
new file mode 100644
index 00000000..148ad84c
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-01/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    {                      // s is not valid here, it’s not yet declared
+        let s = "hello";   // s is valid from this point forward
+
+        // do stuff with s
+    }                      // this scope is now over, and s is no longer valid
+    // ANCHOR_END: here
+}
\ No newline at end of file
diff --git a/listings/ch04-understanding-ownership/listing-04-02/Cargo.lock b/listings/ch04-understanding-ownership/listing-04-02/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/listing-04-02/Cargo.toml b/listings/ch04-understanding-ownership/listing-04-02/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/listing-04-02/src/main.rs b/listings/ch04-understanding-ownership/listing-04-02/src/main.rs
new file mode 100644
index 00000000..de0f1b32
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-02/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    // ANCHOR: here
+    let x = 5;
+    let y = x;
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/listing-04-03/Cargo.lock b/listings/ch04-understanding-ownership/listing-04-03/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/listing-04-03/Cargo.toml b/listings/ch04-understanding-ownership/listing-04-03/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/listing-04-03/src/main.rs b/listings/ch04-understanding-ownership/listing-04-03/src/main.rs
new file mode 100644
index 00000000..23906b43
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-03/src/main.rs
@@ -0,0 +1,23 @@
+fn main() {
+    let s = String::from("hello");  // s comes into scope
+
+    takes_ownership(s);             // s's value moves into the function...
+                                    // ... and so is no longer valid here
+
+    let x = 5;                      // x comes into scope
+
+    makes_copy(x);                  // x would move into the function,
+                                    // but i32 is Copy, so it’s okay to still
+                                    // use x afterward
+
+} // Here, x goes out of scope, then s. But because s's value was moved, nothing
+  // special happens.
+
+fn takes_ownership(some_string: String) { // some_string comes into scope
+    println!("{}", some_string);
+} // Here, some_string goes out of scope and `drop` is called. The backing
+  // memory is freed.
+
+fn makes_copy(some_integer: i32) { // some_integer comes into scope
+    println!("{}", some_integer);
+} // Here, some_integer goes out of scope. Nothing special happens.
diff --git a/listings/ch04-understanding-ownership/listing-04-04/Cargo.lock b/listings/ch04-understanding-ownership/listing-04-04/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/listing-04-04/Cargo.toml b/listings/ch04-understanding-ownership/listing-04-04/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/listing-04-04/src/main.rs b/listings/ch04-understanding-ownership/listing-04-04/src/main.rs
new file mode 100644
index 00000000..e3e54a81
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-04/src/main.rs
@@ -0,0 +1,29 @@
+fn main() {
+    let s1 = gives_ownership();         // gives_ownership moves its return
+                                        // value into s1
+
+    let s2 = String::from("hello");     // s2 comes into scope
+
+    let s3 = takes_and_gives_back(s2);  // s2 is moved into
+                                        // takes_and_gives_back, which also
+                                        // moves its return value into s3
+} // Here, s3 goes out of scope and is dropped. s2 goes out of scope but was
+  // moved, so nothing happens. s1 goes out of scope and is dropped.
+
+fn gives_ownership() -> String {             // gives_ownership will move its
+                                             // return value into the function
+                                             // that calls it
+
+    let some_string = String::from("hello"); // some_string comes into scope
+
+    some_string                              // some_string is returned and
+                                             // moves out to the calling
+                                             // function
+}
+
+// takes_and_gives_back will take a String and return one
+fn takes_and_gives_back(a_string: String) -> String { // a_string comes into
+                                                      // scope
+
+    a_string  // a_string is returned and moves out to the calling function
+}
diff --git a/listings/ch04-understanding-ownership/listing-04-05/Cargo.lock b/listings/ch04-understanding-ownership/listing-04-05/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/listing-04-05/Cargo.toml b/listings/ch04-understanding-ownership/listing-04-05/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/listing-04-05/src/main.rs b/listings/ch04-understanding-ownership/listing-04-05/src/main.rs
new file mode 100644
index 00000000..22aee141
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-05/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    let s1 = String::from("hello");
+
+    let (s2, len) = calculate_length(s1);
+
+    println!("The length of '{}' is {}.", s2, len);
+}
+
+fn calculate_length(s: String) -> (String, usize) {
+    let length = s.len(); // len() returns the length of a String
+
+    (s, length)
+}
diff --git a/listings/ch04-understanding-ownership/listing-04-06/Cargo.lock b/listings/ch04-understanding-ownership/listing-04-06/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/listing-04-06/Cargo.toml b/listings/ch04-understanding-ownership/listing-04-06/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/listing-04-06/output.txt b/listings/ch04-understanding-ownership/listing-04-06/output.txt
new file mode 100644
index 00000000..8ce93233
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-06/output.txt
@@ -0,0 +1,16 @@
+$ cargo run
+   Compiling ownership v0.1.0 (file:///projects/ownership)
+error[E0596]: cannot borrow `*some_string` as mutable, as it is behind a `&` reference
+ --> src/main.rs:8:5
+  |
+7 | fn change(some_string: &String) {
+  |                        ------- help: consider changing this to be a mutable reference: `&mut std::string::String`
+8 |     some_string.push_str(", world");
+  |     ^^^^^^^^^^^ `some_string` is a `&` reference, so the data it refers to cannot be borrowed as mutable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0596`.
+error: Could not compile `ownership`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch04-understanding-ownership/listing-04-06/src/main.rs b/listings/ch04-understanding-ownership/listing-04-06/src/main.rs
new file mode 100644
index 00000000..330ffa68
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-06/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let s = String::from("hello");
+
+    change(&s);
+}
+
+fn change(some_string: &String) {
+    some_string.push_str(", world");
+}
diff --git a/listings/ch04-understanding-ownership/listing-04-07/Cargo.lock b/listings/ch04-understanding-ownership/listing-04-07/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/listing-04-07/Cargo.toml b/listings/ch04-understanding-ownership/listing-04-07/Cargo.toml
new file mode 100644
index 00000000..dddcb5a1
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Carol (Nichols || Goulding) <carol.nichols@gmail.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/listing-04-07/src/main.rs b/listings/ch04-understanding-ownership/listing-04-07/src/main.rs
new file mode 100644
index 00000000..a5ed8890
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-07/src/main.rs
@@ -0,0 +1,22 @@
+// ANCHOR: here
+fn first_word(s: &String) -> usize {
+    // ANCHOR: as_bytes
+    let bytes = s.as_bytes();
+    // ANCHOR_END: as_bytes
+
+    // ANCHOR: iter
+    for (i, &item) in bytes.iter().enumerate() {
+        // ANCHOR_END: iter
+        // ANCHOR: inside_for
+        if item == b' ' {
+            return i;
+        }
+    }
+
+    s.len()
+    // ANCHOR_END: inside_for
+}
+// ANCHOR_END: here
+
+fn main() {
+}
diff --git a/listings/ch04-understanding-ownership/listing-04-08/Cargo.lock b/listings/ch04-understanding-ownership/listing-04-08/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/listing-04-08/Cargo.toml b/listings/ch04-understanding-ownership/listing-04-08/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/listing-04-08/src/main.rs b/listings/ch04-understanding-ownership/listing-04-08/src/main.rs
new file mode 100644
index 00000000..b6182fe2
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-08/src/main.rs
@@ -0,0 +1,24 @@
+fn first_word(s: &String) -> usize {
+    let bytes = s.as_bytes();
+
+    for (i, &item) in bytes.iter().enumerate() {
+        if item == b' ' {
+            return i;
+        }
+    }
+
+    s.len()
+}
+
+// ANCHOR: here
+fn main() {
+    let mut s = String::from("hello world");
+
+    let word = first_word(&s); // word will get the value 5
+
+    s.clear(); // this empties the String, making it equal to ""
+
+    // word still has the value 5 here, but there's no more string that
+    // we could meaningfully use the value 5 with. word is now totally invalid!
+}
+// ANCHOR_END: here
diff --git a/listings/ch04-understanding-ownership/listing-04-09/Cargo.lock b/listings/ch04-understanding-ownership/listing-04-09/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/listing-04-09/Cargo.toml b/listings/ch04-understanding-ownership/listing-04-09/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/listing-04-09/src/main.rs b/listings/ch04-understanding-ownership/listing-04-09/src/main.rs
new file mode 100644
index 00000000..19a9cc74
--- /dev/null
+++ b/listings/ch04-understanding-ownership/listing-04-09/src/main.rs
@@ -0,0 +1,31 @@
+// ANCHOR: here
+fn first_word(s: &str) -> &str {
+    // ANCHOR_END: here
+    let bytes = s.as_bytes();
+
+    for (i, &item) in bytes.iter().enumerate() {
+        if item == b' ' {
+            return &s[0..i];
+        }
+    }
+
+    &s[..]
+}
+
+// ANCHOR: usage
+fn main() {
+    let my_string = String::from("hello world");
+
+    // first_word works on slices of `String`s
+    let word = first_word(&my_string[..]);
+
+    let my_string_literal = "hello world";
+
+    // first_word works on slices of string literals
+    let word = first_word(&my_string_literal[..]);
+
+    // Because string literals *are* string slices already,
+    // this works too, without the slice syntax!
+    let word = first_word(my_string_literal);
+}
+// ANCHOR_END: usage
diff --git a/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/src/main.rs b/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/src/main.rs
new file mode 100644
index 00000000..86e1ffb4
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    let mut s = String::from("hello");
+
+    s.push_str(", world!"); // push_str() appends a literal to a String
+
+    println!("{}", s); // This will print `hello, world!`
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-02-string-scope/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-02-string-scope/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-02-string-scope/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-02-string-scope/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-02-string-scope/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-02-string-scope/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-02-string-scope/src/main.rs b/listings/ch04-understanding-ownership/no-listing-02-string-scope/src/main.rs
new file mode 100644
index 00000000..7e6d46f8
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-02-string-scope/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    // ANCHOR: here
+    {
+        let s = String::from("hello"); // s is valid from this point forward
+
+        // do stuff with s
+    }                                  // this scope is now over, and s is no
+                                       // longer valid
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-03-string-move/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-03-string-move/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-03-string-move/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-03-string-move/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-03-string-move/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-03-string-move/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-03-string-move/src/main.rs b/listings/ch04-understanding-ownership/no-listing-03-string-move/src/main.rs
new file mode 100644
index 00000000..a5817e71
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-03-string-move/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    // ANCHOR: here
+    let s1 = String::from("hello");
+    let s2 = s1;
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/Cargo.lock
new file mode 100644
index 00000000..2aa4918e
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/output.txt b/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/output.txt
new file mode 100644
index 00000000..fcffb809
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/output.txt
@@ -0,0 +1,19 @@
+$ cargo run
+   Compiling ownership v0.1.0 (file:///projects/ownership)
+error[E0382]: borrow of moved value: `s1`
+ --> src/main.rs:5:28
+  |
+2 |     let s1 = String::from("hello");
+  |         -- move occurs because `s1` has type `std::string::String`, which does not implement the `Copy` trait
+3 |     let s2 = s1;
+  |              -- value moved here
+4 | 
+5 |     println!("{}, world!", s1);
+  |                            ^^ value borrowed here after move
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0382`.
+error: Could not compile `ownership`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/src/main.rs b/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/src/main.rs
new file mode 100644
index 00000000..d0b9f187
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let s1 = String::from("hello");
+    let s2 = s1;
+
+    println!("{}, world!", s1);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-05-clone/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-05-clone/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-05-clone/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-05-clone/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-05-clone/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-05-clone/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-05-clone/src/main.rs b/listings/ch04-understanding-ownership/no-listing-05-clone/src/main.rs
new file mode 100644
index 00000000..4e61cc1a
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-05-clone/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let s1 = String::from("hello");
+    let s2 = s1.clone();
+
+    println!("s1 = {}, s2 = {}", s1, s2);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-06-copy/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-06-copy/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-06-copy/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-06-copy/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-06-copy/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-06-copy/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-06-copy/src/main.rs b/listings/ch04-understanding-ownership/no-listing-06-copy/src/main.rs
new file mode 100644
index 00000000..63a1fae2
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-06-copy/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let x = 5;
+    let y = x;
+
+    println!("x = {}, y = {}", x, y);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-07-reference/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-07-reference/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-07-reference/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-07-reference/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-07-reference/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-07-reference/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-07-reference/src/main.rs b/listings/ch04-understanding-ownership/no-listing-07-reference/src/main.rs
new file mode 100644
index 00000000..fd32a5fc
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-07-reference/src/main.rs
@@ -0,0 +1,15 @@
+// ANCHOR: all
+fn main() {
+    // ANCHOR: here
+    let s1 = String::from("hello");
+
+    let len = calculate_length(&s1);
+    // ANCHOR_END: here
+
+    println!("The length of '{}' is {}.", s1, len);
+}
+
+fn calculate_length(s: &String) -> usize {
+    s.len()
+}
+// ANCHOR_END: all
diff --git a/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/src/main.rs b/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/src/main.rs
new file mode 100644
index 00000000..6e40b8c3
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/src/main.rs
@@ -0,0 +1,14 @@
+fn main() {
+    let s1 = String::from("hello");
+
+    let len = calculate_length(&s1);
+
+    println!("The length of '{}' is {}.", s1, len);
+}
+
+// ANCHOR: here
+fn calculate_length(s: &String) -> usize { // s is a reference to a String
+    s.len()
+} // Here, s goes out of scope. But because it does not have ownership of what
+  // it refers to, nothing happens.
+// ANCHOR_END: here
diff --git a/listings/ch04-understanding-ownership/no-listing-09-fixes-listing-04-06/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-09-fixes-listing-04-06/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-09-fixes-listing-04-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-09-fixes-listing-04-06/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-09-fixes-listing-04-06/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-09-fixes-listing-04-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-09-fixes-listing-04-06/src/main.rs b/listings/ch04-understanding-ownership/no-listing-09-fixes-listing-04-06/src/main.rs
new file mode 100644
index 00000000..fdf7f0a6
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-09-fixes-listing-04-06/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let mut s = String::from("hello");
+
+    change(&mut s);
+}
+
+fn change(some_string: &mut String) {
+    some_string.push_str(", world");
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/output.txt b/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/output.txt
new file mode 100644
index 00000000..dd5eaac9
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/output.txt
@@ -0,0 +1,19 @@
+$ cargo run
+   Compiling ownership v0.1.0 (file:///projects/ownership)
+error[E0499]: cannot borrow `s` as mutable more than once at a time
+ --> src/main.rs:5:14
+  |
+4 |     let r1 = &mut s;
+  |              ------ first mutable borrow occurs here
+5 |     let r2 = &mut s;
+  |              ^^^^^^ second mutable borrow occurs here
+6 | 
+7 |     println!("{}, {}", r1, r2);
+  |                        -- first borrow later used here
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0499`.
+error: Could not compile `ownership`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/src/main.rs b/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/src/main.rs
new file mode 100644
index 00000000..ddbf8120
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    // ANCHOR: here
+    let mut s = String::from("hello");
+
+    let r1 = &mut s;
+    let r2 = &mut s;
+
+    println!("{}, {}", r1, r2);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-11-muts-in-separate-scopes/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-11-muts-in-separate-scopes/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-11-muts-in-separate-scopes/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-11-muts-in-separate-scopes/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-11-muts-in-separate-scopes/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-11-muts-in-separate-scopes/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-11-muts-in-separate-scopes/src/main.rs b/listings/ch04-understanding-ownership/no-listing-11-muts-in-separate-scopes/src/main.rs
new file mode 100644
index 00000000..36a4cbdd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-11-muts-in-separate-scopes/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    // ANCHOR: here
+    let mut s = String::from("hello");
+
+    {
+        let r1 = &mut s;
+
+    } // r1 goes out of scope here, so we can make a new reference with no problems.
+
+    let r2 = &mut s;
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/output.txt b/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/output.txt
new file mode 100644
index 00000000..a1978001
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/output.txt
@@ -0,0 +1,20 @@
+$ cargo run
+   Compiling ownership v0.1.0 (file:///projects/ownership)
+error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immutable
+ --> src/main.rs:6:14
+  |
+4 |     let r1 = &s; // no problem
+  |              -- immutable borrow occurs here
+5 |     let r2 = &s; // no problem
+6 |     let r3 = &mut s; // BIG PROBLEM
+  |              ^^^^^^ mutable borrow occurs here
+7 | 
+8 |     println!("{}, {}, and {}", r1, r2, r3);
+  |                                -- immutable borrow later used here
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0502`.
+error: Could not compile `ownership`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/src/main.rs b/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/src/main.rs
new file mode 100644
index 00000000..0da04c01
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // ANCHOR: here
+    let mut s = String::from("hello");
+
+    let r1 = &s; // no problem
+    let r2 = &s; // no problem
+    let r3 = &mut s; // BIG PROBLEM
+
+    println!("{}, {}, and {}", r1, r2, r3);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs b/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs
new file mode 100644
index 00000000..3b0a7da6
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    // ANCHOR: here
+    let mut s = String::from("hello");
+
+    let r1 = &s; // no problem
+    let r2 = &s; // no problem
+    println!("{} and {}", r1, r2);
+    // r1 and r2 are no longer used after this point
+
+    let r3 = &mut s; // no problem
+    println!("{}", r3);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/output.txt b/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/output.txt
new file mode 100644
index 00000000..681bf734
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/output.txt
@@ -0,0 +1,16 @@
+$ cargo run
+   Compiling ownership v0.1.0 (file:///projects/ownership)
+error[E0106]: missing lifetime specifier
+ --> src/main.rs:5:16
+  |
+5 | fn dangle() -> &String {
+  |                ^ help: consider giving it a 'static lifetime: `&'static`
+  |
+  = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0106`.
+error: Could not compile `ownership`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/src/main.rs b/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/src/main.rs
new file mode 100644
index 00000000..b1026978
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let reference_to_nothing = dangle();
+}
+
+fn dangle() -> &String {
+    let s = String::from("hello");
+
+    &s
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-15-dangling-reference-annotated/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-15-dangling-reference-annotated/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-15-dangling-reference-annotated/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-15-dangling-reference-annotated/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-15-dangling-reference-annotated/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-15-dangling-reference-annotated/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-15-dangling-reference-annotated/src/main.rs b/listings/ch04-understanding-ownership/no-listing-15-dangling-reference-annotated/src/main.rs
new file mode 100644
index 00000000..9fbb372a
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-15-dangling-reference-annotated/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    let reference_to_nothing = dangle();
+}
+
+// ANCHOR: here
+fn dangle() -> &String { // dangle returns a reference to a String
+
+    let s = String::from("hello"); // s is a new String
+
+    &s // we return a reference to the String, s
+} // Here, s goes out of scope, and is dropped. Its memory goes away.
+  // Danger!
+// ANCHOR_END: here
diff --git a/listings/ch04-understanding-ownership/no-listing-16-no-dangle/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-16-no-dangle/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-16-no-dangle/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-16-no-dangle/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-16-no-dangle/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-16-no-dangle/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-16-no-dangle/src/main.rs b/listings/ch04-understanding-ownership/no-listing-16-no-dangle/src/main.rs
new file mode 100644
index 00000000..9c20a3b2
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-16-no-dangle/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    let string = no_dangle();
+}
+
+// ANCHOR: here
+fn no_dangle() -> String {
+    let s = String::from("hello");
+
+    s
+}
+// ANCHOR_END: here
diff --git a/listings/ch04-understanding-ownership/no-listing-17-slice/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-17-slice/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-17-slice/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-17-slice/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-17-slice/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-17-slice/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-17-slice/src/main.rs b/listings/ch04-understanding-ownership/no-listing-17-slice/src/main.rs
new file mode 100644
index 00000000..44163af9
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-17-slice/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let s = String::from("hello world");
+
+    let hello = &s[0..5];
+    let world = &s[6..11];
+    // ANCHOR_END: here
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-18-first-word-slice/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-18-first-word-slice/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-18-first-word-slice/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-18-first-word-slice/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-18-first-word-slice/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-18-first-word-slice/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-18-first-word-slice/src/main.rs b/listings/ch04-understanding-ownership/no-listing-18-first-word-slice/src/main.rs
new file mode 100644
index 00000000..ffe53251
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-18-first-word-slice/src/main.rs
@@ -0,0 +1,16 @@
+// ANCHOR: here
+fn first_word(s: &String) -> &str {
+    let bytes = s.as_bytes();
+
+    for (i, &item) in bytes.iter().enumerate() {
+        if item == b' ' {
+            return &s[0..i];
+        }
+    }
+
+    &s[..]
+}
+// ANCHOR_END: here
+
+fn main() {
+}
diff --git a/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.lock b/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.toml b/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-19-slice-error/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch04-understanding-ownership/no-listing-19-slice-error/output.txt b/listings/ch04-understanding-ownership/no-listing-19-slice-error/output.txt
new file mode 100644
index 00000000..4725aa18
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-19-slice-error/output.txt
@@ -0,0 +1,20 @@
+$ cargo run
+   Compiling ownership v0.1.0 (file:///projects/ownership)
+error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immutable
+  --> src/main.rs:18:5
+   |
+16 |     let word = first_word(&s);
+   |                           -- immutable borrow occurs here
+17 | 
+18 |     s.clear(); // error!
+   |     ^^^^^^^^^ mutable borrow occurs here
+19 | 
+20 |     println!("the first word is: {}", word);
+   |                                       ---- immutable borrow later used here
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0502`.
+error: Could not compile `ownership`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch04-understanding-ownership/no-listing-19-slice-error/src/main.rs b/listings/ch04-understanding-ownership/no-listing-19-slice-error/src/main.rs
new file mode 100644
index 00000000..99e04018
--- /dev/null
+++ b/listings/ch04-understanding-ownership/no-listing-19-slice-error/src/main.rs
@@ -0,0 +1,23 @@
+fn first_word(s: &String) -> &str {
+    let bytes = s.as_bytes();
+
+    for (i, &item) in bytes.iter().enumerate() {
+        if item == b' ' {
+            return &s[0..i];
+        }
+    }
+
+    &s[..]
+}
+
+// ANCHOR: here
+fn main() {
+    let mut s = String::from("hello world");
+
+    let word = first_word(&s);
+
+    s.clear(); // error!
+
+    println!("the first word is: {}", word);
+}
+// ANCHOR_END: here
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-01/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-01/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-01/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-01/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-01/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-01/src/main.rs
new file mode 100644
index 00000000..01bf0aa6
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-01/src/main.rs
@@ -0,0 +1,11 @@
+// ANCHOR: here
+struct User {
+    username: String,
+    email: String,
+    sign_in_count: u64,
+    active: bool,
+}
+// ANCHOR_END: here
+
+fn main() {
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-02/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-02/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-02/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-02/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-02/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-02/src/main.rs
new file mode 100644
index 00000000..390c8ff1
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-02/src/main.rs
@@ -0,0 +1,17 @@
+struct User {
+    username: String,
+    email: String,
+    sign_in_count: u64,
+    active: bool,
+}
+
+fn main() {
+    // ANCHOR: here
+    let user1 = User {
+        email: String::from("someone@example.com"),
+        username: String::from("someusername123"),
+        active: true,
+        sign_in_count: 1,
+    };
+    // ANCHOR_END: here
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-03/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-03/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-03/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-03/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-03/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-03/src/main.rs
new file mode 100644
index 00000000..15919f68
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-03/src/main.rs
@@ -0,0 +1,19 @@
+struct User {
+    username: String,
+    email: String,
+    sign_in_count: u64,
+    active: bool,
+}
+
+fn main() {
+    // ANCHOR: here
+    let mut user1 = User {
+        email: String::from("someone@example.com"),
+        username: String::from("someusername123"),
+        active: true,
+        sign_in_count: 1,
+    };
+
+    user1.email = String::from("anotheremail@example.com");
+    // ANCHOR_END: here
+}
\ No newline at end of file
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-04/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-04/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-04/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-04/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-04/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-04/src/main.rs
new file mode 100644
index 00000000..e81e37c8
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-04/src/main.rs
@@ -0,0 +1,21 @@
+struct User {
+    username: String,
+    email: String,
+    sign_in_count: u64,
+    active: bool,
+}
+
+// ANCHOR: here
+fn build_user(email: String, username: String) -> User {
+    User {
+        email: email,
+        username: username,
+        active: true,
+        sign_in_count: 1,
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let user1 = build_user(String::from("someone@example.com"), String::from("someusername123"));
+}
\ No newline at end of file
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-05/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-05/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-05/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-05/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-05/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-05/src/main.rs
new file mode 100644
index 00000000..40c9d7c9
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-05/src/main.rs
@@ -0,0 +1,21 @@
+struct User {
+    username: String,
+    email: String,
+    sign_in_count: u64,
+    active: bool,
+}
+
+// ANCHOR: here
+fn build_user(email: String, username: String) -> User {
+    User {
+        email,
+        username,
+        active: true,
+        sign_in_count: 1,
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let user1 = build_user(String::from("someone@example.com"), String::from("someusername123"));
+}
\ No newline at end of file
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-06/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-06/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-06/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-06/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-06/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-06/src/main.rs
new file mode 100644
index 00000000..6c6d83d9
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-06/src/main.rs
@@ -0,0 +1,24 @@
+struct User {
+    username: String,
+    email: String,
+    sign_in_count: u64,
+    active: bool,
+}
+
+fn main() {
+    let user1 = User {
+        email: String::from("someone@example.com"),
+        username: String::from("someusername123"),
+        active: true,
+        sign_in_count: 1,
+    };
+
+    // ANCHOR: here
+    let user2 = User {
+        email: String::from("another@example.com"),
+        username: String::from("anotherusername567"),
+        active: user1.active,
+        sign_in_count: user1.sign_in_count,
+    };
+    // ANCHOR_END: here
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-07/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-07/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-07/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-07/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-07/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-07/src/main.rs
new file mode 100644
index 00000000..17cef457
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-07/src/main.rs
@@ -0,0 +1,23 @@
+struct User {
+    username: String,
+    email: String,
+    sign_in_count: u64,
+    active: bool,
+}
+
+fn main() {
+    let user1 = User {
+        email: String::from("someone@example.com"),
+        username: String::from("someusername123"),
+        active: true,
+        sign_in_count: 1,
+    };
+
+    // ANCHOR: here
+    let user2 = User {
+        email: String::from("another@example.com"),
+        username: String::from("anotherusername567"),
+        ..user1
+    };
+    // ANCHOR_END: here
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-08/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-08/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-08/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-08/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-08/output.txt b/listings/ch05-using-structs-to-structure-related-data/listing-05-08/output.txt
new file mode 100644
index 00000000..88e10d32
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-08/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling structs v0.1.0 (file:///projects/structs)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.42s
+     Running `target/debug/structs`
+The area of the rectangle is 1500 square pixels.
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-08/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-08/src/main.rs
new file mode 100644
index 00000000..f324529f
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-08/src/main.rs
@@ -0,0 +1,17 @@
+// ANCHOR: all
+fn main() {
+    let width1 = 30;
+    let height1 = 50;
+
+    println!(
+        "The area of the rectangle is {} square pixels.",
+        area(width1, height1)
+    );
+}
+
+// ANCHOR: here
+fn area(width: u32, height: u32) -> u32 {
+    // ANCHOR_END: here
+    width * height
+}
+// ANCHOR_END: all
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-09/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-09/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-09/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-09/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-09/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-09/src/main.rs
new file mode 100644
index 00000000..d4b77ba7
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-09/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    let rect1 = (30, 50);
+
+    println!(
+        "The area of the rectangle is {} square pixels.",
+        area(rect1)
+    );
+}
+
+fn area(dimensions: (u32, u32)) -> u32 {
+    dimensions.0 * dimensions.1
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-10/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-10/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-10/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-10/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-10/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-10/src/main.rs
new file mode 100644
index 00000000..67cabcc1
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-10/src/main.rs
@@ -0,0 +1,17 @@
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+fn main() {
+    let rect1 = Rectangle { width: 30, height: 50 };
+
+    println!(
+        "The area of the rectangle is {} square pixels.",
+        area(&rect1)
+    );
+}
+
+fn area(rectangle: &Rectangle) -> u32 {
+    rectangle.width * rectangle.height
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-11/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-11/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-11/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-11/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-11/output.txt b/listings/ch05-using-structs-to-structure-related-data/listing-05-11/output.txt
new file mode 100644
index 00000000..eb3e23f9
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-11/output.txt
@@ -0,0 +1,18 @@
+$ cargo run
+   Compiling structs v0.1.0 (file:///projects/structs)
+error[E0277]: `Rectangle` doesn't implement `std::fmt::Display`
+ --> src/main.rs:9:29
+  |
+9 |     println!("rect1 is {}", rect1);
+  |                             ^^^^^ `Rectangle` cannot be formatted with the default formatter
+  |
+  = help: the trait `std::fmt::Display` is not implemented for `Rectangle`
+  = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
+  = note: required by `std::fmt::Display::fmt`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
+error: Could not compile `structs`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-11/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-11/src/main.rs
new file mode 100644
index 00000000..e494ffc9
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-11/src/main.rs
@@ -0,0 +1,10 @@
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+fn main() {
+    let rect1 = Rectangle { width: 30, height: 50 };
+
+    println!("rect1 is {}", rect1);
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-12/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-12/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-12/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-12/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-12/output.txt b/listings/ch05-using-structs-to-structure-related-data/listing-05-12/output.txt
new file mode 100644
index 00000000..3abfb425
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-12/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling structs v0.1.0 (file:///projects/structs)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.48s
+     Running `target/debug/structs`
+rect1 is Rectangle { width: 30, height: 50 }
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-12/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-12/src/main.rs
new file mode 100644
index 00000000..3f33dd74
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-12/src/main.rs
@@ -0,0 +1,11 @@
+#[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+fn main() {
+    let rect1 = Rectangle { width: 30, height: 50 };
+
+    println!("rect1 is {:?}", rect1);
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-13/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-13/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-13/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-13/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-13/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-13/src/main.rs
new file mode 100644
index 00000000..7b39830c
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-13/src/main.rs
@@ -0,0 +1,20 @@
+#[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+impl Rectangle {
+    fn area(&self) -> u32 {
+        self.width * self.height
+    }
+}
+
+fn main() {
+    let rect1 = Rectangle { width: 30, height: 50 };
+
+    println!(
+        "The area of the rectangle is {} square pixels.",
+        rect1.area()
+    );
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-14/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-14/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-14/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-14/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-14/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-14/src/main.rs
new file mode 100644
index 00000000..29283d08
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-14/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    let rect1 = Rectangle { width: 30, height: 50 };
+    let rect2 = Rectangle { width: 10, height: 40 };
+    let rect3 = Rectangle { width: 60, height: 45 };
+
+    println!("Can rect1 hold rect2? {}", rect1.can_hold(&rect2));
+    println!("Can rect1 hold rect3? {}", rect1.can_hold(&rect3));
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-15/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-15/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-15/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-15/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-15/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-15/src/main.rs
new file mode 100644
index 00000000..5dd554ea
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-15/src/main.rs
@@ -0,0 +1,26 @@
+#[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+// ANCHOR: here
+impl Rectangle {
+    fn area(&self) -> u32 {
+        self.width * self.height
+    }
+
+    fn can_hold(&self, other: &Rectangle) -> bool {
+        self.width > other.width && self.height > other.height
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let rect1 = Rectangle { width: 30, height: 50 };
+    let rect2 = Rectangle { width: 10, height: 40 };
+    let rect3 = Rectangle { width: 60, height: 45 };
+
+    println!("Can rect1 hold rect2? {}", rect1.can_hold(&rect2));
+    println!("Can rect1 hold rect3? {}", rect1.can_hold(&rect3));
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-16/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/listing-05-16/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-16/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-16/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/listing-05-16/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-16/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-16/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-16/src/main.rs
new file mode 100644
index 00000000..89be55a0
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-16/src/main.rs
@@ -0,0 +1,29 @@
+#[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+// ANCHOR: here
+impl Rectangle {
+    fn area(&self) -> u32 {
+        self.width * self.height
+    }
+}
+
+impl Rectangle {
+    fn can_hold(&self, other: &Rectangle) -> bool {
+        self.width > other.width && self.height > other.height
+    }
+}
+// ANCHOR_END: here
+
+
+fn main() {
+    let rect1 = Rectangle { width: 30, height: 50 };
+    let rect2 = Rectangle { width: 10, height: 40 };
+    let rect3 = Rectangle { width: 60, height: 45 };
+
+    println!("Can rect1 hold rect2? {}", rect1.can_hold(&rect2));
+    println!("Can rect1 hold rect3? {}", rect1.can_hold(&rect3));
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-01-tuple-structs/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/no-listing-01-tuple-structs/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-01-tuple-structs/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-01-tuple-structs/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/no-listing-01-tuple-structs/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-01-tuple-structs/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-01-tuple-structs/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/no-listing-01-tuple-structs/src/main.rs
new file mode 100644
index 00000000..4c92c5d7
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-01-tuple-structs/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    struct Color(i32, i32, i32);
+    struct Point(i32, i32, i32);
+
+    let black = Color(0, 0, 0);
+    let origin = Point(0, 0, 0);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/Cargo.lock
new file mode 100644
index 00000000..bede081a
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/Cargo.toml
new file mode 100644
index 00000000..dec1c4bd
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/output.txt b/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/output.txt
new file mode 100644
index 00000000..1292e51e
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/output.txt
@@ -0,0 +1,20 @@
+$ cargo run
+   Compiling structs v0.1.0 (file:///projects/structs)
+error[E0106]: missing lifetime specifier
+ --> src/main.rs:2:15
+  |
+2 |     username: &str,
+  |               ^ expected lifetime parameter
+
+error[E0106]: missing lifetime specifier
+ --> src/main.rs:3:12
+  |
+3 |     email: &str,
+  |            ^ expected lifetime parameter
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0106`.
+error: Could not compile `structs`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/src/main.rs
new file mode 100644
index 00000000..3cf6ffa4
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/src/main.rs
@@ -0,0 +1,15 @@
+struct User {
+    username: &str,
+    email: &str,
+    sign_in_count: u64,
+    active: bool,
+}
+
+fn main() {
+    let user1 = User {
+        email: "someone@example.com",
+        username: "someusername123",
+        active: true,
+        sign_in_count: 1,
+    };
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/src/main.rs
new file mode 100644
index 00000000..8b1d5abc
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/src/main.rs
@@ -0,0 +1,17 @@
+#[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+// ANCHOR: here
+impl Rectangle {
+    fn square(size: u32) -> Rectangle {
+        Rectangle { width: size, height: size }
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let sq = Rectangle::square(3);
+}
\ No newline at end of file
diff --git a/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/output.txt b/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/output.txt
new file mode 100644
index 00000000..d1902d02
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/output.txt
@@ -0,0 +1,18 @@
+$ cargo run
+   Compiling structs v0.1.0 (file:///projects/structs)
+error[E0277]: `Rectangle` doesn't implement `std::fmt::Debug`
+ --> src/main.rs:9:31
+  |
+9 |     println!("rect1 is {:?}", rect1);
+  |                               ^^^^^ `Rectangle` cannot be formatted using `{:?}`
+  |
+  = help: the trait `std::fmt::Debug` is not implemented for `Rectangle`
+  = note: add `#[derive(Debug)]` or manually implement `std::fmt::Debug`
+  = note: required by `std::fmt::Debug::fmt`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
+error: Could not compile `structs`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/src/main.rs
new file mode 100644
index 00000000..1b3e5783
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/src/main.rs
@@ -0,0 +1,10 @@
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+fn main() {
+    let rect1 = Rectangle { width: 30, height: 50 };
+
+    println!("rect1 is {:?}", rect1);
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/Cargo.lock b/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/Cargo.lock
new file mode 100644
index 00000000..25b0b721
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "structs"
+version = "0.1.0"
+
diff --git a/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/Cargo.toml b/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/Cargo.toml
new file mode 100644
index 00000000..431e5c30
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "structs"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/output.txt b/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/output.txt
new file mode 100644
index 00000000..099ef9ea
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/output.txt
@@ -0,0 +1,8 @@
+$ cargo run
+   Compiling structs v0.1.0 (file:///projects/structs)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.48s
+     Running `target/debug/structs`
+rect1 is Rectangle {
+    width: 30,
+    height: 50,
+}
diff --git a/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/src/main.rs
new file mode 100644
index 00000000..3cd1e8ce
--- /dev/null
+++ b/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/src/main.rs
@@ -0,0 +1,11 @@
+#[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+fn main() {
+    let rect1 = Rectangle { width: 30, height: 50 };
+
+    println!("rect1 is {:#?}", rect1);
+}
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-01/Cargo.lock b/listings/ch06-enums-and-pattern-matching/listing-06-01/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-01/Cargo.toml b/listings/ch06-enums-and-pattern-matching/listing-06-01/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-01/src/main.rs b/listings/ch06-enums-and-pattern-matching/listing-06-01/src/main.rs
new file mode 100644
index 00000000..5b688e0f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-01/src/main.rs
@@ -0,0 +1,23 @@
+fn main() {
+    // ANCHOR: here
+    enum IpAddrKind {
+        V4,
+        V6,
+    }
+
+    struct IpAddr {
+        kind: IpAddrKind,
+        address: String,
+    }
+
+    let home = IpAddr {
+        kind: IpAddrKind::V4,
+        address: String::from("127.0.0.1"),
+    };
+
+    let loopback = IpAddr {
+        kind: IpAddrKind::V6,
+        address: String::from("::1"),
+    };
+    // ANCHOR_END: here
+}
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-02/Cargo.lock b/listings/ch06-enums-and-pattern-matching/listing-06-02/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-02/Cargo.toml b/listings/ch06-enums-and-pattern-matching/listing-06-02/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-02/src/main.rs b/listings/ch06-enums-and-pattern-matching/listing-06-02/src/main.rs
new file mode 100644
index 00000000..3ba74978
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-02/src/main.rs
@@ -0,0 +1,10 @@
+// ANCHOR: here
+enum Message {
+    Quit,
+    Move { x: i32, y: i32 },
+    Write(String),
+    ChangeColor(i32, i32, i32),
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-03/Cargo.lock b/listings/ch06-enums-and-pattern-matching/listing-06-03/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-03/Cargo.toml b/listings/ch06-enums-and-pattern-matching/listing-06-03/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-03/src/main.rs b/listings/ch06-enums-and-pattern-matching/listing-06-03/src/main.rs
new file mode 100644
index 00000000..6007e4ce
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-03/src/main.rs
@@ -0,0 +1,19 @@
+// ANCHOR: here
+enum Coin {
+    Penny,
+    Nickel,
+    Dime,
+    Quarter,
+}
+
+fn value_in_cents(coin: Coin) -> u8 {
+    match coin {
+        Coin::Penny => 1,
+        Coin::Nickel => 5,
+        Coin::Dime => 10,
+        Coin::Quarter => 25,
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
\ No newline at end of file
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-04/Cargo.lock b/listings/ch06-enums-and-pattern-matching/listing-06-04/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-04/Cargo.toml b/listings/ch06-enums-and-pattern-matching/listing-06-04/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-04/src/main.rs b/listings/ch06-enums-and-pattern-matching/listing-06-04/src/main.rs
new file mode 100644
index 00000000..3ba384fb
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-04/src/main.rs
@@ -0,0 +1,17 @@
+// ANCHOR: here
+#[derive(Debug)] // so we can inspect the state in a minute
+enum UsState {
+    Alabama,
+    Alaska,
+    // --snip--
+}
+
+enum Coin {
+    Penny,
+    Nickel,
+    Dime,
+    Quarter(UsState),
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.lock b/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.toml b/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-05/src/main.rs b/listings/ch06-enums-and-pattern-matching/listing-06-05/src/main.rs
new file mode 100644
index 00000000..c86190aa
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-05/src/main.rs
@@ -0,0 +1,18 @@
+fn main() {
+    // ANCHOR: here
+    fn plus_one(x: Option<i32>) -> Option<i32> {
+        match x {
+            // ANCHOR: first_arm
+            None => None,
+            // ANCHOR_END: first_arm
+            // ANCHOR: second_arm
+            Some(i) => Some(i + 1),
+            // ANCHOR_END: second_arm
+        }
+    }
+
+    let five = Some(5);
+    let six = plus_one(five);
+    let none = plus_one(None);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-06/Cargo.lock b/listings/ch06-enums-and-pattern-matching/listing-06-06/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-06/Cargo.toml b/listings/ch06-enums-and-pattern-matching/listing-06-06/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-06/src/main.rs b/listings/ch06-enums-and-pattern-matching/listing-06-06/src/main.rs
new file mode 100644
index 00000000..222d5455
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-06/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    let some_u8_value = Some(0u8);
+    match some_u8_value {
+        Some(3) => println!("three"),
+        _ => (),
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/src/main.rs
new file mode 100644
index 00000000..784119f7
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/src/main.rs
@@ -0,0 +1,22 @@
+// ANCHOR: def
+enum IpAddrKind {
+    V4,
+    V6,
+}
+// ANCHOR_END: def
+
+fn main() {
+    // ANCHOR: instance
+    let four = IpAddrKind::V4;
+    let six = IpAddrKind::V6;
+    // ANCHOR_END: instance
+
+    // ANCHOR: fn_call
+    route(IpAddrKind::V4);
+    route(IpAddrKind::V6);
+    // ANCHOR_END: fn_call
+}
+
+// ANCHOR: fn
+fn route(ip_kind: IpAddrKind) { }
+// ANCHOR_END: fn
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-02-enum-with-data/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-02-enum-with-data/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-02-enum-with-data/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-02-enum-with-data/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-02-enum-with-data/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-02-enum-with-data/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-02-enum-with-data/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-02-enum-with-data/src/main.rs
new file mode 100644
index 00000000..7d59b811
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-02-enum-with-data/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    // ANCHOR: here
+    enum IpAddr {
+        V4(String),
+        V6(String),
+    }
+
+    let home = IpAddr::V4(String::from("127.0.0.1"));
+
+    let loopback = IpAddr::V6(String::from("::1"));
+    // ANCHOR_END: here
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-03-variants-with-different-data/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-03-variants-with-different-data/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-03-variants-with-different-data/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-03-variants-with-different-data/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-03-variants-with-different-data/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-03-variants-with-different-data/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-03-variants-with-different-data/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-03-variants-with-different-data/src/main.rs
new file mode 100644
index 00000000..844a1404
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-03-variants-with-different-data/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    // ANCHOR: here
+    enum IpAddr {
+        V4(u8, u8, u8, u8),
+        V6(String),
+    }
+
+    let home = IpAddr::V4(127, 0, 0, 1);
+
+    let loopback = IpAddr::V6(String::from("::1"));
+    // ANCHOR_END: here
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-04-structs-similar-to-message-enum/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-04-structs-similar-to-message-enum/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-04-structs-similar-to-message-enum/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-04-structs-similar-to-message-enum/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-04-structs-similar-to-message-enum/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-04-structs-similar-to-message-enum/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-04-structs-similar-to-message-enum/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-04-structs-similar-to-message-enum/src/main.rs
new file mode 100644
index 00000000..a8e657ec
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-04-structs-similar-to-message-enum/src/main.rs
@@ -0,0 +1,12 @@
+// ANCHOR: here
+struct QuitMessage; // unit struct
+struct MoveMessage {
+    x: i32,
+    y: i32,
+}
+struct WriteMessage(String); // tuple struct
+struct ChangeColorMessage(i32, i32, i32); // tuple struct
+// ANCHOR_END: here
+
+fn main() {
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-05-methods-on-enums/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-05-methods-on-enums/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-05-methods-on-enums/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-05-methods-on-enums/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-05-methods-on-enums/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-05-methods-on-enums/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-05-methods-on-enums/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-05-methods-on-enums/src/main.rs
new file mode 100644
index 00000000..66e0b6da
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-05-methods-on-enums/src/main.rs
@@ -0,0 +1,19 @@
+fn main() {
+    enum Message {
+        Quit,
+        Move { x: i32, y: i32 },
+        Write(String),
+        ChangeColor(i32, i32, i32),
+    }
+
+    // ANCHOR: here
+    impl Message {
+        fn call(&self) {
+            // method body would be defined here
+        }
+    }
+
+    let m = Message::Write(String::from("hello"));
+    m.call();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-06-option-examples/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-06-option-examples/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-06-option-examples/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-06-option-examples/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-06-option-examples/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-06-option-examples/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-06-option-examples/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-06-option-examples/src/main.rs
new file mode 100644
index 00000000..9de5791b
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-06-option-examples/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let some_number = Some(5);
+    let some_string = Some("a string");
+
+    let absent_number: Option<i32> = None;
+    // ANCHOR_END: here
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/output.txt b/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/output.txt
new file mode 100644
index 00000000..21146004
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/output.txt
@@ -0,0 +1,16 @@
+$ cargo run
+   Compiling enums v0.1.0 (file:///projects/enums)
+error[E0277]: cannot add `std::option::Option<i8>` to `i8`
+ --> src/main.rs:5:17
+  |
+5 |     let sum = x + y;
+  |                 ^ no implementation for `i8 + std::option::Option<i8>`
+  |
+  = help: the trait `std::ops::Add<std::option::Option<i8>>` is not implemented for `i8`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
+error: Could not compile `enums`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/src/main.rs
new file mode 100644
index 00000000..ec65565d
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let x: i8 = 5;
+    let y: Option<i8> = Some(5);
+
+    let sum = x + y;
+    // ANCHOR_END: here
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-08-match-arm-multiple-lines/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-08-match-arm-multiple-lines/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-08-match-arm-multiple-lines/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-08-match-arm-multiple-lines/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-08-match-arm-multiple-lines/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-08-match-arm-multiple-lines/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-08-match-arm-multiple-lines/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-08-match-arm-multiple-lines/src/main.rs
new file mode 100644
index 00000000..ac786e1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-08-match-arm-multiple-lines/src/main.rs
@@ -0,0 +1,22 @@
+enum Coin {
+    Penny,
+    Nickel,
+    Dime,
+    Quarter,
+}
+
+// ANCHOR: here
+fn value_in_cents(coin: Coin) -> u8 {
+    match coin {
+        Coin::Penny => {
+            println!("Lucky penny!");
+            1
+        },
+        Coin::Nickel => 5,
+        Coin::Dime => 10,
+        Coin::Quarter => 25,
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
\ No newline at end of file
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/src/main.rs
new file mode 100644
index 00000000..2cf79985
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/src/main.rs
@@ -0,0 +1,31 @@
+#[derive(Debug)]
+enum UsState {
+    Alabama,
+    Alaska,
+    // --snip--
+}
+
+enum Coin {
+    Penny,
+    Nickel,
+    Dime,
+    Quarter(UsState),
+}
+
+// ANCHOR: here
+fn value_in_cents(coin: Coin) -> u8 {
+    match coin {
+        Coin::Penny => 1,
+        Coin::Nickel => 5,
+        Coin::Dime => 10,
+        Coin::Quarter(state) => {
+            println!("State quarter from {:?}!", state);
+            25
+        },
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    value_in_cents(Coin::Quarter(UsState::Alaska));
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/output.txt b/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/output.txt
new file mode 100644
index 00000000..e6cb637a
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/output.txt
@@ -0,0 +1,16 @@
+$ cargo run
+   Compiling enums v0.1.0 (file:///projects/enums)
+error[E0004]: non-exhaustive patterns: `None` not covered
+ --> src/main.rs:3:15
+  |
+3 |         match x {
+  |               ^ pattern `None` not covered
+  |
+  = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0004`.
+error: Could not compile `enums`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/src/main.rs
new file mode 100644
index 00000000..f1963d0c
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    // ANCHOR: here
+    fn plus_one(x: Option<i32>) -> Option<i32> {
+        match x {
+            Some(i) => Some(i + 1),
+        }
+    }
+    // ANCHOR_END: here
+
+    let five = Some(5);
+    let six = plus_one(five);
+    let none = plus_one(None);
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-11-underscore-placeholder/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-11-underscore-placeholder/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-11-underscore-placeholder/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-11-underscore-placeholder/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-11-underscore-placeholder/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-11-underscore-placeholder/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-11-underscore-placeholder/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-11-underscore-placeholder/src/main.rs
new file mode 100644
index 00000000..6fc8ab05
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-11-underscore-placeholder/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    // ANCHOR: here
+    let some_u8_value = 0u8;
+    match some_u8_value {
+        1 => println!("one"),
+        3 => println!("three"),
+        5 => println!("five"),
+        7 => println!("seven"),
+        _ => (),
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/src/main.rs
new file mode 100644
index 00000000..fb6578cf
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    let some_u8_value = Some(0u8);
+    // ANCHOR: here
+    if let Some(3) = some_u8_value {
+        println!("three");
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/src/main.rs
new file mode 100644
index 00000000..12c4c0fe
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/src/main.rs
@@ -0,0 +1,24 @@
+#[derive(Debug)]
+enum UsState {
+    Alabama,
+    Alaska,
+    // --snip--
+}
+
+enum Coin {
+    Penny,
+    Nickel,
+    Dime,
+    Quarter(UsState),
+}
+
+fn main() {
+    let coin = Coin::Penny;
+    // ANCHOR: here
+    let mut count = 0;
+    match coin {
+        Coin::Quarter(state) => println!("State quarter from {:?}!", state),
+        _ => count += 1,
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/Cargo.lock b/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/Cargo.lock
new file mode 100644
index 00000000..d3577dda
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "enums"
+version = "0.1.0"
+
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/Cargo.toml b/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/Cargo.toml
new file mode 100644
index 00000000..04988d1f
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "enums"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/src/main.rs
new file mode 100644
index 00000000..ba7eda27
--- /dev/null
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/src/main.rs
@@ -0,0 +1,25 @@
+#[derive(Debug)]
+enum UsState {
+    Alabama,
+    Alaska,
+    // --snip--
+}
+
+enum Coin {
+    Penny,
+    Nickel,
+    Dime,
+    Quarter(UsState),
+}
+
+fn main() {
+    let coin = Coin::Penny;
+    // ANCHOR: here
+    let mut count = 0;
+    if let Coin::Quarter(state) = coin {
+        println!("State quarter from {:?}!", state);
+    } else {
+        count += 1;
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch07-managing-growing-projects/listing-07-01/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-01/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-01/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-01/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-01/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-01/src/lib.rs
new file mode 100644
index 00000000..0e40be70
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-01/src/lib.rs
@@ -0,0 +1,19 @@
+// ANCHOR: here
+mod front_of_house {
+    mod hosting {
+        fn add_to_waitlist() {}
+
+        fn seat_at_table() {}
+    }
+
+    mod serving {
+        fn take_order() {}
+
+        fn serve_order() {}
+
+        fn take_payment() {}
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch07-managing-growing-projects/listing-07-03/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-03/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-03/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-03/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-03/output.txt b/listings/ch07-managing-growing-projects/listing-07-03/output.txt
new file mode 100644
index 00000000..40fedb20
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-03/output.txt
@@ -0,0 +1,20 @@
+$ cargo build
+   Compiling restaurant v0.1.0 (file:///projects/restaurant)
+error[E0603]: module `hosting` is private
+ --> src/lib.rs:9:28
+  |
+9 |     crate::front_of_house::hosting::add_to_waitlist();
+  |                            ^^^^^^^
+
+error[E0603]: module `hosting` is private
+  --> src/lib.rs:12:21
+   |
+12 |     front_of_house::hosting::add_to_waitlist();
+   |                     ^^^^^^^
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0603`.
+error: Could not compile `restaurant`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch07-managing-growing-projects/listing-07-03/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-03/src/lib.rs
new file mode 100644
index 00000000..0b8a43c6
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-03/src/lib.rs
@@ -0,0 +1,13 @@
+mod front_of_house {
+    mod hosting {
+        fn add_to_waitlist() {}
+    }
+}
+
+pub fn eat_at_restaurant() {
+    // Absolute path
+    crate::front_of_house::hosting::add_to_waitlist();
+
+    // Relative path
+    front_of_house::hosting::add_to_waitlist();
+}
diff --git a/listings/ch07-managing-growing-projects/listing-07-05/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-05/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-05/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-05/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-05/output.txt b/listings/ch07-managing-growing-projects/listing-07-05/output.txt
new file mode 100644
index 00000000..f02880d3
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-05/output.txt
@@ -0,0 +1,20 @@
+$ cargo build
+   Compiling restaurant v0.1.0 (file:///projects/restaurant)
+error[E0603]: function `add_to_waitlist` is private
+ --> src/lib.rs:9:37
+  |
+9 |     crate::front_of_house::hosting::add_to_waitlist();
+  |                                     ^^^^^^^^^^^^^^^
+
+error[E0603]: function `add_to_waitlist` is private
+  --> src/lib.rs:12:30
+   |
+12 |     front_of_house::hosting::add_to_waitlist();
+   |                              ^^^^^^^^^^^^^^^
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0603`.
+error: Could not compile `restaurant`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch07-managing-growing-projects/listing-07-05/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-05/src/lib.rs
new file mode 100644
index 00000000..05372dbe
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-05/src/lib.rs
@@ -0,0 +1,13 @@
+mod front_of_house {
+    pub mod hosting {
+        fn add_to_waitlist() {}
+    }
+}
+
+pub fn eat_at_restaurant() {
+    // Absolute path
+    crate::front_of_house::hosting::add_to_waitlist();
+
+    // Relative path
+    front_of_house::hosting::add_to_waitlist();
+}
diff --git a/listings/ch07-managing-growing-projects/listing-07-07/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-07/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-07/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-07/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-07/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-07/src/lib.rs
new file mode 100644
index 00000000..5a6edf98
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-07/src/lib.rs
@@ -0,0 +1,17 @@
+// ANCHOR: here
+mod front_of_house {
+    pub mod hosting {
+        pub fn add_to_waitlist() {}
+    }
+}
+
+pub fn eat_at_restaurant() {
+    // Absolute path
+    crate::front_of_house::hosting::add_to_waitlist();
+
+    // Relative path
+    front_of_house::hosting::add_to_waitlist();
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch07-managing-growing-projects/listing-07-08/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-08/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-08/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-08/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-08/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-08/src/lib.rs
new file mode 100644
index 00000000..ee3cf5ec
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-08/src/lib.rs
@@ -0,0 +1,14 @@
+// ANCHOR: here
+fn serve_order() {}
+
+mod back_of_house {
+    fn fix_incorrect_order() {
+        cook_order();
+        super::serve_order();
+    }
+
+    fn cook_order() {}
+}
+// ANCHOR_END: here
+
+fn main() {}
\ No newline at end of file
diff --git a/listings/ch07-managing-growing-projects/listing-07-09/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-09/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-09/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-09/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-09/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-09/src/lib.rs
new file mode 100644
index 00000000..92c4695d
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-09/src/lib.rs
@@ -0,0 +1,27 @@
+mod back_of_house {
+    pub struct Breakfast {
+        pub toast: String,
+        seasonal_fruit: String,
+    }
+
+    impl Breakfast {
+        pub fn summer(toast: &str) -> Breakfast {
+            Breakfast {
+                toast: String::from(toast),
+                seasonal_fruit: String::from("peaches"),
+            }
+        }
+    }
+}
+
+pub fn eat_at_restaurant() {
+    // Order a breakfast in the summer with Rye toast
+    let mut meal = back_of_house::Breakfast::summer("Rye");
+    // Change our mind about what bread we'd like
+    meal.toast = String::from("Wheat");
+    println!("I'd like {} toast please", meal.toast);
+
+    // The next line won't compile if we uncomment it; we're not allowed
+    // to see or modify the seasonal fruit that comes with the meal
+    // meal.seasonal_fruit = String::from("blueberries");
+}
diff --git a/listings/ch07-managing-growing-projects/listing-07-10/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-10/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-10/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-10/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-10/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-10/src/lib.rs
new file mode 100644
index 00000000..908f1dfb
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-10/src/lib.rs
@@ -0,0 +1,11 @@
+mod back_of_house {
+    pub enum Appetizer {
+        Soup,
+        Salad,
+    }
+}
+
+pub fn eat_at_restaurant() {
+    let order1 = back_of_house::Appetizer::Soup;
+    let order2 = back_of_house::Appetizer::Salad;
+}
diff --git a/listings/ch07-managing-growing-projects/listing-07-11/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-11/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-11/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-11/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-11/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-11/src/lib.rs
new file mode 100644
index 00000000..3a756837
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-11/src/lib.rs
@@ -0,0 +1,17 @@
+// ANCHOR: here
+mod front_of_house {
+    pub mod hosting {
+        pub fn add_to_waitlist() {}
+    }
+}
+
+use crate::front_of_house::hosting;
+
+pub fn eat_at_restaurant() {
+    hosting::add_to_waitlist();
+    hosting::add_to_waitlist();
+    hosting::add_to_waitlist();
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch07-managing-growing-projects/listing-07-12/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-12/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-12/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-12/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-12/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-12/src/lib.rs
new file mode 100644
index 00000000..6b0101b7
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-12/src/lib.rs
@@ -0,0 +1,17 @@
+// ANCHOR: here
+mod front_of_house {
+    pub mod hosting {
+        pub fn add_to_waitlist() {}
+    }
+}
+
+use self::front_of_house::hosting;
+
+pub fn eat_at_restaurant() {
+    hosting::add_to_waitlist();
+    hosting::add_to_waitlist();
+    hosting::add_to_waitlist();
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch07-managing-growing-projects/listing-07-13/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-13/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-13/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-13/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-13/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-13/src/lib.rs
new file mode 100644
index 00000000..98414aac
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-13/src/lib.rs
@@ -0,0 +1,17 @@
+// ANCHOR: here
+mod front_of_house {
+    pub mod hosting {
+        pub fn add_to_waitlist() {}
+    }
+}
+
+use crate::front_of_house::hosting::add_to_waitlist;
+
+pub fn eat_at_restaurant() {
+    add_to_waitlist();
+    add_to_waitlist();
+    add_to_waitlist();
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch07-managing-growing-projects/listing-07-14/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-14/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-14/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-14/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-14/src/main.rs b/listings/ch07-managing-growing-projects/listing-07-14/src/main.rs
new file mode 100644
index 00000000..4379e7c7
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-14/src/main.rs
@@ -0,0 +1,6 @@
+use std::collections::HashMap;
+
+fn main() {
+    let mut map = HashMap::new();
+    map.insert(1, 2);
+}
diff --git a/listings/ch07-managing-growing-projects/listing-07-15/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-15/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-15/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-15/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-15/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-15/src/lib.rs
new file mode 100644
index 00000000..bfac3a07
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-15/src/lib.rs
@@ -0,0 +1,18 @@
+// ANCHOR: here
+use std::fmt;
+use std::io;
+
+fn function1() -> fmt::Result {
+    // --snip--
+    // ANCHOR_END: here
+    Ok(())
+    // ANCHOR: here
+}
+
+fn function2() -> io::Result<()> {
+    // --snip--
+    // ANCHOR_END: here
+    Ok(())
+    // ANCHOR: here
+}
+// ANCHOR_END: here
diff --git a/listings/ch07-managing-growing-projects/listing-07-16/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-16/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-16/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-16/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-16/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-16/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-16/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-16/src/lib.rs
new file mode 100644
index 00000000..843490b4
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-16/src/lib.rs
@@ -0,0 +1,18 @@
+// ANCHOR: here
+use std::fmt::Result;
+use std::io::Result as IoResult;
+
+fn function1() -> Result {
+    // --snip--
+    // ANCHOR_END: here
+    Ok(())
+    // ANCHOR: here
+}
+
+fn function2() -> IoResult<()> {
+    // --snip--
+    // ANCHOR_END: here
+    Ok(())
+    // ANCHOR: here
+}
+// ANCHOR_END: here
diff --git a/listings/ch07-managing-growing-projects/listing-07-17/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-17/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-17/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-17/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-17/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-17/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-17/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-17/src/lib.rs
new file mode 100644
index 00000000..e948d7c3
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-17/src/lib.rs
@@ -0,0 +1,17 @@
+// ANCHOR: here
+mod front_of_house {
+    pub mod hosting {
+        pub fn add_to_waitlist() {}
+    }
+}
+
+pub use crate::front_of_house::hosting;
+
+pub fn eat_at_restaurant() {
+    hosting::add_to_waitlist();
+    hosting::add_to_waitlist();
+    hosting::add_to_waitlist();
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch07-managing-growing-projects/listing-07-18/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-18/Cargo.lock
new file mode 100644
index 00000000..2e0b103b
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-18/Cargo.lock
@@ -0,0 +1,89 @@
+[[package]]
+name = "fuchsia-cprng"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+dependencies = [
+ "rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.53"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "rand"
+version = "0.3.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
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+[[package]]
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+[[package]]
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+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[metadata]
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diff --git a/listings/ch07-managing-growing-projects/listing-07-18/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-18/Cargo.toml
new file mode 100644
index 00000000..ad5ca696
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-18/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch07-managing-growing-projects/listing-07-18/src/main.rs b/listings/ch07-managing-growing-projects/listing-07-18/src/main.rs
new file mode 100644
index 00000000..0d23c367
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-18/src/main.rs
@@ -0,0 +1,28 @@
+use std::{cmp::Ordering, io};
+use rand::Rng;
+
+fn main() {
+    println!("Guess the number!");
+
+    let secret_number = rand::thread_rng().gen_range(1, 101);
+
+    println!("The secret number is: {}", secret_number);
+
+    println!("Please input your guess.");
+
+    let mut guess = String::new();
+
+    io::stdin().read_line(&mut guess)
+        .expect("Failed to read line");
+
+    let guess: u32 = guess.trim().parse()
+        .expect("Please type a number!");
+
+    println!("You guessed: {}", guess);
+
+    match guess.cmp(&secret_number) {
+        Ordering::Less => println!("Too small!"),
+        Ordering::Greater => println!("Too big!"),
+        Ordering::Equal => println!("You win!"),
+    }
+}
diff --git a/listings/ch07-managing-growing-projects/listing-07-19/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-19/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-19/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-19/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-19/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-19/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-19/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-19/src/lib.rs
new file mode 100644
index 00000000..3fee46c4
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-19/src/lib.rs
@@ -0,0 +1,2 @@
+use std::io;
+use std::io::Write;
diff --git a/listings/ch07-managing-growing-projects/listing-07-20/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-20/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-20/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-20/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-20/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-20/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-20/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-20/src/lib.rs
new file mode 100644
index 00000000..341f40a4
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-20/src/lib.rs
@@ -0,0 +1 @@
+use std::io::{self, Write};
diff --git a/listings/ch07-managing-growing-projects/listing-07-21-and-22/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-21-and-22/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-21-and-22/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/listing-07-21-and-22/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-21-and-22/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-21-and-22/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/listing-07-21-and-22/src/front_of_house.rs b/listings/ch07-managing-growing-projects/listing-07-21-and-22/src/front_of_house.rs
new file mode 100644
index 00000000..6875dfdb
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-21-and-22/src/front_of_house.rs
@@ -0,0 +1,3 @@
+pub mod hosting {
+    pub fn add_to_waitlist() {}
+}
diff --git a/listings/ch07-managing-growing-projects/listing-07-21-and-22/src/lib.rs b/listings/ch07-managing-growing-projects/listing-07-21-and-22/src/lib.rs
new file mode 100644
index 00000000..065b1b80
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/listing-07-21-and-22/src/lib.rs
@@ -0,0 +1,9 @@
+mod front_of_house;
+
+pub use crate::front_of_house::hosting;
+
+pub fn eat_at_restaurant() {
+    hosting::add_to_waitlist();
+    hosting::add_to_waitlist();
+    hosting::add_to_waitlist();
+}
diff --git a/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.lock b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.lock
new file mode 100644
index 00000000..2b3d41ad
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.lock
@@ -0,0 +1,87 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "bitflags"
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+
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+
+[[package]]
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diff --git a/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.toml b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.toml
new file mode 100644
index 00000000..10932024
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/src/main.rs b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/src/main.rs
new file mode 100644
index 00000000..5ccfb12a
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/src/main.rs
@@ -0,0 +1,29 @@
+// ANCHOR: here
+use std::io;
+use std::cmp::Ordering;
+// --snip--
+// ANCHOR_END: here
+use rand::Rng;
+
+fn main() {
+    println!("Guess the number!");
+
+    let secret_number = rand::thread_rng().gen_range(1, 101);
+
+    println!("The secret number is: {}", secret_number);
+
+    println!("Please input your guess.");
+
+    let mut guess = String::new();
+
+    io::stdin().read_line(&mut guess)
+        .expect("Failed to read line");
+
+    println!("You guessed: {}", guess);
+
+    match guess.cmp(&secret_number) {
+        Ordering::Less => println!("Too small!"),
+        Ordering::Greater => println!("Too big!"),
+        Ordering::Equal => println!("You win!"),
+    }
+}
diff --git a/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/Cargo.lock b/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/Cargo.lock
new file mode 100644
index 00000000..4e4270a2
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "restaurant"
+version = "0.1.0"
+
diff --git a/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/Cargo.toml b/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/Cargo.toml
new file mode 100644
index 00000000..8bdd0a41
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "restaurant"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/src/front_of_house.rs b/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/src/front_of_house.rs
new file mode 100644
index 00000000..d0a8154e
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/src/front_of_house.rs
@@ -0,0 +1 @@
+pub mod hosting;
diff --git a/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/src/front_of_house/hosting.rs b/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/src/front_of_house/hosting.rs
new file mode 100644
index 00000000..d65f3afd
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/src/front_of_house/hosting.rs
@@ -0,0 +1 @@
+pub fn add_to_waitlist() {}
diff --git a/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/src/lib.rs b/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/src/lib.rs
new file mode 100644
index 00000000..065b1b80
--- /dev/null
+++ b/listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/src/lib.rs
@@ -0,0 +1,9 @@
+mod front_of_house;
+
+pub use crate::front_of_house::hosting;
+
+pub fn eat_at_restaurant() {
+    hosting::add_to_waitlist();
+    hosting::add_to_waitlist();
+    hosting::add_to_waitlist();
+}
diff --git a/listings/ch08-common-collections/listing-08-01/Cargo.lock b/listings/ch08-common-collections/listing-08-01/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-01/Cargo.toml b/listings/ch08-common-collections/listing-08-01/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-01/src/main.rs b/listings/ch08-common-collections/listing-08-01/src/main.rs
new file mode 100644
index 00000000..45e45581
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-01/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    // ANCHOR: here
+    let v: Vec<i32> = Vec::new();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-02/Cargo.lock b/listings/ch08-common-collections/listing-08-02/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-02/Cargo.toml b/listings/ch08-common-collections/listing-08-02/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-02/src/main.rs b/listings/ch08-common-collections/listing-08-02/src/main.rs
new file mode 100644
index 00000000..3b10a53e
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-02/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    // ANCHOR: here
+    let v = vec![1, 2, 3];
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-03/Cargo.lock b/listings/ch08-common-collections/listing-08-03/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-03/Cargo.toml b/listings/ch08-common-collections/listing-08-03/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-03/src/main.rs b/listings/ch08-common-collections/listing-08-03/src/main.rs
new file mode 100644
index 00000000..147223f9
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-03/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    // ANCHOR: here
+    let mut v = Vec::new();
+
+    v.push(5);
+    v.push(6);
+    v.push(7);
+    v.push(8);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-04/Cargo.lock b/listings/ch08-common-collections/listing-08-04/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-04/Cargo.toml b/listings/ch08-common-collections/listing-08-04/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-04/src/main.rs b/listings/ch08-common-collections/listing-08-04/src/main.rs
new file mode 100644
index 00000000..7fd5a490
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-04/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    // ANCHOR: here
+    {
+        let v = vec![1, 2, 3, 4];
+
+        // do stuff with v
+
+    } // <- v goes out of scope and is freed here
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-05/Cargo.lock b/listings/ch08-common-collections/listing-08-05/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-05/Cargo.toml b/listings/ch08-common-collections/listing-08-05/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-05/src/main.rs b/listings/ch08-common-collections/listing-08-05/src/main.rs
new file mode 100644
index 00000000..9bfa37a4
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-05/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    // ANCHOR: here
+    let v = vec![1, 2, 3, 4, 5];
+
+    let third: &i32 = &v[2];
+    println!("The third element is {}", third);
+
+    match v.get(2) {
+        Some(third) => println!("The third element is {}", third),
+        None => println!("There is no third element."),
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-06/Cargo.lock b/listings/ch08-common-collections/listing-08-06/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-06/Cargo.toml b/listings/ch08-common-collections/listing-08-06/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-06/src/main.rs b/listings/ch08-common-collections/listing-08-06/src/main.rs
new file mode 100644
index 00000000..783d9b11
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-06/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let v = vec![1, 2, 3, 4, 5];
+
+    let does_not_exist = &v[100];
+    let does_not_exist = v.get(100);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-07/Cargo.lock b/listings/ch08-common-collections/listing-08-07/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-07/Cargo.toml b/listings/ch08-common-collections/listing-08-07/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-07/output.txt b/listings/ch08-common-collections/listing-08-07/output.txt
new file mode 100644
index 00000000..686c9098
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-07/output.txt
@@ -0,0 +1,20 @@
+$ cargo run
+   Compiling collections v0.1.0 (file:///projects/collections)
+error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
+ --> src/main.rs:6:5
+  |
+4 |     let first = &v[0];
+  |                  - immutable borrow occurs here
+5 | 
+6 |     v.push(6);
+  |     ^^^^^^^^^ mutable borrow occurs here
+7 | 
+8 |     println!("The first element is: {}", first);
+  |                                          ----- immutable borrow later used here
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0502`.
+error: Could not compile `collections`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch08-common-collections/listing-08-07/src/main.rs b/listings/ch08-common-collections/listing-08-07/src/main.rs
new file mode 100644
index 00000000..1b42274a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-07/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // ANCHOR: here
+    let mut v = vec![1, 2, 3, 4, 5];
+
+    let first = &v[0];
+
+    v.push(6);
+
+    println!("The first element is: {}", first);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-08/Cargo.lock b/listings/ch08-common-collections/listing-08-08/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-08/Cargo.toml b/listings/ch08-common-collections/listing-08-08/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-08/src/main.rs b/listings/ch08-common-collections/listing-08-08/src/main.rs
new file mode 100644
index 00000000..38b97784
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-08/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let v = vec![100, 32, 57];
+    for i in &v {
+        println!("{}", i);
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-09/Cargo.lock b/listings/ch08-common-collections/listing-08-09/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-09/Cargo.toml b/listings/ch08-common-collections/listing-08-09/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-09/src/main.rs b/listings/ch08-common-collections/listing-08-09/src/main.rs
new file mode 100644
index 00000000..c62ba21b
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-09/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let mut v = vec![100, 32, 57];
+    for i in &mut v {
+        *i += 50;
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-10/Cargo.lock b/listings/ch08-common-collections/listing-08-10/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-10/Cargo.toml b/listings/ch08-common-collections/listing-08-10/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-10/src/main.rs b/listings/ch08-common-collections/listing-08-10/src/main.rs
new file mode 100644
index 00000000..c2198883
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-10/src/main.rs
@@ -0,0 +1,15 @@
+fn main() {
+    // ANCHOR: here
+    enum SpreadsheetCell {
+        Int(i32),
+        Float(f64),
+        Text(String),
+    }
+
+    let row = vec![
+        SpreadsheetCell::Int(3),
+        SpreadsheetCell::Text(String::from("blue")),
+        SpreadsheetCell::Float(10.12),
+    ];
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-11/Cargo.lock b/listings/ch08-common-collections/listing-08-11/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-11/Cargo.toml b/listings/ch08-common-collections/listing-08-11/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-11/src/main.rs b/listings/ch08-common-collections/listing-08-11/src/main.rs
new file mode 100644
index 00000000..4cf4c81c
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-11/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    // ANCHOR: here
+    let mut s = String::new();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-12/Cargo.lock b/listings/ch08-common-collections/listing-08-12/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-12/Cargo.toml b/listings/ch08-common-collections/listing-08-12/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-12/src/main.rs b/listings/ch08-common-collections/listing-08-12/src/main.rs
new file mode 100644
index 00000000..d9e5e768
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-12/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    // ANCHOR: here
+    let data = "initial contents";
+
+    let s = data.to_string();
+
+    // the method also works on a literal directly:
+    let s = "initial contents".to_string();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-13/Cargo.lock b/listings/ch08-common-collections/listing-08-13/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-13/Cargo.toml b/listings/ch08-common-collections/listing-08-13/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-13/src/main.rs b/listings/ch08-common-collections/listing-08-13/src/main.rs
new file mode 100644
index 00000000..b81e3745
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-13/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    // ANCHOR: here
+    let s = String::from("initial contents");
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-14/Cargo.lock b/listings/ch08-common-collections/listing-08-14/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-14/Cargo.toml b/listings/ch08-common-collections/listing-08-14/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-14/src/main.rs b/listings/ch08-common-collections/listing-08-14/src/main.rs
new file mode 100644
index 00000000..f701fd57
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-14/src/main.rs
@@ -0,0 +1,19 @@
+fn main() {
+    // ANCHOR: here
+    let hello = String::from("السلام عليكم");
+    let hello = String::from("Dobrý den");
+    let hello = String::from("Hello");
+    let hello = String::from("שָׁלוֹם");
+    let hello = String::from("नमस्ते");
+    let hello = String::from("こんにちは");
+    let hello = String::from("안녕하세요");
+    let hello = String::from("你好");
+    let hello = String::from("Olá");
+    // ANCHOR: russian
+    let hello = String::from("Здравствуйте");
+    // ANCHOR_END: russian
+    // ANCHOR: spanish
+    let hello = String::from("Hola");
+    // ANCHOR_END: spanish
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-15/Cargo.lock b/listings/ch08-common-collections/listing-08-15/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-15/Cargo.toml b/listings/ch08-common-collections/listing-08-15/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-15/src/main.rs b/listings/ch08-common-collections/listing-08-15/src/main.rs
new file mode 100644
index 00000000..7dec657d
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-15/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    // ANCHOR: here
+    let mut s = String::from("foo");
+    s.push_str("bar");
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-16/Cargo.lock b/listings/ch08-common-collections/listing-08-16/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-16/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-16/Cargo.toml b/listings/ch08-common-collections/listing-08-16/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-16/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-16/src/main.rs b/listings/ch08-common-collections/listing-08-16/src/main.rs
new file mode 100644
index 00000000..8938dc14
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-16/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let mut s1 = String::from("foo");
+    let s2 = "bar";
+    s1.push_str(s2);
+    println!("s2 is {}", s2);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-17/Cargo.lock b/listings/ch08-common-collections/listing-08-17/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-17/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-17/Cargo.toml b/listings/ch08-common-collections/listing-08-17/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-17/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-17/src/main.rs b/listings/ch08-common-collections/listing-08-17/src/main.rs
new file mode 100644
index 00000000..0a9e8cc0
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-17/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    // ANCHOR: here
+    let mut s = String::from("lo");
+    s.push('l');
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-18/Cargo.lock b/listings/ch08-common-collections/listing-08-18/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-18/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-18/Cargo.toml b/listings/ch08-common-collections/listing-08-18/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-18/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-18/src/main.rs b/listings/ch08-common-collections/listing-08-18/src/main.rs
new file mode 100644
index 00000000..8e55dc51
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-18/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    // ANCHOR: here
+    let s1 = String::from("Hello, ");
+    let s2 = String::from("world!");
+    let s3 = s1 + &s2; // note s1 has been moved here and can no longer be used
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-19/Cargo.lock b/listings/ch08-common-collections/listing-08-19/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-19/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-19/Cargo.toml b/listings/ch08-common-collections/listing-08-19/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-19/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-19/output.txt b/listings/ch08-common-collections/listing-08-19/output.txt
new file mode 100644
index 00000000..2583f619
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-19/output.txt
@@ -0,0 +1,16 @@
+$ cargo run
+   Compiling collections v0.1.0 (file:///projects/collections)
+error[E0277]: the type `std::string::String` cannot be indexed by `{integer}`
+ --> src/main.rs:3:13
+  |
+3 |     let h = s1[0];
+  |             ^^^^^ `std::string::String` cannot be indexed by `{integer}`
+  |
+  = help: the trait `std::ops::Index<{integer}>` is not implemented for `std::string::String`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
+error: Could not compile `collections`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch08-common-collections/listing-08-19/src/main.rs b/listings/ch08-common-collections/listing-08-19/src/main.rs
new file mode 100644
index 00000000..fc08e9ce
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-19/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    // ANCHOR: here
+    let s1 = String::from("hello");
+    let h = s1[0];
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-20/Cargo.lock b/listings/ch08-common-collections/listing-08-20/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-20/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-20/Cargo.toml b/listings/ch08-common-collections/listing-08-20/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-20/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-20/src/main.rs b/listings/ch08-common-collections/listing-08-20/src/main.rs
new file mode 100644
index 00000000..54c20109
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-20/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    // ANCHOR: here
+    use std::collections::HashMap;
+
+    let mut scores = HashMap::new();
+
+    scores.insert(String::from("Blue"), 10);
+    scores.insert(String::from("Yellow"), 50);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-21/Cargo.lock b/listings/ch08-common-collections/listing-08-21/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-21/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-21/Cargo.toml b/listings/ch08-common-collections/listing-08-21/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-21/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-21/src/main.rs b/listings/ch08-common-collections/listing-08-21/src/main.rs
new file mode 100644
index 00000000..ce51345a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-21/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    // ANCHOR: here
+    use std::collections::HashMap;
+
+    let teams  = vec![String::from("Blue"), String::from("Yellow")];
+    let initial_scores = vec![10, 50];
+
+    let scores: HashMap<_, _> = teams.iter().zip(initial_scores.iter()).collect();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-22/Cargo.lock b/listings/ch08-common-collections/listing-08-22/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-22/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-22/Cargo.toml b/listings/ch08-common-collections/listing-08-22/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-22/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-22/src/main.rs b/listings/ch08-common-collections/listing-08-22/src/main.rs
new file mode 100644
index 00000000..2b2a73f9
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-22/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    // ANCHOR: here
+    use std::collections::HashMap;
+
+    let field_name = String::from("Favorite color");
+    let field_value = String::from("Blue");
+
+    let mut map = HashMap::new();
+    map.insert(field_name, field_value);
+    // field_name and field_value are invalid at this point, try using them and
+    // see what compiler error you get!
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-23/Cargo.lock b/listings/ch08-common-collections/listing-08-23/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-23/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-23/Cargo.toml b/listings/ch08-common-collections/listing-08-23/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-23/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-23/src/main.rs b/listings/ch08-common-collections/listing-08-23/src/main.rs
new file mode 100644
index 00000000..508e33cb
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-23/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    // ANCHOR: here
+    use std::collections::HashMap;
+
+    let mut scores = HashMap::new();
+
+    scores.insert(String::from("Blue"), 10);
+    scores.insert(String::from("Yellow"), 50);
+
+    let team_name = String::from("Blue");
+    let score = scores.get(&team_name);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-24/Cargo.lock b/listings/ch08-common-collections/listing-08-24/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-24/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-24/Cargo.toml b/listings/ch08-common-collections/listing-08-24/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-24/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-24/src/main.rs b/listings/ch08-common-collections/listing-08-24/src/main.rs
new file mode 100644
index 00000000..e8684cf2
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-24/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    // ANCHOR: here
+    use std::collections::HashMap;
+
+    let mut scores = HashMap::new();
+
+    scores.insert(String::from("Blue"), 10);
+    scores.insert(String::from("Blue"), 25);
+
+    println!("{:?}", scores);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-25/Cargo.lock b/listings/ch08-common-collections/listing-08-25/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-25/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-25/Cargo.toml b/listings/ch08-common-collections/listing-08-25/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-25/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-25/src/main.rs b/listings/ch08-common-collections/listing-08-25/src/main.rs
new file mode 100644
index 00000000..3ad97b57
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-25/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    // ANCHOR: here
+    use std::collections::HashMap;
+
+    let mut scores = HashMap::new();
+    scores.insert(String::from("Blue"), 10);
+
+    scores.entry(String::from("Yellow")).or_insert(50);
+    scores.entry(String::from("Blue")).or_insert(50);
+
+    println!("{:?}", scores);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/listing-08-26/Cargo.lock b/listings/ch08-common-collections/listing-08-26/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-26/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/listing-08-26/Cargo.toml b/listings/ch08-common-collections/listing-08-26/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-26/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/listing-08-26/src/main.rs b/listings/ch08-common-collections/listing-08-26/src/main.rs
new file mode 100644
index 00000000..f3f6aa16
--- /dev/null
+++ b/listings/ch08-common-collections/listing-08-26/src/main.rs
@@ -0,0 +1,16 @@
+fn main() {
+    // ANCHOR: here
+    use std::collections::HashMap;
+
+    let text = "hello world wonderful world";
+
+    let mut map = HashMap::new();
+
+    for word in text.split_whitespace() {
+        let count = map.entry(word).or_insert(0);
+        *count += 1;
+    }
+
+    println!("{:?}", map);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/no-listing-01-concat-multiple-strings/Cargo.lock b/listings/ch08-common-collections/no-listing-01-concat-multiple-strings/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/no-listing-01-concat-multiple-strings/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/no-listing-01-concat-multiple-strings/Cargo.toml b/listings/ch08-common-collections/no-listing-01-concat-multiple-strings/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/no-listing-01-concat-multiple-strings/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/no-listing-01-concat-multiple-strings/src/main.rs b/listings/ch08-common-collections/no-listing-01-concat-multiple-strings/src/main.rs
new file mode 100644
index 00000000..4995650d
--- /dev/null
+++ b/listings/ch08-common-collections/no-listing-01-concat-multiple-strings/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    let s1 = String::from("tic");
+    let s2 = String::from("tac");
+    let s3 = String::from("toe");
+
+    let s = s1 + "-" + &s2 + "-" + &s3;
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/no-listing-02-format/Cargo.lock b/listings/ch08-common-collections/no-listing-02-format/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/no-listing-02-format/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/no-listing-02-format/Cargo.toml b/listings/ch08-common-collections/no-listing-02-format/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/no-listing-02-format/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/no-listing-02-format/src/main.rs b/listings/ch08-common-collections/no-listing-02-format/src/main.rs
new file mode 100644
index 00000000..4a38e63d
--- /dev/null
+++ b/listings/ch08-common-collections/no-listing-02-format/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    let s1 = String::from("tic");
+    let s2 = String::from("tac");
+    let s3 = String::from("toe");
+
+    let s = format!("{}-{}-{}", s1, s2, s3);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/no-listing-03-iterate-over-hashmap/Cargo.lock b/listings/ch08-common-collections/no-listing-03-iterate-over-hashmap/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/no-listing-03-iterate-over-hashmap/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/no-listing-03-iterate-over-hashmap/Cargo.toml b/listings/ch08-common-collections/no-listing-03-iterate-over-hashmap/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/no-listing-03-iterate-over-hashmap/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/no-listing-03-iterate-over-hashmap/src/main.rs b/listings/ch08-common-collections/no-listing-03-iterate-over-hashmap/src/main.rs
new file mode 100644
index 00000000..2e7dc02e
--- /dev/null
+++ b/listings/ch08-common-collections/no-listing-03-iterate-over-hashmap/src/main.rs
@@ -0,0 +1,14 @@
+fn main() {
+    // ANCHOR: here
+    use std::collections::HashMap;
+
+    let mut scores = HashMap::new();
+
+    scores.insert(String::from("Blue"), 10);
+    scores.insert(String::from("Yellow"), 50);
+
+    for (key, value) in &scores {
+        println!("{}: {}", key, value);
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch08-common-collections/output-only-01-not-char-boundary/Cargo.lock b/listings/ch08-common-collections/output-only-01-not-char-boundary/Cargo.lock
new file mode 100644
index 00000000..14856a6a
--- /dev/null
+++ b/listings/ch08-common-collections/output-only-01-not-char-boundary/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "collections"
+version = "0.1.0"
+
diff --git a/listings/ch08-common-collections/output-only-01-not-char-boundary/Cargo.toml b/listings/ch08-common-collections/output-only-01-not-char-boundary/Cargo.toml
new file mode 100644
index 00000000..b36871be
--- /dev/null
+++ b/listings/ch08-common-collections/output-only-01-not-char-boundary/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "collections"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch08-common-collections/output-only-01-not-char-boundary/output.txt b/listings/ch08-common-collections/output-only-01-not-char-boundary/output.txt
new file mode 100644
index 00000000..449271dc
--- /dev/null
+++ b/listings/ch08-common-collections/output-only-01-not-char-boundary/output.txt
@@ -0,0 +1,6 @@
+$ cargo run
+   Compiling collections v0.1.0 (file:///projects/collections)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.43s
+     Running `target/debug/collections`
+thread 'main' panicked at 'byte index 1 is not a char boundary; it is inside 'З' (bytes 0..2) of `Здравствуйте`', src/libcore/str/mod.rs:2034:5
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
diff --git a/listings/ch08-common-collections/output-only-01-not-char-boundary/src/main.rs b/listings/ch08-common-collections/output-only-01-not-char-boundary/src/main.rs
new file mode 100644
index 00000000..9283ff5b
--- /dev/null
+++ b/listings/ch08-common-collections/output-only-01-not-char-boundary/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    let hello = "Здравствуйте";
+
+    let s = &hello[0..1];
+}
diff --git a/listings/ch09-error-handling/listing-09-01/Cargo.lock b/listings/ch09-error-handling/listing-09-01/Cargo.lock
new file mode 100644
index 00000000..4fe030fa
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-01/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "panic"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/listing-09-01/Cargo.toml b/listings/ch09-error-handling/listing-09-01/Cargo.toml
new file mode 100644
index 00000000..310342cd
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "panic"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/listing-09-01/output.txt b/listings/ch09-error-handling/listing-09-01/output.txt
new file mode 100644
index 00000000..67a4f959
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-01/output.txt
@@ -0,0 +1,6 @@
+$ cargo run
+   Compiling panic v0.1.0 (file:///projects/panic)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.27s
+     Running `target/debug/panic`
+thread 'main' panicked at 'index out of bounds: the len is 3 but the index is 99', /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/slice/mod.rs:2681:10
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
diff --git a/listings/ch09-error-handling/listing-09-01/src/main.rs b/listings/ch09-error-handling/listing-09-01/src/main.rs
new file mode 100644
index 00000000..70194abd
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-01/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    let v = vec![1, 2, 3];
+
+    v[99];
+}
diff --git a/listings/ch09-error-handling/listing-09-03/Cargo.lock b/listings/ch09-error-handling/listing-09-03/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/listing-09-03/Cargo.toml b/listings/ch09-error-handling/listing-09-03/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/listing-09-03/src/main.rs b/listings/ch09-error-handling/listing-09-03/src/main.rs
new file mode 100644
index 00000000..0dfd10b5
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-03/src/main.rs
@@ -0,0 +1,5 @@
+use std::fs::File;
+
+fn main() {
+    let f = File::open("hello.txt");
+}
diff --git a/listings/ch09-error-handling/listing-09-04/Cargo.lock b/listings/ch09-error-handling/listing-09-04/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/listing-09-04/Cargo.toml b/listings/ch09-error-handling/listing-09-04/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/listing-09-04/output.txt b/listings/ch09-error-handling/listing-09-04/output.txt
new file mode 100644
index 00000000..5bf2a522
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-04/output.txt
@@ -0,0 +1,6 @@
+$ cargo run
+   Compiling error-handling v0.1.0 (file:///projects/error-handling)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.73s
+     Running `target/debug/error-handling`
+thread 'main' panicked at 'Problem opening the file: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/main.rs:9:13
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
diff --git a/listings/ch09-error-handling/listing-09-04/src/main.rs b/listings/ch09-error-handling/listing-09-04/src/main.rs
new file mode 100644
index 00000000..65973a45
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-04/src/main.rs
@@ -0,0 +1,12 @@
+use std::fs::File;
+
+fn main() {
+    let f = File::open("hello.txt");
+
+    let f = match f {
+        Ok(file) => file,
+        Err(error) => {
+            panic!("Problem opening the file: {:?}", error)
+        },
+    };
+}
diff --git a/listings/ch09-error-handling/listing-09-05/Cargo.lock b/listings/ch09-error-handling/listing-09-05/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/listing-09-05/Cargo.toml b/listings/ch09-error-handling/listing-09-05/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/listing-09-05/src/main.rs b/listings/ch09-error-handling/listing-09-05/src/main.rs
new file mode 100644
index 00000000..d53952e3
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-05/src/main.rs
@@ -0,0 +1,17 @@
+use std::fs::File;
+use std::io::ErrorKind;
+
+fn main() {
+    let f = File::open("hello.txt");
+
+    let f = match f {
+        Ok(file) => file,
+        Err(error) => match error.kind() {
+            ErrorKind::NotFound => match File::create("hello.txt") {
+                Ok(fc) => fc,
+                Err(e) => panic!("Problem creating the file: {:?}", e),
+            },
+            other_error => panic!("Problem opening the file: {:?}", other_error),
+        },
+    };
+}
diff --git a/listings/ch09-error-handling/listing-09-06/Cargo.lock b/listings/ch09-error-handling/listing-09-06/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/listing-09-06/Cargo.toml b/listings/ch09-error-handling/listing-09-06/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/listing-09-06/src/main.rs b/listings/ch09-error-handling/listing-09-06/src/main.rs
new file mode 100644
index 00000000..65b6156f
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-06/src/main.rs
@@ -0,0 +1,25 @@
+// ANCHOR: here
+use std::io;
+use std::io::Read;
+use std::fs::File;
+
+fn read_username_from_file() -> Result<String, io::Error> {
+    let f = File::open("hello.txt");
+
+    let mut f = match f {
+        Ok(file) => file,
+        Err(e) => return Err(e),
+    };
+
+    let mut s = String::new();
+
+    match f.read_to_string(&mut s) {
+        Ok(_) => Ok(s),
+        Err(e) => Err(e),
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let username = read_username_from_file().expect("Unable to get username");
+}
diff --git a/listings/ch09-error-handling/listing-09-07/Cargo.lock b/listings/ch09-error-handling/listing-09-07/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/listing-09-07/Cargo.toml b/listings/ch09-error-handling/listing-09-07/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/listing-09-07/src/main.rs b/listings/ch09-error-handling/listing-09-07/src/main.rs
new file mode 100644
index 00000000..2fb154e3
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-07/src/main.rs
@@ -0,0 +1,16 @@
+// ANCHOR: here
+use std::io;
+use std::io::Read;
+use std::fs::File;
+
+fn read_username_from_file() -> Result<String, io::Error> {
+    let mut f = File::open("hello.txt")?;
+    let mut s = String::new();
+    f.read_to_string(&mut s)?;
+    Ok(s)
+}
+// ANCHOR_END: here
+
+fn main() {
+    let username = read_username_from_file().expect("Unable to get username");
+}
diff --git a/listings/ch09-error-handling/listing-09-08/Cargo.lock b/listings/ch09-error-handling/listing-09-08/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/listing-09-08/Cargo.toml b/listings/ch09-error-handling/listing-09-08/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/listing-09-08/src/main.rs b/listings/ch09-error-handling/listing-09-08/src/main.rs
new file mode 100644
index 00000000..930a8bf0
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-08/src/main.rs
@@ -0,0 +1,17 @@
+// ANCHOR: here
+use std::io;
+use std::io::Read;
+use std::fs::File;
+
+fn read_username_from_file() -> Result<String, io::Error> {
+    let mut s = String::new();
+
+    File::open("hello.txt")?.read_to_string(&mut s)?;
+
+    Ok(s)
+}
+// ANCHOR_END: here
+
+fn main() {
+    let username = read_username_from_file().expect("Unable to get username");
+}
diff --git a/listings/ch09-error-handling/listing-09-09/Cargo.lock b/listings/ch09-error-handling/listing-09-09/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/listing-09-09/Cargo.toml b/listings/ch09-error-handling/listing-09-09/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/listing-09-09/src/main.rs b/listings/ch09-error-handling/listing-09-09/src/main.rs
new file mode 100644
index 00000000..f8a213bc
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-09/src/main.rs
@@ -0,0 +1,12 @@
+// ANCHOR: here
+use std::io;
+use std::fs;
+
+fn read_username_from_file() -> Result<String, io::Error> {
+    fs::read_to_string("hello.txt")
+}
+// ANCHOR_END: here
+
+fn main() {
+    let username = read_username_from_file().expect("Unable to get username");
+}
diff --git a/listings/ch09-error-handling/listing-09-10/Cargo.lock b/listings/ch09-error-handling/listing-09-10/Cargo.lock
new file mode 100644
index 00000000..2e0b103b
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-10/Cargo.lock
@@ -0,0 +1,89 @@
+[[package]]
+name = "fuchsia-cprng"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+dependencies = [
+ "rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.53"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "rand"
+version = "0.3.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "rdrand"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[metadata]
+"checksum fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
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+"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/listings/ch09-error-handling/listing-09-10/Cargo.toml b/listings/ch09-error-handling/listing-09-10/Cargo.toml
new file mode 100644
index 00000000..ad5ca696
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-10/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch09-error-handling/listing-09-10/src/main.rs b/listings/ch09-error-handling/listing-09-10/src/main.rs
new file mode 100644
index 00000000..be30ed72
--- /dev/null
+++ b/listings/ch09-error-handling/listing-09-10/src/main.rs
@@ -0,0 +1,56 @@
+use std::io;
+use std::cmp::Ordering;
+use rand::Rng;
+
+// ANCHOR: here
+pub struct Guess {
+    value: i32,
+}
+
+impl Guess {
+    pub fn new(value: i32) -> Guess {
+        if value < 1 || value > 100 {
+            panic!("Guess value must be between 1 and 100, got {}.", value);
+        }
+
+        Guess {
+            value
+        }
+    }
+
+    pub fn value(&self) -> i32 {
+        self.value
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    println!("Guess the number!");
+
+    let secret_number = rand::thread_rng().gen_range(1, 101);
+
+    loop {
+        println!("Please input your guess.");
+
+        let mut guess = String::new();
+
+        io::stdin().read_line(&mut guess)
+            .expect("Failed to read line");
+
+        let guess: i32 = match guess.trim().parse() {
+            Ok(num) => num,
+            Err(_) => continue,
+        };
+
+        let guess = Guess::new(guess);
+
+        match guess.value().cmp(&secret_number) {
+            Ordering::Less => println!("Too small!"),
+            Ordering::Greater => println!("Too big!"),
+            Ordering::Equal => {
+                println!("You win!");
+                break;
+            }
+        }
+    }
+}
diff --git a/listings/ch09-error-handling/no-listing-01-panic/Cargo.lock b/listings/ch09-error-handling/no-listing-01-panic/Cargo.lock
new file mode 100644
index 00000000..c6c01a5d
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-01-panic/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "panic"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/no-listing-01-panic/Cargo.toml b/listings/ch09-error-handling/no-listing-01-panic/Cargo.toml
new file mode 100644
index 00000000..310342cd
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-01-panic/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "panic"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/no-listing-01-panic/output.txt b/listings/ch09-error-handling/no-listing-01-panic/output.txt
new file mode 100644
index 00000000..1bc3dc72
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-01-panic/output.txt
@@ -0,0 +1,6 @@
+$ cargo run
+   Compiling panic v0.1.0 (file:///projects/panic)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.25s
+     Running `target/debug/panic`
+thread 'main' panicked at 'crash and burn', src/main.rs:2:5
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
diff --git a/listings/ch09-error-handling/no-listing-01-panic/src/main.rs b/listings/ch09-error-handling/no-listing-01-panic/src/main.rs
new file mode 100644
index 00000000..32a4c243
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-01-panic/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    panic!("crash and burn");
+}
diff --git a/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/Cargo.lock b/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/Cargo.toml b/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/output.txt b/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/output.txt
new file mode 100644
index 00000000..1d661eb2
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/output.txt
@@ -0,0 +1,17 @@
+$ cargo run
+   Compiling error-handling v0.1.0 (file:///projects/error-handling)
+error[E0308]: mismatched types
+ --> src/main.rs:4:18
+  |
+4 |     let f: u32 = File::open("hello.txt");
+  |                  ^^^^^^^^^^^^^^^^^^^^^^^ expected u32, found enum `std::result::Result`
+  |
+  = note: expected type `u32`
+             found type `std::result::Result<std::fs::File, std::io::Error>`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
+error: Could not compile `error-handling`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/src/main.rs b/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/src/main.rs
new file mode 100644
index 00000000..a637f5f9
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/src/main.rs
@@ -0,0 +1,7 @@
+use std::fs::File;
+
+fn main() {
+    // ANCHOR: here
+    let f: u32 = File::open("hello.txt");
+    // ANCHOR_END: here
+}
diff --git a/listings/ch09-error-handling/no-listing-03-closures/Cargo.lock b/listings/ch09-error-handling/no-listing-03-closures/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-03-closures/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/no-listing-03-closures/Cargo.toml b/listings/ch09-error-handling/no-listing-03-closures/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-03-closures/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/no-listing-03-closures/src/main.rs b/listings/ch09-error-handling/no-listing-03-closures/src/main.rs
new file mode 100644
index 00000000..c6682cd2
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-03-closures/src/main.rs
@@ -0,0 +1,14 @@
+use std::fs::File;
+use std::io::ErrorKind;
+
+fn main() {
+    let f = File::open("hello.txt").unwrap_or_else(|error| {
+        if error.kind() == ErrorKind::NotFound {
+            File::create("hello.txt").unwrap_or_else(|error| {
+                panic!("Problem creating the file: {:?}", error);
+            })
+        } else {
+            panic!("Problem opening the file: {:?}", error);
+        }
+    });
+}
diff --git a/listings/ch09-error-handling/no-listing-04-unwrap/Cargo.lock b/listings/ch09-error-handling/no-listing-04-unwrap/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-04-unwrap/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/no-listing-04-unwrap/Cargo.toml b/listings/ch09-error-handling/no-listing-04-unwrap/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-04-unwrap/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/no-listing-04-unwrap/src/main.rs b/listings/ch09-error-handling/no-listing-04-unwrap/src/main.rs
new file mode 100644
index 00000000..7b6b13ae
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-04-unwrap/src/main.rs
@@ -0,0 +1,5 @@
+use std::fs::File;
+
+fn main() {
+    let f = File::open("hello.txt").unwrap();
+}
diff --git a/listings/ch09-error-handling/no-listing-05-expect/Cargo.lock b/listings/ch09-error-handling/no-listing-05-expect/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-05-expect/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/no-listing-05-expect/Cargo.toml b/listings/ch09-error-handling/no-listing-05-expect/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-05-expect/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/no-listing-05-expect/src/main.rs b/listings/ch09-error-handling/no-listing-05-expect/src/main.rs
new file mode 100644
index 00000000..cab643bc
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-05-expect/src/main.rs
@@ -0,0 +1,5 @@
+use std::fs::File;
+
+fn main() {
+    let f = File::open("hello.txt").expect("Failed to open hello.txt");
+}
diff --git a/listings/ch09-error-handling/no-listing-06-question-mark-in-main/Cargo.lock b/listings/ch09-error-handling/no-listing-06-question-mark-in-main/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-06-question-mark-in-main/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/no-listing-06-question-mark-in-main/Cargo.toml b/listings/ch09-error-handling/no-listing-06-question-mark-in-main/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-06-question-mark-in-main/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/no-listing-06-question-mark-in-main/output.txt b/listings/ch09-error-handling/no-listing-06-question-mark-in-main/output.txt
new file mode 100644
index 00000000..1b41e79e
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-06-question-mark-in-main/output.txt
@@ -0,0 +1,17 @@
+$ cargo run
+   Compiling error-handling v0.1.0 (file:///projects/error-handling)
+error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
+ --> src/main.rs:4:13
+  |
+4 |     let f = File::open("hello.txt")?;
+  |             ^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
+  |
+  = help: the trait `std::ops::Try` is not implemented for `()`
+  = note: required by `std::ops::Try::from_error`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
+error: Could not compile `error-handling`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch09-error-handling/no-listing-06-question-mark-in-main/src/main.rs b/listings/ch09-error-handling/no-listing-06-question-mark-in-main/src/main.rs
new file mode 100644
index 00000000..8608dc13
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-06-question-mark-in-main/src/main.rs
@@ -0,0 +1,5 @@
+use std::fs::File;
+
+fn main() {
+    let f = File::open("hello.txt")?;
+}
diff --git a/listings/ch09-error-handling/no-listing-07-main-returning-result/Cargo.lock b/listings/ch09-error-handling/no-listing-07-main-returning-result/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-07-main-returning-result/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/no-listing-07-main-returning-result/Cargo.toml b/listings/ch09-error-handling/no-listing-07-main-returning-result/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-07-main-returning-result/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/no-listing-07-main-returning-result/src/main.rs b/listings/ch09-error-handling/no-listing-07-main-returning-result/src/main.rs
new file mode 100644
index 00000000..7f16b8e9
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-07-main-returning-result/src/main.rs
@@ -0,0 +1,8 @@
+use std::error::Error;
+use std::fs::File;
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let f = File::open("hello.txt")?;
+
+    Ok(())
+}
diff --git a/listings/ch09-error-handling/no-listing-08-unwrap-that-cant-fail/Cargo.lock b/listings/ch09-error-handling/no-listing-08-unwrap-that-cant-fail/Cargo.lock
new file mode 100644
index 00000000..47037886
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-08-unwrap-that-cant-fail/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "error-handling"
+version = "0.1.0"
+
diff --git a/listings/ch09-error-handling/no-listing-08-unwrap-that-cant-fail/Cargo.toml b/listings/ch09-error-handling/no-listing-08-unwrap-that-cant-fail/Cargo.toml
new file mode 100644
index 00000000..2a48daef
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-08-unwrap-that-cant-fail/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "error-handling"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch09-error-handling/no-listing-08-unwrap-that-cant-fail/src/main.rs b/listings/ch09-error-handling/no-listing-08-unwrap-that-cant-fail/src/main.rs
new file mode 100644
index 00000000..e829724c
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-08-unwrap-that-cant-fail/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    // ANCHOR: here
+    use std::net::IpAddr;
+
+    let home: IpAddr = "127.0.0.1".parse().unwrap();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.lock b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.lock
new file mode 100644
index 00000000..2e0b103b
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.lock
@@ -0,0 +1,89 @@
+[[package]]
+name = "fuchsia-cprng"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+dependencies = [
+ "rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.53"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "rand"
+version = "0.3.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "rdrand"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[metadata]
+"checksum fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
+"checksum libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)" = "ec350a9417dfd244dc9a6c4a71e13895a4db6b92f0b106f07ebbc3f3bc580cee"
+"checksum rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)" = "64ac302d8f83c0c1974bf758f6b041c6c8ada916fbb44a609158ca8b064cc76c"
+"checksum rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "552840b97013b1a26992c11eac34bdd778e464601a4c2054b5f0bff7c6761293"
+"checksum rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
+"checksum rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d0e7a549d590831370895ab7ba4ea0c1b6b011d106b5ff2da6eee112615e6dc0"
+"checksum rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "678054eb77286b51581ba43620cc911abf02758c91f93f479767aed0f90458b2"
+"checksum winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "f10e386af2b13e47c89e7236a7a14a086791a2b88ebad6df9bf42040195cf770"
+"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.toml b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.toml
new file mode 100644
index 00000000..ad5ca696
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch09-error-handling/no-listing-09-guess-out-of-range/src/main.rs b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/src/main.rs
new file mode 100644
index 00000000..0fdd8460
--- /dev/null
+++ b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/src/main.rs
@@ -0,0 +1,46 @@
+use std::io;
+use std::cmp::Ordering;
+use rand::Rng;
+
+fn main() {
+    println!("Guess the number!");
+
+    let secret_number = rand::thread_rng().gen_range(1, 101);
+
+    // ANCHOR: here
+    loop {
+        // --snip--
+
+        // ANCHOR_END: here
+        println!("Please input your guess.");
+
+        let mut guess = String::new();
+
+        io::stdin().read_line(&mut guess)
+            .expect("Failed to read line");
+
+        // ANCHOR: here
+        let guess: i32 = match guess.trim().parse() {
+            Ok(num) => num,
+            Err(_) => continue,
+        };
+
+        if guess < 1 || guess > 100 {
+            println!("The secret number will be between 1 and 100.");
+            continue;
+        }
+
+        match guess.cmp(&secret_number) {
+        // --snip--
+        // ANCHOR_END: here
+            Ordering::Less => println!("Too small!"),
+            Ordering::Greater => println!("Too big!"),
+            Ordering::Equal => {
+                println!("You win!");
+                break;
+            }
+        }
+        // ANCHOR: here
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/src/main.rs
new file mode 100644
index 00000000..d2ba23b4
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/src/main.rs
@@ -0,0 +1,18 @@
+// ANCHOR: here
+fn main() {
+    let number_list = vec![34, 50, 25, 100, 65];
+
+    let mut largest = number_list[0];
+
+    for number in number_list {
+        if number > largest {
+            largest = number;
+        }
+    }
+
+    println!("The largest number is {}", largest);
+    // ANCHOR_END: here
+    assert_eq!(largest, 100);
+    // ANCHOR: here
+}
+// ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/src/main.rs
new file mode 100644
index 00000000..9138dfcb
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/src/main.rs
@@ -0,0 +1,25 @@
+fn main() {
+    let number_list = vec![34, 50, 25, 100, 65];
+
+    let mut largest = number_list[0];
+
+    for number in number_list {
+        if number > largest {
+            largest = number;
+        }
+    }
+
+    println!("The largest number is {}", largest);
+
+    let number_list = vec![102, 34, 6000, 89, 54, 2, 43, 8];
+
+    let mut largest = number_list[0];
+
+    for number in number_list {
+        if number > largest {
+            largest = number;
+        }
+    }
+
+    println!("The largest number is {}", largest);
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/src/main.rs
new file mode 100644
index 00000000..7704ff33
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/src/main.rs
@@ -0,0 +1,31 @@
+// ANCHOR: here
+fn largest(list: &[i32]) -> i32 {
+    let mut largest = list[0];
+
+    for &item in list {
+        if item > largest {
+            largest = item;
+        }
+    }
+
+    largest
+}
+
+fn main() {
+    let number_list = vec![34, 50, 25, 100, 65];
+
+    let result = largest(&number_list);
+    println!("The largest number is {}", result);
+    // ANCHOR_END: here
+    assert_eq!(result, 100);
+    // ANCHOR: here
+
+    let number_list = vec![102, 34, 6000, 89, 54, 2, 43, 8];
+
+    let result = largest(&number_list);
+    println!("The largest number is {}", result);
+    // ANCHOR_END: here
+    assert_eq!(result, 6000);
+    // ANCHOR: here
+}
+// ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/src/main.rs
new file mode 100644
index 00000000..a7c0b6d6
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/src/main.rs
@@ -0,0 +1,43 @@
+// ANCHOR: here
+fn largest_i32(list: &[i32]) -> i32 {
+    let mut largest = list[0];
+
+    for &item in list.iter() {
+        if item > largest {
+            largest = item;
+        }
+    }
+
+    largest
+}
+
+fn largest_char(list: &[char]) -> char {
+    let mut largest = list[0];
+
+    for &item in list.iter() {
+        if item > largest {
+            largest = item;
+        }
+    }
+
+    largest
+}
+
+fn main() {
+    let number_list = vec![34, 50, 25, 100, 65];
+
+    let result = largest_i32(&number_list);
+    println!("The largest number is {}", result);
+    // ANCHOR_END: here
+    assert_eq!(result, 100);
+    // ANCHOR: here
+
+    let char_list = vec!['y', 'm', 'a', 'q'];
+
+    let result = largest_char(&char_list);
+    println!("The largest char is {}", result);
+    // ANCHOR_END: here
+    assert_eq!(result, 'y');
+    // ANCHOR: here
+}
+// ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/output.txt b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/output.txt
new file mode 100644
index 00000000..972e40c8
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/output.txt
@@ -0,0 +1,18 @@
+$ cargo run
+   Compiling chapter10 v0.1.0 (file:///projects/chapter10)
+error[E0369]: binary operation `>` cannot be applied to type `T`
+ --> src/main.rs:5:17
+  |
+5 |         if item > largest {
+  |            ---- ^ ------- T
+  |            |
+  |            T
+  |
+  = note: `T` might need a bound for `std::cmp::PartialOrd`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0369`.
+error: Could not compile `chapter10`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/src/main.rs
new file mode 100644
index 00000000..1ee316bd
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/src/main.rs
@@ -0,0 +1,23 @@
+fn largest<T>(list: &[T]) -> T {
+    let mut largest = list[0];
+
+    for &item in list.iter() {
+        if item > largest {
+            largest = item;
+        }
+    }
+
+    largest
+}
+
+fn main() {
+    let number_list = vec![34, 50, 25, 100, 65];
+
+    let result = largest(&number_list);
+    println!("The largest number is {}", result);
+
+    let char_list = vec!['y', 'm', 'a', 'q'];
+
+    let result = largest(&char_list);
+    println!("The largest char is {}", result);
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-06/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-06/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-06/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-06/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-06/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-06/src/main.rs
new file mode 100644
index 00000000..4252593d
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-06/src/main.rs
@@ -0,0 +1,9 @@
+struct Point<T> {
+    x: T,
+    y: T,
+}
+
+fn main() {
+    let integer = Point { x: 5, y: 10 };
+    let float = Point { x: 1.0, y: 4.0 };
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/output.txt b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/output.txt
new file mode 100644
index 00000000..9a143a8d
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/output.txt
@@ -0,0 +1,17 @@
+$ cargo run
+   Compiling chapter10 v0.1.0 (file:///projects/chapter10)
+error[E0308]: mismatched types
+ --> src/main.rs:7:38
+  |
+7 |     let wont_work = Point { x: 5, y: 4.0 };
+  |                                      ^^^ expected integer, found floating-point number
+  |
+  = note: expected type `{integer}`
+             found type `{float}`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
+error: Could not compile `chapter10`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/src/main.rs
new file mode 100644
index 00000000..7883db1a
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/src/main.rs
@@ -0,0 +1,8 @@
+struct Point<T> {
+    x: T,
+    y: T,
+}
+
+fn main() {
+    let wont_work = Point { x: 5, y: 4.0 };
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-08/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-08/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-08/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-08/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-08/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-08/src/main.rs
new file mode 100644
index 00000000..615b78cf
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-08/src/main.rs
@@ -0,0 +1,10 @@
+struct Point<T, U> {
+    x: T,
+    y: U,
+}
+
+fn main() {
+    let both_integer = Point { x: 5, y: 10 };
+    let both_float = Point { x: 1.0, y: 4.0 };
+    let integer_and_float = Point { x: 5, y: 4.0 };
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-09/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-09/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-09/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-09/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-09/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-09/src/main.rs
new file mode 100644
index 00000000..288b64ea
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-09/src/main.rs
@@ -0,0 +1,16 @@
+struct Point<T> {
+    x: T,
+    y: T,
+}
+
+impl<T> Point<T> {
+    fn x(&self) -> &T {
+        &self.x
+    }
+}
+
+fn main() {
+    let p = Point { x: 5, y: 10 };
+
+    println!("p.x = {}", p.x());
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/src/main.rs
new file mode 100644
index 00000000..4c5b01bd
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/src/main.rs
@@ -0,0 +1,24 @@
+struct Point<T> {
+    x: T,
+    y: T,
+}
+
+impl<T> Point<T> {
+    fn x(&self) -> &T {
+        &self.x
+    }
+}
+
+// ANCHOR: here
+impl Point<f32> {
+    fn distance_from_origin(&self) -> f32 {
+        (self.x.powi(2) + self.y.powi(2)).sqrt()
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let p = Point { x: 5, y: 10 };
+
+    println!("p.x = {}", p.x());
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-11/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-11/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-11/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-11/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-11/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-11/src/main.rs
new file mode 100644
index 00000000..622d39b2
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-11/src/main.rs
@@ -0,0 +1,22 @@
+struct Point<T, U> {
+    x: T,
+    y: U,
+}
+
+impl<T, U> Point<T, U> {
+    fn mixup<V, W>(self, other: Point<V, W>) -> Point<T, W> {
+        Point {
+            x: self.x,
+            y: other.y,
+        }
+    }
+}
+
+fn main() {
+    let p1 = Point { x: 5, y: 10.4 };
+    let p2 = Point { x: "Hello", y: 'c'};
+
+    let p3 = p1.mixup(p2);
+
+    println!("p3.x = {}, p3.y = {}", p3.x, p3.y);
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-12/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-12/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-12/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-12/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-12/src/lib.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-12/src/lib.rs
new file mode 100644
index 00000000..cfaedb02
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-12/src/lib.rs
@@ -0,0 +1,3 @@
+pub trait Summary {
+    fn summarize(&self) -> String;
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-13/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-13/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-13/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-13/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-13/src/lib.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-13/src/lib.rs
new file mode 100644
index 00000000..c4c83329
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-13/src/lib.rs
@@ -0,0 +1,31 @@
+pub trait Summary {
+    fn summarize(&self) -> String;
+}
+
+// ANCHOR: here
+pub struct NewsArticle {
+    pub headline: String,
+    pub location: String,
+    pub author: String,
+    pub content: String,
+}
+
+impl Summary for NewsArticle {
+    fn summarize(&self) -> String {
+        format!("{}, by {} ({})", self.headline, self.author, self.location)
+    }
+}
+
+pub struct Tweet {
+    pub username: String,
+    pub content: String,
+    pub reply: bool,
+    pub retweet: bool,
+}
+
+impl Summary for Tweet {
+    fn summarize(&self) -> String {
+        format!("{}: {}", self.username, self.content)
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-14/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-14/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-14/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-14/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-14/src/lib.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-14/src/lib.rs
new file mode 100644
index 00000000..fb59b84f
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-14/src/lib.rs
@@ -0,0 +1,29 @@
+// ANCHOR: here
+pub trait Summary {
+    fn summarize(&self) -> String {
+        String::from("(Read more...)")
+    }
+}
+// ANCHOR_END: here
+
+pub struct NewsArticle {
+    pub headline: String,
+    pub location: String,
+    pub author: String,
+    pub content: String,
+}
+
+impl Summary for NewsArticle {}
+
+pub struct Tweet {
+    pub username: String,
+    pub content: String,
+    pub reply: bool,
+    pub retweet: bool,
+}
+
+impl Summary for Tweet {
+    fn summarize(&self) -> String {
+        format!("{}: {}", self.username, self.content)
+    }
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-15/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-15/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-15/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-15/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-15/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-15/src/main.rs
new file mode 100644
index 00000000..755f991c
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-15/src/main.rs
@@ -0,0 +1,23 @@
+fn largest<T: PartialOrd + Copy>(list: &[T]) -> T {
+    let mut largest = list[0];
+
+    for &item in list.iter() {
+        if item > largest {
+            largest = item;
+        }
+    }
+
+    largest
+}
+
+fn main() {
+    let number_list = vec![34, 50, 25, 100, 65];
+
+    let result = largest(&number_list);
+    println!("The largest number is {}", result);
+
+    let char_list = vec!['y', 'm', 'a', 'q'];
+
+    let result = largest(&char_list);
+    println!("The largest char is {}", result);
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/src/lib.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/src/lib.rs
new file mode 100644
index 00000000..6009860d
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/src/lib.rs
@@ -0,0 +1,25 @@
+use std::fmt::Display;
+
+struct Pair<T> {
+    x: T,
+    y: T,
+}
+
+impl<T> Pair<T> {
+    fn new(x: T, y: T) -> Self {
+        Self {
+            x,
+            y,
+        }
+    }
+}
+
+impl<T: Display + PartialOrd> Pair<T> {
+    fn cmp_display(&self) {
+        if self.x >= self.y {
+            println!("The largest member is x = {}", self.x);
+        } else {
+            println!("The largest member is y = {}", self.y);
+        }
+    }
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/output.txt b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/output.txt
new file mode 100644
index 00000000..1cf2f459
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/output.txt
@@ -0,0 +1,19 @@
+$ cargo run
+   Compiling chapter10 v0.1.0 (file:///projects/chapter10)
+error[E0597]: `x` does not live long enough
+  --> src/main.rs:7:13
+   |
+7  |             r = &x;
+   |             ^^^^^^ borrowed value does not live long enough
+8  |         }
+   |         - `x` dropped here while still borrowed
+9  | 
+10 |         println!("r: {}", r);
+   |                           - borrow later used here
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0597`.
+error: Could not compile `chapter10`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/src/main.rs
new file mode 100644
index 00000000..16adb6a0
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/src/main.rs
@@ -0,0 +1,14 @@
+fn main() {
+    // ANCHOR: here
+    {
+        let r;
+
+        {
+            let x = 5;
+            r = &x;
+        }
+
+        println!("r: {}", r);
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/src/main.rs
new file mode 100644
index 00000000..65dbf375
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/src/main.rs
@@ -0,0 +1,14 @@
+fn main() {
+    // ANCHOR: here
+    {
+        let r;                // ---------+-- 'a
+                              //          |
+        {                     //          |
+            let x = 5;        // -+-- 'b  |
+            r = &x;           //  |       |
+        }                     // -+       |
+                              //          |
+        println!("r: {}", r); //          |
+    }                         // ---------+
+    // ANCHOR_END: here
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/src/main.rs
new file mode 100644
index 00000000..94e70f00
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    // ANCHOR: here
+    {
+        let x = 5;            // ----------+-- 'b
+                              //           |
+        let r = &x;           // --+-- 'a  |
+                              //   |       |
+        println!("r: {}", r); //   |       |
+                              // --+       |
+    }                         // ----------+
+    // ANCHOR_END: here
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/src/main.rs
new file mode 100644
index 00000000..0f076a71
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    let string1 = String::from("abcd");
+    let string2 = "xyz";
+
+    let result = longest(string1.as_str(), string2);
+    println!("The longest string is {}", result);
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/output.txt b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/output.txt
new file mode 100644
index 00000000..bef87a3a
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/output.txt
@@ -0,0 +1,16 @@
+$ cargo run
+   Compiling chapter10 v0.1.0 (file:///projects/chapter10)
+error[E0106]: missing lifetime specifier
+ --> src/main.rs:9:33
+  |
+9 | fn longest(x: &str, y: &str) -> &str {
+  |                                 ^ expected lifetime parameter
+  |
+  = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from `x` or `y`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0106`.
+error: Could not compile `chapter10`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/src/main.rs
new file mode 100644
index 00000000..6af8c9f0
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/src/main.rs
@@ -0,0 +1,17 @@
+fn main() {
+    let string1 = String::from("abcd");
+    let string2 = "xyz";
+
+    let result = longest(string1.as_str(), string2);
+    println!("The longest string is {}", result);
+}
+
+// ANCHOR: here
+fn longest(x: &str, y: &str) -> &str {
+    if x.len() > y.len() {
+        x
+    } else {
+        y
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/src/main.rs
new file mode 100644
index 00000000..09c3a0da
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/src/main.rs
@@ -0,0 +1,17 @@
+fn main() {
+    let string1 = String::from("abcd");
+    let string2 = "xyz";
+
+    let result = longest(string1.as_str(), string2);
+    println!("The longest string is {}", result);
+}
+
+// ANCHOR: here
+fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
+    if x.len() > y.len() {
+        x
+    } else {
+        y
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/src/main.rs
new file mode 100644
index 00000000..836ec729
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/src/main.rs
@@ -0,0 +1,19 @@
+// ANCHOR: here
+fn main() {
+    let string1 = String::from("long string is long");
+
+    {
+        let string2 = String::from("xyz");
+        let result = longest(string1.as_str(), string2.as_str());
+        println!("The longest string is {}", result);
+    }
+}
+// ANCHOR_END: here
+
+fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
+    if x.len() > y.len() {
+        x
+    } else {
+        y
+    }
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/output.txt b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/output.txt
new file mode 100644
index 00000000..135923e3
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/output.txt
@@ -0,0 +1,18 @@
+$ cargo run
+   Compiling chapter10 v0.1.0 (file:///projects/chapter10)
+error[E0597]: `string2` does not live long enough
+ --> src/main.rs:6:44
+  |
+6 |         result = longest(string1.as_str(), string2.as_str());
+  |                                            ^^^^^^^ borrowed value does not live long enough
+7 |     }
+  |     - `string2` dropped here while still borrowed
+8 |     println!("The longest string is {}", result);
+  |                                          ------ borrow later used here
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0597`.
+error: Could not compile `chapter10`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/src/main.rs
new file mode 100644
index 00000000..2a6fa589
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/src/main.rs
@@ -0,0 +1,19 @@
+// ANCHOR: here
+fn main() {
+    let string1 = String::from("long string is long");
+    let result;
+    {
+        let string2 = String::from("xyz");
+        result = longest(string1.as_str(), string2.as_str());
+    }
+    println!("The longest string is {}", result);
+}
+// ANCHOR_END: here
+
+fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
+    if x.len() > y.len() {
+        x
+    } else {
+        y
+    }
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-25/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-25/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-25/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-25/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-25/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-25/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-25/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-25/src/main.rs
new file mode 100644
index 00000000..7d138708
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-25/src/main.rs
@@ -0,0 +1,11 @@
+struct ImportantExcerpt<'a> {
+    part: &'a str,
+}
+
+fn main() {
+    let novel = String::from("Call me Ishmael. Some years ago...");
+    let first_sentence = novel.split('.')
+        .next()
+        .expect("Could not find a '.'");
+    let i = ImportantExcerpt { part: first_sentence };
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-26/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-26/Cargo.lock
new file mode 100644
index 00000000..9e4e62dd
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-26/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-26/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-26/Cargo.toml
new file mode 100644
index 00000000..686de938
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-26/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-26/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-26/src/main.rs
new file mode 100644
index 00000000..431a261d
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-26/src/main.rs
@@ -0,0 +1,29 @@
+// ANCHOR: here
+fn first_word(s: &str) -> &str {
+    let bytes = s.as_bytes();
+
+    for (i, &item) in bytes.iter().enumerate() {
+        if item == b' ' {
+            return &s[0..i];
+        }
+    }
+
+    &s[..]
+}
+// ANCHOR_END: here
+
+fn main() {
+    let my_string = String::from("hello world");
+
+    // first_word works on slices of `String`s
+    let word = first_word(&my_string[..]);
+
+    let my_string_literal = "hello world";
+
+    // first_word works on slices of string literals
+    let word = first_word(&my_string_literal[..]);
+
+    // Because string literals *are* string slices already,
+    // this works too, without the slice syntax!
+    let word = first_word(my_string_literal);
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/lib.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/lib.rs
new file mode 100644
index 00000000..fa644ca4
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/lib.rs
@@ -0,0 +1,29 @@
+pub trait Summary {
+    fn summarize(&self) -> String;
+}
+
+pub struct NewsArticle {
+    pub headline: String,
+    pub location: String,
+    pub author: String,
+    pub content: String,
+}
+
+impl Summary for NewsArticle {
+    fn summarize(&self) -> String {
+        format!("{}, by {} ({})", self.headline, self.author, self.location)
+    }
+}
+
+pub struct Tweet {
+    pub username: String,
+    pub content: String,
+    pub reply: bool,
+    pub retweet: bool,
+}
+
+impl Summary for Tweet {
+    fn summarize(&self) -> String {
+        format!("{}: {}", self.username, self.content)
+    }
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/main.rs
new file mode 100644
index 00000000..94fb22c6
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/main.rs
@@ -0,0 +1,14 @@
+use chapter10::{self, Tweet, Summary};
+
+fn main() {
+    // ANCHOR: here
+    let tweet = Tweet {
+        username: String::from("horse_ebooks"),
+        content: String::from("of course, as you probably already know, people"),
+        reply: false,
+        retweet: false,
+    };
+
+    println!("1 new tweet: {}", tweet.summarize());
+    // ANCHOR_END: here
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/src/lib.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/src/lib.rs
new file mode 100644
index 00000000..b6f93a68
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/src/lib.rs
@@ -0,0 +1,27 @@
+pub trait Summary {
+    fn summarize(&self) -> String {
+        String::from("(Read more...)")
+    }
+}
+
+pub struct NewsArticle {
+    pub headline: String,
+    pub location: String,
+    pub author: String,
+    pub content: String,
+}
+
+impl Summary for NewsArticle {}
+
+pub struct Tweet {
+    pub username: String,
+    pub content: String,
+    pub reply: bool,
+    pub retweet: bool,
+}
+
+impl Summary for Tweet {
+    fn summarize(&self) -> String {
+        format!("{}: {}", self.username, self.content)
+    }
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/src/main.rs
new file mode 100644
index 00000000..de599f68
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/src/main.rs
@@ -0,0 +1,15 @@
+use chapter10::{self, NewsArticle, Summary};
+
+fn main() {
+    // ANCHOR: here
+    let article = NewsArticle {
+        headline: String::from("Penguins win the Stanley Cup Championship!"),
+        location: String::from("Pittsburgh, PA, USA"),
+        author: String::from("Iceburgh"),
+        content: String::from("The Pittsburgh Penguins once again are the best
+        hockey team in the NHL."),
+    };
+
+    println!("New article available! {}", article.summarize());
+    // ANCHOR_END: here
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/lib.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/lib.rs
new file mode 100644
index 00000000..643906f6
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/lib.rs
@@ -0,0 +1,24 @@
+// ANCHOR: here
+pub trait Summary {
+    fn summarize_author(&self) -> String;
+
+    fn summarize(&self) -> String {
+        format!("(Read more from {}...)", self.summarize_author())
+    }
+}
+// ANCHOR_END: here
+
+pub struct Tweet {
+    pub username: String,
+    pub content: String,
+    pub reply: bool,
+    pub retweet: bool,
+}
+
+// ANCHOR: impl
+impl Summary for Tweet {
+    fn summarize_author(&self) -> String {
+        format!("@{}", self.username)
+    }
+}
+// ANCHOR_END: impl
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/main.rs
new file mode 100644
index 00000000..94fb22c6
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/main.rs
@@ -0,0 +1,14 @@
+use chapter10::{self, Tweet, Summary};
+
+fn main() {
+    // ANCHOR: here
+    let tweet = Tweet {
+        username: String::from("horse_ebooks"),
+        content: String::from("of course, as you probably already know, people"),
+        reply: false,
+        retweet: false,
+    };
+
+    println!("1 new tweet: {}", tweet.summarize());
+    // ANCHOR_END: here
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-04-traits-as-parameters/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-04-traits-as-parameters/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-04-traits-as-parameters/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-04-traits-as-parameters/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-04-traits-as-parameters/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-04-traits-as-parameters/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-04-traits-as-parameters/src/lib.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-04-traits-as-parameters/src/lib.rs
new file mode 100644
index 00000000..95038433
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-04-traits-as-parameters/src/lib.rs
@@ -0,0 +1,35 @@
+pub trait Summary {
+    fn summarize(&self) -> String;
+}
+
+pub struct NewsArticle {
+    pub headline: String,
+    pub location: String,
+    pub author: String,
+    pub content: String,
+}
+
+impl Summary for NewsArticle {
+    fn summarize(&self) -> String {
+        format!("{}, by {} ({})", self.headline, self.author, self.location)
+    }
+}
+
+pub struct Tweet {
+    pub username: String,
+    pub content: String,
+    pub reply: bool,
+    pub retweet: bool,
+}
+
+impl Summary for Tweet {
+    fn summarize(&self) -> String {
+        format!("{}: {}", self.username, self.content)
+    }
+}
+
+// ANCHOR: here
+pub fn notify(item: impl Summary) {
+    println!("Breaking news! {}", item.summarize());
+}
+// ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-05-returning-impl-trait/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-05-returning-impl-trait/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-05-returning-impl-trait/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-05-returning-impl-trait/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-05-returning-impl-trait/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-05-returning-impl-trait/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-05-returning-impl-trait/src/lib.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-05-returning-impl-trait/src/lib.rs
new file mode 100644
index 00000000..15d602c6
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-05-returning-impl-trait/src/lib.rs
@@ -0,0 +1,40 @@
+pub trait Summary {
+    fn summarize(&self) -> String;
+}
+
+pub struct NewsArticle {
+    pub headline: String,
+    pub location: String,
+    pub author: String,
+    pub content: String,
+}
+
+impl Summary for NewsArticle {
+    fn summarize(&self) -> String {
+        format!("{}, by {} ({})", self.headline, self.author, self.location)
+    }
+}
+
+pub struct Tweet {
+    pub username: String,
+    pub content: String,
+    pub reply: bool,
+    pub retweet: bool,
+}
+
+impl Summary for Tweet {
+    fn summarize(&self) -> String {
+        format!("{}: {}", self.username, self.content)
+    }
+}
+
+// ANCHOR: here
+fn returns_summarizable() -> impl Summary {
+    Tweet {
+        username: String::from("horse_ebooks"),
+        content: String::from("of course, as you probably already know, people"),
+        reply: false,
+        retweet: false,
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-06-impl-trait-returns-one-type/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-06-impl-trait-returns-one-type/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-06-impl-trait-returns-one-type/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-06-impl-trait-returns-one-type/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-06-impl-trait-returns-one-type/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-06-impl-trait-returns-one-type/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-06-impl-trait-returns-one-type/src/lib.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-06-impl-trait-returns-one-type/src/lib.rs
new file mode 100644
index 00000000..c229f949
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-06-impl-trait-returns-one-type/src/lib.rs
@@ -0,0 +1,50 @@
+pub trait Summary {
+    fn summarize(&self) -> String;
+}
+
+pub struct NewsArticle {
+    pub headline: String,
+    pub location: String,
+    pub author: String,
+    pub content: String,
+}
+
+impl Summary for NewsArticle {
+    fn summarize(&self) -> String {
+        format!("{}, by {} ({})", self.headline, self.author, self.location)
+    }
+}
+
+pub struct Tweet {
+    pub username: String,
+    pub content: String,
+    pub reply: bool,
+    pub retweet: bool,
+}
+
+impl Summary for Tweet {
+    fn summarize(&self) -> String {
+        format!("{}: {}", self.username, self.content)
+    }
+}
+
+// ANCHOR: here
+fn returns_summarizable(switch: bool) -> impl Summary {
+    if switch {
+        NewsArticle {
+            headline: String::from("Penguins win the Stanley Cup Championship!"),
+            location: String::from("Pittsburgh, PA, USA"),
+            author: String::from("Iceburgh"),
+            content: String::from("The Pittsburgh Penguins once again are the best
+            hockey team in the NHL."),
+        }
+    } else {
+        Tweet {
+            username: String::from("horse_ebooks"),
+            content: String::from("of course, as you probably already know, people"),
+            reply: false,
+            retweet: false,
+        }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/output.txt b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/output.txt
new file mode 100644
index 00000000..4cd544da
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/output.txt
@@ -0,0 +1,29 @@
+$ cargo run
+   Compiling chapter10 v0.1.0 (file:///projects/chapter10)
+error[E0508]: cannot move out of type `[T]`, a non-copy slice
+ --> src/main.rs:2:23
+  |
+2 |     let mut largest = list[0];
+  |                       ^^^^^^^
+  |                       |
+  |                       cannot move out of here
+  |                       move occurs because `list[_]` has type `T`, which does not implement the `Copy` trait
+  |                       help: consider borrowing here: `&list[0]`
+
+error[E0507]: cannot move out of a shared reference
+ --> src/main.rs:4:18
+  |
+4 |     for &item in list.iter() {
+  |         -----    ^^^^^^^^^^^
+  |         ||
+  |         |data moved here
+  |         |move occurs because `item` has type `T`, which does not implement the `Copy` trait
+  |         help: consider removing the `&`: `item`
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0507, E0508.
+For more information about an error, try `rustc --explain E0507`.
+error: Could not compile `chapter10`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/src/main.rs
new file mode 100644
index 00000000..0310a764
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/src/main.rs
@@ -0,0 +1,25 @@
+// ANCHOR: here
+fn largest<T: PartialOrd>(list: &[T]) -> T {
+    // ANCHOR_END: here
+    let mut largest = list[0];
+
+    for &item in list.iter() {
+        if item > largest {
+            largest = item;
+        }
+    }
+
+    largest
+}
+
+fn main() {
+    let number_list = vec![34, 50, 25, 100, 65];
+
+    let result = largest(&number_list);
+    println!("The largest number is {}", result);
+
+    let char_list = vec!['y', 'm', 'a', 'q'];
+
+    let result = largest(&char_list);
+    println!("The largest char is {}", result);
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/src/main.rs
new file mode 100644
index 00000000..d144305c
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    let string1 = String::from("abcd");
+    let string2 = "efghijklmnopqrstuvwxyz";
+
+    let result = longest(string1.as_str(), string2);
+    println!("The longest string is {}", result);
+}
+
+// ANCHOR: here
+fn longest<'a>(x: &'a str, y: &str) -> &'a str {
+    x
+}
+// ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/output.txt b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/output.txt
new file mode 100644
index 00000000..24fec3ab
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/output.txt
@@ -0,0 +1,17 @@
+$ cargo run
+   Compiling chapter10 v0.1.0 (file:///projects/chapter10)
+error[E0515]: cannot return value referencing local variable `result`
+  --> src/main.rs:11:5
+   |
+11 |     result.as_str()
+   |     ------^^^^^^^^^
+   |     |
+   |     returns a value referencing data owned by the current function
+   |     `result` is borrowed here
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0515`.
+error: Could not compile `chapter10`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/src/main.rs
new file mode 100644
index 00000000..aca4be0a
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/src/main.rs
@@ -0,0 +1,14 @@
+fn main() {
+    let string1 = String::from("abcd");
+    let string2 = "xyz";
+
+    let result = longest(string1.as_str(), string2);
+    println!("The longest string is {}", result);
+}
+
+// ANCHOR: here
+fn longest<'a>(x: &str, y: &str) -> &'a str {
+    let result = String::from("really long string");
+    result.as_str()
+}
+// ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/src/main.rs
new file mode 100644
index 00000000..b841a03e
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/src/main.rs
@@ -0,0 +1,28 @@
+struct ImportantExcerpt<'a> {
+    part: &'a str,
+}
+
+// ANCHOR: 1st
+impl<'a> ImportantExcerpt<'a> {
+    fn level(&self) -> i32 {
+        3
+    }
+}
+// ANCHOR_END: 1st
+
+// ANCHOR: 3rd
+impl<'a> ImportantExcerpt<'a> {
+    fn announce_and_return_part(&self, announcement: &str) -> &str {
+        println!("Attention please: {}", announcement);
+        self.part
+    }
+}
+// ANCHOR_END: 3rd
+
+fn main() {
+    let novel = String::from("Call me Ishmael. Some years ago...");
+    let first_sentence = novel.split('.')
+        .next()
+        .expect("Could not find a '.'");
+    let i = ImportantExcerpt { part: first_sentence };
+}
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/Cargo.lock b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/Cargo.lock
new file mode 100644
index 00000000..6388bb2b
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "chapter10"
+version = "0.1.0"
+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/Cargo.toml b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/Cargo.toml
new file mode 100644
index 00000000..6d5a0ff1
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "chapter10"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/src/main.rs
new file mode 100644
index 00000000..86875233
--- /dev/null
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/src/main.rs
@@ -0,0 +1,22 @@
+fn main() {
+    let string1 = String::from("abcd");
+    let string2 = "xyz";
+
+    let result = longest_with_an_announcement(string1.as_str(), string2, "Today is someone's birthday!");
+    println!("The longest string is {}", result);
+}
+
+// ANCHOR: here
+use std::fmt::Display;
+
+fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
+    where T: Display
+{
+    println!("Announcement! {}", ann);
+    if x.len() > y.len() {
+        x
+    } else {
+        y
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch11-writing-automated-tests/listing-11-01/Cargo.lock b/listings/ch11-writing-automated-tests/listing-11-01/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-01/Cargo.toml b/listings/ch11-writing-automated-tests/listing-11-01/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/listing-11-01/output.txt b/listings/ch11-writing-automated-tests/listing-11-01/output.txt
new file mode 100644
index 00000000..e61930e4
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-01/output.txt
@@ -0,0 +1,16 @@
+$ cargo test
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.22s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 1 test
+test tests::it_works ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+   Doc-tests adder
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-01/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-01/src/lib.rs
new file mode 100644
index 00000000..8e678421
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-01/src/lib.rs
@@ -0,0 +1,11 @@
+// ANCHOR: here
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/listing-11-03/Cargo.lock b/listings/ch11-writing-automated-tests/listing-11-03/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-03/Cargo.toml b/listings/ch11-writing-automated-tests/listing-11-03/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/listing-11-03/output.txt b/listings/ch11-writing-automated-tests/listing-11-03/output.txt
new file mode 100644
index 00000000..2c3052ef
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-03/output.txt
@@ -0,0 +1,22 @@
+$ cargo test
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.90s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 2 tests
+test tests::another ... FAILED
+test tests::exploration ... ok
+
+failures:
+
+---- tests::another stdout ----
+thread 'main' panicked at 'Make this test fail', src/lib.rs:10:9
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+
+
+failures:
+    tests::another
+
+test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch11-writing-automated-tests/listing-11-03/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-03/src/lib.rs
new file mode 100644
index 00000000..92f315ac
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-03/src/lib.rs
@@ -0,0 +1,16 @@
+// ANCHOR: here
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn exploration() {
+        assert_eq!(2 + 2, 4);
+    }
+
+    #[test]
+    fn another() {
+        panic!("Make this test fail");
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/listing-11-05/Cargo.lock b/listings/ch11-writing-automated-tests/listing-11-05/Cargo.lock
new file mode 100644
index 00000000..b67fe4de
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "rectangle"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-05/Cargo.toml b/listings/ch11-writing-automated-tests/listing-11-05/Cargo.toml
new file mode 100644
index 00000000..32efee50
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "rectangle"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/listing-11-05/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-05/src/lib.rs
new file mode 100644
index 00000000..aad33554
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-05/src/lib.rs
@@ -0,0 +1,15 @@
+// ANCHOR: here
+#[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+impl Rectangle {
+    fn can_hold(&self, other: &Rectangle) -> bool {
+        self.width > other.width && self.height > other.height
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/listing-11-06/Cargo.lock b/listings/ch11-writing-automated-tests/listing-11-06/Cargo.lock
new file mode 100644
index 00000000..b67fe4de
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "rectangle"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-06/Cargo.toml b/listings/ch11-writing-automated-tests/listing-11-06/Cargo.toml
new file mode 100644
index 00000000..32efee50
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "rectangle"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/listing-11-06/output.txt b/listings/ch11-writing-automated-tests/listing-11-06/output.txt
new file mode 100644
index 00000000..78a2bca9
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-06/output.txt
@@ -0,0 +1,16 @@
+$ cargo test
+   Compiling rectangle v0.1.0 (file:///projects/rectangle)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.74s
+     Running target/debug/deps/rectangle-25efb29cecd27cb7
+
+running 1 test
+test tests::larger_can_hold_smaller ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+   Doc-tests rectangle
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-06/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-06/src/lib.rs
new file mode 100644
index 00000000..f8a1f921
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-06/src/lib.rs
@@ -0,0 +1,28 @@
+#[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+impl Rectangle {
+    fn can_hold(&self, other: &Rectangle) -> bool {
+        self.width > other.width && self.height > other.height
+    }
+}
+
+// ANCHOR: here
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn larger_can_hold_smaller() {
+        let larger = Rectangle { width: 8, height: 7 };
+        let smaller = Rectangle { width: 5, height: 1 };
+
+        assert!(larger.can_hold(&smaller));
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/listing-11-07/Cargo.lock b/listings/ch11-writing-automated-tests/listing-11-07/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-07/Cargo.toml b/listings/ch11-writing-automated-tests/listing-11-07/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/listing-11-07/output.txt b/listings/ch11-writing-automated-tests/listing-11-07/output.txt
new file mode 100644
index 00000000..0b200e75
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-07/output.txt
@@ -0,0 +1,16 @@
+$ cargo test
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.62s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 1 test
+test tests::it_adds_two ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+   Doc-tests adder
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-07/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-07/src/lib.rs
new file mode 100644
index 00000000..53407327
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-07/src/lib.rs
@@ -0,0 +1,17 @@
+// ANCHOR: here
+pub fn add_two(a: i32) -> i32 {
+    a + 2
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_adds_two() {
+        assert_eq!(4, add_two(2));
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/listing-11-08/Cargo.lock b/listings/ch11-writing-automated-tests/listing-11-08/Cargo.lock
new file mode 100644
index 00000000..3145e605
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-08/Cargo.toml b/listings/ch11-writing-automated-tests/listing-11-08/Cargo.toml
new file mode 100644
index 00000000..922762ab
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/listing-11-08/output.txt b/listings/ch11-writing-automated-tests/listing-11-08/output.txt
new file mode 100644
index 00000000..212e28f2
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-08/output.txt
@@ -0,0 +1,16 @@
+$ cargo test
+   Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.56s
+     Running target/debug/deps/guessing_game-70eb198107cbd930
+
+running 1 test
+test tests::greater_than_100 ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+   Doc-tests guessing_game
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-08/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-08/src/lib.rs
new file mode 100644
index 00000000..68e740a3
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-08/src/lib.rs
@@ -0,0 +1,30 @@
+// ANCHOR: here
+pub struct Guess {
+    value: i32,
+}
+
+impl Guess {
+    pub fn new(value: i32) -> Guess {
+        if value < 1 || value > 100 {
+            panic!("Guess value must be between 1 and 100, got {}.", value);
+        }
+
+        Guess {
+            value
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[should_panic]
+    fn greater_than_100() {
+        Guess::new(200);
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/listing-11-09/Cargo.lock b/listings/ch11-writing-automated-tests/listing-11-09/Cargo.lock
new file mode 100644
index 00000000..3145e605
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-09/Cargo.toml b/listings/ch11-writing-automated-tests/listing-11-09/Cargo.toml
new file mode 100644
index 00000000..922762ab
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/listing-11-09/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-09/src/lib.rs
new file mode 100644
index 00000000..d0069a89
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-09/src/lib.rs
@@ -0,0 +1,35 @@
+pub struct Guess {
+    value: i32,
+}
+
+// ANCHOR: here
+// --snip--
+impl Guess {
+    pub fn new(value: i32) -> Guess {
+        if value < 1 {
+            panic!("Guess value must be greater than or equal to 1, got {}.",
+                   value);
+        } else if value > 100 {
+            panic!("Guess value must be less than or equal to 100, got {}.",
+                   value);
+        }
+
+        Guess {
+            value
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[should_panic(expected = "Guess value must be less than or equal to 100")]
+    fn greater_than_100() {
+        Guess::new(200);
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/listing-11-10/Cargo.lock b/listings/ch11-writing-automated-tests/listing-11-10/Cargo.lock
new file mode 100644
index 00000000..25c04956
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "silly-function"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-10/Cargo.toml b/listings/ch11-writing-automated-tests/listing-11-10/Cargo.toml
new file mode 100644
index 00000000..4e0f185a
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "silly-function"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/listing-11-10/output.txt b/listings/ch11-writing-automated-tests/listing-11-10/output.txt
new file mode 100644
index 00000000..d6eb90ad
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-10/output.txt
@@ -0,0 +1,25 @@
+$ cargo test
+   Compiling silly-function v0.1.0 (file:///projects/silly-function)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.67s
+     Running target/debug/deps/silly_function-01fb9d1182907f15
+
+running 2 tests
+test tests::this_test_will_fail ... FAILED
+test tests::this_test_will_pass ... ok
+
+failures:
+
+---- tests::this_test_will_fail stdout ----
+I got the value 8
+thread 'main' panicked at 'assertion failed: `(left == right)`
+  left: `5`,
+ right: `10`', src/lib.rs:19:9
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+
+
+failures:
+    tests::this_test_will_fail
+
+test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch11-writing-automated-tests/listing-11-10/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-10/src/lib.rs
new file mode 100644
index 00000000..6fd76ce0
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-10/src/lib.rs
@@ -0,0 +1,21 @@
+fn prints_and_returns_10(a: i32) -> i32 {
+    println!("I got the value {}", a);
+    10
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn this_test_will_pass() {
+        let value = prints_and_returns_10(4);
+        assert_eq!(10, value);
+    }
+
+    #[test]
+    fn this_test_will_fail() {
+        let value = prints_and_returns_10(8);
+        assert_eq!(5, value);
+    }
+}
diff --git a/listings/ch11-writing-automated-tests/listing-11-11/Cargo.lock b/listings/ch11-writing-automated-tests/listing-11-11/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-11/Cargo.toml b/listings/ch11-writing-automated-tests/listing-11-11/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/listing-11-11/output.txt b/listings/ch11-writing-automated-tests/listing-11-11/output.txt
new file mode 100644
index 00000000..5d10f3bf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-11/output.txt
@@ -0,0 +1,18 @@
+$ cargo test
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.64s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 3 tests
+test tests::add_three_and_two ... ok
+test tests::add_two_and_two ... ok
+test tests::one_hundred ... ok
+
+test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+   Doc-tests adder
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-11/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-11/src/lib.rs
new file mode 100644
index 00000000..f5671526
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-11/src/lib.rs
@@ -0,0 +1,23 @@
+pub fn add_two(a: i32) -> i32 {
+    a + 2
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn add_two_and_two() {
+        assert_eq!(4, add_two(2));
+    }
+
+    #[test]
+    fn add_three_and_two() {
+        assert_eq!(5, add_two(3));
+    }
+
+    #[test]
+    fn one_hundred() {
+        assert_eq!(102, add_two(100));
+    }
+}
diff --git a/listings/ch11-writing-automated-tests/listing-11-12/Cargo.lock b/listings/ch11-writing-automated-tests/listing-11-12/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-12/Cargo.toml b/listings/ch11-writing-automated-tests/listing-11-12/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/listing-11-12/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-12/src/lib.rs
new file mode 100644
index 00000000..800b84f5
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-12/src/lib.rs
@@ -0,0 +1,21 @@
+// ANCHOR: here
+pub fn add_two(a: i32) -> i32 {
+    internal_adder(a, 2)
+}
+
+fn internal_adder(a: i32, b: i32) -> i32 {
+    a + b
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn internal() {
+        assert_eq!(4, internal_adder(2, 2));
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/listing-11-13/Cargo.lock b/listings/ch11-writing-automated-tests/listing-11-13/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-13/Cargo.toml b/listings/ch11-writing-automated-tests/listing-11-13/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/listing-11-13/output.txt b/listings/ch11-writing-automated-tests/listing-11-13/output.txt
new file mode 100644
index 00000000..b719437e
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-13/output.txt
@@ -0,0 +1,23 @@
+$ cargo test
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.31s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 1 test
+test tests::internal ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+     Running target/debug/deps/integration_test-18ce67e0d628b336
+
+running 1 test
+test it_adds_two ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+   Doc-tests adder
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/listing-11-13/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-13/src/lib.rs
new file mode 100644
index 00000000..f36aba39
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-13/src/lib.rs
@@ -0,0 +1,17 @@
+pub fn add_two(a: i32) -> i32 {
+    internal_adder(a, 2)
+}
+
+fn internal_adder(a: i32, b: i32) -> i32 {
+    a + b
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn internal() {
+        assert_eq!(4, internal_adder(2, 2));
+    }
+}
\ No newline at end of file
diff --git a/listings/ch11-writing-automated-tests/listing-11-13/tests/integration_test.rs b/listings/ch11-writing-automated-tests/listing-11-13/tests/integration_test.rs
new file mode 100644
index 00000000..e26fa710
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/listing-11-13/tests/integration_test.rs
@@ -0,0 +1,6 @@
+use adder;
+
+#[test]
+fn it_adds_two() {
+    assert_eq!(4, adder::add_two(2));
+}
diff --git a/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/output.txt b/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/output.txt
new file mode 100644
index 00000000..d23a8093
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/output.txt
@@ -0,0 +1,16 @@
+$ cargo test
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.69s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 1 test
+test tests::exploration ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+   Doc-tests adder
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/src/lib.rs
new file mode 100644
index 00000000..2974d727
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/src/lib.rs
@@ -0,0 +1,11 @@
+// ANCHOR: here
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn exploration() {
+        assert_eq!(2 + 2, 4);
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/Cargo.lock
new file mode 100644
index 00000000..b67fe4de
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "rectangle"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/Cargo.toml
new file mode 100644
index 00000000..32efee50
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "rectangle"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/output.txt b/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/output.txt
new file mode 100644
index 00000000..2628c97c
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/output.txt
@@ -0,0 +1,17 @@
+$ cargo test
+   Compiling rectangle v0.1.0 (file:///projects/rectangle)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.79s
+     Running target/debug/deps/rectangle-25efb29cecd27cb7
+
+running 2 tests
+test tests::larger_can_hold_smaller ... ok
+test tests::smaller_cannot_hold_larger ... ok
+
+test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+   Doc-tests rectangle
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/src/lib.rs
new file mode 100644
index 00000000..c20a7315
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/src/lib.rs
@@ -0,0 +1,39 @@
+#[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+impl Rectangle {
+    fn can_hold(&self, other: &Rectangle) -> bool {
+        self.width > other.width && self.height > other.height
+    }
+}
+
+// ANCHOR: here
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn larger_can_hold_smaller() {
+        // --snip--
+        // ANCHOR_END: here
+        let larger = Rectangle { width: 8, height: 7 };
+        let smaller = Rectangle { width: 5, height: 1 };
+
+        assert!(larger.can_hold(&smaller));
+        // ANCHOR: here
+    }
+
+    #[test]
+    fn smaller_cannot_hold_larger() {
+        let larger = Rectangle { width: 8, height: 7 };
+        let smaller = Rectangle { width: 5, height: 1 };
+
+        assert!(!smaller.can_hold(&larger));
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/Cargo.lock
new file mode 100644
index 00000000..b67fe4de
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "rectangle"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/Cargo.toml
new file mode 100644
index 00000000..32efee50
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "rectangle"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/output.txt b/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/output.txt
new file mode 100644
index 00000000..7207126a
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/output.txt
@@ -0,0 +1,22 @@
+$ cargo test
+   Compiling rectangle v0.1.0 (file:///projects/rectangle)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.69s
+     Running target/debug/deps/rectangle-25efb29cecd27cb7
+
+running 2 tests
+test tests::larger_can_hold_smaller ... FAILED
+test tests::smaller_cannot_hold_larger ... ok
+
+failures:
+
+---- tests::larger_can_hold_smaller stdout ----
+thread 'main' panicked at 'assertion failed: larger.can_hold(&smaller)', src/lib.rs:22:9
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+
+
+failures:
+    tests::larger_can_hold_smaller
+
+test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/src/lib.rs
new file mode 100644
index 00000000..6e065c65
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/src/lib.rs
@@ -0,0 +1,37 @@
+#[derive(Debug)]
+struct Rectangle {
+    width: u32,
+    height: u32,
+}
+
+// ANCHOR: here
+// --snip--
+impl Rectangle {
+    fn can_hold(&self, other: &Rectangle) -> bool {
+        self.width < other.width && self.height > other.height
+    }
+}
+// ANCHOR_END: here
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn larger_can_hold_smaller() {
+        let larger = Rectangle { width: 8, height: 7 };
+        let smaller = Rectangle { width: 5, height: 1 };
+
+        assert!(larger.can_hold(&smaller));
+    }
+
+    #[test]
+    fn smaller_cannot_hold_larger() {
+        let larger = Rectangle { width: 8, height: 7 };
+        let smaller = Rectangle { width: 5, height: 1 };
+
+        assert!(!smaller.can_hold(&larger));
+    }
+}
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/output.txt b/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/output.txt
new file mode 100644
index 00000000..a6631ca5
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/output.txt
@@ -0,0 +1,23 @@
+$ cargo test
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.68s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 1 test
+test tests::it_adds_two ... FAILED
+
+failures:
+
+---- tests::it_adds_two stdout ----
+thread 'main' panicked at 'assertion failed: `(left == right)`
+  left: `4`,
+ right: `5`', src/lib.rs:11:9
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+
+
+failures:
+    tests::it_adds_two
+
+test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/src/lib.rs
new file mode 100644
index 00000000..8b4534b4
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/src/lib.rs
@@ -0,0 +1,17 @@
+// ANCHOR: here
+pub fn add_two(a: i32) -> i32 {
+    a + 3
+}
+// ANCHOR_END: here
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_adds_two() {
+        assert_eq!(4, add_two(2));
+    }
+}
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/no-listing-05-greeter/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-05-greeter/Cargo.lock
new file mode 100644
index 00000000..175cd34b
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-05-greeter/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "greeter"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-05-greeter/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-05-greeter/Cargo.toml
new file mode 100644
index 00000000..c289e837
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-05-greeter/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "greeter"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-05-greeter/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-05-greeter/src/lib.rs
new file mode 100644
index 00000000..4fcdbbf2
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-05-greeter/src/lib.rs
@@ -0,0 +1,18 @@
+// ANCHOR: here
+pub fn greeting(name: &str) -> String {
+    format!("Hello {}!", name)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn greeting_contains_name() {
+        let result = greeting("Carol");
+        assert!(result.contains("Carol"));
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/Cargo.lock
new file mode 100644
index 00000000..175cd34b
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "greeter"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/Cargo.toml
new file mode 100644
index 00000000..c289e837
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "greeter"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/output.txt b/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/output.txt
new file mode 100644
index 00000000..255fc3e5
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/output.txt
@@ -0,0 +1,21 @@
+$ cargo test
+   Compiling greeter v0.1.0 (file:///projects/greeter)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.87s
+     Running target/debug/deps/greeter-dcea10e99a85879f
+
+running 1 test
+test tests::greeting_contains_name ... FAILED
+
+failures:
+
+---- tests::greeting_contains_name stdout ----
+thread 'main' panicked at 'assertion failed: result.contains("Carol")', src/lib.rs:12:9
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+
+
+failures:
+    tests::greeting_contains_name
+
+test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/src/lib.rs
new file mode 100644
index 00000000..d516534e
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/src/lib.rs
@@ -0,0 +1,18 @@
+// ANCHOR: here
+pub fn greeting(name: &str) -> String {
+    String::from("Hello!")
+}
+// ANCHOR_END: here
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn greeting_contains_name() {
+        let result = greeting("Carol");
+        assert!(result.contains("Carol"));
+    }
+}
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/Cargo.lock
new file mode 100644
index 00000000..175cd34b
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "greeter"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/Cargo.toml
new file mode 100644
index 00000000..c289e837
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "greeter"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/output.txt b/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/output.txt
new file mode 100644
index 00000000..7ae6c520
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/output.txt
@@ -0,0 +1,21 @@
+$ cargo test
+   Compiling greeter v0.1.0 (file:///projects/greeter)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.90s
+     Running target/debug/deps/greeter-dcea10e99a85879f
+
+running 1 test
+test tests::greeting_contains_name ... FAILED
+
+failures:
+
+---- tests::greeting_contains_name stdout ----
+thread 'main' panicked at 'Greeting did not contain name, value was `Hello!`', src/lib.rs:12:9
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+
+
+failures:
+    tests::greeting_contains_name
+
+test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/src/lib.rs
new file mode 100644
index 00000000..bf42d36e
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/src/lib.rs
@@ -0,0 +1,19 @@
+pub fn greeting(name: &str) -> String {
+    String::from("Hello!")
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // ANCHOR: here
+    #[test]
+    fn greeting_contains_name() {
+        let result = greeting("Carol");
+        assert!(
+            result.contains("Carol"),
+            "Greeting did not contain name, value was `{}`", result
+        );
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/Cargo.lock
new file mode 100644
index 00000000..3145e605
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/Cargo.toml
new file mode 100644
index 00000000..922762ab
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/output.txt b/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/output.txt
new file mode 100644
index 00000000..11376f58
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/output.txt
@@ -0,0 +1,16 @@
+$ cargo test
+   Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.65s
+     Running target/debug/deps/guessing_game-70eb198107cbd930
+
+running 1 test
+test tests::greater_than_100 ... FAILED
+
+failures:
+
+failures:
+    tests::greater_than_100
+
+test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/src/lib.rs
new file mode 100644
index 00000000..54096143
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/src/lib.rs
@@ -0,0 +1,31 @@
+pub struct Guess {
+    value: i32,
+}
+
+// ANCHOR: here
+// --snip--
+impl Guess {
+    pub fn new(value: i32) -> Guess {
+        if value < 1  {
+            panic!("Guess value must be between 1 and 100, got {}.", value);
+        }
+
+        Guess {
+            value
+        }
+    }
+}
+// ANCHOR_END: here
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[should_panic]
+    fn greater_than_100() {
+        Guess::new(200);
+    }
+}
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/Cargo.lock
new file mode 100644
index 00000000..3145e605
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/Cargo.toml
new file mode 100644
index 00000000..922762ab
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "guessing_game"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/output.txt b/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/output.txt
new file mode 100644
index 00000000..6cb5ab61
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/output.txt
@@ -0,0 +1,21 @@
+$ cargo test
+   Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.93s
+     Running target/debug/deps/guessing_game-70eb198107cbd930
+
+running 1 test
+test tests::greater_than_100 ... FAILED
+
+failures:
+
+---- tests::greater_than_100 stdout ----
+thread 'main' panicked at 'Guess value must be greater than or equal to 1, got 200.', src/lib.rs:11:13
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+note: panic did not include expected string 'Guess value must be less than or equal to 100'
+
+failures:
+    tests::greater_than_100
+
+test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/src/lib.rs
new file mode 100644
index 00000000..59e818cc
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/src/lib.rs
@@ -0,0 +1,32 @@
+pub struct Guess {
+    value: i32,
+}
+
+impl Guess {
+    pub fn new(value: i32) -> Guess {
+        // ANCHOR: here
+        if value < 1 {
+            panic!("Guess value must be less than or equal to 100, got {}.",
+                   value);
+        } else if value > 100 {
+            panic!("Guess value must be greater than or equal to 1, got {}.",
+                   value);
+        }
+        // ANCHOR_END: here
+
+        Guess {
+            value
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[should_panic(expected = "Guess value must be less than or equal to 100")]
+    fn greater_than_100() {
+        Guess::new(200);
+    }
+}
diff --git a/listings/ch11-writing-automated-tests/no-listing-10-result-in-tests/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-10-result-in-tests/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-10-result-in-tests/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-10-result-in-tests/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-10-result-in-tests/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-10-result-in-tests/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-10-result-in-tests/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-10-result-in-tests/src/lib.rs
new file mode 100644
index 00000000..6284f4f2
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-10-result-in-tests/src/lib.rs
@@ -0,0 +1,11 @@
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() -> Result<(), String> {
+        if 2 + 2 == 4 {
+            Ok(())
+        } else {
+            Err(String::from("two plus two does not equal four"))
+        }
+    }
+}
diff --git a/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/output.txt b/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/output.txt
new file mode 100644
index 00000000..9a2c06cd
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/output.txt
@@ -0,0 +1,17 @@
+$ cargo test
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.24s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 2 tests
+test expensive_test ... ignored
+test it_works ... ok
+
+test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
+
+   Doc-tests adder
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/src/lib.rs
new file mode 100644
index 00000000..9a75301e
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/src/lib.rs
@@ -0,0 +1,14 @@
+// ANCHOR: here
+#[test]
+fn it_works() {
+    assert_eq!(2 + 2, 4);
+}
+
+#[test]
+#[ignore]
+fn expensive_test() {
+    // code that takes an hour to run
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/output.txt b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/output.txt
new file mode 100644
index 00000000..11c1ec73
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/output.txt
@@ -0,0 +1,29 @@
+$ cargo test
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.89s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 1 test
+test tests::internal ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+     Running target/debug/deps/common-83ccd8bd71e531b5
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+     Running target/debug/deps/integration_test-18ce67e0d628b336
+
+running 1 test
+test it_adds_two ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+   Doc-tests adder
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/src/lib.rs
new file mode 100644
index 00000000..f36aba39
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/src/lib.rs
@@ -0,0 +1,17 @@
+pub fn add_two(a: i32) -> i32 {
+    internal_adder(a, 2)
+}
+
+fn internal_adder(a: i32, b: i32) -> i32 {
+    a + b
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn internal() {
+        assert_eq!(4, internal_adder(2, 2));
+    }
+}
\ No newline at end of file
diff --git a/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/tests/common.rs b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/tests/common.rs
new file mode 100644
index 00000000..5fb7a390
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/tests/common.rs
@@ -0,0 +1,3 @@
+pub fn setup() {
+    // setup code specific to your library's tests would go here
+}
diff --git a/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/tests/integration_test.rs b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/tests/integration_test.rs
new file mode 100644
index 00000000..e26fa710
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/tests/integration_test.rs
@@ -0,0 +1,6 @@
+use adder;
+
+#[test]
+fn it_adds_two() {
+    assert_eq!(4, adder::add_two(2));
+}
diff --git a/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/Cargo.lock b/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/Cargo.toml b/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/src/lib.rs
new file mode 100644
index 00000000..f36aba39
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/src/lib.rs
@@ -0,0 +1,17 @@
+pub fn add_two(a: i32) -> i32 {
+    internal_adder(a, 2)
+}
+
+fn internal_adder(a: i32, b: i32) -> i32 {
+    a + b
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn internal() {
+        assert_eq!(4, internal_adder(2, 2));
+    }
+}
\ No newline at end of file
diff --git a/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/tests/common/mod.rs b/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/tests/common/mod.rs
new file mode 100644
index 00000000..5fb7a390
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/tests/common/mod.rs
@@ -0,0 +1,3 @@
+pub fn setup() {
+    // setup code specific to your library's tests would go here
+}
diff --git a/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/tests/integration_test.rs b/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/tests/integration_test.rs
new file mode 100644
index 00000000..58b8b7b8
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/tests/integration_test.rs
@@ -0,0 +1,9 @@
+use adder;
+
+mod common;
+
+#[test]
+fn it_adds_two() {
+    common::setup();
+    assert_eq!(4, adder::add_two(2));
+}
diff --git a/listings/ch11-writing-automated-tests/output-only-01-show-output/Cargo.lock b/listings/ch11-writing-automated-tests/output-only-01-show-output/Cargo.lock
new file mode 100644
index 00000000..25c04956
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-01-show-output/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "silly-function"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/output-only-01-show-output/Cargo.toml b/listings/ch11-writing-automated-tests/output-only-01-show-output/Cargo.toml
new file mode 100644
index 00000000..4e0f185a
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-01-show-output/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "silly-function"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/output-only-01-show-output/output.txt b/listings/ch11-writing-automated-tests/output-only-01-show-output/output.txt
new file mode 100644
index 00000000..caf3b074
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-01-show-output/output.txt
@@ -0,0 +1,6 @@
+$ cargo test -- --show-output
+   Compiling silly-function v0.1.0 (file:///projects/silly-function)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.61s
+     Running target/debug/deps/silly_function-01fb9d1182907f15
+error: Unrecognized option: 'show-output'
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch11-writing-automated-tests/output-only-01-show-output/src/lib.rs b/listings/ch11-writing-automated-tests/output-only-01-show-output/src/lib.rs
new file mode 100644
index 00000000..43c4c92f
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-01-show-output/src/lib.rs
@@ -0,0 +1,21 @@
+pub fn prints_and_returns_10(a: i32) -> i32 {
+    println!("I got the value {}", a);
+    10
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn this_test_will_pass() {
+        let value = prints_and_returns_10(4);
+        assert_eq!(10, value);
+    }
+
+    #[test]
+    fn this_test_will_fail() {
+        let value = prints_and_returns_10(8);
+        assert_eq!(5, value);
+    }
+}
diff --git a/listings/ch11-writing-automated-tests/output-only-02-single-test/Cargo.lock b/listings/ch11-writing-automated-tests/output-only-02-single-test/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-02-single-test/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/output-only-02-single-test/Cargo.toml b/listings/ch11-writing-automated-tests/output-only-02-single-test/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-02-single-test/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/output-only-02-single-test/output.txt b/listings/ch11-writing-automated-tests/output-only-02-single-test/output.txt
new file mode 100644
index 00000000..7184d8b5
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-02-single-test/output.txt
@@ -0,0 +1,10 @@
+$ cargo test one_hundred
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 1 test
+test tests::one_hundred ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 2 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/output-only-02-single-test/src/lib.rs b/listings/ch11-writing-automated-tests/output-only-02-single-test/src/lib.rs
new file mode 100644
index 00000000..f5671526
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-02-single-test/src/lib.rs
@@ -0,0 +1,23 @@
+pub fn add_two(a: i32) -> i32 {
+    a + 2
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn add_two_and_two() {
+        assert_eq!(4, add_two(2));
+    }
+
+    #[test]
+    fn add_three_and_two() {
+        assert_eq!(5, add_two(3));
+    }
+
+    #[test]
+    fn one_hundred() {
+        assert_eq!(102, add_two(100));
+    }
+}
diff --git a/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/Cargo.lock b/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/Cargo.toml b/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/output.txt b/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/output.txt
new file mode 100644
index 00000000..63371a44
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/output.txt
@@ -0,0 +1,11 @@
+$ cargo test add
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 2 tests
+test tests::add_three_and_two ... ok
+test tests::add_two_and_two ... ok
+
+test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 1 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/src/lib.rs b/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/src/lib.rs
new file mode 100644
index 00000000..f5671526
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-03-multiple-tests/src/lib.rs
@@ -0,0 +1,23 @@
+pub fn add_two(a: i32) -> i32 {
+    a + 2
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn add_two_and_two() {
+        assert_eq!(4, add_two(2));
+    }
+
+    #[test]
+    fn add_three_and_two() {
+        assert_eq!(5, add_two(3));
+    }
+
+    #[test]
+    fn one_hundred() {
+        assert_eq!(102, add_two(100));
+    }
+}
diff --git a/listings/ch11-writing-automated-tests/output-only-04-running-ignored/Cargo.lock b/listings/ch11-writing-automated-tests/output-only-04-running-ignored/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-04-running-ignored/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/output-only-04-running-ignored/Cargo.toml b/listings/ch11-writing-automated-tests/output-only-04-running-ignored/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-04-running-ignored/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/output-only-04-running-ignored/output.txt b/listings/ch11-writing-automated-tests/output-only-04-running-ignored/output.txt
new file mode 100644
index 00000000..8ca2c878
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-04-running-ignored/output.txt
@@ -0,0 +1,16 @@
+$ cargo test -- --ignored
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
+     Running target/debug/deps/adder-c8315fb1790f5086
+
+running 1 test
+test expensive_test ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 1 filtered out
+
+   Doc-tests adder
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/output-only-04-running-ignored/src/lib.rs b/listings/ch11-writing-automated-tests/output-only-04-running-ignored/src/lib.rs
new file mode 100644
index 00000000..9a75301e
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-04-running-ignored/src/lib.rs
@@ -0,0 +1,14 @@
+// ANCHOR: here
+#[test]
+fn it_works() {
+    assert_eq!(2 + 2, 4);
+}
+
+#[test]
+#[ignore]
+fn expensive_test() {
+    // code that takes an hour to run
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch11-writing-automated-tests/output-only-05-single-integration/Cargo.lock b/listings/ch11-writing-automated-tests/output-only-05-single-integration/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-05-single-integration/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch11-writing-automated-tests/output-only-05-single-integration/Cargo.toml b/listings/ch11-writing-automated-tests/output-only-05-single-integration/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-05-single-integration/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch11-writing-automated-tests/output-only-05-single-integration/output.txt b/listings/ch11-writing-automated-tests/output-only-05-single-integration/output.txt
new file mode 100644
index 00000000..eed35616
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-05-single-integration/output.txt
@@ -0,0 +1,10 @@
+$ cargo test --test integration_test
+   Compiling adder v0.1.0 (file:///projects/adder)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
+     Running target/debug/deps/integration_test-18ce67e0d628b336
+
+running 1 test
+test it_adds_two ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch11-writing-automated-tests/output-only-05-single-integration/src/lib.rs b/listings/ch11-writing-automated-tests/output-only-05-single-integration/src/lib.rs
new file mode 100644
index 00000000..f36aba39
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-05-single-integration/src/lib.rs
@@ -0,0 +1,17 @@
+pub fn add_two(a: i32) -> i32 {
+    internal_adder(a, 2)
+}
+
+fn internal_adder(a: i32, b: i32) -> i32 {
+    a + b
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn internal() {
+        assert_eq!(4, internal_adder(2, 2));
+    }
+}
\ No newline at end of file
diff --git a/listings/ch11-writing-automated-tests/output-only-05-single-integration/tests/integration_test.rs b/listings/ch11-writing-automated-tests/output-only-05-single-integration/tests/integration_test.rs
new file mode 100644
index 00000000..e26fa710
--- /dev/null
+++ b/listings/ch11-writing-automated-tests/output-only-05-single-integration/tests/integration_test.rs
@@ -0,0 +1,6 @@
+use adder;
+
+#[test]
+fn it_adds_two() {
+    assert_eq!(4, adder::add_two(2));
+}
diff --git a/listings/ch12-an-io-project/listing-12-01/Cargo.lock b/listings/ch12-an-io-project/listing-12-01/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-01/Cargo.toml b/listings/ch12-an-io-project/listing-12-01/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-01/output.txt b/listings/ch12-an-io-project/listing-12-01/output.txt
new file mode 100644
index 00000000..d0ef9981
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-01/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.61s
+     Running `target/debug/minigrep`
+["target/debug/minigrep"]
diff --git a/listings/ch12-an-io-project/listing-12-01/src/main.rs b/listings/ch12-an-io-project/listing-12-01/src/main.rs
new file mode 100644
index 00000000..aa3056de
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-01/src/main.rs
@@ -0,0 +1,6 @@
+use std::env;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+    println!("{:?}", args);
+}
diff --git a/listings/ch12-an-io-project/listing-12-02/Cargo.lock b/listings/ch12-an-io-project/listing-12-02/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-02/Cargo.toml b/listings/ch12-an-io-project/listing-12-02/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-02/output.txt b/listings/ch12-an-io-project/listing-12-02/output.txt
new file mode 100644
index 00000000..f759eea0
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-02/output.txt
@@ -0,0 +1,6 @@
+$ cargo run test sample.txt
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
+     Running `target/debug/minigrep test sample.txt`
+Searching for test
+In file sample.txt
diff --git a/listings/ch12-an-io-project/listing-12-02/src/main.rs b/listings/ch12-an-io-project/listing-12-02/src/main.rs
new file mode 100644
index 00000000..8daf125c
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-02/src/main.rs
@@ -0,0 +1,11 @@
+use std::env;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let query = &args[1];
+    let filename = &args[2];
+
+    println!("Searching for {}", query);
+    println!("In file {}", filename);
+}
diff --git a/listings/ch12-an-io-project/listing-12-03/Cargo.lock b/listings/ch12-an-io-project/listing-12-03/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-03/Cargo.toml b/listings/ch12-an-io-project/listing-12-03/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-03/poem.txt b/listings/ch12-an-io-project/listing-12-03/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-03/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-03/src/main.rs b/listings/ch12-an-io-project/listing-12-03/src/main.rs
new file mode 100644
index 00000000..8daf125c
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-03/src/main.rs
@@ -0,0 +1,11 @@
+use std::env;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let query = &args[1];
+    let filename = &args[2];
+
+    println!("Searching for {}", query);
+    println!("In file {}", filename);
+}
diff --git a/listings/ch12-an-io-project/listing-12-04/Cargo.lock b/listings/ch12-an-io-project/listing-12-04/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-04/Cargo.toml b/listings/ch12-an-io-project/listing-12-04/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-04/output.txt b/listings/ch12-an-io-project/listing-12-04/output.txt
new file mode 100644
index 00000000..75e7863e
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-04/output.txt
@@ -0,0 +1,17 @@
+$ cargo run the poem.txt
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
+     Running `target/debug/minigrep the poem.txt`
+Searching for the
+In file poem.txt
+With text:
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
+
diff --git a/listings/ch12-an-io-project/listing-12-04/poem.txt b/listings/ch12-an-io-project/listing-12-04/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-04/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-04/src/main.rs b/listings/ch12-an-io-project/listing-12-04/src/main.rs
new file mode 100644
index 00000000..9a0eade5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-04/src/main.rs
@@ -0,0 +1,22 @@
+// ANCHOR: here
+use std::env;
+use std::fs;
+
+fn main() {
+    // --snip--
+    // ANCHOR_END: here
+    let args: Vec<String> = env::args().collect();
+
+    let query = &args[1];
+    let filename = &args[2];
+
+    println!("Searching for {}", query);
+    // ANCHOR: here
+    println!("In file {}", filename);
+
+    let contents = fs::read_to_string(filename)
+        .expect("Something went wrong reading the file");
+
+    println!("With text:\n{}", contents);
+}
+// ANCHOR_END: here
diff --git a/listings/ch12-an-io-project/listing-12-05/Cargo.lock b/listings/ch12-an-io-project/listing-12-05/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-05/Cargo.toml b/listings/ch12-an-io-project/listing-12-05/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-05/poem.txt b/listings/ch12-an-io-project/listing-12-05/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-05/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-05/src/main.rs b/listings/ch12-an-io-project/listing-12-05/src/main.rs
new file mode 100644
index 00000000..fb880568
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-05/src/main.rs
@@ -0,0 +1,29 @@
+use std::env;
+use std::fs;
+
+// ANCHOR: here
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let (query, filename) = parse_config(&args);
+
+    // --snip--
+    // ANCHOR_END: here
+
+    println!("Searching for {}", query);
+    println!("In file {}", filename);
+
+    let contents = fs::read_to_string(filename)
+        .expect("Something went wrong reading the file");
+
+    println!("With text:\n{}", contents);
+    // ANCHOR: here
+}
+
+fn parse_config(args: &[String]) -> (&str, &str) {
+    let query = &args[1];
+    let filename = &args[2];
+
+    (query, filename)
+}
+// ANCHOR_END: here
diff --git a/listings/ch12-an-io-project/listing-12-06/Cargo.lock b/listings/ch12-an-io-project/listing-12-06/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-06/Cargo.toml b/listings/ch12-an-io-project/listing-12-06/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-06/poem.txt b/listings/ch12-an-io-project/listing-12-06/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-06/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-06/src/main.rs b/listings/ch12-an-io-project/listing-12-06/src/main.rs
new file mode 100644
index 00000000..b5d89bc9
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-06/src/main.rs
@@ -0,0 +1,34 @@
+use std::env;
+use std::fs;
+
+// ANCHOR: here
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = parse_config(&args);
+
+    println!("Searching for {}", config.query);
+    println!("In file {}", config.filename);
+
+    let contents = fs::read_to_string(config.filename)
+        .expect("Something went wrong reading the file");
+
+    // --snip--
+    // ANCHOR_END: here
+
+    println!("With text:\n{}", contents);
+    // ANCHOR: here
+}
+
+struct Config {
+    query: String,
+    filename: String,
+}
+
+fn parse_config(args: &[String]) -> Config {
+    let query = args[1].clone();
+    let filename = args[2].clone();
+
+    Config { query, filename }
+}
+// ANCHOR_END: here
diff --git a/listings/ch12-an-io-project/listing-12-07/Cargo.lock b/listings/ch12-an-io-project/listing-12-07/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-07/Cargo.toml b/listings/ch12-an-io-project/listing-12-07/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-07/output.txt b/listings/ch12-an-io-project/listing-12-07/output.txt
new file mode 100644
index 00000000..8c8d53aa
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-07/output.txt
@@ -0,0 +1,6 @@
+$ cargo run
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
+     Running `target/debug/minigrep`
+thread 'main' panicked at 'index out of bounds: the len is 1 but the index is 1', src/main.rs:27:21
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
diff --git a/listings/ch12-an-io-project/listing-12-07/poem.txt b/listings/ch12-an-io-project/listing-12-07/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-07/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-07/src/main.rs b/listings/ch12-an-io-project/listing-12-07/src/main.rs
new file mode 100644
index 00000000..36d35cea
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-07/src/main.rs
@@ -0,0 +1,40 @@
+use std::env;
+use std::fs;
+
+// ANCHOR: here
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args);
+    // ANCHOR_END: here
+
+    println!("Searching for {}", config.query);
+    println!("In file {}", config.filename);
+
+    let contents = fs::read_to_string(config.filename)
+        .expect("Something went wrong reading the file");
+
+    println!("With text:\n{}", contents);
+    // ANCHOR: here
+
+    // --snip--
+}
+
+// --snip--
+
+// ANCHOR_END: here
+struct Config {
+    query: String,
+    filename: String,
+}
+
+// ANCHOR: here
+impl Config {
+    fn new(args: &[String]) -> Config {
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Config { query, filename }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch12-an-io-project/listing-12-08/Cargo.lock b/listings/ch12-an-io-project/listing-12-08/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-08/Cargo.toml b/listings/ch12-an-io-project/listing-12-08/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-08/output.txt b/listings/ch12-an-io-project/listing-12-08/output.txt
new file mode 100644
index 00000000..fa5d235e
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-08/output.txt
@@ -0,0 +1,6 @@
+$ cargo run
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
+     Running `target/debug/minigrep`
+thread 'main' panicked at 'not enough arguments', src/main.rs:26:13
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
diff --git a/listings/ch12-an-io-project/listing-12-08/poem.txt b/listings/ch12-an-io-project/listing-12-08/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-08/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-08/src/main.rs b/listings/ch12-an-io-project/listing-12-08/src/main.rs
new file mode 100644
index 00000000..462a16a0
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-08/src/main.rs
@@ -0,0 +1,38 @@
+use std::env;
+use std::fs;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args);
+
+    println!("Searching for {}", config.query);
+    println!("In file {}", config.filename);
+
+    let contents = fs::read_to_string(config.filename)
+        .expect("Something went wrong reading the file");
+
+    println!("With text:\n{}", contents);
+}
+
+struct Config {
+    query: String,
+    filename: String,
+}
+
+impl Config {
+    // ANCHOR: here
+// --snip--
+    fn new(args: &[String]) -> Config {
+        if args.len() < 3 {
+            panic!("not enough arguments");
+        }
+        // --snip--
+        // ANCHOR_END: here
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Config { query, filename }
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-09/Cargo.lock b/listings/ch12-an-io-project/listing-12-09/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-09/Cargo.toml b/listings/ch12-an-io-project/listing-12-09/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-09/poem.txt b/listings/ch12-an-io-project/listing-12-09/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-09/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-09/src/main.rs b/listings/ch12-an-io-project/listing-12-09/src/main.rs
new file mode 100644
index 00000000..83f46ee3
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-09/src/main.rs
@@ -0,0 +1,36 @@
+use std::env;
+use std::fs;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args);
+
+    println!("Searching for {}", config.query);
+    println!("In file {}", config.filename);
+
+    let contents = fs::read_to_string(config.filename)
+        .expect("Something went wrong reading the file");
+
+    println!("With text:\n{}", contents);
+}
+
+struct Config {
+    query: String,
+    filename: String,
+}
+
+// ANCHOR: here
+impl Config {
+    fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch12-an-io-project/listing-12-10/Cargo.lock b/listings/ch12-an-io-project/listing-12-10/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-10/Cargo.toml b/listings/ch12-an-io-project/listing-12-10/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-10/output.txt b/listings/ch12-an-io-project/listing-12-10/output.txt
new file mode 100644
index 00000000..7aad57f5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-10/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.48s
+     Running `target/debug/minigrep`
+Problem parsing arguments: not enough arguments
diff --git a/listings/ch12-an-io-project/listing-12-10/poem.txt b/listings/ch12-an-io-project/listing-12-10/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-10/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-10/src/main.rs b/listings/ch12-an-io-project/listing-12-10/src/main.rs
new file mode 100644
index 00000000..c8aeb1d3
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-10/src/main.rs
@@ -0,0 +1,42 @@
+use std::env;
+use std::fs;
+// ANCHOR: here
+use std::process;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    // --snip--
+    // ANCHOR_END: here
+
+    println!("Searching for {}", config.query);
+    println!("In file {}", config.filename);
+
+    let contents = fs::read_to_string(config.filename)
+        .expect("Something went wrong reading the file");
+
+    println!("With text:\n{}", contents);
+}
+
+struct Config {
+    query: String,
+    filename: String,
+}
+
+impl Config {
+    fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-11/Cargo.lock b/listings/ch12-an-io-project/listing-12-11/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-11/Cargo.toml b/listings/ch12-an-io-project/listing-12-11/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-11/poem.txt b/listings/ch12-an-io-project/listing-12-11/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-11/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-11/src/main.rs b/listings/ch12-an-io-project/listing-12-11/src/main.rs
new file mode 100644
index 00000000..974b503b
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-11/src/main.rs
@@ -0,0 +1,50 @@
+use std::env;
+use std::fs;
+use std::process;
+
+// ANCHOR: here
+fn main() {
+    // --snip--
+
+    // ANCHOR_END: here
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    // ANCHOR: here
+    println!("Searching for {}", config.query);
+    println!("In file {}", config.filename);
+
+    run(config);
+}
+
+fn run(config: Config) {
+    let contents = fs::read_to_string(config.filename)
+        .expect("Something went wrong reading the file");
+
+    println!("With text:\n{}", contents);
+}
+
+// --snip--
+// ANCHOR_END: here
+
+struct Config {
+    query: String,
+    filename: String,
+}
+
+impl Config {
+    fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-12/Cargo.lock b/listings/ch12-an-io-project/listing-12-12/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-12/Cargo.toml b/listings/ch12-an-io-project/listing-12-12/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-12/output.txt b/listings/ch12-an-io-project/listing-12-12/output.txt
new file mode 100644
index 00000000..2ba70808
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-12/output.txt
@@ -0,0 +1,26 @@
+$ cargo run the poem.txt
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+warning: unused `std::result::Result` that must be used
+  --> src/main.rs:19:5
+   |
+19 |     run(config);
+   |     ^^^^^^^^^^^^
+   |
+   = note: #[warn(unused_must_use)] on by default
+   = note: this `Result` may be an `Err` variant, which should be handled
+
+    Finished dev [unoptimized + debuginfo] target(s) in 0.71s
+     Running `target/debug/minigrep the poem.txt`
+Searching for the
+In file poem.txt
+With text:
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
+
diff --git a/listings/ch12-an-io-project/listing-12-12/poem.txt b/listings/ch12-an-io-project/listing-12-12/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-12/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-12/src/main.rs b/listings/ch12-an-io-project/listing-12-12/src/main.rs
new file mode 100644
index 00000000..f2e0e6b9
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-12/src/main.rs
@@ -0,0 +1,51 @@
+use std::env;
+use std::fs;
+use std::process;
+// ANCHOR: here
+use std::error::Error;
+
+// --snip--
+
+// ANCHOR_END: here
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    println!("Searching for {}", config.query);
+    println!("In file {}", config.filename);
+
+    run(config);
+}
+
+// ANCHOR: here
+fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    println!("With text:\n{}", contents);
+
+    Ok(())
+}
+// ANCHOR_END: here
+
+struct Config {
+    query: String,
+    filename: String,
+}
+
+impl Config {
+    fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-13/Cargo.lock b/listings/ch12-an-io-project/listing-12-13/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-13/Cargo.toml b/listings/ch12-an-io-project/listing-12-13/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-13/poem.txt b/listings/ch12-an-io-project/listing-12-13/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-13/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-13/src/lib.rs b/listings/ch12-an-io-project/listing-12-13/src/lib.rs
new file mode 100644
index 00000000..5b2850a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-13/src/lib.rs
@@ -0,0 +1,36 @@
+// ANCHOR: here
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        // --snip--
+        // ANCHOR_END: here
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+        // ANCHOR: here
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    // --snip--
+    // ANCHOR_END: here
+    let contents = fs::read_to_string(config.filename)?;
+
+    println!("With text:\n{}", contents);
+
+    Ok(())
+    // ANCHOR: here
+}
+// ANCHOR_END: here
diff --git a/listings/ch12-an-io-project/listing-12-13/src/main.rs b/listings/ch12-an-io-project/listing-12-13/src/main.rs
new file mode 100644
index 00000000..b2447dce
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-13/src/main.rs
@@ -0,0 +1,20 @@
+use std::env;
+use std::process;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    println!("Searching for {}", config.query);
+    println!("In file {}", config.filename);
+
+    if let Err(e) = run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-14/Cargo.lock b/listings/ch12-an-io-project/listing-12-14/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-14/Cargo.toml b/listings/ch12-an-io-project/listing-12-14/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-14/poem.txt b/listings/ch12-an-io-project/listing-12-14/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-14/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-14/src/lib.rs b/listings/ch12-an-io-project/listing-12-14/src/lib.rs
new file mode 100644
index 00000000..2ba2fd19
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-14/src/lib.rs
@@ -0,0 +1,28 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    println!("With text:\n{}", contents);
+
+    Ok(())
+}
diff --git a/listings/ch12-an-io-project/listing-12-14/src/main.rs b/listings/ch12-an-io-project/listing-12-14/src/main.rs
new file mode 100644
index 00000000..5eb4024f
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-14/src/main.rs
@@ -0,0 +1,30 @@
+// ANCHOR: here
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    // --snip--
+    // ANCHOR_END: here
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    println!("Searching for {}", config.query);
+    println!("In file {}", config.filename);
+
+    // ANCHOR: here
+    if let Err(e) = minigrep::run(config) {
+        // --snip--
+        // ANCHOR_END: here
+        println!("Application error: {}", e);
+
+        process::exit(1);
+        // ANCHOR: here
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch12-an-io-project/listing-12-15/Cargo.lock b/listings/ch12-an-io-project/listing-12-15/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-15/Cargo.toml b/listings/ch12-an-io-project/listing-12-15/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-15/poem.txt b/listings/ch12-an-io-project/listing-12-15/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-15/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-15/src/lib.rs b/listings/ch12-an-io-project/listing-12-15/src/lib.rs
new file mode 100644
index 00000000..74a92643
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-15/src/lib.rs
@@ -0,0 +1,49 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    Ok(())
+}
+
+// ANCHOR: here
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn one_result() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch12-an-io-project/listing-12-15/src/main.rs b/listings/ch12-an-io-project/listing-12-15/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-15/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-16/Cargo.lock b/listings/ch12-an-io-project/listing-12-16/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-16/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-16/Cargo.toml b/listings/ch12-an-io-project/listing-12-16/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-16/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-16/output.txt b/listings/ch12-an-io-project/listing-12-16/output.txt
new file mode 100644
index 00000000..673760ac
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-16/output.txt
@@ -0,0 +1,23 @@
+$ cargo test
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.43s
+     Running target/debug/deps/minigrep-2413544be48babd8
+
+running 1 test
+test tests::one_result ... FAILED
+
+failures:
+
+---- tests::one_result stdout ----
+thread 'main' panicked at 'assertion failed: `(left == right)`
+  left: `["safe, fast, productive."]`,
+ right: `[]`', src/lib.rs:44:9
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+
+
+failures:
+    tests::one_result
+
+test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch12-an-io-project/listing-12-16/poem.txt b/listings/ch12-an-io-project/listing-12-16/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-16/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-16/src/lib.rs b/listings/ch12-an-io-project/listing-12-16/src/lib.rs
new file mode 100644
index 00000000..a1d09a31
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-16/src/lib.rs
@@ -0,0 +1,53 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    Ok(())
+}
+
+// ANCHOR: here
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    vec![]
+}
+// ANCHOR_END: here
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn one_result() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+}
+
+fn main() {}
diff --git a/listings/ch12-an-io-project/listing-12-16/src/main.rs b/listings/ch12-an-io-project/listing-12-16/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-16/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-17/Cargo.lock b/listings/ch12-an-io-project/listing-12-17/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-17/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-17/Cargo.toml b/listings/ch12-an-io-project/listing-12-17/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-17/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-17/poem.txt b/listings/ch12-an-io-project/listing-12-17/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-17/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-17/src/lib.rs b/listings/ch12-an-io-project/listing-12-17/src/lib.rs
new file mode 100644
index 00000000..18513672
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-17/src/lib.rs
@@ -0,0 +1,53 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    Ok(())
+}
+
+// ANCHOR: here
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    for line in contents.lines() {
+        // do something with line
+    }
+}
+// ANCHOR_END: here
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn one_result() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-17/src/main.rs b/listings/ch12-an-io-project/listing-12-17/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-17/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-18/Cargo.lock b/listings/ch12-an-io-project/listing-12-18/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-18/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-18/Cargo.toml b/listings/ch12-an-io-project/listing-12-18/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-18/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-18/poem.txt b/listings/ch12-an-io-project/listing-12-18/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-18/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-18/src/lib.rs b/listings/ch12-an-io-project/listing-12-18/src/lib.rs
new file mode 100644
index 00000000..94c59b79
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-18/src/lib.rs
@@ -0,0 +1,55 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    Ok(())
+}
+
+// ANCHOR: here
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    for line in contents.lines() {
+        if line.contains(query) {
+            // do something with line
+        }
+    }
+}
+// ANCHOR_END: here
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn one_result() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-18/src/main.rs b/listings/ch12-an-io-project/listing-12-18/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-18/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-19/Cargo.lock b/listings/ch12-an-io-project/listing-12-19/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-19/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-19/Cargo.toml b/listings/ch12-an-io-project/listing-12-19/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-19/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-19/output.txt b/listings/ch12-an-io-project/listing-12-19/output.txt
new file mode 100644
index 00000000..06e57b8e
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-19/output.txt
@@ -0,0 +1,22 @@
+$ cargo test
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 1.77s
+     Running target/debug/deps/minigrep-2413544be48babd8
+
+running 1 test
+test tests::one_result ... ok
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+     Running target/debug/deps/minigrep-fbafa3053caa51fd
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+   Doc-tests minigrep
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch12-an-io-project/listing-12-19/poem.txt b/listings/ch12-an-io-project/listing-12-19/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-19/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-19/src/lib.rs b/listings/ch12-an-io-project/listing-12-19/src/lib.rs
new file mode 100644
index 00000000..2e09856c
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-19/src/lib.rs
@@ -0,0 +1,61 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    Ok(())
+}
+
+// ANCHOR: here
+// ANCHOR: ch13
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+// ANCHOR_END: ch13
+// ANCHOR_END: here
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn one_result() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-19/src/main.rs b/listings/ch12-an-io-project/listing-12-19/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-19/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-20/Cargo.lock b/listings/ch12-an-io-project/listing-12-20/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-20/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-20/Cargo.toml b/listings/ch12-an-io-project/listing-12-20/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-20/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-20/poem.txt b/listings/ch12-an-io-project/listing-12-20/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-20/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-20/src/lib.rs b/listings/ch12-an-io-project/listing-12-20/src/lib.rs
new file mode 100644
index 00000000..6ed35e09
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-20/src/lib.rs
@@ -0,0 +1,81 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    for line in search(&config.query, &contents) {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+// ANCHOR: here
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn case_sensitive() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Duct tape.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+
+    #[test]
+    fn case_insensitive() {
+        let query = "rUsT";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Trust me.";
+
+        assert_eq!(
+            vec!["Rust:", "Trust me."],
+            search_case_insensitive(query, contents)
+        );
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch12-an-io-project/listing-12-20/src/main.rs b/listings/ch12-an-io-project/listing-12-20/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-20/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-21/Cargo.lock b/listings/ch12-an-io-project/listing-12-21/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-21/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-21/Cargo.toml b/listings/ch12-an-io-project/listing-12-21/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-21/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-21/output.txt b/listings/ch12-an-io-project/listing-12-21/output.txt
new file mode 100644
index 00000000..fd173c7b
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-21/output.txt
@@ -0,0 +1,23 @@
+$ cargo test
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 1.33s
+     Running target/debug/deps/minigrep-2413544be48babd8
+
+running 2 tests
+test tests::case_insensitive ... ok
+test tests::case_sensitive ... ok
+
+test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+     Running target/debug/deps/minigrep-fbafa3053caa51fd
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
+   Doc-tests minigrep
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/listings/ch12-an-io-project/listing-12-21/poem.txt b/listings/ch12-an-io-project/listing-12-21/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-21/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-21/src/lib.rs b/listings/ch12-an-io-project/listing-12-21/src/lib.rs
new file mode 100644
index 00000000..58fbf469
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-21/src/lib.rs
@@ -0,0 +1,94 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    for line in search(&config.query, &contents) {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+// ANCHOR: here
+pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let query = query.to_lowercase();
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.to_lowercase().contains(&query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+// ANCHOR_END: here
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn case_sensitive() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Duct tape.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+
+    #[test]
+    fn case_insensitive() {
+        let query = "rUsT";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Trust me.";
+
+        assert_eq!(
+            vec!["Rust:", "Trust me."],
+            search_case_insensitive(query, contents)
+        );
+    }
+}
+
+fn main() {}
diff --git a/listings/ch12-an-io-project/listing-12-21/src/main.rs b/listings/ch12-an-io-project/listing-12-21/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-21/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-22/Cargo.lock b/listings/ch12-an-io-project/listing-12-22/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-22/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-22/Cargo.toml b/listings/ch12-an-io-project/listing-12-22/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-22/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-22/poem.txt b/listings/ch12-an-io-project/listing-12-22/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-22/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-22/src/lib.rs b/listings/ch12-an-io-project/listing-12-22/src/lib.rs
new file mode 100644
index 00000000..667c003a
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-22/src/lib.rs
@@ -0,0 +1,103 @@
+use std::error::Error;
+use std::fs;
+
+// ANCHOR: here
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+    pub case_sensitive: bool,
+}
+// ANCHOR_END: here
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+// ANCHOR: there
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    let results = if config.case_sensitive {
+        search(&config.query, &contents)
+    } else {
+        search_case_insensitive(&config.query, &contents)
+    };
+
+    for line in results {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+// ANCHOR_END: there
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let query = query.to_lowercase();
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.to_lowercase().contains(&query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn case_sensitive() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Duct tape.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+
+    #[test]
+    fn case_insensitive() {
+        let query = "rUsT";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Trust me.";
+
+        assert_eq!(
+            vec!["Rust:", "Trust me."],
+            search_case_insensitive(query, contents)
+        );
+    }
+}
+
+fn main() {}
diff --git a/listings/ch12-an-io-project/listing-12-22/src/main.rs b/listings/ch12-an-io-project/listing-12-22/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-22/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-23/Cargo.lock b/listings/ch12-an-io-project/listing-12-23/Cargo.lock
new file mode 100644
index 00000000..88bf82d1
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-23/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-23/Cargo.toml b/listings/ch12-an-io-project/listing-12-23/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-23/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-23/output.txt b/listings/ch12-an-io-project/listing-12-23/output.txt
new file mode 100644
index 00000000..0f0f07f7
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-23/output.txt
@@ -0,0 +1,6 @@
+$ cargo run to poem.txt
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
+     Running `target/debug/minigrep to poem.txt`
+Are you nobody, too?
+How dreary to be somebody!
diff --git a/listings/ch12-an-io-project/listing-12-23/poem.txt b/listings/ch12-an-io-project/listing-12-23/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-23/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-23/src/lib.rs b/listings/ch12-an-io-project/listing-12-23/src/lib.rs
new file mode 100644
index 00000000..920d6747
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-23/src/lib.rs
@@ -0,0 +1,108 @@
+// ANCHOR: here
+use std::env;
+// --snip--
+
+// ANCHOR_END: here
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+    pub case_sensitive: bool,
+}
+
+// ANCHOR: here
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        let case_sensitive = env::var("CASE_INSENSITIVE").is_err();
+
+        Ok(Config { query, filename, case_sensitive })
+    }
+}
+// ANCHOR_END: here
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    let results = if config.case_sensitive {
+        search(&config.query, &contents)
+    } else {
+        search_case_insensitive(&config.query, &contents)
+    };
+
+    for line in results {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let query = query.to_lowercase();
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.to_lowercase().contains(&query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn case_sensitive() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Duct tape.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+
+    #[test]
+    fn case_insensitive() {
+        let query = "rUsT";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Trust me.";
+
+        assert_eq!(
+            vec!["Rust:", "Trust me."],
+            search_case_insensitive(query, contents)
+        );
+    }
+}
+
+fn main() {}
diff --git a/listings/ch12-an-io-project/listing-12-23/src/main.rs b/listings/ch12-an-io-project/listing-12-23/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-23/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-24/Cargo.lock b/listings/ch12-an-io-project/listing-12-24/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-24/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/listing-12-24/Cargo.toml b/listings/ch12-an-io-project/listing-12-24/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-24/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/listing-12-24/poem.txt b/listings/ch12-an-io-project/listing-12-24/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-24/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/listing-12-24/src/lib.rs b/listings/ch12-an-io-project/listing-12-24/src/lib.rs
new file mode 100644
index 00000000..10792052
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-24/src/lib.rs
@@ -0,0 +1,100 @@
+use std::env;
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+    pub case_sensitive: bool,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        let case_sensitive = env::var("CASE_INSENSITIVE").is_err();
+
+        Ok(Config { query, filename, case_sensitive })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    let results = if config.case_sensitive {
+        search(&config.query, &contents)
+    } else {
+        search_case_insensitive(&config.query, &contents)
+    };
+
+    for line in results {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let query = query.to_lowercase();
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.to_lowercase().contains(&query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn case_sensitive() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Duct tape.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+
+    #[test]
+    fn case_insensitive() {
+        let query = "rUsT";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Trust me.";
+
+        assert_eq!(
+            vec!["Rust:", "Trust me."],
+            search_case_insensitive(query, contents)
+        );
+    }
+}
diff --git a/listings/ch12-an-io-project/listing-12-24/src/main.rs b/listings/ch12-an-io-project/listing-12-24/src/main.rs
new file mode 100644
index 00000000..9e38553c
--- /dev/null
+++ b/listings/ch12-an-io-project/listing-12-24/src/main.rs
@@ -0,0 +1,21 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+// ANCHOR: here
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        eprintln!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        eprintln!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/Cargo.lock b/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/Cargo.toml b/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/poem.txt b/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/src/main.rs b/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/src/main.rs
new file mode 100644
index 00000000..88df1eb2
--- /dev/null
+++ b/listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/src/main.rs
@@ -0,0 +1,54 @@
+use std::env;
+use std::fs;
+use std::process;
+use std::error::Error;
+
+// ANCHOR: here
+fn main() {
+    // --snip--
+
+    // ANCHOR_END: here
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    // ANCHOR: here
+    println!("Searching for {}", config.query);
+    println!("In file {}", config.filename);
+
+    if let Err(e) = run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
+// ANCHOR_END: here
+
+fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    println!("With text:\n{}", contents);
+
+    Ok(())
+}
+
+struct Config {
+    query: String,
+    filename: String,
+}
+
+impl Config {
+    fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
diff --git a/listings/ch12-an-io-project/no-listing-02-using-search-in-run/Cargo.lock b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/no-listing-02-using-search-in-run/Cargo.toml b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/no-listing-02-using-search-in-run/output.txt b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/output.txt
new file mode 100644
index 00000000..91532d0c
--- /dev/null
+++ b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/output.txt
@@ -0,0 +1,5 @@
+$ cargo run frog poem.txt
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.38s
+     Running `target/debug/minigrep frog poem.txt`
+How public, like a frog
diff --git a/listings/ch12-an-io-project/no-listing-02-using-search-in-run/poem.txt b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/no-listing-02-using-search-in-run/src/lib.rs b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/src/lib.rs
new file mode 100644
index 00000000..79479827
--- /dev/null
+++ b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/src/lib.rs
@@ -0,0 +1,63 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+// ANCHOR: here
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    for line in search(&config.query, &contents) {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+// ANCHOR_END: here
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn one_result() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+}
diff --git a/listings/ch12-an-io-project/no-listing-02-using-search-in-run/src/main.rs b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/no-listing-02-using-search-in-run/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/output-only-01-with-args/Cargo.lock b/listings/ch12-an-io-project/output-only-01-with-args/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-01-with-args/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/output-only-01-with-args/Cargo.toml b/listings/ch12-an-io-project/output-only-01-with-args/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-01-with-args/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/output-only-01-with-args/output.txt b/listings/ch12-an-io-project/output-only-01-with-args/output.txt
new file mode 100644
index 00000000..eb88d9a9
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-01-with-args/output.txt
@@ -0,0 +1,5 @@
+$ cargo run needle haystack
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 1.57s
+     Running `target/debug/minigrep needle haystack`
+["target/debug/minigrep", "needle", "haystack"]
diff --git a/listings/ch12-an-io-project/output-only-01-with-args/src/main.rs b/listings/ch12-an-io-project/output-only-01-with-args/src/main.rs
new file mode 100644
index 00000000..aa3056de
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-01-with-args/src/main.rs
@@ -0,0 +1,6 @@
+use std::env;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+    println!("{:?}", args);
+}
diff --git a/listings/ch12-an-io-project/output-only-02-missing-lifetimes/Cargo.lock b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/output-only-02-missing-lifetimes/Cargo.toml b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/output-only-02-missing-lifetimes/output.txt b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/output.txt
new file mode 100644
index 00000000..d3bdcbc3
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/output.txt
@@ -0,0 +1,16 @@
+$ cargo build
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+error[E0106]: missing lifetime specifier
+  --> src/lib.rs:28:51
+   |
+28 | pub fn search(query: &str, contents: &str) -> Vec<&str> {
+   |                                                   ^ expected lifetime parameter
+   |
+   = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from `query` or `contents`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0106`.
+error: Could not compile `minigrep`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch12-an-io-project/output-only-02-missing-lifetimes/poem.txt b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/output-only-02-missing-lifetimes/src/lib.rs b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/src/lib.rs
new file mode 100644
index 00000000..8a12ac2f
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/src/lib.rs
@@ -0,0 +1,53 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    Ok(())
+}
+
+// ANCHOR: here
+pub fn search(query: &str, contents: &str) -> Vec<&str> {
+    vec![]
+}
+// ANCHOR_END: here
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn one_result() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+}
+
+fn main() {}
diff --git a/listings/ch12-an-io-project/output-only-02-missing-lifetimes/src/main.rs b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/output-only-03-multiple-matches/Cargo.lock b/listings/ch12-an-io-project/output-only-03-multiple-matches/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-03-multiple-matches/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/output-only-03-multiple-matches/Cargo.toml b/listings/ch12-an-io-project/output-only-03-multiple-matches/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-03-multiple-matches/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/output-only-03-multiple-matches/output.txt b/listings/ch12-an-io-project/output-only-03-multiple-matches/output.txt
new file mode 100644
index 00000000..c0ab7efd
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-03-multiple-matches/output.txt
@@ -0,0 +1,7 @@
+$ cargo run body poem.txt
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
+     Running `target/debug/minigrep body poem.txt`
+I’m nobody! Who are you?
+Are you nobody, too?
+How dreary to be somebody!
diff --git a/listings/ch12-an-io-project/output-only-03-multiple-matches/poem.txt b/listings/ch12-an-io-project/output-only-03-multiple-matches/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-03-multiple-matches/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/output-only-03-multiple-matches/src/lib.rs b/listings/ch12-an-io-project/output-only-03-multiple-matches/src/lib.rs
new file mode 100644
index 00000000..79479827
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-03-multiple-matches/src/lib.rs
@@ -0,0 +1,63 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+// ANCHOR: here
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    for line in search(&config.query, &contents) {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+// ANCHOR_END: here
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn one_result() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+}
diff --git a/listings/ch12-an-io-project/output-only-03-multiple-matches/src/main.rs b/listings/ch12-an-io-project/output-only-03-multiple-matches/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-03-multiple-matches/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch12-an-io-project/output-only-04-no-matches/Cargo.lock b/listings/ch12-an-io-project/output-only-04-no-matches/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-04-no-matches/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch12-an-io-project/output-only-04-no-matches/Cargo.toml b/listings/ch12-an-io-project/output-only-04-no-matches/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-04-no-matches/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch12-an-io-project/output-only-04-no-matches/output.txt b/listings/ch12-an-io-project/output-only-04-no-matches/output.txt
new file mode 100644
index 00000000..4cd6c8a0
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-04-no-matches/output.txt
@@ -0,0 +1,4 @@
+$ cargo run monomorphization poem.txt
+   Compiling minigrep v0.1.0 (file:///projects/minigrep)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
+     Running `target/debug/minigrep monomorphization poem.txt`
diff --git a/listings/ch12-an-io-project/output-only-04-no-matches/poem.txt b/listings/ch12-an-io-project/output-only-04-no-matches/poem.txt
new file mode 100644
index 00000000..208e35a5
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-04-no-matches/poem.txt
@@ -0,0 +1,9 @@
+I’m nobody! Who are you?
+Are you nobody, too?
+Then there’s a pair of us - don’t tell!
+They’d banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch12-an-io-project/output-only-04-no-matches/src/lib.rs b/listings/ch12-an-io-project/output-only-04-no-matches/src/lib.rs
new file mode 100644
index 00000000..79479827
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-04-no-matches/src/lib.rs
@@ -0,0 +1,63 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        Ok(Config { query, filename })
+    }
+}
+
+// ANCHOR: here
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    for line in search(&config.query, &contents) {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+// ANCHOR_END: here
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn one_result() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+}
diff --git a/listings/ch12-an-io-project/output-only-04-no-matches/src/main.rs b/listings/ch12-an-io-project/output-only-04-no-matches/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch12-an-io-project/output-only-04-no-matches/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch13-functional-features/listing-12-23-reproduced/Cargo.lock b/listings/ch13-functional-features/listing-12-23-reproduced/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch13-functional-features/listing-12-23-reproduced/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-12-23-reproduced/Cargo.toml b/listings/ch13-functional-features/listing-12-23-reproduced/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch13-functional-features/listing-12-23-reproduced/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-12-23-reproduced/poem.txt b/listings/ch13-functional-features/listing-12-23-reproduced/poem.txt
new file mode 100644
index 00000000..87075273
--- /dev/null
+++ b/listings/ch13-functional-features/listing-12-23-reproduced/poem.txt
@@ -0,0 +1,9 @@
+I'm nobody! Who are you?
+Are you nobody, too?
+Then there's a pair of us - don't tell!
+They'd banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch13-functional-features/listing-12-23-reproduced/src/lib.rs b/listings/ch13-functional-features/listing-12-23-reproduced/src/lib.rs
new file mode 100644
index 00000000..936aeac2
--- /dev/null
+++ b/listings/ch13-functional-features/listing-12-23-reproduced/src/lib.rs
@@ -0,0 +1,104 @@
+use std::env;
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+    pub case_sensitive: bool,
+}
+
+// ANCHOR: ch13
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        let case_sensitive = env::var("CASE_INSENSITIVE").is_err();
+
+        Ok(Config { query, filename, case_sensitive })
+    }
+}
+// ANCHOR_END: ch13
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    let results = if config.case_sensitive {
+        search(&config.query, &contents)
+    } else {
+        search_case_insensitive(&config.query, &contents)
+    };
+
+    for line in results {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let query = query.to_lowercase();
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.to_lowercase().contains(&query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn case_sensitive() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Duct tape.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+
+    #[test]
+    fn case_insensitive() {
+        let query = "rUsT";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Trust me.";
+
+        assert_eq!(
+            vec!["Rust:", "Trust me."],
+            search_case_insensitive(query, contents)
+        );
+    }
+}
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-12-23-reproduced/src/main.rs b/listings/ch13-functional-features/listing-12-23-reproduced/src/main.rs
new file mode 100644
index 00000000..53af83fd
--- /dev/null
+++ b/listings/ch13-functional-features/listing-12-23-reproduced/src/main.rs
@@ -0,0 +1,19 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        println!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch13-functional-features/listing-12-24-reproduced/Cargo.lock b/listings/ch13-functional-features/listing-12-24-reproduced/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch13-functional-features/listing-12-24-reproduced/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-12-24-reproduced/Cargo.toml b/listings/ch13-functional-features/listing-12-24-reproduced/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch13-functional-features/listing-12-24-reproduced/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-12-24-reproduced/poem.txt b/listings/ch13-functional-features/listing-12-24-reproduced/poem.txt
new file mode 100644
index 00000000..87075273
--- /dev/null
+++ b/listings/ch13-functional-features/listing-12-24-reproduced/poem.txt
@@ -0,0 +1,9 @@
+I'm nobody! Who are you?
+Are you nobody, too?
+Then there's a pair of us - don't tell!
+They'd banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch13-functional-features/listing-12-24-reproduced/src/lib.rs b/listings/ch13-functional-features/listing-12-24-reproduced/src/lib.rs
new file mode 100644
index 00000000..10792052
--- /dev/null
+++ b/listings/ch13-functional-features/listing-12-24-reproduced/src/lib.rs
@@ -0,0 +1,100 @@
+use std::env;
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+    pub case_sensitive: bool,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        let case_sensitive = env::var("CASE_INSENSITIVE").is_err();
+
+        Ok(Config { query, filename, case_sensitive })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    let results = if config.case_sensitive {
+        search(&config.query, &contents)
+    } else {
+        search_case_insensitive(&config.query, &contents)
+    };
+
+    for line in results {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let query = query.to_lowercase();
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.to_lowercase().contains(&query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn case_sensitive() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Duct tape.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+
+    #[test]
+    fn case_insensitive() {
+        let query = "rUsT";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Trust me.";
+
+        assert_eq!(
+            vec!["Rust:", "Trust me."],
+            search_case_insensitive(query, contents)
+        );
+    }
+}
diff --git a/listings/ch13-functional-features/listing-12-24-reproduced/src/main.rs b/listings/ch13-functional-features/listing-12-24-reproduced/src/main.rs
new file mode 100644
index 00000000..ec27e67f
--- /dev/null
+++ b/listings/ch13-functional-features/listing-12-24-reproduced/src/main.rs
@@ -0,0 +1,25 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+// ANCHOR: ch13
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    let config = Config::new(&args).unwrap_or_else(|err| {
+        eprintln!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    // --snip--
+    // ANCHOR_END: ch13
+
+    if let Err(e) = minigrep::run(config) {
+        eprintln!("Application error: {}", e);
+
+        process::exit(1);
+    }
+    // ANCHOR: ch13
+}
+// ANCHOR_END: ch13
diff --git a/listings/ch13-functional-features/listing-13-01/Cargo.toml b/listings/ch13-functional-features/listing-13-01/Cargo.toml
new file mode 100644
index 00000000..8e64540e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "workout-app"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-01/src/main.rs b/listings/ch13-functional-features/listing-13-01/src/main.rs
new file mode 100644
index 00000000..97eace01
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-01/src/main.rs
@@ -0,0 +1,12 @@
+// ANCHOR: here
+use std::thread;
+use std::time::Duration;
+
+fn simulated_expensive_calculation(intensity: u32) -> u32 {
+    println!("calculating slowly...");
+    thread::sleep(Duration::from_secs(2));
+    intensity
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-13-02/Cargo.lock b/listings/ch13-functional-features/listing-13-02/Cargo.lock
new file mode 100644
index 00000000..f2ba2742
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "workout-app"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-02/Cargo.toml b/listings/ch13-functional-features/listing-13-02/Cargo.toml
new file mode 100644
index 00000000..8e64540e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "workout-app"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-02/src/main.rs b/listings/ch13-functional-features/listing-13-02/src/main.rs
new file mode 100644
index 00000000..30827264
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-02/src/main.rs
@@ -0,0 +1,22 @@
+use std::thread;
+use std::time::Duration;
+
+fn simulated_expensive_calculation(intensity: u32) -> u32 {
+    println!("calculating slowly...");
+    thread::sleep(Duration::from_secs(2));
+    intensity
+}
+
+fn generate_workout(intensity: u32, random_number: u32) {}
+
+// ANCHOR: here
+fn main() {
+    let simulated_user_specified_value = 10;
+    let simulated_random_number = 7;
+
+    generate_workout(
+        simulated_user_specified_value,
+        simulated_random_number
+    );
+}
+// ANCHOR_END: here
diff --git a/listings/ch13-functional-features/listing-13-03/Cargo.lock b/listings/ch13-functional-features/listing-13-03/Cargo.lock
new file mode 100644
index 00000000..f2ba2742
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "workout-app"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-03/Cargo.toml b/listings/ch13-functional-features/listing-13-03/Cargo.toml
new file mode 100644
index 00000000..8e64540e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "workout-app"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-03/src/main.rs b/listings/ch13-functional-features/listing-13-03/src/main.rs
new file mode 100644
index 00000000..509f98cb
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-03/src/main.rs
@@ -0,0 +1,42 @@
+use std::thread;
+use std::time::Duration;
+
+fn simulated_expensive_calculation(intensity: u32) -> u32 {
+    println!("calculating slowly...");
+    thread::sleep(Duration::from_secs(2));
+    intensity
+}
+
+// ANCHOR: here
+fn generate_workout(intensity: u32, random_number: u32) {
+    if intensity < 25 {
+        println!(
+            "Today, do {} pushups!",
+            simulated_expensive_calculation(intensity)
+        );
+        println!(
+            "Next, do {} situps!",
+            simulated_expensive_calculation(intensity)
+        );
+    } else {
+        if random_number == 3 {
+            println!("Take a break today! Remember to stay hydrated!");
+        } else {
+            println!(
+                "Today, run for {} minutes!",
+                simulated_expensive_calculation(intensity)
+            );
+        }
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let simulated_user_specified_value = 10;
+    let simulated_random_number = 7;
+
+    generate_workout(
+        simulated_user_specified_value,
+        simulated_random_number
+    );
+}
diff --git a/listings/ch13-functional-features/listing-13-04/Cargo.lock b/listings/ch13-functional-features/listing-13-04/Cargo.lock
new file mode 100644
index 00000000..f2ba2742
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "workout-app"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-04/Cargo.toml b/listings/ch13-functional-features/listing-13-04/Cargo.toml
new file mode 100644
index 00000000..8e64540e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "workout-app"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-04/src/main.rs b/listings/ch13-functional-features/listing-13-04/src/main.rs
new file mode 100644
index 00000000..95deed3f
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-04/src/main.rs
@@ -0,0 +1,45 @@
+use std::thread;
+use std::time::Duration;
+
+fn simulated_expensive_calculation(intensity: u32) -> u32 {
+    println!("calculating slowly...");
+    thread::sleep(Duration::from_secs(2));
+    intensity
+}
+
+// ANCHOR: here
+fn generate_workout(intensity: u32, random_number: u32) {
+    let expensive_result =
+        simulated_expensive_calculation(intensity);
+
+    if intensity < 25 {
+        println!(
+            "Today, do {} pushups!",
+            expensive_result
+        );
+        println!(
+            "Next, do {} situps!",
+            expensive_result
+        );
+    } else {
+        if random_number == 3 {
+            println!("Take a break today! Remember to stay hydrated!");
+        } else {
+            println!(
+                "Today, run for {} minutes!",
+                expensive_result
+            );
+        }
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let simulated_user_specified_value = 10;
+    let simulated_random_number = 7;
+
+    generate_workout(
+        simulated_user_specified_value,
+        simulated_random_number
+    );
+}
diff --git a/listings/ch13-functional-features/listing-13-05/Cargo.lock b/listings/ch13-functional-features/listing-13-05/Cargo.lock
new file mode 100644
index 00000000..f2ba2742
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "workout-app"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-05/Cargo.toml b/listings/ch13-functional-features/listing-13-05/Cargo.toml
new file mode 100644
index 00000000..8e64540e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "workout-app"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-05/src/main.rs b/listings/ch13-functional-features/listing-13-05/src/main.rs
new file mode 100644
index 00000000..c30eff59
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-05/src/main.rs
@@ -0,0 +1,42 @@
+use std::thread;
+use std::time::Duration;
+
+fn generate_workout(intensity: u32, random_number: u32) {
+    // ANCHOR: here
+    let expensive_closure = |num| {
+        println!("calculating slowly...");
+        thread::sleep(Duration::from_secs(2));
+        num
+    };
+    // ANCHOR_END: here
+
+    if intensity < 25 {
+        println!(
+            "Today, do {} pushups!",
+            expensive_closure(intensity)
+        );
+        println!(
+            "Next, do {} situps!",
+            expensive_closure(intensity)
+        );
+    } else {
+        if random_number == 3 {
+            println!("Take a break today! Remember to stay hydrated!");
+        } else {
+            println!(
+                "Today, run for {} minutes!",
+                expensive_closure(intensity)
+            );
+        }
+    }
+}
+
+fn main() {
+    let simulated_user_specified_value = 10;
+    let simulated_random_number = 7;
+
+    generate_workout(
+        simulated_user_specified_value,
+        simulated_random_number
+    );
+}
diff --git a/listings/ch13-functional-features/listing-13-06/Cargo.lock b/listings/ch13-functional-features/listing-13-06/Cargo.lock
new file mode 100644
index 00000000..f2ba2742
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "workout-app"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-06/Cargo.toml b/listings/ch13-functional-features/listing-13-06/Cargo.toml
new file mode 100644
index 00000000..8e64540e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "workout-app"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-06/src/main.rs b/listings/ch13-functional-features/listing-13-06/src/main.rs
new file mode 100644
index 00000000..66c2e770
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-06/src/main.rs
@@ -0,0 +1,42 @@
+use std::thread;
+use std::time::Duration;
+
+// ANCHOR: here
+fn generate_workout(intensity: u32, random_number: u32) {
+    let expensive_closure = |num| {
+        println!("calculating slowly...");
+        thread::sleep(Duration::from_secs(2));
+        num
+    };
+
+    if intensity < 25 {
+        println!(
+            "Today, do {} pushups!",
+            expensive_closure(intensity)
+        );
+        println!(
+            "Next, do {} situps!",
+            expensive_closure(intensity)
+        );
+    } else {
+        if random_number == 3 {
+            println!("Take a break today! Remember to stay hydrated!");
+        } else {
+            println!(
+                "Today, run for {} minutes!",
+                expensive_closure(intensity)
+            );
+        }
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let simulated_user_specified_value = 10;
+    let simulated_random_number = 7;
+
+    generate_workout(
+        simulated_user_specified_value,
+        simulated_random_number
+    );
+}
diff --git a/listings/ch13-functional-features/listing-13-07/Cargo.lock b/listings/ch13-functional-features/listing-13-07/Cargo.lock
new file mode 100644
index 00000000..f2ba2742
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "workout-app"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-07/Cargo.toml b/listings/ch13-functional-features/listing-13-07/Cargo.toml
new file mode 100644
index 00000000..8e64540e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "workout-app"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-07/src/main.rs b/listings/ch13-functional-features/listing-13-07/src/main.rs
new file mode 100644
index 00000000..70e3c438
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-07/src/main.rs
@@ -0,0 +1,42 @@
+use std::thread;
+use std::time::Duration;
+
+fn generate_workout(intensity: u32, random_number: u32) {
+    // ANCHOR: here
+    let expensive_closure = |num: u32| -> u32 {
+        println!("calculating slowly...");
+        thread::sleep(Duration::from_secs(2));
+        num
+    };
+    // ANCHOR_END: here
+
+    if intensity < 25 {
+        println!(
+            "Today, do {} pushups!",
+            expensive_closure(intensity)
+        );
+        println!(
+            "Next, do {} situps!",
+            expensive_closure(intensity)
+        );
+    } else {
+        if random_number == 3 {
+            println!("Take a break today! Remember to stay hydrated!");
+        } else {
+            println!(
+                "Today, run for {} minutes!",
+                expensive_closure(intensity)
+            );
+        }
+    }
+}
+
+fn main() {
+    let simulated_user_specified_value = 10;
+    let simulated_random_number = 7;
+
+    generate_workout(
+        simulated_user_specified_value,
+        simulated_random_number
+    );
+}
diff --git a/listings/ch13-functional-features/listing-13-08/Cargo.lock b/listings/ch13-functional-features/listing-13-08/Cargo.lock
new file mode 100644
index 00000000..f38db09f
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "closure-example"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-08/Cargo.toml b/listings/ch13-functional-features/listing-13-08/Cargo.toml
new file mode 100644
index 00000000..54b904e4
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "closure-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-08/output.txt b/listings/ch13-functional-features/listing-13-08/output.txt
new file mode 100644
index 00000000..df271575
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-08/output.txt
@@ -0,0 +1,20 @@
+$ cargo run
+   Compiling closure-example v0.1.0 (file:///projects/closure-example)
+error[E0308]: mismatched types
+ --> src/main.rs:5:29
+  |
+5 |     let n = example_closure(5);
+  |                             ^
+  |                             |
+  |                             expected struct `std::string::String`, found integer
+  |                             help: try using a conversion method: `5.to_string()`
+  |
+  = note: expected type `std::string::String`
+             found type `{integer}`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
+error: Could not compile `closure-example`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch13-functional-features/listing-13-08/src/main.rs b/listings/ch13-functional-features/listing-13-08/src/main.rs
new file mode 100644
index 00000000..ebb2489b
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-08/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let example_closure = |x| x;
+
+    let s = example_closure(String::from("hello"));
+    let n = example_closure(5);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch13-functional-features/listing-13-09/Cargo.lock b/listings/ch13-functional-features/listing-13-09/Cargo.lock
new file mode 100644
index 00000000..d42a3257
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cacher"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-09/Cargo.toml b/listings/ch13-functional-features/listing-13-09/Cargo.toml
new file mode 100644
index 00000000..54ab6f21
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cacher"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-09/src/main.rs b/listings/ch13-functional-features/listing-13-09/src/main.rs
new file mode 100644
index 00000000..79be866c
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-09/src/main.rs
@@ -0,0 +1,10 @@
+// ANCHOR: here
+struct Cacher<T>
+    where T: Fn(u32) -> u32
+{
+    calculation: T,
+    value: Option<u32>,
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-13-10/Cargo.lock b/listings/ch13-functional-features/listing-13-10/Cargo.lock
new file mode 100644
index 00000000..d42a3257
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cacher"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-10/Cargo.toml b/listings/ch13-functional-features/listing-13-10/Cargo.toml
new file mode 100644
index 00000000..54ab6f21
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cacher"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-10/src/main.rs b/listings/ch13-functional-features/listing-13-10/src/main.rs
new file mode 100644
index 00000000..29f47ac1
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-10/src/main.rs
@@ -0,0 +1,32 @@
+struct Cacher<T>
+    where T: Fn(u32) -> u32
+{
+    calculation: T,
+    value: Option<u32>,
+}
+
+// ANCHOR: here
+impl<T> Cacher<T>
+    where T: Fn(u32) -> u32
+{
+    fn new(calculation: T) -> Cacher<T> {
+        Cacher {
+            calculation,
+            value: None,
+        }
+    }
+
+    fn value(&mut self, arg: u32) -> u32 {
+        match self.value {
+            Some(v) => v,
+            None => {
+                let v = (self.calculation)(arg);
+                self.value = Some(v);
+                v
+            },
+        }
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-13-11/Cargo.lock b/listings/ch13-functional-features/listing-13-11/Cargo.lock
new file mode 100644
index 00000000..f2ba2742
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "workout-app"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-11/Cargo.toml b/listings/ch13-functional-features/listing-13-11/Cargo.toml
new file mode 100644
index 00000000..8e64540e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "workout-app"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-11/src/main.rs b/listings/ch13-functional-features/listing-13-11/src/main.rs
new file mode 100644
index 00000000..45cf2fbe
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-11/src/main.rs
@@ -0,0 +1,71 @@
+use std::thread;
+use std::time::Duration;
+
+struct Cacher<T>
+    where T: Fn(u32) -> u32
+{
+    calculation: T,
+    value: Option<u32>,
+}
+
+impl<T> Cacher<T>
+    where T: Fn(u32) -> u32
+{
+    fn new(calculation: T) -> Cacher<T> {
+        Cacher {
+            calculation,
+            value: None,
+        }
+    }
+
+    fn value(&mut self, arg: u32) -> u32 {
+        match self.value {
+            Some(v) => v,
+            None => {
+                let v = (self.calculation)(arg);
+                self.value = Some(v);
+                v
+            },
+        }
+    }
+}
+
+// ANCHOR: here
+fn generate_workout(intensity: u32, random_number: u32) {
+    let mut expensive_result = Cacher::new(|num| {
+        println!("calculating slowly...");
+        thread::sleep(Duration::from_secs(2));
+        num
+    });
+
+    if intensity < 25 {
+        println!(
+            "Today, do {} pushups!",
+            expensive_result.value(intensity)
+        );
+        println!(
+            "Next, do {} situps!",
+            expensive_result.value(intensity)
+        );
+    } else {
+        if random_number == 3 {
+            println!("Take a break today! Remember to stay hydrated!");
+        } else {
+            println!(
+                "Today, run for {} minutes!",
+                expensive_result.value(intensity)
+            );
+        }
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let simulated_user_specified_value = 10;
+    let simulated_random_number = 7;
+
+    generate_workout(
+        simulated_user_specified_value,
+        simulated_random_number
+    );
+}
diff --git a/listings/ch13-functional-features/listing-13-12/Cargo.lock b/listings/ch13-functional-features/listing-13-12/Cargo.lock
new file mode 100644
index 00000000..f46a603e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "equal-to-x"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-12/Cargo.toml b/listings/ch13-functional-features/listing-13-12/Cargo.toml
new file mode 100644
index 00000000..4fd5d852
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "equal-to-x"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-12/src/main.rs b/listings/ch13-functional-features/listing-13-12/src/main.rs
new file mode 100644
index 00000000..7352b80b
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-12/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let x = 4;
+
+    let equal_to_x = |z| z == x;
+
+    let y = 4;
+
+    assert!(equal_to_x(y));
+}
diff --git a/listings/ch13-functional-features/listing-13-13/Cargo.lock b/listings/ch13-functional-features/listing-13-13/Cargo.lock
new file mode 100644
index 00000000..2e7cf8a4
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "iterators"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-13/Cargo.toml b/listings/ch13-functional-features/listing-13-13/Cargo.toml
new file mode 100644
index 00000000..015f9512
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "iterators"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-13/src/main.rs b/listings/ch13-functional-features/listing-13-13/src/main.rs
new file mode 100644
index 00000000..55a0dd37
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-13/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    // ANCHOR: here
+    let v1 = vec![1, 2, 3];
+
+    let v1_iter = v1.iter();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch13-functional-features/listing-13-14/Cargo.lock b/listings/ch13-functional-features/listing-13-14/Cargo.lock
new file mode 100644
index 00000000..2e7cf8a4
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "iterators"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-14/Cargo.toml b/listings/ch13-functional-features/listing-13-14/Cargo.toml
new file mode 100644
index 00000000..015f9512
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "iterators"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-14/src/main.rs b/listings/ch13-functional-features/listing-13-14/src/main.rs
new file mode 100644
index 00000000..712aff40
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-14/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // ANCHOR: here
+    let v1 = vec![1, 2, 3];
+
+    let v1_iter = v1.iter();
+
+    for val in v1_iter {
+        println!("Got: {}", val);
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch13-functional-features/listing-13-15/Cargo.lock b/listings/ch13-functional-features/listing-13-15/Cargo.lock
new file mode 100644
index 00000000..2e7cf8a4
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "iterators"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-15/Cargo.toml b/listings/ch13-functional-features/listing-13-15/Cargo.toml
new file mode 100644
index 00000000..015f9512
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "iterators"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-15/src/lib.rs b/listings/ch13-functional-features/listing-13-15/src/lib.rs
new file mode 100644
index 00000000..afea80d2
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-15/src/lib.rs
@@ -0,0 +1,18 @@
+#[cfg(test)]
+mod tests {
+    // ANCHOR: here
+    #[test]
+    fn iterator_demonstration() {
+        let v1 = vec![1, 2, 3];
+
+        let mut v1_iter = v1.iter();
+
+        assert_eq!(v1_iter.next(), Some(&1));
+        assert_eq!(v1_iter.next(), Some(&2));
+        assert_eq!(v1_iter.next(), Some(&3));
+        assert_eq!(v1_iter.next(), None);
+    }
+    // ANCHOR_END: here
+}
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-13-16/Cargo.lock b/listings/ch13-functional-features/listing-13-16/Cargo.lock
new file mode 100644
index 00000000..2e7cf8a4
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-16/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "iterators"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-16/Cargo.toml b/listings/ch13-functional-features/listing-13-16/Cargo.toml
new file mode 100644
index 00000000..015f9512
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-16/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "iterators"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-16/src/lib.rs b/listings/ch13-functional-features/listing-13-16/src/lib.rs
new file mode 100644
index 00000000..198b3c83
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-16/src/lib.rs
@@ -0,0 +1,17 @@
+#[cfg(test)]
+mod tests {
+    // ANCHOR: here
+    #[test]
+    fn iterator_sum() {
+        let v1 = vec![1, 2, 3];
+
+        let v1_iter = v1.iter();
+
+        let total: i32 = v1_iter.sum();
+
+        assert_eq!(total, 6);
+    }
+    // ANCHOR_END: here
+}
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-13-17/Cargo.lock b/listings/ch13-functional-features/listing-13-17/Cargo.lock
new file mode 100644
index 00000000..2e7cf8a4
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-17/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "iterators"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-17/Cargo.toml b/listings/ch13-functional-features/listing-13-17/Cargo.toml
new file mode 100644
index 00000000..015f9512
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-17/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "iterators"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-17/output.txt b/listings/ch13-functional-features/listing-13-17/output.txt
new file mode 100644
index 00000000..dcf903d5
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-17/output.txt
@@ -0,0 +1,13 @@
+$ cargo run
+   Compiling iterators v0.1.0 (file:///projects/iterators)
+warning: unused `std::iter::Map` that must be used
+ --> src/main.rs:4:5
+  |
+4 |     v1.iter().map(|x| x + 1);
+  |     ^^^^^^^^^^^^^^^^^^^^^^^^^
+  |
+  = note: #[warn(unused_must_use)] on by default
+  = note: iterators are lazy and do nothing unless consumed
+
+    Finished dev [unoptimized + debuginfo] target(s) in 0.47s
+     Running `target/debug/iterators`
diff --git a/listings/ch13-functional-features/listing-13-17/src/main.rs b/listings/ch13-functional-features/listing-13-17/src/main.rs
new file mode 100644
index 00000000..62a68be9
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-17/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    // ANCHOR: here
+    let v1: Vec<i32> = vec![1, 2, 3];
+
+    v1.iter().map(|x| x + 1);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch13-functional-features/listing-13-18/Cargo.lock b/listings/ch13-functional-features/listing-13-18/Cargo.lock
new file mode 100644
index 00000000..2e7cf8a4
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-18/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "iterators"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-18/Cargo.toml b/listings/ch13-functional-features/listing-13-18/Cargo.toml
new file mode 100644
index 00000000..015f9512
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-18/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "iterators"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-18/src/main.rs b/listings/ch13-functional-features/listing-13-18/src/main.rs
new file mode 100644
index 00000000..db9025d6
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-18/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    let v1: Vec<i32> = vec![1, 2, 3];
+
+    let v2: Vec<_> = v1.iter().map(|x| x + 1).collect();
+
+    assert_eq!(v2, vec![2, 3, 4]);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch13-functional-features/listing-13-19/Cargo.lock b/listings/ch13-functional-features/listing-13-19/Cargo.lock
new file mode 100644
index 00000000..f5ca1b91
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-19/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "shoe_size"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-19/Cargo.toml b/listings/ch13-functional-features/listing-13-19/Cargo.toml
new file mode 100644
index 00000000..d0ecdac6
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-19/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "shoe_size"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-19/src/lib.rs b/listings/ch13-functional-features/listing-13-19/src/lib.rs
new file mode 100644
index 00000000..a8b5cb55
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-19/src/lib.rs
@@ -0,0 +1,37 @@
+#[derive(PartialEq, Debug)]
+struct Shoe {
+    size: u32,
+    style: String,
+}
+
+fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
+    shoes.into_iter()
+        .filter(|s| s.size == shoe_size)
+        .collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn filters_by_size() {
+        let shoes = vec![
+            Shoe { size: 10, style: String::from("sneaker") },
+            Shoe { size: 13, style: String::from("sandal") },
+            Shoe { size: 10, style: String::from("boot") },
+        ];
+
+        let in_my_size = shoes_in_my_size(shoes, 10);
+
+        assert_eq!(
+            in_my_size,
+            vec![
+                Shoe { size: 10, style: String::from("sneaker") },
+                Shoe { size: 10, style: String::from("boot") },
+            ]
+        );
+    }
+}
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-13-20/Cargo.lock b/listings/ch13-functional-features/listing-13-20/Cargo.lock
new file mode 100644
index 00000000..da4124d8
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-20/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "counter"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-20/Cargo.toml b/listings/ch13-functional-features/listing-13-20/Cargo.toml
new file mode 100644
index 00000000..4eb29e80
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-20/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "counter"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-20/src/lib.rs b/listings/ch13-functional-features/listing-13-20/src/lib.rs
new file mode 100644
index 00000000..897804c4
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-20/src/lib.rs
@@ -0,0 +1,11 @@
+struct Counter {
+    count: u32,
+}
+
+impl Counter {
+    fn new() -> Counter {
+        Counter { count: 0 }
+    }
+}
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-13-21/Cargo.lock b/listings/ch13-functional-features/listing-13-21/Cargo.lock
new file mode 100644
index 00000000..da4124d8
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-21/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "counter"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-21/Cargo.toml b/listings/ch13-functional-features/listing-13-21/Cargo.toml
new file mode 100644
index 00000000..4eb29e80
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-21/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "counter"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-21/src/lib.rs b/listings/ch13-functional-features/listing-13-21/src/lib.rs
new file mode 100644
index 00000000..76de1b7a
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-21/src/lib.rs
@@ -0,0 +1,27 @@
+struct Counter {
+    count: u32,
+}
+
+impl Counter {
+    fn new() -> Counter {
+        Counter { count: 0 }
+    }
+}
+
+// ANCHOR: here
+impl Iterator for Counter {
+    type Item = u32;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        self.count += 1;
+
+        if self.count < 6 {
+            Some(self.count)
+        } else {
+            None
+        }
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-13-22/Cargo.lock b/listings/ch13-functional-features/listing-13-22/Cargo.lock
new file mode 100644
index 00000000..da4124d8
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-22/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "counter"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-22/Cargo.toml b/listings/ch13-functional-features/listing-13-22/Cargo.toml
new file mode 100644
index 00000000..4eb29e80
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-22/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "counter"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-22/src/lib.rs b/listings/ch13-functional-features/listing-13-22/src/lib.rs
new file mode 100644
index 00000000..0b85a9e6
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-22/src/lib.rs
@@ -0,0 +1,44 @@
+struct Counter {
+    count: u32,
+}
+
+impl Counter {
+    fn new() -> Counter {
+        Counter { count: 0 }
+    }
+}
+
+impl Iterator for Counter {
+    type Item = u32;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        self.count += 1;
+
+        if self.count < 6 {
+            Some(self.count)
+        } else {
+            None
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // ANCHOR: here
+    #[test]
+    fn calling_next_directly() {
+        let mut counter = Counter::new();
+
+        assert_eq!(counter.next(), Some(1));
+        assert_eq!(counter.next(), Some(2));
+        assert_eq!(counter.next(), Some(3));
+        assert_eq!(counter.next(), Some(4));
+        assert_eq!(counter.next(), Some(5));
+        assert_eq!(counter.next(), None);
+    }
+    // ANCHOR_END: here
+}
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-13-23/Cargo.lock b/listings/ch13-functional-features/listing-13-23/Cargo.lock
new file mode 100644
index 00000000..da4124d8
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-23/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "counter"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-23/Cargo.toml b/listings/ch13-functional-features/listing-13-23/Cargo.toml
new file mode 100644
index 00000000..4eb29e80
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-23/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "counter"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-23/src/lib.rs b/listings/ch13-functional-features/listing-13-23/src/lib.rs
new file mode 100644
index 00000000..ec8593bb
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-23/src/lib.rs
@@ -0,0 +1,53 @@
+struct Counter {
+    count: u32,
+}
+
+impl Counter {
+    fn new() -> Counter {
+        Counter { count: 0 }
+    }
+}
+
+impl Iterator for Counter {
+    type Item = u32;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        self.count += 1;
+
+        if self.count < 6 {
+            Some(self.count)
+        } else {
+            None
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn calling_next_directly() {
+        let mut counter = Counter::new();
+
+        assert_eq!(counter.next(), Some(1));
+        assert_eq!(counter.next(), Some(2));
+        assert_eq!(counter.next(), Some(3));
+        assert_eq!(counter.next(), Some(4));
+        assert_eq!(counter.next(), Some(5));
+        assert_eq!(counter.next(), None);
+    }
+
+    // ANCHOR: here
+    #[test]
+    fn using_other_iterator_trait_methods() {
+        let sum: u32 = Counter::new().zip(Counter::new().skip(1))
+                                     .map(|(a, b)| a * b)
+                                     .filter(|x| x % 3 == 0)
+                                     .sum();
+        assert_eq!(18, sum);
+    }
+    // ANCHOR_END: here
+}
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-13-25/Cargo.lock b/listings/ch13-functional-features/listing-13-25/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-25/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-25/Cargo.toml b/listings/ch13-functional-features/listing-13-25/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-25/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-25/poem.txt b/listings/ch13-functional-features/listing-13-25/poem.txt
new file mode 100644
index 00000000..87075273
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-25/poem.txt
@@ -0,0 +1,9 @@
+I'm nobody! Who are you?
+Are you nobody, too?
+Then there's a pair of us - don't tell!
+They'd banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch13-functional-features/listing-13-25/src/lib.rs b/listings/ch13-functional-features/listing-13-25/src/lib.rs
new file mode 100644
index 00000000..10792052
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-25/src/lib.rs
@@ -0,0 +1,100 @@
+use std::env;
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+    pub case_sensitive: bool,
+}
+
+impl Config {
+    pub fn new(args: &[String]) -> Result<Config, &'static str> {
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        let case_sensitive = env::var("CASE_INSENSITIVE").is_err();
+
+        Ok(Config { query, filename, case_sensitive })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    let results = if config.case_sensitive {
+        search(&config.query, &contents)
+    } else {
+        search_case_insensitive(&config.query, &contents)
+    };
+
+    for line in results {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let query = query.to_lowercase();
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.to_lowercase().contains(&query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn case_sensitive() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Duct tape.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+
+    #[test]
+    fn case_insensitive() {
+        let query = "rUsT";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Trust me.";
+
+        assert_eq!(
+            vec!["Rust:", "Trust me."],
+            search_case_insensitive(query, contents)
+        );
+    }
+}
diff --git a/listings/ch13-functional-features/listing-13-25/src/main.rs b/listings/ch13-functional-features/listing-13-25/src/main.rs
new file mode 100644
index 00000000..d09966e4
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-25/src/main.rs
@@ -0,0 +1,23 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+// ANCHOR: here
+fn main() {
+    let config = Config::new(env::args()).unwrap_or_else(|err| {
+        eprintln!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    // --snip--
+    // ANCHOR_END: here
+
+    if let Err(e) = minigrep::run(config) {
+        eprintln!("Application error: {}", e);
+
+        process::exit(1);
+    }
+    // ANCHOR: here
+}
+// ANCHOR_END: here
diff --git a/listings/ch13-functional-features/listing-13-26/Cargo.lock b/listings/ch13-functional-features/listing-13-26/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-26/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-26/Cargo.toml b/listings/ch13-functional-features/listing-13-26/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-26/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-26/poem.txt b/listings/ch13-functional-features/listing-13-26/poem.txt
new file mode 100644
index 00000000..87075273
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-26/poem.txt
@@ -0,0 +1,9 @@
+I'm nobody! Who are you?
+Are you nobody, too?
+Then there's a pair of us - don't tell!
+They'd banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch13-functional-features/listing-13-26/src/lib.rs b/listings/ch13-functional-features/listing-13-26/src/lib.rs
new file mode 100644
index 00000000..e980f44e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-26/src/lib.rs
@@ -0,0 +1,103 @@
+use std::env;
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+    pub case_sensitive: bool,
+}
+
+// ANCHOR: here
+impl Config {
+    pub fn new(mut args: std::env::Args) -> Result<Config, &'static str> {
+        // --snip--
+        // ANCHOR_END: here
+        if args.len() < 3 {
+            return Err("not enough arguments");
+        }
+
+        let query = args[1].clone();
+        let filename = args[2].clone();
+
+        let case_sensitive = env::var("CASE_INSENSITIVE").is_err();
+
+        Ok(Config { query, filename, case_sensitive })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    let results = if config.case_sensitive {
+        search(&config.query, &contents)
+    } else {
+        search_case_insensitive(&config.query, &contents)
+    };
+
+    for line in results {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let query = query.to_lowercase();
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.to_lowercase().contains(&query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn case_sensitive() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Duct tape.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+
+    #[test]
+    fn case_insensitive() {
+        let query = "rUsT";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Trust me.";
+
+        assert_eq!(
+            vec!["Rust:", "Trust me."],
+            search_case_insensitive(query, contents)
+        );
+    }
+}
diff --git a/listings/ch13-functional-features/listing-13-26/src/main.rs b/listings/ch13-functional-features/listing-13-26/src/main.rs
new file mode 100644
index 00000000..06aac30e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-26/src/main.rs
@@ -0,0 +1,17 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let config = Config::new(env::args()).unwrap_or_else(|err| {
+        eprintln!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        eprintln!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch13-functional-features/listing-13-27/Cargo.lock b/listings/ch13-functional-features/listing-13-27/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-27/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-27/Cargo.toml b/listings/ch13-functional-features/listing-13-27/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-27/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-27/poem.txt b/listings/ch13-functional-features/listing-13-27/poem.txt
new file mode 100644
index 00000000..87075273
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-27/poem.txt
@@ -0,0 +1,9 @@
+I'm nobody! Who are you?
+Are you nobody, too?
+Then there's a pair of us - don't tell!
+They'd banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch13-functional-features/listing-13-27/src/lib.rs b/listings/ch13-functional-features/listing-13-27/src/lib.rs
new file mode 100644
index 00000000..b56edf51
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-27/src/lib.rs
@@ -0,0 +1,109 @@
+use std::env;
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+    pub case_sensitive: bool,
+}
+
+// ANCHOR: here
+impl Config {
+    pub fn new(mut args: std::env::Args) -> Result<Config, &'static str> {
+        args.next();
+
+        let query = match args.next() {
+            Some(arg) => arg,
+            None => return Err("Didn't get a query string"),
+        };
+
+        let filename = match args.next() {
+            Some(arg) => arg,
+            None => return Err("Didn't get a file name"),
+        };
+
+        let case_sensitive = env::var("CASE_INSENSITIVE").is_err();
+
+        Ok(Config { query, filename, case_sensitive })
+    }
+}
+// ANCHOR_END: here
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    let results = if config.case_sensitive {
+        search(&config.query, &contents)
+    } else {
+        search_case_insensitive(&config.query, &contents)
+    };
+
+    for line in results {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.contains(query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let query = query.to_lowercase();
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.to_lowercase().contains(&query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn case_sensitive() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Duct tape.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+
+    #[test]
+    fn case_insensitive() {
+        let query = "rUsT";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Trust me.";
+
+        assert_eq!(
+            vec!["Rust:", "Trust me."],
+            search_case_insensitive(query, contents)
+        );
+    }
+}
+
+fn main() {}
diff --git a/listings/ch13-functional-features/listing-13-27/src/main.rs b/listings/ch13-functional-features/listing-13-27/src/main.rs
new file mode 100644
index 00000000..06aac30e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-27/src/main.rs
@@ -0,0 +1,17 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let config = Config::new(env::args()).unwrap_or_else(|err| {
+        eprintln!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        eprintln!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch13-functional-features/listing-13-29/Cargo.lock b/listings/ch13-functional-features/listing-13-29/Cargo.lock
new file mode 100644
index 00000000..5b5afdd8
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-29/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "minigrep"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/listing-13-29/Cargo.toml b/listings/ch13-functional-features/listing-13-29/Cargo.toml
new file mode 100644
index 00000000..82606426
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-29/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "minigrep"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/listing-13-29/poem.txt b/listings/ch13-functional-features/listing-13-29/poem.txt
new file mode 100644
index 00000000..87075273
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-29/poem.txt
@@ -0,0 +1,9 @@
+I'm nobody! Who are you?
+Are you nobody, too?
+Then there's a pair of us - don't tell!
+They'd banish us, you know.
+
+How dreary to be somebody!
+How public, like a frog
+To tell your name the livelong day
+To an admiring bog!
diff --git a/listings/ch13-functional-features/listing-13-29/src/lib.rs b/listings/ch13-functional-features/listing-13-29/src/lib.rs
new file mode 100644
index 00000000..555d797f
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-29/src/lib.rs
@@ -0,0 +1,101 @@
+use std::env;
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+    pub case_sensitive: bool,
+}
+
+impl Config {
+    pub fn new(mut args: std::env::Args) -> Result<Config, &'static str> {
+        args.next();
+
+        let query = match args.next() {
+            Some(arg) => arg,
+            None => return Err("Didn't get a query string"),
+        };
+
+        let filename = match args.next() {
+            Some(arg) => arg,
+            None => return Err("Didn't get a file name"),
+        };
+
+        let case_sensitive = env::var("CASE_INSENSITIVE").is_err();
+
+        Ok(Config { query, filename, case_sensitive })
+    }
+}
+
+pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
+    let contents = fs::read_to_string(config.filename)?;
+
+    let results = if config.case_sensitive {
+        search(&config.query, &contents)
+    } else {
+        search_case_insensitive(&config.query, &contents)
+    };
+
+    for line in results {
+        println!("{}", line);
+    }
+
+    Ok(())
+}
+
+// ANCHOR: here
+pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    contents.lines()
+        .filter(|line| line.contains(query))
+        .collect()
+}
+// ANCHOR_END: here
+
+pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
+    let query = query.to_lowercase();
+    let mut results = Vec::new();
+
+    for line in contents.lines() {
+        if line.to_lowercase().contains(&query) {
+            results.push(line);
+        }
+    }
+
+    results
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn case_sensitive() {
+        let query = "duct";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Duct tape.";
+
+        assert_eq!(
+            vec!["safe, fast, productive."],
+            search(query, contents)
+        );
+    }
+
+    #[test]
+    fn case_insensitive() {
+        let query = "rUsT";
+        let contents = "\
+Rust:
+safe, fast, productive.
+Pick three.
+Trust me.";
+
+        assert_eq!(
+            vec!["Rust:", "Trust me."],
+            search_case_insensitive(query, contents)
+        );
+    }
+}
diff --git a/listings/ch13-functional-features/listing-13-29/src/main.rs b/listings/ch13-functional-features/listing-13-29/src/main.rs
new file mode 100644
index 00000000..06aac30e
--- /dev/null
+++ b/listings/ch13-functional-features/listing-13-29/src/main.rs
@@ -0,0 +1,17 @@
+use std::env;
+use std::process;
+
+use minigrep::Config;
+
+fn main() {
+    let config = Config::new(env::args()).unwrap_or_else(|err| {
+        eprintln!("Problem parsing arguments: {}", err);
+        process::exit(1);
+    });
+
+    if let Err(e) = minigrep::run(config) {
+        eprintln!("Application error: {}", e);
+
+        process::exit(1);
+    }
+}
diff --git a/listings/ch13-functional-features/no-listing-01-failing-cacher-test/Cargo.lock b/listings/ch13-functional-features/no-listing-01-failing-cacher-test/Cargo.lock
new file mode 100644
index 00000000..d42a3257
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-01-failing-cacher-test/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cacher"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/no-listing-01-failing-cacher-test/Cargo.toml b/listings/ch13-functional-features/no-listing-01-failing-cacher-test/Cargo.toml
new file mode 100644
index 00000000..54ab6f21
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-01-failing-cacher-test/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cacher"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/no-listing-01-failing-cacher-test/output.txt b/listings/ch13-functional-features/no-listing-01-failing-cacher-test/output.txt
new file mode 100644
index 00000000..096203fc
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-01-failing-cacher-test/output.txt
@@ -0,0 +1,23 @@
+$ cargo test
+   Compiling cacher v0.1.0 (file:///projects/cacher)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.61s
+     Running target/debug/deps/cacher-a6183d86a6fe7833
+
+running 1 test
+test tests::call_with_different_values ... FAILED
+
+failures:
+
+---- tests::call_with_different_values stdout ----
+thread 'main' panicked at 'assertion failed: `(left == right)`
+  left: `1`,
+ right: `2`', src/lib.rs:41:9
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+
+
+failures:
+    tests::call_with_different_values
+
+test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch13-functional-features/no-listing-01-failing-cacher-test/src/lib.rs b/listings/ch13-functional-features/no-listing-01-failing-cacher-test/src/lib.rs
new file mode 100644
index 00000000..4ec6d9bf
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-01-failing-cacher-test/src/lib.rs
@@ -0,0 +1,45 @@
+struct Cacher<T>
+    where T: Fn(u32) -> u32
+{
+    calculation: T,
+    value: Option<u32>,
+}
+
+impl<T> Cacher<T>
+    where T: Fn(u32) -> u32
+{
+    fn new(calculation: T) -> Cacher<T> {
+        Cacher {
+            calculation,
+            value: None,
+        }
+    }
+
+    fn value(&mut self, arg: u32) -> u32 {
+        match self.value {
+            Some(v) => v,
+            None => {
+                let v = (self.calculation)(arg);
+                self.value = Some(v);
+                v
+            },
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // ANCHOR: here
+    #[test]
+    fn call_with_different_values() {
+        let mut c = Cacher::new(|a| a);
+
+        let v1 = c.value(1);
+        let v2 = c.value(2);
+
+        assert_eq!(v2, 2);
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch13-functional-features/no-listing-02-functions-cant-capture/Cargo.lock b/listings/ch13-functional-features/no-listing-02-functions-cant-capture/Cargo.lock
new file mode 100644
index 00000000..f46a603e
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-02-functions-cant-capture/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "equal-to-x"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/no-listing-02-functions-cant-capture/Cargo.toml b/listings/ch13-functional-features/no-listing-02-functions-cant-capture/Cargo.toml
new file mode 100644
index 00000000..4fd5d852
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-02-functions-cant-capture/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "equal-to-x"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/no-listing-02-functions-cant-capture/output.txt b/listings/ch13-functional-features/no-listing-02-functions-cant-capture/output.txt
new file mode 100644
index 00000000..27886a95
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-02-functions-cant-capture/output.txt
@@ -0,0 +1,16 @@
+$ cargo run
+   Compiling equal-to-x v0.1.0 (file:///projects/equal-to-x)
+error[E0434]: can't capture dynamic environment in a fn item
+ --> src/main.rs:4:42
+  |
+4 |     fn equal_to_x(z: i32) -> bool { z == x }
+  |                                          ^
+  |
+  = help: use the `|| { ... }` closure form instead
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0434`.
+error: Could not compile `equal-to-x`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch13-functional-features/no-listing-02-functions-cant-capture/src/main.rs b/listings/ch13-functional-features/no-listing-02-functions-cant-capture/src/main.rs
new file mode 100644
index 00000000..032ecc88
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-02-functions-cant-capture/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let x = 4;
+
+    fn equal_to_x(z: i32) -> bool { z == x }
+
+    let y = 4;
+
+    assert!(equal_to_x(y));
+}
diff --git a/listings/ch13-functional-features/no-listing-03-move-closures/Cargo.lock b/listings/ch13-functional-features/no-listing-03-move-closures/Cargo.lock
new file mode 100644
index 00000000..f46a603e
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-03-move-closures/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "equal-to-x"
+version = "0.1.0"
+
diff --git a/listings/ch13-functional-features/no-listing-03-move-closures/Cargo.toml b/listings/ch13-functional-features/no-listing-03-move-closures/Cargo.toml
new file mode 100644
index 00000000..4fd5d852
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-03-move-closures/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "equal-to-x"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch13-functional-features/no-listing-03-move-closures/output.txt b/listings/ch13-functional-features/no-listing-03-move-closures/output.txt
new file mode 100644
index 00000000..8d4b1a49
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-03-move-closures/output.txt
@@ -0,0 +1,22 @@
+$ cargo run
+   Compiling equal-to-x v0.1.0 (file:///projects/equal-to-x)
+error[E0382]: borrow of moved value: `x`
+ --> src/main.rs:6:40
+  |
+2 |     let x = vec![1, 2, 3];
+  |         - move occurs because `x` has type `std::vec::Vec<i32>`, which does not implement the `Copy` trait
+3 | 
+4 |     let equal_to_x = move |z| z == x;
+  |                      --------      - variable moved due to use in closure
+  |                      |
+  |                      value moved into closure here
+5 | 
+6 |     println!("can't use x here: {:?}", x);
+  |                                        ^ value borrowed here after move
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0382`.
+error: Could not compile `equal-to-x`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch13-functional-features/no-listing-03-move-closures/src/main.rs b/listings/ch13-functional-features/no-listing-03-move-closures/src/main.rs
new file mode 100644
index 00000000..19d47760
--- /dev/null
+++ b/listings/ch13-functional-features/no-listing-03-move-closures/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    let x = vec![1, 2, 3];
+
+    let equal_to_x = move |z| z == x;
+
+    println!("can't use x here: {:?}", x);
+
+    let y = vec![1, 2, 3];
+
+    assert!(equal_to_x(y));
+}
diff --git a/listings/ch14-more-about-cargo/listing-14-01/Cargo.lock b/listings/ch14-more-about-cargo/listing-14-01/Cargo.lock
new file mode 100644
index 00000000..b304dd7c
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-01/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "my_crate"
+version = "0.1.0"
+
diff --git a/listings/ch14-more-about-cargo/listing-14-01/Cargo.toml b/listings/ch14-more-about-cargo/listing-14-01/Cargo.toml
new file mode 100644
index 00000000..716953ae
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "my_crate"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch14-more-about-cargo/listing-14-01/src/lib.rs b/listings/ch14-more-about-cargo/listing-14-01/src/lib.rs
new file mode 100644
index 00000000..ed7abb72
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-01/src/lib.rs
@@ -0,0 +1,13 @@
+/// Adds one to the number given.
+///
+/// # Examples
+///
+/// ```
+/// let arg = 5;
+/// let answer = my_crate::add_one(arg);
+///
+/// assert_eq!(6, answer);
+/// ```
+pub fn add_one(x: i32) -> i32 {
+    x + 1
+}
diff --git a/listings/ch14-more-about-cargo/listing-14-02/Cargo.lock b/listings/ch14-more-about-cargo/listing-14-02/Cargo.lock
new file mode 100644
index 00000000..764f4fe4
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "my_crate"
+version = "0.1.0"
+
diff --git a/listings/ch14-more-about-cargo/listing-14-02/Cargo.toml b/listings/ch14-more-about-cargo/listing-14-02/Cargo.toml
new file mode 100644
index 00000000..716953ae
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "my_crate"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch14-more-about-cargo/listing-14-02/src/lib.rs b/listings/ch14-more-about-cargo/listing-14-02/src/lib.rs
new file mode 100644
index 00000000..64c9c439
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-02/src/lib.rs
@@ -0,0 +1,21 @@
+// ANCHOR: here
+//! # My Crate
+//!
+//! `my_crate` is a collection of utilities to make performing certain
+//! calculations more convenient.
+
+/// Adds one to the number given.
+// --snip--
+// ANCHOR_END: here
+///
+/// # Examples
+///
+/// ```
+/// let arg = 5;
+/// let answer = my_crate::add_one(arg);
+///
+/// assert_eq!(6, answer);
+/// ```
+pub fn add_one(x: i32) -> i32 {
+    x + 1
+}
diff --git a/listings/ch14-more-about-cargo/listing-14-03/Cargo.lock b/listings/ch14-more-about-cargo/listing-14-03/Cargo.lock
new file mode 100644
index 00000000..21233541
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "art"
+version = "0.1.0"
+
diff --git a/listings/ch14-more-about-cargo/listing-14-03/Cargo.toml b/listings/ch14-more-about-cargo/listing-14-03/Cargo.toml
new file mode 100644
index 00000000..a2e9e369
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "art"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch14-more-about-cargo/listing-14-03/src/lib.rs b/listings/ch14-more-about-cargo/listing-14-03/src/lib.rs
new file mode 100644
index 00000000..00a81c50
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-03/src/lib.rs
@@ -0,0 +1,36 @@
+// ANCHOR: here
+//! # Art
+//!
+//! A library for modeling artistic concepts.
+
+pub mod kinds {
+    /// The primary colors according to the RYB color model.
+    pub enum PrimaryColor {
+        Red,
+        Yellow,
+        Blue,
+    }
+
+    /// The secondary colors according to the RYB color model.
+    pub enum SecondaryColor {
+        Orange,
+        Green,
+        Purple,
+    }
+}
+
+pub mod utils {
+    use crate::kinds::*;
+
+    /// Combines two primary colors in equal amounts to create
+    /// a secondary color.
+    pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
+        // --snip--
+        // ANCHOR_END: here
+        SecondaryColor::Orange
+        // ANCHOR: here
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch14-more-about-cargo/listing-14-04/Cargo.lock b/listings/ch14-more-about-cargo/listing-14-04/Cargo.lock
new file mode 100644
index 00000000..21233541
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "art"
+version = "0.1.0"
+
diff --git a/listings/ch14-more-about-cargo/listing-14-04/Cargo.toml b/listings/ch14-more-about-cargo/listing-14-04/Cargo.toml
new file mode 100644
index 00000000..a2e9e369
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "art"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch14-more-about-cargo/listing-14-04/src/lib.rs b/listings/ch14-more-about-cargo/listing-14-04/src/lib.rs
new file mode 100644
index 00000000..b077a9a7
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-04/src/lib.rs
@@ -0,0 +1,29 @@
+//! # Art
+//!
+//! A library for modeling artistic concepts.
+
+pub mod kinds {
+    /// The primary colors according to the RYB color model.
+    pub enum PrimaryColor {
+        Red,
+        Yellow,
+        Blue,
+    }
+
+    /// The secondary colors according to the RYB color model.
+    pub enum SecondaryColor {
+        Orange,
+        Green,
+        Purple,
+    }
+}
+
+pub mod utils {
+    use crate::kinds::*;
+
+    /// Combines two primary colors in equal amounts to create
+    /// a secondary color.
+    pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
+        SecondaryColor::Orange
+    }
+}
diff --git a/listings/ch14-more-about-cargo/listing-14-04/src/main.rs b/listings/ch14-more-about-cargo/listing-14-04/src/main.rs
new file mode 100644
index 00000000..b1a4bf79
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-04/src/main.rs
@@ -0,0 +1,8 @@
+use art::kinds::PrimaryColor;
+use art::utils::mix;
+
+fn main() {
+    let red = PrimaryColor::Red;
+    let yellow = PrimaryColor::Yellow;
+    mix(red, yellow);
+}
diff --git a/listings/ch14-more-about-cargo/listing-14-05/Cargo.lock b/listings/ch14-more-about-cargo/listing-14-05/Cargo.lock
new file mode 100644
index 00000000..21233541
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "art"
+version = "0.1.0"
+
diff --git a/listings/ch14-more-about-cargo/listing-14-05/Cargo.toml b/listings/ch14-more-about-cargo/listing-14-05/Cargo.toml
new file mode 100644
index 00000000..a2e9e369
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "art"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch14-more-about-cargo/listing-14-05/src/lib.rs b/listings/ch14-more-about-cargo/listing-14-05/src/lib.rs
new file mode 100644
index 00000000..c5aa9e7b
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-05/src/lib.rs
@@ -0,0 +1,41 @@
+// ANCHOR: here
+//! # Art
+//!
+//! A library for modeling artistic concepts.
+
+pub use self::kinds::PrimaryColor;
+pub use self::kinds::SecondaryColor;
+pub use self::utils::mix;
+
+pub mod kinds {
+    // --snip--
+    // ANCHOR_END: here
+    /// The primary colors according to the RYB color model.
+    pub enum PrimaryColor {
+        Red,
+        Yellow,
+        Blue,
+    }
+
+    /// The secondary colors according to the RYB color model.
+    pub enum SecondaryColor {
+        Orange,
+        Green,
+        Purple,
+    }
+    // ANCHOR: here
+}
+
+pub mod utils {
+    // --snip--
+    // ANCHOR_END: here
+    use crate::kinds::*;
+
+    /// Combines two primary colors in equal amounts to create
+    /// a secondary color.
+    pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
+        SecondaryColor::Orange
+    }
+    // ANCHOR: here
+}
+// ANCHOR_END: here
diff --git a/listings/ch14-more-about-cargo/listing-14-06/Cargo.lock b/listings/ch14-more-about-cargo/listing-14-06/Cargo.lock
new file mode 100644
index 00000000..21233541
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "art"
+version = "0.1.0"
+
diff --git a/listings/ch14-more-about-cargo/listing-14-06/Cargo.toml b/listings/ch14-more-about-cargo/listing-14-06/Cargo.toml
new file mode 100644
index 00000000..a2e9e369
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "art"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch14-more-about-cargo/listing-14-06/src/lib.rs b/listings/ch14-more-about-cargo/listing-14-06/src/lib.rs
new file mode 100644
index 00000000..daabd006
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-06/src/lib.rs
@@ -0,0 +1,33 @@
+//! # Art
+//!
+//! A library for modeling artistic concepts.
+
+pub use self::kinds::PrimaryColor;
+pub use self::kinds::SecondaryColor;
+pub use self::utils::mix;
+
+pub mod kinds {
+    /// The primary colors according to the RYB color model.
+    pub enum PrimaryColor {
+        Red,
+        Yellow,
+        Blue,
+    }
+
+    /// The secondary colors according to the RYB color model.
+    pub enum SecondaryColor {
+        Orange,
+        Green,
+        Purple,
+    }
+}
+
+pub mod utils {
+    use crate::kinds::*;
+
+    /// Combines two primary colors in equal amounts to create
+    /// a secondary color.
+    pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
+        SecondaryColor::Orange
+    }
+}
diff --git a/listings/ch14-more-about-cargo/listing-14-06/src/main.rs b/listings/ch14-more-about-cargo/listing-14-06/src/main.rs
new file mode 100644
index 00000000..4b6e112a
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-06/src/main.rs
@@ -0,0 +1,13 @@
+// ANCHOR: here
+use art::PrimaryColor;
+use art::mix;
+
+fn main() {
+    // --snip--
+    // ANCHOR_END: here
+    let red = PrimaryColor::Red;
+    let yellow = PrimaryColor::Yellow;
+    mix(red, yellow);
+    // ANCHOR: here
+}
+// ANCHOR_END: here
diff --git a/listings/ch14-more-about-cargo/listing-14-07/add/Cargo.lock b/listings/ch14-more-about-cargo/listing-14-07/add/Cargo.lock
new file mode 100644
index 00000000..77292f61
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-07/add/Cargo.lock
@@ -0,0 +1,13 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "add-one"
+version = "0.1.0"
+
+[[package]]
+name = "adder"
+version = "0.1.0"
+dependencies = [
+ "add-one 0.1.0",
+]
+
diff --git a/listings/ch14-more-about-cargo/listing-14-07/add/Cargo.toml b/listings/ch14-more-about-cargo/listing-14-07/add/Cargo.toml
new file mode 100644
index 00000000..d26e7cfb
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-07/add/Cargo.toml
@@ -0,0 +1,6 @@
+[workspace]
+
+members = [
+    "adder",
+    "add-one",
+]
diff --git a/listings/ch14-more-about-cargo/listing-14-07/add/add-one/Cargo.toml b/listings/ch14-more-about-cargo/listing-14-07/add/add-one/Cargo.toml
new file mode 100644
index 00000000..8260fb54
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-07/add/add-one/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "add-one"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch14-more-about-cargo/listing-14-07/add/add-one/src/lib.rs b/listings/ch14-more-about-cargo/listing-14-07/add/add-one/src/lib.rs
new file mode 100644
index 00000000..b0bb8694
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-07/add/add-one/src/lib.rs
@@ -0,0 +1,3 @@
+pub fn add_one(x: i32) -> i32 {
+    x + 1
+}
diff --git a/listings/ch14-more-about-cargo/listing-14-07/add/adder/Cargo.toml b/listings/ch14-more-about-cargo/listing-14-07/add/adder/Cargo.toml
new file mode 100644
index 00000000..e73f1bec
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-07/add/adder/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+
+add-one = { path = "../add-one" }
diff --git a/listings/ch14-more-about-cargo/listing-14-07/add/adder/src/main.rs b/listings/ch14-more-about-cargo/listing-14-07/add/adder/src/main.rs
new file mode 100644
index 00000000..cec9a65c
--- /dev/null
+++ b/listings/ch14-more-about-cargo/listing-14-07/add/adder/src/main.rs
@@ -0,0 +1,6 @@
+use add_one;
+
+fn main() {
+    let num = 10;
+    println!("Hello, world! {} plus one is {}!", num, add_one::add_one(num));
+}
diff --git a/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/Cargo.lock b/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/Cargo.lock
new file mode 100644
index 00000000..4fb18f93
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/Cargo.toml
new file mode 100644
index 00000000..c5ea8e51
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/Cargo.toml
@@ -0,0 +1,5 @@
+[workspace]
+
+members = [
+    "adder",
+]
diff --git a/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/adder/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/adder/Cargo.toml
new file mode 100644
index 00000000..0e3940cf
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/adder/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/adder/src/main.rs b/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/adder/src/main.rs
new file mode 100644
index 00000000..e7a11a96
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/adder/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}
diff --git a/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/Cargo.lock b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/Cargo.lock
new file mode 100644
index 00000000..be803f31
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/Cargo.lock
@@ -0,0 +1,8 @@
+[[package]]
+name = "add-one"
+version = "0.1.0"
+
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/Cargo.toml
new file mode 100644
index 00000000..d26e7cfb
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/Cargo.toml
@@ -0,0 +1,6 @@
+[workspace]
+
+members = [
+    "adder",
+    "add-one",
+]
diff --git a/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/add-one/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/add-one/Cargo.toml
new file mode 100644
index 00000000..8260fb54
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/add-one/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "add-one"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/add-one/src/lib.rs b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/add-one/src/lib.rs
new file mode 100644
index 00000000..b0bb8694
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/add-one/src/lib.rs
@@ -0,0 +1,3 @@
+pub fn add_one(x: i32) -> i32 {
+    x + 1
+}
diff --git a/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/adder/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/adder/Cargo.toml
new file mode 100644
index 00000000..e73f1bec
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/adder/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+
+add-one = { path = "../add-one" }
diff --git a/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/adder/src/main.rs b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/adder/src/main.rs
new file mode 100644
index 00000000..e7a11a96
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/adder/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}
diff --git a/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/Cargo.lock b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/Cargo.lock
new file mode 100644
index 00000000..f17f35e8
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/Cargo.lock
@@ -0,0 +1,94 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "add-one"
+version = "0.1.0"
+dependencies = [
+ "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
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+ "add-one 0.1.0",
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+
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+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
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diff --git a/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/Cargo.toml
new file mode 100644
index 00000000..d26e7cfb
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/Cargo.toml
@@ -0,0 +1,6 @@
+[workspace]
+
+members = [
+    "adder",
+    "add-one",
+]
diff --git a/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/add-one/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/add-one/Cargo.toml
new file mode 100644
index 00000000..5b52051a
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/add-one/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "add-one"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/add-one/src/lib.rs b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/add-one/src/lib.rs
new file mode 100644
index 00000000..7b61b40a
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/add-one/src/lib.rs
@@ -0,0 +1,5 @@
+use rand;
+
+pub fn add_one(x: i32) -> i32 {
+    x + 1
+}
diff --git a/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/adder/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/adder/Cargo.toml
new file mode 100644
index 00000000..e73f1bec
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/adder/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+
+add-one = { path = "../add-one" }
diff --git a/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/adder/src/main.rs b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/adder/src/main.rs
new file mode 100644
index 00000000..cec9a65c
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/adder/src/main.rs
@@ -0,0 +1,6 @@
+use add_one;
+
+fn main() {
+    let num = 10;
+    println!("Hello, world! {} plus one is {}!", num, add_one::add_one(num));
+}
diff --git a/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/Cargo.lock b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/Cargo.lock
new file mode 100644
index 00000000..77292f61
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/Cargo.lock
@@ -0,0 +1,13 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "add-one"
+version = "0.1.0"
+
+[[package]]
+name = "adder"
+version = "0.1.0"
+dependencies = [
+ "add-one 0.1.0",
+]
+
diff --git a/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/Cargo.toml
new file mode 100644
index 00000000..d26e7cfb
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/Cargo.toml
@@ -0,0 +1,6 @@
+[workspace]
+
+members = [
+    "adder",
+    "add-one",
+]
diff --git a/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/add-one/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/add-one/Cargo.toml
new file mode 100644
index 00000000..8260fb54
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/add-one/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "add-one"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/add-one/src/lib.rs b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/add-one/src/lib.rs
new file mode 100644
index 00000000..40ceb128
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/add-one/src/lib.rs
@@ -0,0 +1,13 @@
+pub fn add_one(x: i32) -> i32 {
+    x + 1
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        assert_eq!(3, add_one(2));
+    }
+}
diff --git a/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/adder/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/adder/Cargo.toml
new file mode 100644
index 00000000..e73f1bec
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/adder/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+
+add-one = { path = "../add-one" }
diff --git a/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/adder/src/main.rs b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/adder/src/main.rs
new file mode 100644
index 00000000..cec9a65c
--- /dev/null
+++ b/listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/adder/src/main.rs
@@ -0,0 +1,6 @@
+use add_one;
+
+fn main() {
+    let num = 10;
+    println!("Hello, world! {} plus one is {}!", num, add_one::add_one(num));
+}
diff --git a/listings/ch14-more-about-cargo/output-only-01-adder-crate/add/.gitignore b/listings/ch14-more-about-cargo/output-only-01-adder-crate/add/.gitignore
new file mode 100644
index 00000000..b46d5c46
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-01-adder-crate/add/.gitignore
@@ -0,0 +1 @@
+adder
diff --git a/listings/ch14-more-about-cargo/output-only-01-adder-crate/add/Cargo.toml b/listings/ch14-more-about-cargo/output-only-01-adder-crate/add/Cargo.toml
new file mode 100644
index 00000000..c5ea8e51
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-01-adder-crate/add/Cargo.toml
@@ -0,0 +1,5 @@
+[workspace]
+
+members = [
+    "adder",
+]
diff --git a/listings/ch14-more-about-cargo/output-only-02-add-one/add/.gitignore b/listings/ch14-more-about-cargo/output-only-02-add-one/add/.gitignore
new file mode 100644
index 00000000..64904e06
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-02-add-one/add/.gitignore
@@ -0,0 +1 @@
+add-one
diff --git a/listings/ch14-more-about-cargo/output-only-02-add-one/add/Cargo.lock b/listings/ch14-more-about-cargo/output-only-02-add-one/add/Cargo.lock
new file mode 100644
index 00000000..be803f31
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-02-add-one/add/Cargo.lock
@@ -0,0 +1,8 @@
+[[package]]
+name = "add-one"
+version = "0.1.0"
+
+[[package]]
+name = "adder"
+version = "0.1.0"
+
diff --git a/listings/ch14-more-about-cargo/output-only-02-add-one/add/Cargo.toml b/listings/ch14-more-about-cargo/output-only-02-add-one/add/Cargo.toml
new file mode 100644
index 00000000..d26e7cfb
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-02-add-one/add/Cargo.toml
@@ -0,0 +1,6 @@
+[workspace]
+
+members = [
+    "adder",
+    "add-one",
+]
diff --git a/listings/ch14-more-about-cargo/output-only-02-add-one/add/add-one/Cargo.toml b/listings/ch14-more-about-cargo/output-only-02-add-one/add/add-one/Cargo.toml
new file mode 100644
index 00000000..602f686d
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-02-add-one/add/add-one/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "add-one"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/listings/ch14-more-about-cargo/output-only-02-add-one/add/add-one/src/lib.rs b/listings/ch14-more-about-cargo/output-only-02-add-one/add/add-one/src/lib.rs
new file mode 100644
index 00000000..31e1bb20
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-02-add-one/add/add-one/src/lib.rs
@@ -0,0 +1,7 @@
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}
diff --git a/listings/ch14-more-about-cargo/output-only-02-add-one/add/adder/Cargo.toml b/listings/ch14-more-about-cargo/output-only-02-add-one/add/adder/Cargo.toml
new file mode 100644
index 00000000..e73f1bec
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-02-add-one/add/adder/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+
+add-one = { path = "../add-one" }
diff --git a/listings/ch14-more-about-cargo/output-only-02-add-one/add/adder/src/main.rs b/listings/ch14-more-about-cargo/output-only-02-add-one/add/adder/src/main.rs
new file mode 100644
index 00000000..e7a11a96
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-02-add-one/add/adder/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}
diff --git a/listings/ch14-more-about-cargo/output-only-03-use-rand/add/Cargo.lock b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/Cargo.lock
new file mode 100644
index 00000000..f17f35e8
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/Cargo.lock
@@ -0,0 +1,94 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
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+ "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
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+"checksum rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c618c47cd3ebd209790115ab837de41425723956ad3ce2e6a7f09890947cacb9"
+"checksum rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
+"checksum rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d0e7a549d590831370895ab7ba4ea0c1b6b011d106b5ff2da6eee112615e6dc0"
+"checksum winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "f10e386af2b13e47c89e7236a7a14a086791a2b88ebad6df9bf42040195cf770"
+"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/listings/ch14-more-about-cargo/output-only-03-use-rand/add/Cargo.toml b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/Cargo.toml
new file mode 100644
index 00000000..d26e7cfb
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/Cargo.toml
@@ -0,0 +1,6 @@
+[workspace]
+
+members = [
+    "adder",
+    "add-one",
+]
diff --git a/listings/ch14-more-about-cargo/output-only-03-use-rand/add/add-one/Cargo.toml b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/add-one/Cargo.toml
new file mode 100644
index 00000000..5b52051a
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/add-one/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "add-one"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+rand = "0.5.5"
diff --git a/listings/ch14-more-about-cargo/output-only-03-use-rand/add/add-one/src/lib.rs b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/add-one/src/lib.rs
new file mode 100644
index 00000000..7b61b40a
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/add-one/src/lib.rs
@@ -0,0 +1,5 @@
+use rand;
+
+pub fn add_one(x: i32) -> i32 {
+    x + 1
+}
diff --git a/listings/ch14-more-about-cargo/output-only-03-use-rand/add/adder/Cargo.toml b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/adder/Cargo.toml
new file mode 100644
index 00000000..e73f1bec
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/adder/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "adder"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+
+add-one = { path = "../add-one" }
diff --git a/listings/ch14-more-about-cargo/output-only-03-use-rand/add/adder/src/main.rs b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/adder/src/main.rs
new file mode 100644
index 00000000..d08f1e59
--- /dev/null
+++ b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/adder/src/main.rs
@@ -0,0 +1,7 @@
+use rand;
+use add_one;
+
+fn main() {
+    let num = 10;
+    println!("Hello, world! {} plus one is {}!", num, add_one::add_one(num));
+}
diff --git a/listings/ch15-smart-pointers/listing-15-01/Cargo.lock b/listings/ch15-smart-pointers/listing-15-01/Cargo.lock
new file mode 100644
index 00000000..9307e308
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "box-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-01/Cargo.toml b/listings/ch15-smart-pointers/listing-15-01/Cargo.toml
new file mode 100644
index 00000000..4a0bb9d2
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "box-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-01/src/main.rs b/listings/ch15-smart-pointers/listing-15-01/src/main.rs
new file mode 100644
index 00000000..8da1d905
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-01/src/main.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let b = Box::new(5);
+    println!("b = {}", b);
+}
diff --git a/listings/ch15-smart-pointers/listing-15-02/Cargo.lock b/listings/ch15-smart-pointers/listing-15-02/Cargo.lock
new file mode 100644
index 00000000..94cd138b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cons-list"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-02/Cargo.toml b/listings/ch15-smart-pointers/listing-15-02/Cargo.toml
new file mode 100644
index 00000000..86c8e956
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cons-list"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-02/src/main.rs b/listings/ch15-smart-pointers/listing-15-02/src/main.rs
new file mode 100644
index 00000000..84640b9b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-02/src/main.rs
@@ -0,0 +1,8 @@
+// ANCHOR: here
+enum List {
+    Cons(i32, List),
+    Nil,
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch15-smart-pointers/listing-15-03/Cargo.lock b/listings/ch15-smart-pointers/listing-15-03/Cargo.lock
new file mode 100644
index 00000000..94cd138b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cons-list"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-03/Cargo.toml b/listings/ch15-smart-pointers/listing-15-03/Cargo.toml
new file mode 100644
index 00000000..86c8e956
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cons-list"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-03/output.txt b/listings/ch15-smart-pointers/listing-15-03/output.txt
new file mode 100644
index 00000000..b7d5c225
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-03/output.txt
@@ -0,0 +1,28 @@
+$ cargo run
+   Compiling cons-list v0.1.0 (file:///projects/cons-list)
+error[E0072]: recursive type `List` has infinite size
+ --> src/main.rs:1:1
+  |
+1 | enum List {
+  | ^^^^^^^^^ recursive type has infinite size
+2 |     Cons(i32, List),
+  |               ---- recursive without indirection
+  |
+  = help: insert indirection (e.g., a `Box`, `Rc`, or `&`) at some point to make `List` representable
+
+error[E0391]: cycle detected when processing `List`
+ --> src/main.rs:1:1
+  |
+1 | enum List {
+  | ^^^^^^^^^
+  |
+  = note: ...which again requires processing `List`, completing the cycle
+  = note: cycle used when computing dropck types for `Canonical { max_universe: U0, variables: [], value: ParamEnvAnd { param_env: ParamEnv { caller_bounds: [], reveal: UserFacing, def_id: None }, value: List } }`
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0072, E0391.
+For more information about an error, try `rustc --explain E0072`.
+error: Could not compile `cons-list`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch15-smart-pointers/listing-15-03/src/main.rs b/listings/ch15-smart-pointers/listing-15-03/src/main.rs
new file mode 100644
index 00000000..a96f3d7b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-03/src/main.rs
@@ -0,0 +1,12 @@
+enum List {
+    Cons(i32, List),
+    Nil,
+}
+
+// ANCHOR: here
+use crate::List::{Cons, Nil};
+
+fn main() {
+    let list = Cons(1, Cons(2, Cons(3, Nil)));
+}
+// ANCHOR_END: here
diff --git a/listings/ch15-smart-pointers/listing-15-05/Cargo.lock b/listings/ch15-smart-pointers/listing-15-05/Cargo.lock
new file mode 100644
index 00000000..94cd138b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cons-list"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-05/Cargo.toml b/listings/ch15-smart-pointers/listing-15-05/Cargo.toml
new file mode 100644
index 00000000..86c8e956
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cons-list"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-05/src/main.rs b/listings/ch15-smart-pointers/listing-15-05/src/main.rs
new file mode 100644
index 00000000..a3f6c19f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-05/src/main.rs
@@ -0,0 +1,13 @@
+enum List {
+    Cons(i32, Box<List>),
+    Nil,
+}
+
+use crate::List::{Cons, Nil};
+
+fn main() {
+    let list = Cons(1,
+        Box::new(Cons(2,
+            Box::new(Cons(3,
+                Box::new(Nil))))));
+}
diff --git a/listings/ch15-smart-pointers/listing-15-06/Cargo.lock b/listings/ch15-smart-pointers/listing-15-06/Cargo.lock
new file mode 100644
index 00000000..4d76558f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "deref-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-06/Cargo.toml b/listings/ch15-smart-pointers/listing-15-06/Cargo.toml
new file mode 100644
index 00000000..2a9630fe
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "deref-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-06/src/main.rs b/listings/ch15-smart-pointers/listing-15-06/src/main.rs
new file mode 100644
index 00000000..174b620c
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-06/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    let x = 5;
+    let y = &x;
+
+    assert_eq!(5, x);
+    assert_eq!(5, *y);
+}
diff --git a/listings/ch15-smart-pointers/listing-15-07/Cargo.lock b/listings/ch15-smart-pointers/listing-15-07/Cargo.lock
new file mode 100644
index 00000000..4d76558f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "deref-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-07/Cargo.toml b/listings/ch15-smart-pointers/listing-15-07/Cargo.toml
new file mode 100644
index 00000000..2a9630fe
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "deref-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-07/src/main.rs b/listings/ch15-smart-pointers/listing-15-07/src/main.rs
new file mode 100644
index 00000000..4933a416
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-07/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    let x = 5;
+    let y = Box::new(x);
+
+    assert_eq!(5, x);
+    assert_eq!(5, *y);
+}
diff --git a/listings/ch15-smart-pointers/listing-15-08/Cargo.lock b/listings/ch15-smart-pointers/listing-15-08/Cargo.lock
new file mode 100644
index 00000000..4d76558f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "deref-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-08/Cargo.toml b/listings/ch15-smart-pointers/listing-15-08/Cargo.toml
new file mode 100644
index 00000000..2a9630fe
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "deref-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-08/src/main.rs b/listings/ch15-smart-pointers/listing-15-08/src/main.rs
new file mode 100644
index 00000000..8cbf312d
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-08/src/main.rs
@@ -0,0 +1,12 @@
+// ANCHOR: here
+struct MyBox<T>(T);
+
+impl<T> MyBox<T> {
+    fn new(x: T) -> MyBox<T> {
+        MyBox(x)
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+}
diff --git a/listings/ch15-smart-pointers/listing-15-09/Cargo.lock b/listings/ch15-smart-pointers/listing-15-09/Cargo.lock
new file mode 100644
index 00000000..4d76558f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "deref-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-09/Cargo.toml b/listings/ch15-smart-pointers/listing-15-09/Cargo.toml
new file mode 100644
index 00000000..2a9630fe
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "deref-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-09/output.txt b/listings/ch15-smart-pointers/listing-15-09/output.txt
new file mode 100644
index 00000000..c2155186
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-09/output.txt
@@ -0,0 +1,14 @@
+$ cargo run
+   Compiling deref-example v0.1.0 (file:///projects/deref-example)
+error[E0614]: type `MyBox<{integer}>` cannot be dereferenced
+  --> src/main.rs:14:19
+   |
+14 |     assert_eq!(5, *y);
+   |                   ^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0614`.
+error: Could not compile `deref-example`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch15-smart-pointers/listing-15-09/src/main.rs b/listings/ch15-smart-pointers/listing-15-09/src/main.rs
new file mode 100644
index 00000000..d07f2d78
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-09/src/main.rs
@@ -0,0 +1,17 @@
+struct MyBox<T>(T);
+
+impl<T> MyBox<T> {
+    fn new(x: T) -> MyBox<T> {
+        MyBox(x)
+    }
+}
+
+// ANCHOR: here
+fn main() {
+    let x = 5;
+    let y = MyBox::new(x);
+
+    assert_eq!(5, x);
+    assert_eq!(5, *y);
+}
+// ANCHOR_END: here
diff --git a/listings/ch15-smart-pointers/listing-15-10/Cargo.lock b/listings/ch15-smart-pointers/listing-15-10/Cargo.lock
new file mode 100644
index 00000000..4d76558f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "deref-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-10/Cargo.toml b/listings/ch15-smart-pointers/listing-15-10/Cargo.toml
new file mode 100644
index 00000000..2a9630fe
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "deref-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-10/src/main.rs b/listings/ch15-smart-pointers/listing-15-10/src/main.rs
new file mode 100644
index 00000000..a97f97c9
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-10/src/main.rs
@@ -0,0 +1,27 @@
+// ANCHOR: here
+use std::ops::Deref;
+
+impl<T> Deref for MyBox<T> {
+    type Target = T;
+
+    fn deref(&self) -> &T {
+        &self.0
+    }
+}
+// ANCHOR_END: here
+
+struct MyBox<T>(T);
+
+impl<T> MyBox<T> {
+    fn new(x: T) -> MyBox<T> {
+        MyBox(x)
+    }
+}
+
+fn main() {
+    let x = 5;
+    let y = MyBox::new(x);
+
+    assert_eq!(5, x);
+    assert_eq!(5, *y);
+}
diff --git a/listings/ch15-smart-pointers/listing-15-11/Cargo.lock b/listings/ch15-smart-pointers/listing-15-11/Cargo.lock
new file mode 100644
index 00000000..4d76558f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "deref-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-11/Cargo.toml b/listings/ch15-smart-pointers/listing-15-11/Cargo.toml
new file mode 100644
index 00000000..2a9630fe
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "deref-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-11/src/main.rs b/listings/ch15-smart-pointers/listing-15-11/src/main.rs
new file mode 100644
index 00000000..76ffd531
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-11/src/main.rs
@@ -0,0 +1,8 @@
+// ANCHOR: here
+fn hello(name: &str) {
+    println!("Hello, {}!", name);
+}
+// ANCHOR_END: here
+
+fn main() {
+}
diff --git a/listings/ch15-smart-pointers/listing-15-12/Cargo.lock b/listings/ch15-smart-pointers/listing-15-12/Cargo.lock
new file mode 100644
index 00000000..4d76558f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "deref-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-12/Cargo.toml b/listings/ch15-smart-pointers/listing-15-12/Cargo.toml
new file mode 100644
index 00000000..2a9630fe
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "deref-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-12/src/main.rs b/listings/ch15-smart-pointers/listing-15-12/src/main.rs
new file mode 100644
index 00000000..6a3e143c
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-12/src/main.rs
@@ -0,0 +1,28 @@
+use std::ops::Deref;
+
+impl<T> Deref for MyBox<T> {
+    type Target = T;
+
+    fn deref(&self) -> &T {
+        &self.0
+    }
+}
+
+struct MyBox<T>(T);
+
+impl<T> MyBox<T> {
+    fn new(x: T) -> MyBox<T> {
+        MyBox(x)
+    }
+}
+
+fn hello(name: &str) {
+    println!("Hello, {}!", name);
+}
+
+// ANCHOR: here
+fn main() {
+    let m = MyBox::new(String::from("Rust"));
+    hello(&m);
+}
+// ANCHOR_END: here
diff --git a/listings/ch15-smart-pointers/listing-15-13/Cargo.lock b/listings/ch15-smart-pointers/listing-15-13/Cargo.lock
new file mode 100644
index 00000000..4d76558f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "deref-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-13/Cargo.toml b/listings/ch15-smart-pointers/listing-15-13/Cargo.toml
new file mode 100644
index 00000000..2a9630fe
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "deref-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-13/src/main.rs b/listings/ch15-smart-pointers/listing-15-13/src/main.rs
new file mode 100644
index 00000000..ef5361c1
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-13/src/main.rs
@@ -0,0 +1,28 @@
+use std::ops::Deref;
+
+impl<T> Deref for MyBox<T> {
+    type Target = T;
+
+    fn deref(&self) -> &T {
+        &self.0
+    }
+}
+
+struct MyBox<T>(T);
+
+impl<T> MyBox<T> {
+    fn new(x: T) -> MyBox<T> {
+        MyBox(x)
+    }
+}
+
+fn hello(name: &str) {
+    println!("Hello, {}!", name);
+}
+
+// ANCHOR: here
+fn main() {
+    let m = MyBox::new(String::from("Rust"));
+    hello(&(*m)[..]);
+}
+// ANCHOR_END: here
diff --git a/listings/ch15-smart-pointers/listing-15-14/Cargo.lock b/listings/ch15-smart-pointers/listing-15-14/Cargo.lock
new file mode 100644
index 00000000..ba50249f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "drop-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-14/Cargo.toml b/listings/ch15-smart-pointers/listing-15-14/Cargo.toml
new file mode 100644
index 00000000..e9ad457c
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "drop-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-14/output.txt b/listings/ch15-smart-pointers/listing-15-14/output.txt
new file mode 100644
index 00000000..4e795949
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-14/output.txt
@@ -0,0 +1,7 @@
+$ cargo run
+   Compiling drop-example v0.1.0 (file:///projects/drop-example)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.60s
+     Running `target/debug/drop-example`
+CustomSmartPointers created.
+Dropping CustomSmartPointer with data `other stuff`!
+Dropping CustomSmartPointer with data `my stuff`!
diff --git a/listings/ch15-smart-pointers/listing-15-14/src/main.rs b/listings/ch15-smart-pointers/listing-15-14/src/main.rs
new file mode 100644
index 00000000..c5b1bb0c
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-14/src/main.rs
@@ -0,0 +1,15 @@
+struct CustomSmartPointer {
+    data: String,
+}
+
+impl Drop for CustomSmartPointer {
+    fn drop(&mut self) {
+        println!("Dropping CustomSmartPointer with data `{}`!", self.data);
+    }
+}
+
+fn main() {
+    let c = CustomSmartPointer { data: String::from("my stuff") };
+    let d = CustomSmartPointer { data: String::from("other stuff") };
+    println!("CustomSmartPointers created.");
+}
diff --git a/listings/ch15-smart-pointers/listing-15-15/Cargo.lock b/listings/ch15-smart-pointers/listing-15-15/Cargo.lock
new file mode 100644
index 00000000..ba50249f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "drop-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-15/Cargo.toml b/listings/ch15-smart-pointers/listing-15-15/Cargo.toml
new file mode 100644
index 00000000..e9ad457c
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "drop-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-15/output.txt b/listings/ch15-smart-pointers/listing-15-15/output.txt
new file mode 100644
index 00000000..30dd9958
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-15/output.txt
@@ -0,0 +1,14 @@
+$ cargo run
+   Compiling drop-example v0.1.0 (file:///projects/drop-example)
+error[E0040]: explicit use of destructor method
+  --> src/main.rs:14:7
+   |
+14 |     c.drop();
+   |       ^^^^ explicit destructor calls not allowed
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0040`.
+error: Could not compile `drop-example`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch15-smart-pointers/listing-15-15/src/main.rs b/listings/ch15-smart-pointers/listing-15-15/src/main.rs
new file mode 100644
index 00000000..212d3611
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-15/src/main.rs
@@ -0,0 +1,18 @@
+struct CustomSmartPointer {
+    data: String,
+}
+
+impl Drop for CustomSmartPointer {
+    fn drop(&mut self) {
+        println!("Dropping CustomSmartPointer with data `{}`!", self.data);
+    }
+}
+
+// ANCHOR: here
+fn main() {
+    let c = CustomSmartPointer { data: String::from("some data") };
+    println!("CustomSmartPointer created.");
+    c.drop();
+    println!("CustomSmartPointer dropped before the end of main.");
+}
+// ANCHOR_END: here
diff --git a/listings/ch15-smart-pointers/listing-15-16/Cargo.lock b/listings/ch15-smart-pointers/listing-15-16/Cargo.lock
new file mode 100644
index 00000000..ba50249f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-16/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "drop-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-16/Cargo.toml b/listings/ch15-smart-pointers/listing-15-16/Cargo.toml
new file mode 100644
index 00000000..e9ad457c
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-16/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "drop-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-16/output.txt b/listings/ch15-smart-pointers/listing-15-16/output.txt
new file mode 100644
index 00000000..e960cd89
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-16/output.txt
@@ -0,0 +1,7 @@
+$ cargo run
+   Compiling drop-example v0.1.0 (file:///projects/drop-example)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.73s
+     Running `target/debug/drop-example`
+CustomSmartPointer created.
+Dropping CustomSmartPointer with data `some data`!
+CustomSmartPointer dropped before the end of main.
diff --git a/listings/ch15-smart-pointers/listing-15-16/src/main.rs b/listings/ch15-smart-pointers/listing-15-16/src/main.rs
new file mode 100644
index 00000000..c31fd3aa
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-16/src/main.rs
@@ -0,0 +1,18 @@
+struct CustomSmartPointer {
+    data: String,
+}
+
+impl Drop for CustomSmartPointer {
+    fn drop(&mut self) {
+        println!("Dropping CustomSmartPointer with data `{}`!", self.data);
+    }
+}
+
+// ANCHOR: here
+fn main() {
+    let c = CustomSmartPointer { data: String::from("some data") };
+    println!("CustomSmartPointer created.");
+    drop(c);
+    println!("CustomSmartPointer dropped before the end of main.");
+}
+// ANCHOR_END: here
diff --git a/listings/ch15-smart-pointers/listing-15-17/Cargo.lock b/listings/ch15-smart-pointers/listing-15-17/Cargo.lock
new file mode 100644
index 00000000..94cd138b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-17/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cons-list"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-17/Cargo.toml b/listings/ch15-smart-pointers/listing-15-17/Cargo.toml
new file mode 100644
index 00000000..86c8e956
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-17/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cons-list"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-17/output.txt b/listings/ch15-smart-pointers/listing-15-17/output.txt
new file mode 100644
index 00000000..7b3cda4b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-17/output.txt
@@ -0,0 +1,19 @@
+$ cargo run
+   Compiling cons-list v0.1.0 (file:///projects/cons-list)
+error[E0382]: use of moved value: `a`
+  --> src/main.rs:13:30
+   |
+9  |     let a = Cons(5,
+   |         - move occurs because `a` has type `List`, which does not implement the `Copy` trait
+...
+12 |     let b = Cons(3, Box::new(a));
+   |                              - value moved here
+13 |     let c = Cons(4, Box::new(a));
+   |                              ^ value used here after move
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0382`.
+error: Could not compile `cons-list`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch15-smart-pointers/listing-15-17/src/main.rs b/listings/ch15-smart-pointers/listing-15-17/src/main.rs
new file mode 100644
index 00000000..a9998113
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-17/src/main.rs
@@ -0,0 +1,14 @@
+enum List {
+    Cons(i32, Box<List>),
+    Nil,
+}
+
+use crate::List::{Cons, Nil};
+
+fn main() {
+    let a = Cons(5,
+        Box::new(Cons(10,
+            Box::new(Nil))));
+    let b = Cons(3, Box::new(a));
+    let c = Cons(4, Box::new(a));
+}
diff --git a/listings/ch15-smart-pointers/listing-15-18/Cargo.lock b/listings/ch15-smart-pointers/listing-15-18/Cargo.lock
new file mode 100644
index 00000000..94cd138b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-18/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cons-list"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-18/Cargo.toml b/listings/ch15-smart-pointers/listing-15-18/Cargo.toml
new file mode 100644
index 00000000..86c8e956
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-18/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cons-list"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-18/src/main.rs b/listings/ch15-smart-pointers/listing-15-18/src/main.rs
new file mode 100644
index 00000000..602f7de4
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-18/src/main.rs
@@ -0,0 +1,13 @@
+enum List {
+    Cons(i32, Rc<List>),
+    Nil,
+}
+
+use crate::List::{Cons, Nil};
+use std::rc::Rc;
+
+fn main() {
+    let a = Rc::new(Cons(5, Rc::new(Cons(10, Rc::new(Nil)))));
+    let b = Cons(3, Rc::clone(&a));
+    let c = Cons(4, Rc::clone(&a));
+}
diff --git a/listings/ch15-smart-pointers/listing-15-19/Cargo.lock b/listings/ch15-smart-pointers/listing-15-19/Cargo.lock
new file mode 100644
index 00000000..94cd138b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-19/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cons-list"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-19/Cargo.toml b/listings/ch15-smart-pointers/listing-15-19/Cargo.toml
new file mode 100644
index 00000000..86c8e956
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-19/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cons-list"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-19/output.txt b/listings/ch15-smart-pointers/listing-15-19/output.txt
new file mode 100644
index 00000000..6a8cc8ef
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-19/output.txt
@@ -0,0 +1,8 @@
+$ cargo run
+   Compiling cons-list v0.1.0 (file:///projects/cons-list)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.45s
+     Running `target/debug/cons-list`
+count after creating a = 1
+count after creating b = 2
+count after creating c = 3
+count after c goes out of scope = 2
diff --git a/listings/ch15-smart-pointers/listing-15-19/src/main.rs b/listings/ch15-smart-pointers/listing-15-19/src/main.rs
new file mode 100644
index 00000000..1bd7bc53
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-19/src/main.rs
@@ -0,0 +1,21 @@
+enum List {
+    Cons(i32, Rc<List>),
+    Nil,
+}
+
+use crate::List::{Cons, Nil};
+use std::rc::Rc;
+
+// ANCHOR: here
+fn main() {
+    let a = Rc::new(Cons(5, Rc::new(Cons(10, Rc::new(Nil)))));
+    println!("count after creating a = {}", Rc::strong_count(&a));
+    let b = Cons(3, Rc::clone(&a));
+    println!("count after creating b = {}", Rc::strong_count(&a));
+    {
+        let c = Cons(4, Rc::clone(&a));
+        println!("count after creating c = {}", Rc::strong_count(&a));
+    }
+    println!("count after c goes out of scope = {}", Rc::strong_count(&a));
+}
+// ANCHOR_END: here
diff --git a/listings/ch15-smart-pointers/listing-15-20/Cargo.lock b/listings/ch15-smart-pointers/listing-15-20/Cargo.lock
new file mode 100644
index 00000000..dd45b536
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-20/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "limit-tracker"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-20/Cargo.toml b/listings/ch15-smart-pointers/listing-15-20/Cargo.toml
new file mode 100644
index 00000000..b230a232
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-20/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "limit-tracker"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-20/src/lib.rs b/listings/ch15-smart-pointers/listing-15-20/src/lib.rs
new file mode 100644
index 00000000..f229e8a7
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-20/src/lib.rs
@@ -0,0 +1,34 @@
+pub trait Messenger {
+    fn send(&self, msg: &str);
+}
+
+pub struct LimitTracker<'a, T: Messenger> {
+    messenger: &'a T,
+    value: usize,
+    max: usize,
+}
+
+impl<'a, T> LimitTracker<'a, T>
+    where T: Messenger {
+    pub fn new(messenger: &T, max: usize) -> LimitTracker<T> {
+        LimitTracker {
+            messenger,
+            value: 0,
+            max,
+        }
+    }
+
+    pub fn set_value(&mut self, value: usize) {
+        self.value = value;
+
+        let percentage_of_max = self.value as f64 / self.max as f64;
+
+        if percentage_of_max >= 1.0 {
+            self.messenger.send("Error: You are over your quota!");
+        } else if percentage_of_max >= 0.9 {
+             self.messenger.send("Urgent warning: You've used up over 90% of your quota!");
+        } else if percentage_of_max >= 0.75 {
+            self.messenger.send("Warning: You've used up over 75% of your quota!");
+        }
+    }
+}
diff --git a/listings/ch15-smart-pointers/listing-15-21/Cargo.lock b/listings/ch15-smart-pointers/listing-15-21/Cargo.lock
new file mode 100644
index 00000000..dd45b536
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-21/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "limit-tracker"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-21/Cargo.toml b/listings/ch15-smart-pointers/listing-15-21/Cargo.toml
new file mode 100644
index 00000000..b230a232
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-21/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "limit-tracker"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-21/output.txt b/listings/ch15-smart-pointers/listing-15-21/output.txt
new file mode 100644
index 00000000..80719191
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-21/output.txt
@@ -0,0 +1,16 @@
+$ cargo test
+   Compiling limit-tracker v0.1.0 (file:///projects/limit-tracker)
+error[E0596]: cannot borrow `self.sent_messages` as mutable, as it is behind a `&` reference
+  --> src/lib.rs:52:13
+   |
+51 |         fn send(&self, message: &str) {
+   |                 ----- help: consider changing this to be a mutable reference: `&mut self`
+52 |             self.sent_messages.push(String::from(message));
+   |             ^^^^^^^^^^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0596`.
+error: Could not compile `limit-tracker`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch15-smart-pointers/listing-15-21/src/lib.rs b/listings/ch15-smart-pointers/listing-15-21/src/lib.rs
new file mode 100644
index 00000000..7f84c7be
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-21/src/lib.rs
@@ -0,0 +1,67 @@
+pub trait Messenger {
+    fn send(&self, msg: &str);
+}
+
+pub struct LimitTracker<'a, T: Messenger> {
+    messenger: &'a T,
+    value: usize,
+    max: usize,
+}
+
+impl<'a, T> LimitTracker<'a, T>
+    where T: Messenger {
+    pub fn new(messenger: &T, max: usize) -> LimitTracker<T> {
+        LimitTracker {
+            messenger,
+            value: 0,
+            max,
+        }
+    }
+
+    pub fn set_value(&mut self, value: usize) {
+        self.value = value;
+
+        let percentage_of_max = self.value as f64 / self.max as f64;
+
+        if percentage_of_max >= 1.0 {
+            self.messenger.send("Error: You are over your quota!");
+        } else if percentage_of_max >= 0.9 {
+             self.messenger.send("Urgent warning: You've used up over 90% of your quota!");
+        } else if percentage_of_max >= 0.75 {
+            self.messenger.send("Warning: You've used up over 75% of your quota!");
+        }
+    }
+}
+
+// ANCHOR: here
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    struct MockMessenger {
+        sent_messages: Vec<String>,
+    }
+
+    impl MockMessenger {
+        fn new() -> MockMessenger {
+            MockMessenger { sent_messages: vec![] }
+        }
+    }
+
+    impl Messenger for MockMessenger {
+        fn send(&self, message: &str) {
+            self.sent_messages.push(String::from(message));
+        }
+    }
+
+    #[test]
+    fn it_sends_an_over_75_percent_warning_message() {
+        let mock_messenger = MockMessenger::new();
+        let mut limit_tracker = LimitTracker::new(&mock_messenger, 100);
+
+        limit_tracker.set_value(80);
+
+        assert_eq!(mock_messenger.sent_messages.len(), 1);
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch15-smart-pointers/listing-15-22/Cargo.lock b/listings/ch15-smart-pointers/listing-15-22/Cargo.lock
new file mode 100644
index 00000000..dd45b536
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-22/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "limit-tracker"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-22/Cargo.toml b/listings/ch15-smart-pointers/listing-15-22/Cargo.toml
new file mode 100644
index 00000000..b230a232
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-22/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "limit-tracker"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-22/src/lib.rs b/listings/ch15-smart-pointers/listing-15-22/src/lib.rs
new file mode 100644
index 00000000..ac2298cf
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-22/src/lib.rs
@@ -0,0 +1,74 @@
+pub trait Messenger {
+    fn send(&self, msg: &str);
+}
+
+pub struct LimitTracker<'a, T: Messenger> {
+    messenger: &'a T,
+    value: usize,
+    max: usize,
+}
+
+impl<'a, T> LimitTracker<'a, T>
+    where T: Messenger {
+    pub fn new(messenger: &T, max: usize) -> LimitTracker<T> {
+        LimitTracker {
+            messenger,
+            value: 0,
+            max,
+        }
+    }
+
+    pub fn set_value(&mut self, value: usize) {
+        self.value = value;
+
+        let percentage_of_max = self.value as f64 / self.max as f64;
+
+        if percentage_of_max >= 1.0 {
+            self.messenger.send("Error: You are over your quota!");
+        } else if percentage_of_max >= 0.9 {
+             self.messenger.send("Urgent warning: You've used up over 90% of your quota!");
+        } else if percentage_of_max >= 0.75 {
+            self.messenger.send("Warning: You've used up over 75% of your quota!");
+        }
+    }
+}
+
+// ANCHOR: here
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::cell::RefCell;
+
+    struct MockMessenger {
+        sent_messages: RefCell<Vec<String>>,
+    }
+
+    impl MockMessenger {
+        fn new() -> MockMessenger {
+            MockMessenger { sent_messages: RefCell::new(vec![]) }
+        }
+    }
+
+    impl Messenger for MockMessenger {
+        fn send(&self, message: &str) {
+            self.sent_messages.borrow_mut().push(String::from(message));
+        }
+    }
+
+    #[test]
+    fn it_sends_an_over_75_percent_warning_message() {
+        // --snip--
+        // ANCHOR_END: here
+        let mock_messenger = MockMessenger::new();
+        let mut limit_tracker = LimitTracker::new(&mock_messenger, 100);
+
+        limit_tracker.set_value(80);
+        // ANCHOR: here
+
+        // ANCHOR: here
+        assert_eq!(mock_messenger.sent_messages.borrow().len(), 1);
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch15-smart-pointers/listing-15-23/Cargo.lock b/listings/ch15-smart-pointers/listing-15-23/Cargo.lock
new file mode 100644
index 00000000..dd45b536
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-23/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "limit-tracker"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-23/Cargo.toml b/listings/ch15-smart-pointers/listing-15-23/Cargo.toml
new file mode 100644
index 00000000..b230a232
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-23/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "limit-tracker"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-23/output.txt b/listings/ch15-smart-pointers/listing-15-23/output.txt
new file mode 100644
index 00000000..332995aa
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-23/output.txt
@@ -0,0 +1,21 @@
+$ cargo test
+   Compiling limit-tracker v0.1.0 (file:///projects/limit-tracker)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.82s
+     Running target/debug/deps/limit_tracker-54dba9352a1db13d
+
+running 1 test
+test tests::it_sends_an_over_75_percent_warning_message ... FAILED
+
+failures:
+
+---- tests::it_sends_an_over_75_percent_warning_message stdout ----
+thread 'main' panicked at 'already borrowed: BorrowMutError', src/libcore/result.rs:999:5
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+
+
+failures:
+    tests::it_sends_an_over_75_percent_warning_message
+
+test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+
+error: test failed, to rerun pass '--lib'
diff --git a/listings/ch15-smart-pointers/listing-15-23/src/lib.rs b/listings/ch15-smart-pointers/listing-15-23/src/lib.rs
new file mode 100644
index 00000000..64065e1b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-23/src/lib.rs
@@ -0,0 +1,72 @@
+pub trait Messenger {
+    fn send(&self, msg: &str);
+}
+
+pub struct LimitTracker<'a, T: Messenger> {
+    messenger: &'a T,
+    value: usize,
+    max: usize,
+}
+
+impl<'a, T> LimitTracker<'a, T>
+    where T: Messenger {
+    pub fn new(messenger: &T, max: usize) -> LimitTracker<T> {
+        LimitTracker {
+            messenger,
+            value: 0,
+            max,
+        }
+    }
+
+    pub fn set_value(&mut self, value: usize) {
+        self.value = value;
+
+        let percentage_of_max = self.value as f64 / self.max as f64;
+
+        if percentage_of_max >= 1.0 {
+            self.messenger.send("Error: You are over your quota!");
+        } else if percentage_of_max >= 0.9 {
+             self.messenger.send("Urgent warning: You've used up over 90% of your quota!");
+        } else if percentage_of_max >= 0.75 {
+            self.messenger.send("Warning: You've used up over 75% of your quota!");
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::cell::RefCell;
+
+    struct MockMessenger {
+        sent_messages: RefCell<Vec<String>>,
+    }
+
+    impl MockMessenger {
+        fn new() -> MockMessenger {
+            MockMessenger { sent_messages: RefCell::new(vec![]) }
+        }
+    }
+
+    // ANCHOR: here
+    impl Messenger for MockMessenger {
+        fn send(&self, message: &str) {
+            let mut one_borrow = self.sent_messages.borrow_mut();
+            let mut two_borrow = self.sent_messages.borrow_mut();
+
+            one_borrow.push(String::from(message));
+            two_borrow.push(String::from(message));
+        }
+    }
+    // ANCHOR_END: here
+
+    #[test]
+    fn it_sends_an_over_75_percent_warning_message() {
+        let mock_messenger = MockMessenger::new();
+        let mut limit_tracker = LimitTracker::new(&mock_messenger, 100);
+
+        limit_tracker.set_value(80);
+
+        assert_eq!(mock_messenger.sent_messages.borrow().len(), 1);
+    }
+}
diff --git a/listings/ch15-smart-pointers/listing-15-24/Cargo.lock b/listings/ch15-smart-pointers/listing-15-24/Cargo.lock
new file mode 100644
index 00000000..94cd138b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-24/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cons-list"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-24/Cargo.toml b/listings/ch15-smart-pointers/listing-15-24/Cargo.toml
new file mode 100644
index 00000000..86c8e956
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-24/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cons-list"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-24/output.txt b/listings/ch15-smart-pointers/listing-15-24/output.txt
new file mode 100644
index 00000000..bfe217bf
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-24/output.txt
@@ -0,0 +1,7 @@
+$ cargo run
+   Compiling cons-list v0.1.0 (file:///projects/cons-list)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.63s
+     Running `target/debug/cons-list`
+a after = Cons(RefCell { value: 15 }, Nil)
+b after = Cons(RefCell { value: 6 }, Cons(RefCell { value: 15 }, Nil))
+c after = Cons(RefCell { value: 10 }, Cons(RefCell { value: 15 }, Nil))
diff --git a/listings/ch15-smart-pointers/listing-15-24/src/main.rs b/listings/ch15-smart-pointers/listing-15-24/src/main.rs
new file mode 100644
index 00000000..cd3717fc
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-24/src/main.rs
@@ -0,0 +1,24 @@
+#[derive(Debug)]
+enum List {
+    Cons(Rc<RefCell<i32>>, Rc<List>),
+    Nil,
+}
+
+use crate::List::{Cons, Nil};
+use std::rc::Rc;
+use std::cell::RefCell;
+
+fn main() {
+    let value = Rc::new(RefCell::new(5));
+
+    let a = Rc::new(Cons(Rc::clone(&value), Rc::new(Nil)));
+
+    let b = Cons(Rc::new(RefCell::new(6)), Rc::clone(&a));
+    let c = Cons(Rc::new(RefCell::new(10)), Rc::clone(&a));
+
+    *value.borrow_mut() += 10;
+
+    println!("a after = {:?}", a);
+    println!("b after = {:?}", b);
+    println!("c after = {:?}", c);
+}
diff --git a/listings/ch15-smart-pointers/listing-15-25/Cargo.lock b/listings/ch15-smart-pointers/listing-15-25/Cargo.lock
new file mode 100644
index 00000000..94cd138b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-25/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cons-list"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-25/Cargo.toml b/listings/ch15-smart-pointers/listing-15-25/Cargo.toml
new file mode 100644
index 00000000..86c8e956
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-25/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cons-list"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-25/src/main.rs b/listings/ch15-smart-pointers/listing-15-25/src/main.rs
new file mode 100644
index 00000000..3829d0bd
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-25/src/main.rs
@@ -0,0 +1,20 @@
+use std::rc::Rc;
+use std::cell::RefCell;
+use crate::List::{Cons, Nil};
+
+#[derive(Debug)]
+enum List {
+    Cons(i32, RefCell<Rc<List>>),
+    Nil,
+}
+
+impl List {
+    fn tail(&self) -> Option<&RefCell<Rc<List>>> {
+        match self {
+            Cons(_, item) => Some(item),
+            Nil => None,
+        }
+    }
+}
+
+fn main() {}
diff --git a/listings/ch15-smart-pointers/listing-15-26/Cargo.lock b/listings/ch15-smart-pointers/listing-15-26/Cargo.lock
new file mode 100644
index 00000000..94cd138b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-26/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "cons-list"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-26/Cargo.toml b/listings/ch15-smart-pointers/listing-15-26/Cargo.toml
new file mode 100644
index 00000000..86c8e956
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-26/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cons-list"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-26/output.txt b/listings/ch15-smart-pointers/listing-15-26/output.txt
new file mode 100644
index 00000000..8b8eb40b
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-26/output.txt
@@ -0,0 +1,11 @@
+$ cargo run
+   Compiling cons-list v0.1.0 (file:///projects/cons-list)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.53s
+     Running `target/debug/cons-list`
+a initial rc count = 1
+a next item = Some(RefCell { value: Nil })
+a rc count after b creation = 2
+b initial rc count = 1
+b next item = Some(RefCell { value: Cons(5, RefCell { value: Nil }) })
+b rc count after changing a = 2
+a rc count after changing a = 2
diff --git a/listings/ch15-smart-pointers/listing-15-26/src/main.rs b/listings/ch15-smart-pointers/listing-15-26/src/main.rs
new file mode 100644
index 00000000..128c4626
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-26/src/main.rs
@@ -0,0 +1,44 @@
+use std::rc::Rc;
+use std::cell::RefCell;
+use crate::List::{Cons, Nil};
+
+#[derive(Debug)]
+enum List {
+    Cons(i32, RefCell<Rc<List>>),
+    Nil,
+}
+
+impl List {
+    fn tail(&self) -> Option<&RefCell<Rc<List>>> {
+        match self {
+            Cons(_, item) => Some(item),
+            Nil => None,
+        }
+    }
+}
+
+// ANCHOR: here
+fn main() {
+    let a = Rc::new(Cons(5, RefCell::new(Rc::new(Nil))));
+
+    println!("a initial rc count = {}", Rc::strong_count(&a));
+    println!("a next item = {:?}", a.tail());
+
+    let b = Rc::new(Cons(10, RefCell::new(Rc::clone(&a))));
+
+    println!("a rc count after b creation = {}", Rc::strong_count(&a));
+    println!("b initial rc count = {}", Rc::strong_count(&b));
+    println!("b next item = {:?}", b.tail());
+
+    if let Some(link) = a.tail() {
+        *link.borrow_mut() = Rc::clone(&b);
+    }
+
+    println!("b rc count after changing a = {}", Rc::strong_count(&b));
+    println!("a rc count after changing a = {}", Rc::strong_count(&a));
+
+    // Uncomment the next line to see that we have a cycle;
+    // it will overflow the stack
+    // println!("a next item = {:?}", a.tail());
+}
+// ANCHOR_END: here
diff --git a/listings/ch15-smart-pointers/listing-15-27/Cargo.lock b/listings/ch15-smart-pointers/listing-15-27/Cargo.lock
new file mode 100644
index 00000000..955b7e0f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-27/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "tree"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-27/Cargo.toml b/listings/ch15-smart-pointers/listing-15-27/Cargo.toml
new file mode 100644
index 00000000..d6774b81
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-27/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "tree"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-27/src/main.rs b/listings/ch15-smart-pointers/listing-15-27/src/main.rs
new file mode 100644
index 00000000..8bd71f92
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-27/src/main.rs
@@ -0,0 +1,24 @@
+// ANCHOR: here
+use std::rc::Rc;
+use std::cell::RefCell;
+
+#[derive(Debug)]
+struct Node {
+    value: i32,
+    children: RefCell<Vec<Rc<Node>>>,
+}
+// ANCHOR_END: here
+
+// ANCHOR: there
+fn main() {
+    let leaf = Rc::new(Node {
+        value: 3,
+        children: RefCell::new(vec![]),
+    });
+
+    let branch = Rc::new(Node {
+        value: 5,
+        children: RefCell::new(vec![Rc::clone(&leaf)]),
+    });
+}
+// ANCHOR_END: there
diff --git a/listings/ch15-smart-pointers/listing-15-28/Cargo.lock b/listings/ch15-smart-pointers/listing-15-28/Cargo.lock
new file mode 100644
index 00000000..955b7e0f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-28/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "tree"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-28/Cargo.toml b/listings/ch15-smart-pointers/listing-15-28/Cargo.toml
new file mode 100644
index 00000000..d6774b81
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-28/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "tree"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-28/src/main.rs b/listings/ch15-smart-pointers/listing-15-28/src/main.rs
new file mode 100644
index 00000000..3181f591
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-28/src/main.rs
@@ -0,0 +1,33 @@
+// ANCHOR: here
+use std::rc::{Rc, Weak};
+use std::cell::RefCell;
+
+#[derive(Debug)]
+struct Node {
+    value: i32,
+    parent: RefCell<Weak<Node>>,
+    children: RefCell<Vec<Rc<Node>>>,
+}
+// ANCHOR_END: here
+
+// ANCHOR: there
+fn main() {
+    let leaf = Rc::new(Node {
+        value: 3,
+        parent: RefCell::new(Weak::new()),
+        children: RefCell::new(vec![]),
+    });
+
+    println!("leaf parent = {:?}", leaf.parent.borrow().upgrade());
+
+    let branch = Rc::new(Node {
+        value: 5,
+        parent: RefCell::new(Weak::new()),
+        children: RefCell::new(vec![Rc::clone(&leaf)]),
+    });
+
+    *leaf.parent.borrow_mut() = Rc::downgrade(&branch);
+
+    println!("leaf parent = {:?}", leaf.parent.borrow().upgrade());
+}
+// ANCHOR_END: there
diff --git a/listings/ch15-smart-pointers/listing-15-29/Cargo.lock b/listings/ch15-smart-pointers/listing-15-29/Cargo.lock
new file mode 100644
index 00000000..955b7e0f
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-29/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "tree"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/listing-15-29/Cargo.toml b/listings/ch15-smart-pointers/listing-15-29/Cargo.toml
new file mode 100644
index 00000000..d6774b81
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-29/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "tree"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/listing-15-29/src/main.rs b/listings/ch15-smart-pointers/listing-15-29/src/main.rs
new file mode 100644
index 00000000..b87447d5
--- /dev/null
+++ b/listings/ch15-smart-pointers/listing-15-29/src/main.rs
@@ -0,0 +1,54 @@
+use std::rc::{Rc, Weak};
+use std::cell::RefCell;
+
+#[derive(Debug)]
+struct Node {
+    value: i32,
+    parent: RefCell<Weak<Node>>,
+    children: RefCell<Vec<Rc<Node>>>,
+}
+
+// ANCHOR: here
+fn main() {
+    let leaf = Rc::new(Node {
+        value: 3,
+        parent: RefCell::new(Weak::new()),
+        children: RefCell::new(vec![]),
+    });
+
+    println!(
+        "leaf strong = {}, weak = {}",
+        Rc::strong_count(&leaf),
+        Rc::weak_count(&leaf),
+    );
+
+    {
+        let branch = Rc::new(Node {
+            value: 5,
+            parent: RefCell::new(Weak::new()),
+            children: RefCell::new(vec![Rc::clone(&leaf)]),
+        });
+
+        *leaf.parent.borrow_mut() = Rc::downgrade(&branch);
+
+        println!(
+            "branch strong = {}, weak = {}",
+            Rc::strong_count(&branch),
+            Rc::weak_count(&branch),
+        );
+
+        println!(
+            "leaf strong = {}, weak = {}",
+            Rc::strong_count(&leaf),
+            Rc::weak_count(&leaf),
+        );
+    }
+
+    println!("leaf parent = {:?}", leaf.parent.borrow().upgrade());
+    println!(
+        "leaf strong = {}, weak = {}",
+        Rc::strong_count(&leaf),
+        Rc::weak_count(&leaf),
+    );
+}
+// ANCHOR_END: here
diff --git a/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/Cargo.lock b/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/Cargo.lock
new file mode 100644
index 00000000..3c5deedf
--- /dev/null
+++ b/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "borrowing"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/Cargo.toml b/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/Cargo.toml
new file mode 100644
index 00000000..1558eb61
--- /dev/null
+++ b/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "borrowing"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/output.txt b/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/output.txt
new file mode 100644
index 00000000..d28ea466
--- /dev/null
+++ b/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/output.txt
@@ -0,0 +1,16 @@
+$ cargo run
+   Compiling borrowing v0.1.0 (file:///projects/borrowing)
+error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable
+ --> src/main.rs:3:13
+  |
+2 |     let x = 5;
+  |         - help: consider changing this to be mutable: `mut x`
+3 |     let y = &mut x;
+  |             ^^^^^^ cannot borrow as mutable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0596`.
+error: Could not compile `borrowing`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/src/main.rs b/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/src/main.rs
new file mode 100644
index 00000000..8f48d41c
--- /dev/null
+++ b/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/src/main.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let x = 5;
+    let y = &mut x;
+}
diff --git a/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/Cargo.lock b/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/Cargo.lock
new file mode 100644
index 00000000..4d76558f
--- /dev/null
+++ b/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "deref-example"
+version = "0.1.0"
+
diff --git a/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/Cargo.toml b/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/Cargo.toml
new file mode 100644
index 00000000..2a9630fe
--- /dev/null
+++ b/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "deref-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/output.txt b/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/output.txt
new file mode 100644
index 00000000..ca43de24
--- /dev/null
+++ b/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/output.txt
@@ -0,0 +1,17 @@
+$ cargo run
+   Compiling deref-example v0.1.0 (file:///projects/deref-example)
+error[E0277]: can't compare `{integer}` with `&{integer}`
+ --> src/main.rs:6:5
+  |
+6 |     assert_eq!(5, y);
+  |     ^^^^^^^^^^^^^^^^^ no implementation for `{integer} == &{integer}`
+  |
+  = help: the trait `std::cmp::PartialEq<&{integer}>` is not implemented for `{integer}`
+  = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
+error: Could not compile `deref-example`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/src/main.rs b/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/src/main.rs
new file mode 100644
index 00000000..4e20cae0
--- /dev/null
+++ b/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    let x = 5;
+    let y = &x;
+
+    assert_eq!(5, x);
+    assert_eq!(5, y);
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-01/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-01/Cargo.lock
new file mode 100644
index 00000000..4685c131
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "threads"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-01/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-01/Cargo.toml
new file mode 100644
index 00000000..68a31e10
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "threads"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-01/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-01/src/main.rs
new file mode 100644
index 00000000..6305a98e
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-01/src/main.rs
@@ -0,0 +1,16 @@
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    thread::spawn(|| {
+        for i in 1..10 {
+            println!("hi number {} from the spawned thread!", i);
+            thread::sleep(Duration::from_millis(1));
+        }
+    });
+
+    for i in 1..5 {
+        println!("hi number {} from the main thread!", i);
+        thread::sleep(Duration::from_millis(1));
+    }
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-02/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-02/Cargo.lock
new file mode 100644
index 00000000..4685c131
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "threads"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-02/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-02/Cargo.toml
new file mode 100644
index 00000000..68a31e10
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "threads"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-02/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-02/src/main.rs
new file mode 100644
index 00000000..e37607f1
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-02/src/main.rs
@@ -0,0 +1,18 @@
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let handle = thread::spawn(|| {
+        for i in 1..10 {
+            println!("hi number {} from the spawned thread!", i);
+            thread::sleep(Duration::from_millis(1));
+        }
+    });
+
+    for i in 1..5 {
+        println!("hi number {} from the main thread!", i);
+        thread::sleep(Duration::from_millis(1));
+    }
+
+    handle.join().unwrap();
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-03/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-03/Cargo.lock
new file mode 100644
index 00000000..4685c131
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "threads"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-03/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-03/Cargo.toml
new file mode 100644
index 00000000..68a31e10
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "threads"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-03/output.txt b/listings/ch16-fearless-concurrency/listing-16-03/output.txt
new file mode 100644
index 00000000..4eb76cc4
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-03/output.txt
@@ -0,0 +1,29 @@
+$ cargo run
+   Compiling threads v0.1.0 (file:///projects/threads)
+error[E0373]: closure may outlive the current function, but it borrows `v`, which is owned by the current function
+ --> src/main.rs:6:32
+  |
+6 |     let handle = thread::spawn(|| {
+  |                                ^^ may outlive borrowed value `v`
+7 |         println!("Here's a vector: {:?}", v);
+  |                                           - `v` is borrowed here
+  |
+note: function requires argument type to outlive `'static`
+ --> src/main.rs:6:18
+  |
+6 |       let handle = thread::spawn(|| {
+  |  __________________^
+7 | |         println!("Here's a vector: {:?}", v);
+8 | |     });
+  | |______^
+help: to force the closure to take ownership of `v` (and any other referenced variables), use the `move` keyword
+  |
+6 |     let handle = thread::spawn(move || {
+  |                                ^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0373`.
+error: Could not compile `threads`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch16-fearless-concurrency/listing-16-03/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-03/src/main.rs
new file mode 100644
index 00000000..defc8764
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-03/src/main.rs
@@ -0,0 +1,11 @@
+use std::thread;
+
+fn main() {
+    let v = vec![1, 2, 3];
+
+    let handle = thread::spawn(|| {
+        println!("Here's a vector: {:?}", v);
+    });
+
+    handle.join().unwrap();
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-04/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-04/Cargo.lock
new file mode 100644
index 00000000..4685c131
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "threads"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-04/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-04/Cargo.toml
new file mode 100644
index 00000000..68a31e10
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "threads"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-04/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-04/src/main.rs
new file mode 100644
index 00000000..0bccc5f5
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-04/src/main.rs
@@ -0,0 +1,13 @@
+use std::thread;
+
+fn main() {
+    let v = vec![1, 2, 3];
+
+    let handle = thread::spawn(|| {
+        println!("Here's a vector: {:?}", v);
+    });
+
+    drop(v); // oh no!
+
+    handle.join().unwrap();
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-05/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-05/Cargo.lock
new file mode 100644
index 00000000..4685c131
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "threads"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-05/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-05/Cargo.toml
new file mode 100644
index 00000000..68a31e10
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "threads"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-05/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-05/src/main.rs
new file mode 100644
index 00000000..a6547dc4
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-05/src/main.rs
@@ -0,0 +1,11 @@
+use std::thread;
+
+fn main() {
+    let v = vec![1, 2, 3];
+
+    let handle = thread::spawn(move || {
+        println!("Here's a vector: {:?}", v);
+    });
+
+    handle.join().unwrap();
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-06/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-06/Cargo.lock
new file mode 100644
index 00000000..dfa06e2a
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "message-passing"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-06/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-06/Cargo.toml
new file mode 100644
index 00000000..8fd8808e
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "message-passing"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-06/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-06/src/main.rs
new file mode 100644
index 00000000..d80dac4a
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-06/src/main.rs
@@ -0,0 +1,5 @@
+use std::sync::mpsc;
+
+fn main() {
+    let (tx, rx) = mpsc::channel();
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-07/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-07/Cargo.lock
new file mode 100644
index 00000000..dfa06e2a
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "message-passing"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-07/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-07/Cargo.toml
new file mode 100644
index 00000000..8fd8808e
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "message-passing"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-07/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-07/src/main.rs
new file mode 100644
index 00000000..40da8014
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-07/src/main.rs
@@ -0,0 +1,11 @@
+use std::thread;
+use std::sync::mpsc;
+
+fn main() {
+    let (tx, rx) = mpsc::channel();
+
+    thread::spawn(move || {
+        let val = String::from("hi");
+        tx.send(val).unwrap();
+    });
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-08/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-08/Cargo.lock
new file mode 100644
index 00000000..dfa06e2a
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "message-passing"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-08/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-08/Cargo.toml
new file mode 100644
index 00000000..8fd8808e
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "message-passing"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-08/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-08/src/main.rs
new file mode 100644
index 00000000..bd950652
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-08/src/main.rs
@@ -0,0 +1,14 @@
+use std::thread;
+use std::sync::mpsc;
+
+fn main() {
+    let (tx, rx) = mpsc::channel();
+
+    thread::spawn(move || {
+        let val = String::from("hi");
+        tx.send(val).unwrap();
+    });
+
+    let received = rx.recv().unwrap();
+    println!("Got: {}", received);
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-09/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-09/Cargo.lock
new file mode 100644
index 00000000..dfa06e2a
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "message-passing"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-09/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-09/Cargo.toml
new file mode 100644
index 00000000..8fd8808e
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "message-passing"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-09/output.txt b/listings/ch16-fearless-concurrency/listing-16-09/output.txt
new file mode 100644
index 00000000..244f4462
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-09/output.txt
@@ -0,0 +1,18 @@
+$ cargo run
+   Compiling message-passing v0.1.0 (file:///projects/message-passing)
+error[E0382]: borrow of moved value: `val`
+  --> src/main.rs:10:31
+   |
+8  |         let val = String::from("hi");
+   |             --- move occurs because `val` has type `std::string::String`, which does not implement the `Copy` trait
+9  |         tx.send(val).unwrap();
+   |                 --- value moved here
+10 |         println!("val is {}", val);
+   |                               ^^^ value borrowed here after move
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0382`.
+error: Could not compile `message-passing`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch16-fearless-concurrency/listing-16-09/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-09/src/main.rs
new file mode 100644
index 00000000..1d87a5ef
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-09/src/main.rs
@@ -0,0 +1,15 @@
+use std::thread;
+use std::sync::mpsc;
+
+fn main() {
+    let (tx, rx) = mpsc::channel();
+
+    thread::spawn(move || {
+        let val = String::from("hi");
+        tx.send(val).unwrap();
+        println!("val is {}", val);
+    });
+
+    let received = rx.recv().unwrap();
+    println!("Got: {}", received);
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-10/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-10/Cargo.lock
new file mode 100644
index 00000000..dfa06e2a
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "message-passing"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-10/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-10/Cargo.toml
new file mode 100644
index 00000000..8fd8808e
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "message-passing"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-10/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-10/src/main.rs
new file mode 100644
index 00000000..fb0b042f
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-10/src/main.rs
@@ -0,0 +1,25 @@
+use std::thread;
+use std::sync::mpsc;
+use std::time::Duration;
+
+fn main() {
+    let (tx, rx) = mpsc::channel();
+
+    thread::spawn(move || {
+        let vals = vec![
+            String::from("hi"),
+            String::from("from"),
+            String::from("the"),
+            String::from("thread"),
+        ];
+
+        for val in vals {
+            tx.send(val).unwrap();
+            thread::sleep(Duration::from_secs(1));
+        }
+    });
+
+    for received in rx {
+        println!("Got: {}", received);
+    }
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-11/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-11/Cargo.lock
new file mode 100644
index 00000000..dfa06e2a
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "message-passing"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-11/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-11/Cargo.toml
new file mode 100644
index 00000000..8fd8808e
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "message-passing"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-11/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-11/src/main.rs
new file mode 100644
index 00000000..be335c47
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-11/src/main.rs
@@ -0,0 +1,46 @@
+use std::thread;
+use std::sync::mpsc;
+use std::time::Duration;
+
+fn main() {
+    // ANCHOR: here
+    // --snip--
+
+    let (tx, rx) = mpsc::channel();
+
+    let tx1 = mpsc::Sender::clone(&tx);
+    thread::spawn(move || {
+        let vals = vec![
+            String::from("hi"),
+            String::from("from"),
+            String::from("the"),
+            String::from("thread"),
+        ];
+
+        for val in vals {
+            tx1.send(val).unwrap();
+            thread::sleep(Duration::from_secs(1));
+        }
+    });
+
+    thread::spawn(move || {
+        let vals = vec![
+            String::from("more"),
+            String::from("messages"),
+            String::from("for"),
+            String::from("you"),
+        ];
+
+        for val in vals {
+            tx.send(val).unwrap();
+            thread::sleep(Duration::from_secs(1));
+        }
+    });
+
+    for received in rx {
+        println!("Got: {}", received);
+    }
+
+    // --snip--
+    // ANCHOR_END: here
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-12/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-12/Cargo.lock
new file mode 100644
index 00000000..c834c230
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "shared-state"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-12/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-12/Cargo.toml
new file mode 100644
index 00000000..e7c75ac9
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "shared-state"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-12/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-12/src/main.rs
new file mode 100644
index 00000000..0c0d6767
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-12/src/main.rs
@@ -0,0 +1,12 @@
+use std::sync::Mutex;
+
+fn main() {
+    let m = Mutex::new(5);
+
+    {
+        let mut num = m.lock().unwrap();
+        *num = 6;
+    }
+
+    println!("m = {:?}", m);
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-13/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-13/Cargo.lock
new file mode 100644
index 00000000..c834c230
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "shared-state"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-13/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-13/Cargo.toml
new file mode 100644
index 00000000..e7c75ac9
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "shared-state"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-13/output.txt b/listings/ch16-fearless-concurrency/listing-16-13/output.txt
new file mode 100644
index 00000000..b86048b9
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-13/output.txt
@@ -0,0 +1,19 @@
+$ cargo run
+   Compiling shared-state v0.1.0 (file:///projects/shared-state)
+error[E0382]: use of moved value: `counter`
+  --> src/main.rs:9:36
+   |
+5  |     let counter = Mutex::new(0);
+   |         ------- move occurs because `counter` has type `std::sync::Mutex<i32>`, which does not implement the `Copy` trait
+...
+9  |         let handle = thread::spawn(move || {
+   |                                    ^^^^^^^ value moved into closure here, in previous iteration of loop
+10 |             let mut num = counter.lock().unwrap();
+   |                           ------- use occurs due to use in closure
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0382`.
+error: Could not compile `shared-state`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch16-fearless-concurrency/listing-16-13/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-13/src/main.rs
new file mode 100644
index 00000000..4e380a59
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-13/src/main.rs
@@ -0,0 +1,22 @@
+use std::sync::Mutex;
+use std::thread;
+
+fn main() {
+    let counter = Mutex::new(0);
+    let mut handles = vec![];
+
+    for _ in 0..10 {
+        let handle = thread::spawn(move || {
+            let mut num = counter.lock().unwrap();
+
+            *num += 1;
+        });
+        handles.push(handle);
+    }
+
+    for handle in handles {
+        handle.join().unwrap();
+    }
+
+    println!("Result: {}", *counter.lock().unwrap());
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-14/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-14/Cargo.lock
new file mode 100644
index 00000000..c834c230
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "shared-state"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-14/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-14/Cargo.toml
new file mode 100644
index 00000000..e7c75ac9
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "shared-state"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-14/output.txt b/listings/ch16-fearless-concurrency/listing-16-14/output.txt
new file mode 100644
index 00000000..04ccf50d
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-14/output.txt
@@ -0,0 +1,18 @@
+$ cargo run
+   Compiling shared-state v0.1.0 (file:///projects/shared-state)
+error[E0277]: `std::rc::Rc<std::sync::Mutex<i32>>` cannot be sent between threads safely
+  --> src/main.rs:11:22
+   |
+11 |         let handle = thread::spawn(move || {
+   |                      ^^^^^^^^^^^^^ `std::rc::Rc<std::sync::Mutex<i32>>` cannot be sent between threads safely
+   |
+   = help: within `[closure@src/main.rs:11:36: 15:10 counter:std::rc::Rc<std::sync::Mutex<i32>>]`, the trait `std::marker::Send` is not implemented for `std::rc::Rc<std::sync::Mutex<i32>>`
+   = note: required because it appears within the type `[closure@src/main.rs:11:36: 15:10 counter:std::rc::Rc<std::sync::Mutex<i32>>]`
+   = note: required by `std::thread::spawn`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
+error: Could not compile `shared-state`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch16-fearless-concurrency/listing-16-14/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-14/src/main.rs
new file mode 100644
index 00000000..d940b1a3
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-14/src/main.rs
@@ -0,0 +1,24 @@
+use std::rc::Rc;
+use std::sync::Mutex;
+use std::thread;
+
+fn main() {
+    let counter = Rc::new(Mutex::new(0));
+    let mut handles = vec![];
+
+    for _ in 0..10 {
+        let counter = Rc::clone(&counter);
+        let handle = thread::spawn(move || {
+            let mut num = counter.lock().unwrap();
+
+            *num += 1;
+        });
+        handles.push(handle);
+    }
+
+    for handle in handles {
+        handle.join().unwrap();
+    }
+
+    println!("Result: {}", *counter.lock().unwrap());
+}
diff --git a/listings/ch16-fearless-concurrency/listing-16-15/Cargo.lock b/listings/ch16-fearless-concurrency/listing-16-15/Cargo.lock
new file mode 100644
index 00000000..c834c230
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "shared-state"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/listing-16-15/Cargo.toml b/listings/ch16-fearless-concurrency/listing-16-15/Cargo.toml
new file mode 100644
index 00000000..e7c75ac9
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "shared-state"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/listing-16-15/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-15/src/main.rs
new file mode 100644
index 00000000..589c6b47
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/listing-16-15/src/main.rs
@@ -0,0 +1,23 @@
+use std::sync::{Mutex, Arc};
+use std::thread;
+
+fn main() {
+    let counter = Arc::new(Mutex::new(0));
+    let mut handles = vec![];
+
+    for _ in 0..10 {
+        let counter = Arc::clone(&counter);
+        let handle = thread::spawn(move || {
+            let mut num = counter.lock().unwrap();
+
+            *num += 1;
+        });
+        handles.push(handle);
+    }
+
+    for handle in handles {
+        handle.join().unwrap();
+    }
+
+    println!("Result: {}", *counter.lock().unwrap());
+}
diff --git a/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/Cargo.lock b/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/Cargo.lock
new file mode 100644
index 00000000..4685c131
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "threads"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/Cargo.toml b/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/Cargo.toml
new file mode 100644
index 00000000..68a31e10
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "threads"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/src/main.rs b/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/src/main.rs
new file mode 100644
index 00000000..6205e57d
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/src/main.rs
@@ -0,0 +1,18 @@
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let handle = thread::spawn(|| {
+        for i in 1..10 {
+            println!("hi number {} from the spawned thread!", i);
+            thread::sleep(Duration::from_millis(1));
+        }
+    });
+
+    handle.join().unwrap();
+
+    for i in 1..5 {
+        println!("hi number {} from the main thread!", i);
+        thread::sleep(Duration::from_millis(1));
+    }
+}
diff --git a/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.lock b/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.lock
new file mode 100644
index 00000000..c834c230
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "shared-state"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.toml b/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.toml
new file mode 100644
index 00000000..e7c75ac9
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "shared-state"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/src/main.rs b/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/src/main.rs
new file mode 100644
index 00000000..dbb13977
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/no-listing-02-no-loop-to-understand-error/src/main.rs
@@ -0,0 +1,27 @@
+use std::sync::Mutex;
+use std::thread;
+
+fn main() {
+    let counter = Mutex::new(0);
+    let mut handles = vec![];
+
+    let handle = thread::spawn(move || {
+        let mut num = counter.lock().unwrap();
+
+        *num += 1;
+    });
+    handles.push(handle);
+
+    let handle2 = thread::spawn(move || {
+        let mut num2 = counter.lock().unwrap();
+
+        *num2 += 1;
+    });
+    handles.push(handle2);
+
+    for handle in handles {
+        handle.join().unwrap();
+    }
+
+    println!("Result: {}", *counter.lock().unwrap());
+}
diff --git a/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.lock b/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.lock
new file mode 100644
index 00000000..4685c131
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "threads"
+version = "0.1.0"
+
diff --git a/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.toml b/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.toml
new file mode 100644
index 00000000..68a31e10
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "threads"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt b/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt
new file mode 100644
index 00000000..099fae22
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt
@@ -0,0 +1,22 @@
+$ cargo run
+   Compiling threads v0.1.0 (file:///projects/threads)
+error[E0382]: use of moved value: `v`
+  --> src/main.rs:10:10
+   |
+4  |     let v = vec![1, 2, 3];
+   |         - move occurs because `v` has type `std::vec::Vec<i32>`, which does not implement the `Copy` trait
+5  | 
+6  |     let handle = thread::spawn(move || {
+   |                                ------- value moved into closure here
+7  |         println!("Here's a vector: {:?}", v);
+   |                                           - variable moved due to use in closure
+...
+10 |     drop(v); // oh no!
+   |          ^ value used here after move
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0382`.
+error: Could not compile `threads`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch16-fearless-concurrency/output-only-01-move-drop/src/main.rs b/listings/ch16-fearless-concurrency/output-only-01-move-drop/src/main.rs
new file mode 100644
index 00000000..70f659c5
--- /dev/null
+++ b/listings/ch16-fearless-concurrency/output-only-01-move-drop/src/main.rs
@@ -0,0 +1,13 @@
+use std::thread;
+
+fn main() {
+    let v = vec![1, 2, 3];
+
+    let handle = thread::spawn(move || {
+        println!("Here's a vector: {:?}", v);
+    });
+
+    drop(v); // oh no!
+
+    handle.join().unwrap();
+}
diff --git a/listings/ch17-oop/listing-17-01/Cargo.lock b/listings/ch17-oop/listing-17-01/Cargo.lock
new file mode 100644
index 00000000..620ef985
--- /dev/null
+++ b/listings/ch17-oop/listing-17-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "averaged-collection"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-01/Cargo.toml b/listings/ch17-oop/listing-17-01/Cargo.toml
new file mode 100644
index 00000000..ab96488d
--- /dev/null
+++ b/listings/ch17-oop/listing-17-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "averaged-collection"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-01/src/lib.rs b/listings/ch17-oop/listing-17-01/src/lib.rs
new file mode 100644
index 00000000..b5ce2ab6
--- /dev/null
+++ b/listings/ch17-oop/listing-17-01/src/lib.rs
@@ -0,0 +1,4 @@
+pub struct AveragedCollection {
+    list: Vec<i32>,
+    average: f64,
+}
diff --git a/listings/ch17-oop/listing-17-02/Cargo.lock b/listings/ch17-oop/listing-17-02/Cargo.lock
new file mode 100644
index 00000000..620ef985
--- /dev/null
+++ b/listings/ch17-oop/listing-17-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "averaged-collection"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-02/Cargo.toml b/listings/ch17-oop/listing-17-02/Cargo.toml
new file mode 100644
index 00000000..ab96488d
--- /dev/null
+++ b/listings/ch17-oop/listing-17-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "averaged-collection"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-02/src/lib.rs b/listings/ch17-oop/listing-17-02/src/lib.rs
new file mode 100644
index 00000000..57812324
--- /dev/null
+++ b/listings/ch17-oop/listing-17-02/src/lib.rs
@@ -0,0 +1,33 @@
+pub struct AveragedCollection {
+    list: Vec<i32>,
+    average: f64,
+}
+
+// ANCHOR: here
+impl AveragedCollection {
+    pub fn add(&mut self, value: i32) {
+        self.list.push(value);
+        self.update_average();
+    }
+
+    pub fn remove(&mut self) -> Option<i32> {
+        let result = self.list.pop();
+        match result {
+            Some(value) => {
+                self.update_average();
+                Some(value)
+            },
+            None => None,
+        }
+    }
+
+    pub fn average(&self) -> f64 {
+        self.average
+    }
+
+    fn update_average(&mut self) {
+        let total: i32 = self.list.iter().sum();
+        self.average = total as f64 / self.list.len() as f64;
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch17-oop/listing-17-03/Cargo.toml b/listings/ch17-oop/listing-17-03/Cargo.toml
new file mode 100644
index 00000000..1f61cd20
--- /dev/null
+++ b/listings/ch17-oop/listing-17-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "gui"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-03/src/lib.rs b/listings/ch17-oop/listing-17-03/src/lib.rs
new file mode 100644
index 00000000..3a5cb779
--- /dev/null
+++ b/listings/ch17-oop/listing-17-03/src/lib.rs
@@ -0,0 +1,3 @@
+pub trait Draw {
+    fn draw(&self);
+}
diff --git a/listings/ch17-oop/listing-17-04/Cargo.lock b/listings/ch17-oop/listing-17-04/Cargo.lock
new file mode 100644
index 00000000..7f58b0ba
--- /dev/null
+++ b/listings/ch17-oop/listing-17-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "gui"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-04/Cargo.toml b/listings/ch17-oop/listing-17-04/Cargo.toml
new file mode 100644
index 00000000..1f61cd20
--- /dev/null
+++ b/listings/ch17-oop/listing-17-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "gui"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-04/src/lib.rs b/listings/ch17-oop/listing-17-04/src/lib.rs
new file mode 100644
index 00000000..0c45e2a6
--- /dev/null
+++ b/listings/ch17-oop/listing-17-04/src/lib.rs
@@ -0,0 +1,9 @@
+pub trait Draw {
+    fn draw(&self);
+}
+
+// ANCHOR: here
+pub struct Screen {
+    pub components: Vec<Box<dyn Draw>>,
+}
+// ANCHOR_END: here
diff --git a/listings/ch17-oop/listing-17-05/Cargo.lock b/listings/ch17-oop/listing-17-05/Cargo.lock
new file mode 100644
index 00000000..7f58b0ba
--- /dev/null
+++ b/listings/ch17-oop/listing-17-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "gui"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-05/Cargo.toml b/listings/ch17-oop/listing-17-05/Cargo.toml
new file mode 100644
index 00000000..1f61cd20
--- /dev/null
+++ b/listings/ch17-oop/listing-17-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "gui"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-05/src/lib.rs b/listings/ch17-oop/listing-17-05/src/lib.rs
new file mode 100644
index 00000000..57ebb578
--- /dev/null
+++ b/listings/ch17-oop/listing-17-05/src/lib.rs
@@ -0,0 +1,17 @@
+pub trait Draw {
+    fn draw(&self);
+}
+
+pub struct Screen {
+    pub components: Vec<Box<dyn Draw>>,
+}
+
+// ANCHOR: here
+impl Screen {
+    pub fn run(&self) {
+        for component in self.components.iter() {
+            component.draw();
+        }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch17-oop/listing-17-06/Cargo.lock b/listings/ch17-oop/listing-17-06/Cargo.lock
new file mode 100644
index 00000000..7f58b0ba
--- /dev/null
+++ b/listings/ch17-oop/listing-17-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "gui"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-06/Cargo.toml b/listings/ch17-oop/listing-17-06/Cargo.toml
new file mode 100644
index 00000000..1f61cd20
--- /dev/null
+++ b/listings/ch17-oop/listing-17-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "gui"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-06/src/lib.rs b/listings/ch17-oop/listing-17-06/src/lib.rs
new file mode 100644
index 00000000..1abe6ea3
--- /dev/null
+++ b/listings/ch17-oop/listing-17-06/src/lib.rs
@@ -0,0 +1,18 @@
+pub trait Draw {
+    fn draw(&self);
+}
+
+// ANCHOR: here
+pub struct Screen<T: Draw> {
+    pub components: Vec<T>,
+}
+
+impl<T> Screen<T>
+    where T: Draw {
+    pub fn run(&self) {
+        for component in self.components.iter() {
+            component.draw();
+        }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch17-oop/listing-17-07/Cargo.lock b/listings/ch17-oop/listing-17-07/Cargo.lock
new file mode 100644
index 00000000..7f58b0ba
--- /dev/null
+++ b/listings/ch17-oop/listing-17-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "gui"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-07/Cargo.toml b/listings/ch17-oop/listing-17-07/Cargo.toml
new file mode 100644
index 00000000..1f61cd20
--- /dev/null
+++ b/listings/ch17-oop/listing-17-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "gui"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-07/src/lib.rs b/listings/ch17-oop/listing-17-07/src/lib.rs
new file mode 100644
index 00000000..413dc6ff
--- /dev/null
+++ b/listings/ch17-oop/listing-17-07/src/lib.rs
@@ -0,0 +1,31 @@
+pub trait Draw {
+    fn draw(&self);
+}
+
+pub struct Screen {
+    pub components: Vec<Box<dyn Draw>>,
+}
+
+impl Screen {
+    pub fn run(&self) {
+        for component in self.components.iter() {
+            component.draw();
+        }
+    }
+}
+
+// ANCHOR: here
+pub struct Button {
+    pub width: u32,
+    pub height: u32,
+    pub label: String,
+}
+
+impl Draw for Button {
+    fn draw(&self) {
+        // code to actually draw a button
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch17-oop/listing-17-08/Cargo.lock b/listings/ch17-oop/listing-17-08/Cargo.lock
new file mode 100644
index 00000000..7f58b0ba
--- /dev/null
+++ b/listings/ch17-oop/listing-17-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "gui"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-08/Cargo.toml b/listings/ch17-oop/listing-17-08/Cargo.toml
new file mode 100644
index 00000000..1f61cd20
--- /dev/null
+++ b/listings/ch17-oop/listing-17-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "gui"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-08/src/lib.rs b/listings/ch17-oop/listing-17-08/src/lib.rs
new file mode 100644
index 00000000..960fee23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-08/src/lib.rs
@@ -0,0 +1,27 @@
+pub trait Draw {
+    fn draw(&self);
+}
+
+pub struct Screen {
+    pub components: Vec<Box<dyn Draw>>,
+}
+
+impl Screen {
+    pub fn run(&self) {
+        for component in self.components.iter() {
+            component.draw();
+        }
+    }
+}
+
+pub struct Button {
+    pub width: u32,
+    pub height: u32,
+    pub label: String,
+}
+
+impl Draw for Button {
+    fn draw(&self) {
+        // code to actually draw a button
+    }
+}
diff --git a/listings/ch17-oop/listing-17-08/src/main.rs b/listings/ch17-oop/listing-17-08/src/main.rs
new file mode 100644
index 00000000..9575d407
--- /dev/null
+++ b/listings/ch17-oop/listing-17-08/src/main.rs
@@ -0,0 +1,17 @@
+// ANCHOR: here
+use gui::Draw;
+
+struct SelectBox {
+    width: u32,
+    height: u32,
+    options: Vec<String>,
+}
+
+impl Draw for SelectBox {
+    fn draw(&self) {
+        // code to actually draw a select box
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch17-oop/listing-17-09/Cargo.lock b/listings/ch17-oop/listing-17-09/Cargo.lock
new file mode 100644
index 00000000..7f58b0ba
--- /dev/null
+++ b/listings/ch17-oop/listing-17-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "gui"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-09/Cargo.toml b/listings/ch17-oop/listing-17-09/Cargo.toml
new file mode 100644
index 00000000..1f61cd20
--- /dev/null
+++ b/listings/ch17-oop/listing-17-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "gui"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-09/src/lib.rs b/listings/ch17-oop/listing-17-09/src/lib.rs
new file mode 100644
index 00000000..960fee23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-09/src/lib.rs
@@ -0,0 +1,27 @@
+pub trait Draw {
+    fn draw(&self);
+}
+
+pub struct Screen {
+    pub components: Vec<Box<dyn Draw>>,
+}
+
+impl Screen {
+    pub fn run(&self) {
+        for component in self.components.iter() {
+            component.draw();
+        }
+    }
+}
+
+pub struct Button {
+    pub width: u32,
+    pub height: u32,
+    pub label: String,
+}
+
+impl Draw for Button {
+    fn draw(&self) {
+        // code to actually draw a button
+    }
+}
diff --git a/listings/ch17-oop/listing-17-09/src/main.rs b/listings/ch17-oop/listing-17-09/src/main.rs
new file mode 100644
index 00000000..ff06f65b
--- /dev/null
+++ b/listings/ch17-oop/listing-17-09/src/main.rs
@@ -0,0 +1,40 @@
+use gui::Draw;
+
+struct SelectBox {
+    width: u32,
+    height: u32,
+    options: Vec<String>,
+}
+
+impl Draw for SelectBox {
+    fn draw(&self) {
+        // code to actually draw a select box
+    }
+}
+
+// ANCHOR: here
+use gui::{Screen, Button};
+
+fn main() {
+    let screen = Screen {
+        components: vec![
+            Box::new(SelectBox {
+                width: 75,
+                height: 10,
+                options: vec![
+                    String::from("Yes"),
+                    String::from("Maybe"),
+                    String::from("No")
+                ],
+            }),
+            Box::new(Button {
+                width: 50,
+                height: 10,
+                label: String::from("OK"),
+            }),
+        ],
+    };
+
+    screen.run();
+}
+// ANCHOR_END: here
diff --git a/listings/ch17-oop/listing-17-10/Cargo.lock b/listings/ch17-oop/listing-17-10/Cargo.lock
new file mode 100644
index 00000000..7f58b0ba
--- /dev/null
+++ b/listings/ch17-oop/listing-17-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "gui"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-10/Cargo.toml b/listings/ch17-oop/listing-17-10/Cargo.toml
new file mode 100644
index 00000000..1f61cd20
--- /dev/null
+++ b/listings/ch17-oop/listing-17-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "gui"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-10/output.txt b/listings/ch17-oop/listing-17-10/output.txt
new file mode 100644
index 00000000..5faf3ef4
--- /dev/null
+++ b/listings/ch17-oop/listing-17-10/output.txt
@@ -0,0 +1,16 @@
+$ cargo run
+   Compiling gui v0.1.0 (file:///projects/gui)
+error[E0277]: the trait bound `std::string::String: gui::Draw` is not satisfied
+ --> src/main.rs:6:13
+  |
+6 |             Box::new(String::from("Hi")),
+  |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `gui::Draw` is not implemented for `std::string::String`
+  |
+  = note: required for the cast to the object type `dyn gui::Draw`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
+error: Could not compile `gui`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch17-oop/listing-17-10/src/lib.rs b/listings/ch17-oop/listing-17-10/src/lib.rs
new file mode 100644
index 00000000..960fee23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-10/src/lib.rs
@@ -0,0 +1,27 @@
+pub trait Draw {
+    fn draw(&self);
+}
+
+pub struct Screen {
+    pub components: Vec<Box<dyn Draw>>,
+}
+
+impl Screen {
+    pub fn run(&self) {
+        for component in self.components.iter() {
+            component.draw();
+        }
+    }
+}
+
+pub struct Button {
+    pub width: u32,
+    pub height: u32,
+    pub label: String,
+}
+
+impl Draw for Button {
+    fn draw(&self) {
+        // code to actually draw a button
+    }
+}
diff --git a/listings/ch17-oop/listing-17-10/src/main.rs b/listings/ch17-oop/listing-17-10/src/main.rs
new file mode 100644
index 00000000..a8485dee
--- /dev/null
+++ b/listings/ch17-oop/listing-17-10/src/main.rs
@@ -0,0 +1,11 @@
+use gui::Screen;
+
+fn main() {
+    let screen = Screen {
+        components: vec![
+            Box::new(String::from("Hi")),
+        ],
+    };
+
+    screen.run();
+}
diff --git a/listings/ch17-oop/listing-17-11/Cargo.lock b/listings/ch17-oop/listing-17-11/Cargo.lock
new file mode 100644
index 00000000..8e793866
--- /dev/null
+++ b/listings/ch17-oop/listing-17-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "blog"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-11/Cargo.toml b/listings/ch17-oop/listing-17-11/Cargo.toml
new file mode 100644
index 00000000..9a395e23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-11/src/main.rs b/listings/ch17-oop/listing-17-11/src/main.rs
new file mode 100644
index 00000000..d99170a9
--- /dev/null
+++ b/listings/ch17-oop/listing-17-11/src/main.rs
@@ -0,0 +1,20 @@
+// ANCHOR: all
+use blog::Post;
+
+// ANCHOR: here
+fn main() {
+    let mut post = Post::new();
+
+    post.add_text("I ate a salad for lunch today");
+    assert_eq!("", post.content());
+    // ANCHOR_END: here
+
+    post.request_review();
+    assert_eq!("", post.content());
+
+    post.approve();
+    assert_eq!("I ate a salad for lunch today", post.content());
+    // ANCHOR: here
+}
+// ANCHOR_END: here
+// ANCHOR_END: all
diff --git a/listings/ch17-oop/listing-17-12/Cargo.lock b/listings/ch17-oop/listing-17-12/Cargo.lock
new file mode 100644
index 00000000..8e793866
--- /dev/null
+++ b/listings/ch17-oop/listing-17-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "blog"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-12/Cargo.toml b/listings/ch17-oop/listing-17-12/Cargo.toml
new file mode 100644
index 00000000..9a395e23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-12/src/lib.rs b/listings/ch17-oop/listing-17-12/src/lib.rs
new file mode 100644
index 00000000..b8156c39
--- /dev/null
+++ b/listings/ch17-oop/listing-17-12/src/lib.rs
@@ -0,0 +1,19 @@
+pub struct Post {
+    state: Option<Box<dyn State>>,
+    content: String,
+}
+
+impl Post {
+    pub fn new() -> Post {
+        Post {
+            state: Some(Box::new(Draft {})),
+            content: String::new(),
+        }
+    }
+}
+
+trait State {}
+
+struct Draft {}
+
+impl State for Draft {}
diff --git a/listings/ch17-oop/listing-17-12/src/main.rs b/listings/ch17-oop/listing-17-12/src/main.rs
new file mode 100644
index 00000000..14b4c082
--- /dev/null
+++ b/listings/ch17-oop/listing-17-12/src/main.rs
@@ -0,0 +1,14 @@
+use blog::Post;
+
+fn main() {
+    let mut post = Post::new();
+
+    post.add_text("I ate a salad for lunch today");
+    assert_eq!("", post.content());
+
+    post.request_review();
+    assert_eq!("", post.content());
+
+    post.approve();
+    assert_eq!("I ate a salad for lunch today", post.content());
+}
diff --git a/listings/ch17-oop/listing-17-13/Cargo.lock b/listings/ch17-oop/listing-17-13/Cargo.lock
new file mode 100644
index 00000000..8e793866
--- /dev/null
+++ b/listings/ch17-oop/listing-17-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "blog"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-13/Cargo.toml b/listings/ch17-oop/listing-17-13/Cargo.toml
new file mode 100644
index 00000000..9a395e23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-13/src/lib.rs b/listings/ch17-oop/listing-17-13/src/lib.rs
new file mode 100644
index 00000000..0ae3fa6e
--- /dev/null
+++ b/listings/ch17-oop/listing-17-13/src/lib.rs
@@ -0,0 +1,30 @@
+pub struct Post {
+    state: Option<Box<dyn State>>,
+    content: String,
+}
+
+// ANCHOR: here
+impl Post {
+    // --snip--
+    // ANCHOR_END: here
+    pub fn new() -> Post {
+        Post {
+            state: Some(Box::new(Draft {})),
+            content: String::new(),
+        }
+    }
+
+    // ANCHOR: here
+    pub fn add_text(&mut self, text: &str) {
+        self.content.push_str(text);
+    }
+}
+// ANCHOR_END: here
+
+trait State {}
+
+struct Draft {}
+
+impl State for Draft {}
+
+fn main() {}
diff --git a/listings/ch17-oop/listing-17-13/src/main.rs b/listings/ch17-oop/listing-17-13/src/main.rs
new file mode 100644
index 00000000..14b4c082
--- /dev/null
+++ b/listings/ch17-oop/listing-17-13/src/main.rs
@@ -0,0 +1,14 @@
+use blog::Post;
+
+fn main() {
+    let mut post = Post::new();
+
+    post.add_text("I ate a salad for lunch today");
+    assert_eq!("", post.content());
+
+    post.request_review();
+    assert_eq!("", post.content());
+
+    post.approve();
+    assert_eq!("I ate a salad for lunch today", post.content());
+}
diff --git a/listings/ch17-oop/listing-17-14/Cargo.lock b/listings/ch17-oop/listing-17-14/Cargo.lock
new file mode 100644
index 00000000..8e793866
--- /dev/null
+++ b/listings/ch17-oop/listing-17-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "blog"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-14/Cargo.toml b/listings/ch17-oop/listing-17-14/Cargo.toml
new file mode 100644
index 00000000..9a395e23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-14/src/lib.rs b/listings/ch17-oop/listing-17-14/src/lib.rs
new file mode 100644
index 00000000..0d010f50
--- /dev/null
+++ b/listings/ch17-oop/listing-17-14/src/lib.rs
@@ -0,0 +1,34 @@
+pub struct Post {
+    state: Option<Box<dyn State>>,
+    content: String,
+}
+
+// ANCHOR: here
+impl Post {
+    // --snip--
+    // ANCHOR_END: here
+    pub fn new() -> Post {
+        Post {
+            state: Some(Box::new(Draft {})),
+            content: String::new(),
+        }
+    }
+
+    pub fn add_text(&mut self, text: &str) {
+        self.content.push_str(text);
+    }
+
+    // ANCHOR: here
+    pub fn content(&self) -> &str {
+        ""
+    }
+}
+// ANCHOR_END: here
+
+trait State {}
+
+struct Draft {}
+
+impl State for Draft {}
+
+fn main() {}
diff --git a/listings/ch17-oop/listing-17-14/src/main.rs b/listings/ch17-oop/listing-17-14/src/main.rs
new file mode 100644
index 00000000..14b4c082
--- /dev/null
+++ b/listings/ch17-oop/listing-17-14/src/main.rs
@@ -0,0 +1,14 @@
+use blog::Post;
+
+fn main() {
+    let mut post = Post::new();
+
+    post.add_text("I ate a salad for lunch today");
+    assert_eq!("", post.content());
+
+    post.request_review();
+    assert_eq!("", post.content());
+
+    post.approve();
+    assert_eq!("I ate a salad for lunch today", post.content());
+}
diff --git a/listings/ch17-oop/listing-17-15/Cargo.lock b/listings/ch17-oop/listing-17-15/Cargo.lock
new file mode 100644
index 00000000..8e793866
--- /dev/null
+++ b/listings/ch17-oop/listing-17-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "blog"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-15/Cargo.toml b/listings/ch17-oop/listing-17-15/Cargo.toml
new file mode 100644
index 00000000..9a395e23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-15/src/lib.rs b/listings/ch17-oop/listing-17-15/src/lib.rs
new file mode 100644
index 00000000..806b4e49
--- /dev/null
+++ b/listings/ch17-oop/listing-17-15/src/lib.rs
@@ -0,0 +1,54 @@
+pub struct Post {
+    state: Option<Box<dyn State>>,
+    content: String,
+}
+
+// ANCHOR: here
+impl Post {
+    // --snip--
+    // ANCHOR_END: here
+    pub fn new() -> Post {
+        Post {
+            state: Some(Box::new(Draft {})),
+            content: String::new(),
+        }
+    }
+
+    pub fn add_text(&mut self, text: &str) {
+        self.content.push_str(text);
+    }
+
+    pub fn content(&self) -> &str {
+        ""
+    }
+
+    // ANCHOR: here
+    pub fn request_review(&mut self) {
+        if let Some(s) = self.state.take() {
+            self.state = Some(s.request_review())
+        }
+    }
+}
+
+trait State {
+    fn request_review(self: Box<Self>) -> Box<dyn State>;
+}
+
+struct Draft {}
+
+impl State for Draft {
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        Box::new(PendingReview {})
+    }
+}
+
+struct PendingReview {}
+
+impl State for PendingReview {
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch17-oop/listing-17-15/src/main.rs b/listings/ch17-oop/listing-17-15/src/main.rs
new file mode 100644
index 00000000..14b4c082
--- /dev/null
+++ b/listings/ch17-oop/listing-17-15/src/main.rs
@@ -0,0 +1,14 @@
+use blog::Post;
+
+fn main() {
+    let mut post = Post::new();
+
+    post.add_text("I ate a salad for lunch today");
+    assert_eq!("", post.content());
+
+    post.request_review();
+    assert_eq!("", post.content());
+
+    post.approve();
+    assert_eq!("I ate a salad for lunch today", post.content());
+}
diff --git a/listings/ch17-oop/listing-17-16/Cargo.lock b/listings/ch17-oop/listing-17-16/Cargo.lock
new file mode 100644
index 00000000..8e793866
--- /dev/null
+++ b/listings/ch17-oop/listing-17-16/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "blog"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-16/Cargo.toml b/listings/ch17-oop/listing-17-16/Cargo.toml
new file mode 100644
index 00000000..9a395e23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-16/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-16/src/lib.rs b/listings/ch17-oop/listing-17-16/src/lib.rs
new file mode 100644
index 00000000..92cb2981
--- /dev/null
+++ b/listings/ch17-oop/listing-17-16/src/lib.rs
@@ -0,0 +1,85 @@
+pub struct Post {
+    state: Option<Box<dyn State>>,
+    content: String,
+}
+
+// ANCHOR: here
+impl Post {
+    // --snip--
+    // ANCHOR_END: here
+    pub fn new() -> Post {
+        Post {
+            state: Some(Box::new(Draft {})),
+            content: String::new(),
+        }
+    }
+
+    pub fn add_text(&mut self, text: &str) {
+        self.content.push_str(text);
+    }
+
+    pub fn content(&self) -> &str {
+        ""
+    }
+
+    pub fn request_review(&mut self) {
+        if let Some(s) = self.state.take() {
+            self.state = Some(s.request_review())
+        }
+    }
+
+    // ANCHOR: here
+    pub fn approve(&mut self) {
+        if let Some(s) = self.state.take() {
+            self.state = Some(s.approve())
+        }
+    }
+}
+
+trait State {
+    fn request_review(self: Box<Self>) -> Box<dyn State>;
+    fn approve(self: Box<Self>) -> Box<dyn State>;
+}
+
+struct Draft {}
+
+impl State for Draft {
+    // --snip--
+    // ANCHOR_END: here
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        Box::new(PendingReview {})
+    }
+
+    // ANCHOR: here
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+}
+
+struct PendingReview {}
+
+impl State for PendingReview {
+    // --snip--
+    // ANCHOR_END: here
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+
+    // ANCHOR: here
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        Box::new(Published {})
+    }
+}
+
+struct Published {}
+
+impl State for Published {
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch17-oop/listing-17-16/src/main.rs b/listings/ch17-oop/listing-17-16/src/main.rs
new file mode 100644
index 00000000..14b4c082
--- /dev/null
+++ b/listings/ch17-oop/listing-17-16/src/main.rs
@@ -0,0 +1,14 @@
+use blog::Post;
+
+fn main() {
+    let mut post = Post::new();
+
+    post.add_text("I ate a salad for lunch today");
+    assert_eq!("", post.content());
+
+    post.request_review();
+    assert_eq!("", post.content());
+
+    post.approve();
+    assert_eq!("I ate a salad for lunch today", post.content());
+}
diff --git a/listings/ch17-oop/listing-17-17/Cargo.lock b/listings/ch17-oop/listing-17-17/Cargo.lock
new file mode 100644
index 00000000..8e793866
--- /dev/null
+++ b/listings/ch17-oop/listing-17-17/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "blog"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-17/Cargo.toml b/listings/ch17-oop/listing-17-17/Cargo.toml
new file mode 100644
index 00000000..9a395e23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-17/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-17/src/lib.rs b/listings/ch17-oop/listing-17-17/src/lib.rs
new file mode 100644
index 00000000..e514cea8
--- /dev/null
+++ b/listings/ch17-oop/listing-17-17/src/lib.rs
@@ -0,0 +1,82 @@
+pub struct Post {
+    state: Option<Box<dyn State>>,
+    content: String,
+}
+
+// ANCHOR: here
+impl Post {
+    // --snip--
+    // ANCHOR_END: here
+    pub fn new() -> Post {
+        Post {
+            state: Some(Box::new(Draft {})),
+            content: String::new(),
+        }
+    }
+
+    pub fn add_text(&mut self, text: &str) {
+        self.content.push_str(text);
+    }
+
+    // ANCHOR: here
+    pub fn content(&self) -> &str {
+        self.state.as_ref().unwrap().content(self)
+    }
+    // --snip--
+    // ANCHOR_END: here
+
+    pub fn request_review(&mut self) {
+        if let Some(s) = self.state.take() {
+            self.state = Some(s.request_review())
+        }
+    }
+
+    pub fn approve(&mut self) {
+        if let Some(s) = self.state.take() {
+            self.state = Some(s.approve())
+        }
+    }
+    // ANCHOR: here
+}
+// ANCHOR_END: here
+
+trait State {
+    fn request_review(self: Box<Self>) -> Box<dyn State>;
+    fn approve(self: Box<Self>) -> Box<dyn State>;
+}
+
+struct Draft {}
+
+impl State for Draft {
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        Box::new(PendingReview {})
+    }
+
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+}
+
+struct PendingReview {}
+
+impl State for PendingReview {
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        Box::new(Published {})
+    }
+}
+
+struct Published {}
+
+impl State for Published {
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+}
\ No newline at end of file
diff --git a/listings/ch17-oop/listing-17-17/src/main.rs b/listings/ch17-oop/listing-17-17/src/main.rs
new file mode 100644
index 00000000..14b4c082
--- /dev/null
+++ b/listings/ch17-oop/listing-17-17/src/main.rs
@@ -0,0 +1,14 @@
+use blog::Post;
+
+fn main() {
+    let mut post = Post::new();
+
+    post.add_text("I ate a salad for lunch today");
+    assert_eq!("", post.content());
+
+    post.request_review();
+    assert_eq!("", post.content());
+
+    post.approve();
+    assert_eq!("I ate a salad for lunch today", post.content());
+}
diff --git a/listings/ch17-oop/listing-17-18/Cargo.lock b/listings/ch17-oop/listing-17-18/Cargo.lock
new file mode 100644
index 00000000..8e793866
--- /dev/null
+++ b/listings/ch17-oop/listing-17-18/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "blog"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-18/Cargo.toml b/listings/ch17-oop/listing-17-18/Cargo.toml
new file mode 100644
index 00000000..9a395e23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-18/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-18/src/lib.rs b/listings/ch17-oop/listing-17-18/src/lib.rs
new file mode 100644
index 00000000..1bac8a87
--- /dev/null
+++ b/listings/ch17-oop/listing-17-18/src/lib.rs
@@ -0,0 +1,94 @@
+pub struct Post {
+    state: Option<Box<dyn State>>,
+    content: String,
+}
+
+impl Post {
+    pub fn new() -> Post {
+        Post {
+            state: Some(Box::new(Draft {})),
+            content: String::new(),
+        }
+    }
+
+    pub fn add_text(&mut self, text: &str) {
+        self.content.push_str(text);
+    }
+
+    pub fn content(&self) -> &str {
+        self.state.as_ref().unwrap().content(self)
+    }
+
+    pub fn request_review(&mut self) {
+        if let Some(s) = self.state.take() {
+            self.state = Some(s.request_review())
+        }
+    }
+
+    pub fn approve(&mut self) {
+        if let Some(s) = self.state.take() {
+            self.state = Some(s.approve())
+        }
+    }
+}
+
+// ANCHOR: here
+trait State {
+    // --snip--
+    // ANCHOR_END: here
+    fn request_review(self: Box<Self>) -> Box<dyn State>;
+    fn approve(self: Box<Self>) -> Box<dyn State>;
+
+    // ANCHOR: here
+    fn content<'a>(&self, post: &'a Post) -> &'a str {
+        ""
+    }
+}
+
+// --snip--
+// ANCHOR_END: here
+
+struct Draft {}
+
+impl State for Draft {
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        Box::new(PendingReview {})
+    }
+
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+}
+
+struct PendingReview {}
+
+impl State for PendingReview {
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        Box::new(Published {})
+    }
+}
+
+// ANCHOR: here
+struct Published {}
+
+impl State for Published {
+    // --snip--
+    // ANCHOR_END: here
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+
+    // ANCHOR: here
+    fn content<'a>(&self, post: &'a Post) -> &'a str {
+        &post.content
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch17-oop/listing-17-18/src/main.rs b/listings/ch17-oop/listing-17-18/src/main.rs
new file mode 100644
index 00000000..14b4c082
--- /dev/null
+++ b/listings/ch17-oop/listing-17-18/src/main.rs
@@ -0,0 +1,14 @@
+use blog::Post;
+
+fn main() {
+    let mut post = Post::new();
+
+    post.add_text("I ate a salad for lunch today");
+    assert_eq!("", post.content());
+
+    post.request_review();
+    assert_eq!("", post.content());
+
+    post.approve();
+    assert_eq!("I ate a salad for lunch today", post.content());
+}
diff --git a/listings/ch17-oop/listing-17-19/Cargo.lock b/listings/ch17-oop/listing-17-19/Cargo.lock
new file mode 100644
index 00000000..8e793866
--- /dev/null
+++ b/listings/ch17-oop/listing-17-19/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "blog"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-19/Cargo.toml b/listings/ch17-oop/listing-17-19/Cargo.toml
new file mode 100644
index 00000000..9a395e23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-19/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-19/src/lib.rs b/listings/ch17-oop/listing-17-19/src/lib.rs
new file mode 100644
index 00000000..bfe034ea
--- /dev/null
+++ b/listings/ch17-oop/listing-17-19/src/lib.rs
@@ -0,0 +1,25 @@
+pub struct Post {
+    content: String,
+}
+
+pub struct DraftPost {
+    content: String,
+}
+
+impl Post {
+    pub fn new() -> DraftPost {
+        DraftPost {
+            content: String::new(),
+        }
+    }
+
+    pub fn content(&self) -> &str {
+        &self.content
+    }
+}
+
+impl DraftPost {
+    pub fn add_text(&mut self, text: &str) {
+        self.content.push_str(text);
+    }
+}
diff --git a/listings/ch17-oop/listing-17-20/Cargo.lock b/listings/ch17-oop/listing-17-20/Cargo.lock
new file mode 100644
index 00000000..8e793866
--- /dev/null
+++ b/listings/ch17-oop/listing-17-20/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "blog"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-20/Cargo.toml b/listings/ch17-oop/listing-17-20/Cargo.toml
new file mode 100644
index 00000000..9a395e23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-20/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-20/src/lib.rs b/listings/ch17-oop/listing-17-20/src/lib.rs
new file mode 100644
index 00000000..3b82ec05
--- /dev/null
+++ b/listings/ch17-oop/listing-17-20/src/lib.rs
@@ -0,0 +1,48 @@
+pub struct Post {
+    content: String,
+}
+
+pub struct DraftPost {
+    content: String,
+}
+
+impl Post {
+    pub fn new() -> DraftPost {
+        DraftPost {
+            content: String::new(),
+        }
+    }
+
+    pub fn content(&self) -> &str {
+        &self.content
+    }
+}
+
+// ANCHOR: here
+impl DraftPost {
+    // --snip--
+    // ANCHOR_END: here
+    pub fn add_text(&mut self, text: &str) {
+        self.content.push_str(text);
+    }
+
+    // ANCHOR: here
+    pub fn request_review(self) -> PendingReviewPost {
+        PendingReviewPost {
+            content: self.content,
+        }
+    }
+}
+
+pub struct PendingReviewPost {
+    content: String,
+}
+
+impl PendingReviewPost {
+    pub fn approve(self) -> Post {
+        Post {
+            content: self.content,
+        }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch17-oop/listing-17-21/Cargo.lock b/listings/ch17-oop/listing-17-21/Cargo.lock
new file mode 100644
index 00000000..8e793866
--- /dev/null
+++ b/listings/ch17-oop/listing-17-21/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "blog"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/listing-17-21/Cargo.toml b/listings/ch17-oop/listing-17-21/Cargo.toml
new file mode 100644
index 00000000..9a395e23
--- /dev/null
+++ b/listings/ch17-oop/listing-17-21/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/listing-17-21/src/lib.rs b/listings/ch17-oop/listing-17-21/src/lib.rs
new file mode 100644
index 00000000..38500a65
--- /dev/null
+++ b/listings/ch17-oop/listing-17-21/src/lib.rs
@@ -0,0 +1,43 @@
+pub struct Post {
+    content: String,
+}
+
+pub struct DraftPost {
+    content: String,
+}
+
+impl Post {
+    pub fn new() -> DraftPost {
+        DraftPost {
+            content: String::new(),
+        }
+    }
+
+    pub fn content(&self) -> &str {
+        &self.content
+    }
+}
+
+impl DraftPost {
+    pub fn add_text(&mut self, text: &str) {
+        self.content.push_str(text);
+    }
+
+    pub fn request_review(self) -> PendingReviewPost {
+        PendingReviewPost {
+            content: self.content,
+        }
+    }
+}
+
+pub struct PendingReviewPost {
+    content: String,
+}
+
+impl PendingReviewPost {
+    pub fn approve(self) -> Post {
+        Post {
+            content: self.content,
+        }
+    }
+}
diff --git a/listings/ch17-oop/listing-17-21/src/main.rs b/listings/ch17-oop/listing-17-21/src/main.rs
new file mode 100644
index 00000000..720c55e6
--- /dev/null
+++ b/listings/ch17-oop/listing-17-21/src/main.rs
@@ -0,0 +1,13 @@
+use blog::Post;
+
+fn main() {
+    let mut post = Post::new();
+
+    post.add_text("I ate a salad for lunch today");
+
+    let post = post.request_review();
+
+    let post = post.approve();
+
+    assert_eq!("I ate a salad for lunch today", post.content());
+}
diff --git a/listings/ch17-oop/no-listing-01-trait-object-of-clone/Cargo.lock b/listings/ch17-oop/no-listing-01-trait-object-of-clone/Cargo.lock
new file mode 100644
index 00000000..7f58b0ba
--- /dev/null
+++ b/listings/ch17-oop/no-listing-01-trait-object-of-clone/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "gui"
+version = "0.1.0"
+
diff --git a/listings/ch17-oop/no-listing-01-trait-object-of-clone/Cargo.toml b/listings/ch17-oop/no-listing-01-trait-object-of-clone/Cargo.toml
new file mode 100644
index 00000000..1f61cd20
--- /dev/null
+++ b/listings/ch17-oop/no-listing-01-trait-object-of-clone/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "gui"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch17-oop/no-listing-01-trait-object-of-clone/output.txt b/listings/ch17-oop/no-listing-01-trait-object-of-clone/output.txt
new file mode 100644
index 00000000..6e4cf3c5
--- /dev/null
+++ b/listings/ch17-oop/no-listing-01-trait-object-of-clone/output.txt
@@ -0,0 +1,16 @@
+$ cargo build
+   Compiling gui v0.1.0 (file:///projects/gui)
+error[E0038]: the trait `std::clone::Clone` cannot be made into an object
+ --> src/lib.rs:2:5
+  |
+2 |     pub components: Vec<Box<dyn Clone>>,
+  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `std::clone::Clone` cannot be made into an object
+  |
+  = note: the trait cannot require that `Self : Sized`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0038`.
+error: Could not compile `gui`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch17-oop/no-listing-01-trait-object-of-clone/src/lib.rs b/listings/ch17-oop/no-listing-01-trait-object-of-clone/src/lib.rs
new file mode 100644
index 00000000..e6b1a37f
--- /dev/null
+++ b/listings/ch17-oop/no-listing-01-trait-object-of-clone/src/lib.rs
@@ -0,0 +1,3 @@
+pub struct Screen {
+    pub components: Vec<Box<dyn Clone>>,
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-01/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-01/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-01/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-01/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-01/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-01/src/main.rs
new file mode 100644
index 00000000..d28c369f
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-01/src/main.rs
@@ -0,0 +1,19 @@
+fn main() {
+    let favorite_color: Option<&str> = None;
+    let is_tuesday = false;
+    let age: Result<u8, _> = "34".parse();
+
+    if let Some(color) = favorite_color {
+        println!("Using your favorite color, {}, as the background", color);
+    } else if is_tuesday {
+        println!("Tuesday is green day!");
+    } else if let Ok(age) = age {
+        if age > 30 {
+            println!("Using purple as the background color");
+        } else {
+            println!("Using orange as the background color");
+        }
+    } else {
+        println!("Using blue as the background color");
+    }
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-02/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-02/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-02/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-02/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-02/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-02/src/main.rs
new file mode 100644
index 00000000..5f75a4f2
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-02/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    // ANCHOR: here
+    let mut stack = Vec::new();
+
+    stack.push(1);
+    stack.push(2);
+    stack.push(3);
+
+    while let Some(top) = stack.pop() {
+        println!("{}", top);
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-03/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-03/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-03/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-03/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-03/output.txt b/listings/ch18-patterns-and-matching/listing-18-03/output.txt
new file mode 100644
index 00000000..02fdecbf
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-03/output.txt
@@ -0,0 +1,7 @@
+$ cargo run
+   Compiling patterns v0.1.0 (file:///projects/patterns)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.52s
+     Running `target/debug/patterns`
+a is at index 0
+b is at index 1
+c is at index 2
diff --git a/listings/ch18-patterns-and-matching/listing-18-03/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-03/src/main.rs
new file mode 100644
index 00000000..eb922d62
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-03/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    let v = vec!['a', 'b', 'c'];
+
+    for (index, value) in v.iter().enumerate() {
+        println!("{} is at index {}", value, index);
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-04/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-04/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-04/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-04/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-04/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-04/src/main.rs
new file mode 100644
index 00000000..27b0c3fb
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-04/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    // ANCHOR: here
+    let (x, y, z) = (1, 2, 3);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-05/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-05/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-05/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-05/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-05/output.txt b/listings/ch18-patterns-and-matching/listing-18-05/output.txt
new file mode 100644
index 00000000..d0935450
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-05/output.txt
@@ -0,0 +1,17 @@
+$ cargo run
+   Compiling patterns v0.1.0 (file:///projects/patterns)
+error[E0308]: mismatched types
+ --> src/main.rs:2:9
+  |
+2 |     let (x, y) = (1, 2, 3);
+  |         ^^^^^^ expected a tuple with 3 elements, found one with 2 elements
+  |
+  = note: expected type `({integer}, {integer}, {integer})`
+             found type `(_, _)`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
+error: Could not compile `patterns`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch18-patterns-and-matching/listing-18-05/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-05/src/main.rs
new file mode 100644
index 00000000..39f768e2
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-05/src/main.rs
@@ -0,0 +1,5 @@
+fn main() {
+    // ANCHOR: here
+    let (x, y) = (1, 2, 3);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-06/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-06/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-06/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-06/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-06/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-06/src/main.rs
new file mode 100644
index 00000000..c5d71e6c
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-06/src/main.rs
@@ -0,0 +1,7 @@
+// ANCHOR: here
+fn foo(x: i32) {
+    // code goes here
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch18-patterns-and-matching/listing-18-07/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-07/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-07/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-07/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-07/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-07/src/main.rs
new file mode 100644
index 00000000..4eccb808
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-07/src/main.rs
@@ -0,0 +1,8 @@
+fn print_coordinates(&(x, y): &(i32, i32)) {
+    println!("Current location: ({}, {})", x, y);
+}
+
+fn main() {
+    let point = (3, 5);
+    print_coordinates(&point);
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-08/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-08/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-08/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-08/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-08/output.txt b/listings/ch18-patterns-and-matching/listing-18-08/output.txt
new file mode 100644
index 00000000..5fac6714
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-08/output.txt
@@ -0,0 +1,14 @@
+$ cargo run
+   Compiling patterns v0.1.0 (file:///projects/patterns)
+error[E0005]: refutable pattern in local binding: `None` not covered
+ --> src/main.rs:3:9
+  |
+3 |     let Some(x) = some_option_value;
+  |         ^^^^^^^ pattern `None` not covered
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0005`.
+error: Could not compile `patterns`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch18-patterns-and-matching/listing-18-08/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-08/src/main.rs
new file mode 100644
index 00000000..7baa02a4
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-08/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let some_option_value: Option<i32> = None;
+    // ANCHOR: here
+    let Some(x) = some_option_value;
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-09/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-09/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-09/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-09/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-09/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-09/src/main.rs
new file mode 100644
index 00000000..d6274fc0
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-09/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    let some_option_value: Option<i32> = None;
+    // ANCHOR: here
+    if let Some(x) = some_option_value {
+        println!("{}", x);
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-10/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-10/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-10/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-10/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-10/output.txt b/listings/ch18-patterns-and-matching/listing-18-10/output.txt
new file mode 100644
index 00000000..263de395
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-10/output.txt
@@ -0,0 +1,15 @@
+$ cargo run
+   Compiling patterns v0.1.0 (file:///projects/patterns)
+warning: irrefutable if-let pattern
+ --> src/main.rs:2:5
+  |
+2 | /     if let x = 5 {
+3 | |         println!("{}", x);
+4 | |     };
+  | |_____^
+  |
+  = note: #[warn(irrefutable_let_patterns)] on by default
+
+    Finished dev [unoptimized + debuginfo] target(s) in 0.39s
+     Running `target/debug/patterns`
+5
diff --git a/listings/ch18-patterns-and-matching/listing-18-10/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-10/src/main.rs
new file mode 100644
index 00000000..cb81772e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-10/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    // ANCHOR: here
+    if let x = 5 {
+        println!("{}", x);
+    };
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-11/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-11/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-11/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-11/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-11/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-11/src/main.rs
new file mode 100644
index 00000000..25eaa79f
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-11/src/main.rs
@@ -0,0 +1,14 @@
+fn main() {
+    // ANCHOR: here
+    let x = Some(5);
+    let y = 10;
+
+    match x {
+        Some(50) => println!("Got 50"),
+        Some(y) => println!("Matched, y = {:?}", y),
+        _ => println!("Default case, x = {:?}", x),
+    }
+
+    println!("at the end: x = {:?}, y = {:?}", x, y);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-12/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-12/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-12/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-12/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-12/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-12/src/main.rs
new file mode 100644
index 00000000..62f4ccbf
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-12/src/main.rs
@@ -0,0 +1,12 @@
+struct Point {
+    x: i32,
+    y: i32,
+}
+
+fn main() {
+    let p = Point { x: 0, y: 7 };
+
+    let Point { x: a, y: b } = p;
+    assert_eq!(0, a);
+    assert_eq!(7, b);
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-13/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-13/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-13/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-13/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-13/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-13/src/main.rs
new file mode 100644
index 00000000..5badc159
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-13/src/main.rs
@@ -0,0 +1,12 @@
+struct Point {
+    x: i32,
+    y: i32,
+}
+
+fn main() {
+    let p = Point { x: 0, y: 7 };
+
+    let Point { x, y } = p;
+    assert_eq!(0, x);
+    assert_eq!(7, y);
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-14/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-14/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-14/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-14/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-14/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-14/src/main.rs
new file mode 100644
index 00000000..8d445d9b
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-14/src/main.rs
@@ -0,0 +1,16 @@
+struct Point {
+    x: i32,
+    y: i32,
+}
+
+// ANCHOR: here
+fn main() {
+    let p = Point { x: 0, y: 7 };
+
+    match p {
+        Point { x, y: 0 } => println!("On the x axis at {}", x),
+        Point { x: 0, y } => println!("On the y axis at {}", y),
+        Point { x, y } => println!("On neither axis: ({}, {})", x, y),
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch18-patterns-and-matching/listing-18-15/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-15/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-15/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-15/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-15/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-15/src/main.rs
new file mode 100644
index 00000000..259aaca8
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-15/src/main.rs
@@ -0,0 +1,32 @@
+enum Message {
+    Quit,
+    Move { x: i32, y: i32 },
+    Write(String),
+    ChangeColor(i32, i32, i32),
+}
+
+fn main() {
+    let msg = Message::ChangeColor(0, 160, 255);
+
+    match msg {
+        Message::Quit => {
+            println!("The Quit variant has no data to destructure.")
+        }
+        Message::Move { x, y } => {
+            println!(
+                "Move in the x direction {} and in the y direction {}",
+                x,
+                y
+            );
+        }
+        Message::Write(text) => println!("Text message: {}", text),
+        Message::ChangeColor(r, g, b) => {
+            println!(
+                "Change the color to red {}, green {}, and blue {}",
+                r,
+                g,
+                b
+            )
+        }
+    }
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-16/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-16/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-16/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-16/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-16/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-16/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-16/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-16/src/main.rs
new file mode 100644
index 00000000..61757a36
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-16/src/main.rs
@@ -0,0 +1,35 @@
+enum Color {
+   Rgb(i32, i32, i32),
+   Hsv(i32, i32, i32),
+}
+
+enum Message {
+    Quit,
+    Move { x: i32, y: i32 },
+    Write(String),
+    ChangeColor(Color),
+}
+
+fn main() {
+    let msg = Message::ChangeColor(Color::Hsv(0, 160, 255));
+
+    match msg {
+        Message::ChangeColor(Color::Rgb(r, g, b)) => {
+            println!(
+                "Change the color to red {}, green {}, and blue {}",
+                r,
+                g,
+                b
+            )
+        }
+        Message::ChangeColor(Color::Hsv(h, s, v)) => {
+            println!(
+                "Change the color to hue {}, saturation {}, and value {}",
+                h,
+                s,
+                v
+            )
+        }
+        _ => ()
+    }
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-17/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-17/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-17/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-17/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-17/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-17/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-17/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-17/src/main.rs
new file mode 100644
index 00000000..cf1fbe07
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-17/src/main.rs
@@ -0,0 +1,7 @@
+fn foo(_: i32, y: i32) {
+    println!("This code only uses the y parameter: {}", y);
+}
+
+fn main() {
+    foo(3, 4);
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-18/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-18/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-18/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-18/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-18/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-18/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-18/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-18/src/main.rs
new file mode 100644
index 00000000..b776c64c
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-18/src/main.rs
@@ -0,0 +1,17 @@
+fn main() {
+    // ANCHOR: here
+    let mut setting_value = Some(5);
+    let new_setting_value = Some(10);
+
+    match (setting_value, new_setting_value) {
+        (Some(_), Some(_)) => {
+            println!("Can't overwrite an existing customized value");
+        }
+        _ => {
+            setting_value = new_setting_value;
+        }
+    }
+
+    println!("setting is {:?}", setting_value);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-19/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-19/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-19/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-19/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-19/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-19/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-19/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-19/src/main.rs
new file mode 100644
index 00000000..4bc1ff54
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-19/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // ANCHOR: here
+    let numbers = (2, 4, 8, 16, 32);
+
+    match numbers {
+        (first, _, third, _, fifth) => {
+            println!("Some numbers: {}, {}, {}", first, third, fifth)
+        },
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-20/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-20/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-20/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-20/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-20/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-20/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-20/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-20/src/main.rs
new file mode 100644
index 00000000..1ffc46ba
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-20/src/main.rs
@@ -0,0 +1,4 @@
+fn main() {
+    let _x = 5;
+    let y = 10;
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-21/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-21/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-21/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-21/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-21/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-21/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-21/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-21/src/main.rs
new file mode 100644
index 00000000..98061050
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-21/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // ANCHOR: here
+    let s = Some(String::from("Hello!"));
+
+    if let Some(_s) = s {
+        println!("found a string");
+    }
+
+    println!("{:?}", s);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-22/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-22/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-22/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-22/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-22/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-22/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-22/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-22/src/main.rs
new file mode 100644
index 00000000..e2faa345
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-22/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // ANCHOR: here
+    let s = Some(String::from("Hello!"));
+
+    if let Some(_) = s {
+        println!("found a string");
+    }
+
+    println!("{:?}", s);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-23/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-23/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-23/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-23/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-23/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-23/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-23/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-23/src/main.rs
new file mode 100644
index 00000000..7a9d9bb3
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-23/src/main.rs
@@ -0,0 +1,15 @@
+fn main() {
+    // ANCHOR: here
+    struct Point {
+        x: i32,
+        y: i32,
+        z: i32,
+    }
+
+    let origin = Point { x: 0, y: 0, z: 0 };
+
+    match origin {
+        Point { x, .. } => println!("x is {}", x),
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-24/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-24/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-24/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-24/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-24/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-24/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-24/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-24/src/main.rs
new file mode 100644
index 00000000..8490bdd5
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-24/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let numbers = (2, 4, 8, 16, 32);
+
+    match numbers {
+        (first, .., last) => {
+            println!("Some numbers: {}, {}", first, last);
+        },
+    }
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-25/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-25/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-25/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-25/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-25/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-25/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-25/output.txt b/listings/ch18-patterns-and-matching/listing-18-25/output.txt
new file mode 100644
index 00000000..032b3dc0
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-25/output.txt
@@ -0,0 +1,15 @@
+$ cargo run
+   Compiling patterns v0.1.0 (file:///projects/patterns)
+error: `..` can only be used once per tuple or tuple struct pattern
+ --> src/main.rs:5:22
+  |
+5 |         (.., second, ..) => {
+  |          --          ^^ can only be used once per pattern
+  |          |
+  |          previously present here
+
+error: aborting due to previous error
+
+error: Could not compile `patterns`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch18-patterns-and-matching/listing-18-25/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-25/src/main.rs
new file mode 100644
index 00000000..b90884eb
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-25/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let numbers = (2, 4, 8, 16, 32);
+
+    match numbers {
+        (.., second, ..) => {
+            println!("Some numbers: {}", second)
+        },
+    }
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-26/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-26/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-26/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-26/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-26/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-26/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-26/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-26/src/main.rs
new file mode 100644
index 00000000..4ec86cba
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-26/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // ANCHOR: here
+    let num = Some(4);
+
+    match num {
+        Some(x) if x < 5 => println!("less than five: {}", x),
+        Some(x) => println!("{}", x),
+        None => (),
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-27/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-27/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-27/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-27/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-27/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-27/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-27/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-27/src/main.rs
new file mode 100644
index 00000000..348e3672
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-27/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    let x = Some(5);
+    let y = 10;
+
+    match x {
+        Some(50) => println!("Got 50"),
+        Some(n) if n == y => println!("Matched, n = {}", n),
+        _ => println!("Default case, x = {:?}", x),
+    }
+
+    println!("at the end: x = {:?}, y = {}", x, y);
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-28/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-28/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-28/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-28/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-28/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-28/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-28/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-28/src/main.rs
new file mode 100644
index 00000000..15804553
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-28/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // ANCHOR: here
+    let x = 4;
+    let y = false;
+
+    match x {
+        4 | 5 | 6 if y => println!("yes"),
+        _ => println!("no"),
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/listing-18-29/Cargo.lock b/listings/ch18-patterns-and-matching/listing-18-29/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-29/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/listing-18-29/Cargo.toml b/listings/ch18-patterns-and-matching/listing-18-29/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-29/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/listing-18-29/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-29/src/main.rs
new file mode 100644
index 00000000..f5b87399
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/listing-18-29/src/main.rs
@@ -0,0 +1,21 @@
+fn main() {
+    // ANCHOR: here
+    enum Message {
+        Hello { id: i32 },
+    }
+
+    let msg = Message::Hello { id: 5 };
+
+    match msg {
+        Message::Hello { id: id_variable @ 3..=7 } => {
+            println!("Found an id in range: {}", id_variable)
+        },
+        Message::Hello { id: 10..=12 } => {
+            println!("Found an id in another range")
+        },
+        Message::Hello { id } => {
+            println!("Found some other id: {}", id)
+        },
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.lock b/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.toml b/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/no-listing-01-literals/src/main.rs b/listings/ch18-patterns-and-matching/no-listing-01-literals/src/main.rs
new file mode 100644
index 00000000..7978e1ad
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-01-literals/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    // ANCHOR: here
+    let x = 1;
+
+    match x {
+        1 => println!("one"),
+        2 => println!("two"),
+        3 => println!("three"),
+        _ => println!("anything"),
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.lock b/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.toml b/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/src/main.rs b/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/src/main.rs
new file mode 100644
index 00000000..e52d815d
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // ANCHOR: here
+    let x = 1;
+
+    match x {
+        1 | 2 => println!("one or two"),
+        3 => println!("three"),
+        _ => println!("anything"),
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.lock b/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.toml b/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/no-listing-03-ranges/src/main.rs b/listings/ch18-patterns-and-matching/no-listing-03-ranges/src/main.rs
new file mode 100644
index 00000000..a3ebe7af
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-03-ranges/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    // ANCHOR: here
+    let x = 5;
+
+    match x {
+        1..=5 => println!("one through five"),
+        _ => println!("something else"),
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.lock b/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.toml b/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/src/main.rs b/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/src/main.rs
new file mode 100644
index 00000000..8cebfef5
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/src/main.rs
@@ -0,0 +1,11 @@
+fn main() {
+    // ANCHOR: here
+    let x = 'c';
+
+    match x {
+        'a'..='j' => println!("early ASCII letter"),
+        'k'..='z' => println!("late ASCII letter"),
+        _ => println!("something else"),
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.lock b/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.lock
new file mode 100644
index 00000000..a233623e
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "patterns"
+version = "0.1.0"
+
diff --git a/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.toml b/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.toml
new file mode 100644
index 00000000..f77be077
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "patterns"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/src/main.rs b/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/src/main.rs
new file mode 100644
index 00000000..67f98ed4
--- /dev/null
+++ b/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/src/main.rs
@@ -0,0 +1,10 @@
+fn main() {
+    struct Point {
+        x: i32,
+        y: i32,
+    }
+
+    // ANCHOR: here
+    let ((feet, inches), Point {x, y}) = ((3, 10), Point { x: 3, y: -10 });
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/listing-13-21-reproduced/Cargo.lock b/listings/ch19-advanced-features/listing-13-21-reproduced/Cargo.lock
new file mode 100644
index 00000000..da4124d8
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-13-21-reproduced/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "counter"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-13-21-reproduced/Cargo.toml b/listings/ch19-advanced-features/listing-13-21-reproduced/Cargo.toml
new file mode 100644
index 00000000..4eb29e80
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-13-21-reproduced/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "counter"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-13-21-reproduced/src/lib.rs b/listings/ch19-advanced-features/listing-13-21-reproduced/src/lib.rs
new file mode 100644
index 00000000..0e65a017
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-13-21-reproduced/src/lib.rs
@@ -0,0 +1,28 @@
+struct Counter {
+    count: u32,
+}
+
+impl Counter {
+    fn new() -> Counter {
+        Counter { count: 0 }
+    }
+}
+
+// ANCHOR: ch19
+impl Iterator for Counter {
+    type Item = u32;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        // --snip--
+        // ANCHOR_END: ch19
+        self.count += 1;
+
+        if self.count < 6 {
+            Some(self.count)
+        } else {
+            None
+        }
+    }
+}
+
+fn main() {}
diff --git a/listings/ch19-advanced-features/listing-19-01/Cargo.lock b/listings/ch19-advanced-features/listing-19-01/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-01/Cargo.toml b/listings/ch19-advanced-features/listing-19-01/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-01/src/main.rs b/listings/ch19-advanced-features/listing-19-01/src/main.rs
new file mode 100644
index 00000000..893f5789
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-01/src/main.rs
@@ -0,0 +1,8 @@
+fn main() {
+    // ANCHOR: here
+    let mut num = 5;
+
+    let r1 = &num as *const i32;
+    let r2 = &mut num as *mut i32;
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/listing-19-02/Cargo.lock b/listings/ch19-advanced-features/listing-19-02/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-02/Cargo.toml b/listings/ch19-advanced-features/listing-19-02/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-02/src/main.rs b/listings/ch19-advanced-features/listing-19-02/src/main.rs
new file mode 100644
index 00000000..849629a7
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-02/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    // ANCHOR: here
+    let address = 0x012345usize;
+    let r = address as *const i32;
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/listing-19-03/Cargo.lock b/listings/ch19-advanced-features/listing-19-03/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-03/Cargo.toml b/listings/ch19-advanced-features/listing-19-03/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-03/src/main.rs b/listings/ch19-advanced-features/listing-19-03/src/main.rs
new file mode 100644
index 00000000..02a0be6b
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-03/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    // ANCHOR: here
+    let mut num = 5;
+
+    let r1 = &num as *const i32;
+    let r2 = &mut num as *mut i32;
+
+    unsafe {
+        println!("r1 is: {}", *r1);
+        println!("r2 is: {}", *r2);
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/listing-19-04/Cargo.lock b/listings/ch19-advanced-features/listing-19-04/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-04/Cargo.toml b/listings/ch19-advanced-features/listing-19-04/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-04/src/main.rs b/listings/ch19-advanced-features/listing-19-04/src/main.rs
new file mode 100644
index 00000000..6ac58442
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-04/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    // ANCHOR: here
+    let mut v = vec![1, 2, 3, 4, 5, 6];
+
+    let r = &mut v[..];
+
+    let (a, b) = r.split_at_mut(3);
+
+    assert_eq!(a, &mut [1, 2, 3]);
+    assert_eq!(b, &mut [4, 5, 6]);
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/listing-19-05/Cargo.lock b/listings/ch19-advanced-features/listing-19-05/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-05/Cargo.toml b/listings/ch19-advanced-features/listing-19-05/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-05/output.txt b/listings/ch19-advanced-features/listing-19-05/output.txt
new file mode 100644
index 00000000..9486066e
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-05/output.txt
@@ -0,0 +1,23 @@
+$ cargo run
+   Compiling unsafe-example v0.1.0 (file:///projects/unsafe-example)
+error[E0499]: cannot borrow `*slice` as mutable more than once at a time
+ --> src/main.rs:7:11
+  |
+1 |   fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
+  |                          - let's call the lifetime of this reference `'1`
+...
+6 |       (&mut slice[..mid],
+  |       -     ----- first mutable borrow occurs here
+  |  _____|
+  | |
+7 | |      &mut slice[mid..])
+  | |___________^^^^^_______- returning this value requires that `*slice` is borrowed for `'1`
+  |             |
+  |             second mutable borrow occurs here
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0499`.
+error: Could not compile `unsafe-example`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch19-advanced-features/listing-19-05/src/main.rs b/listings/ch19-advanced-features/listing-19-05/src/main.rs
new file mode 100644
index 00000000..549fcfab
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-05/src/main.rs
@@ -0,0 +1,15 @@
+// ANCHOR: here
+fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
+    let len = slice.len();
+
+    assert!(mid <= len);
+
+    (&mut slice[..mid],
+     &mut slice[mid..])
+}
+// ANCHOR_END: here
+
+fn main() {
+    let mut vector = vec![1, 2, 3, 4, 5, 6];
+    let (left, right) = split_at_mut(&mut vector, 3);
+}
diff --git a/listings/ch19-advanced-features/listing-19-06/Cargo.lock b/listings/ch19-advanced-features/listing-19-06/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-06/Cargo.toml b/listings/ch19-advanced-features/listing-19-06/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-06/src/main.rs b/listings/ch19-advanced-features/listing-19-06/src/main.rs
new file mode 100644
index 00000000..f53f0000
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-06/src/main.rs
@@ -0,0 +1,20 @@
+// ANCHOR: here
+use std::slice;
+
+fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
+    let len = slice.len();
+    let ptr = slice.as_mut_ptr();
+
+    assert!(mid <= len);
+
+    unsafe {
+        (slice::from_raw_parts_mut(ptr, mid),
+         slice::from_raw_parts_mut(ptr.offset(mid as isize), len - mid))
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let mut vector = vec![1, 2, 3, 4, 5, 6];
+    let (left, right) = split_at_mut(&mut vector, 3);
+}
diff --git a/listings/ch19-advanced-features/listing-19-07/Cargo.lock b/listings/ch19-advanced-features/listing-19-07/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-07/Cargo.toml b/listings/ch19-advanced-features/listing-19-07/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-07/src/main.rs b/listings/ch19-advanced-features/listing-19-07/src/main.rs
new file mode 100644
index 00000000..c5586a28
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-07/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    // ANCHOR: here
+    use std::slice;
+
+    let address = 0x01234usize;
+    let r = address as *mut i32;
+
+    let slice: &[i32] = unsafe {
+        slice::from_raw_parts_mut(r, 10000)
+    };
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/listing-19-08/Cargo.lock b/listings/ch19-advanced-features/listing-19-08/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-08/Cargo.toml b/listings/ch19-advanced-features/listing-19-08/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-08/src/main.rs b/listings/ch19-advanced-features/listing-19-08/src/main.rs
new file mode 100644
index 00000000..8b56630c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-08/src/main.rs
@@ -0,0 +1,9 @@
+extern "C" {
+    fn abs(input: i32) -> i32;
+}
+
+fn main() {
+    unsafe {
+        println!("Absolute value of -3 according to C: {}", abs(-3));
+    }
+}
diff --git a/listings/ch19-advanced-features/listing-19-09/Cargo.lock b/listings/ch19-advanced-features/listing-19-09/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-09/Cargo.toml b/listings/ch19-advanced-features/listing-19-09/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-09/src/main.rs b/listings/ch19-advanced-features/listing-19-09/src/main.rs
new file mode 100644
index 00000000..82a4b421
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-09/src/main.rs
@@ -0,0 +1,5 @@
+static HELLO_WORLD: &str = "Hello, world!";
+
+fn main() {
+    println!("name is: {}", HELLO_WORLD);
+}
diff --git a/listings/ch19-advanced-features/listing-19-10/Cargo.lock b/listings/ch19-advanced-features/listing-19-10/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-10/Cargo.toml b/listings/ch19-advanced-features/listing-19-10/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-10/src/main.rs b/listings/ch19-advanced-features/listing-19-10/src/main.rs
new file mode 100644
index 00000000..e8dab68e
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-10/src/main.rs
@@ -0,0 +1,15 @@
+static mut COUNTER: u32 = 0;
+
+fn add_to_count(inc: u32) {
+    unsafe {
+        COUNTER += inc;
+    }
+}
+
+fn main() {
+    add_to_count(3);
+
+    unsafe {
+        println!("COUNTER: {}", COUNTER);
+    }
+}
diff --git a/listings/ch19-advanced-features/listing-19-11/Cargo.lock b/listings/ch19-advanced-features/listing-19-11/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-11/Cargo.toml b/listings/ch19-advanced-features/listing-19-11/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-11/src/main.rs b/listings/ch19-advanced-features/listing-19-11/src/main.rs
new file mode 100644
index 00000000..885c1aa1
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-11/src/main.rs
@@ -0,0 +1,9 @@
+unsafe trait Foo {
+    // methods go here
+}
+
+unsafe impl Foo for i32 {
+    // method implementations go here
+}
+
+fn main() {}
diff --git a/listings/ch19-advanced-features/listing-19-12/Cargo.lock b/listings/ch19-advanced-features/listing-19-12/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-12/Cargo.toml b/listings/ch19-advanced-features/listing-19-12/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-12/src/lib.rs b/listings/ch19-advanced-features/listing-19-12/src/lib.rs
new file mode 100644
index 00000000..dbe04620
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-12/src/lib.rs
@@ -0,0 +1,5 @@
+pub trait Iterator {
+    type Item;
+
+    fn next(&mut self) -> Option<Self::Item>;
+}
diff --git a/listings/ch19-advanced-features/listing-19-13/Cargo.lock b/listings/ch19-advanced-features/listing-19-13/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-13/Cargo.toml b/listings/ch19-advanced-features/listing-19-13/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-13/src/lib.rs b/listings/ch19-advanced-features/listing-19-13/src/lib.rs
new file mode 100644
index 00000000..7c9479c5
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-13/src/lib.rs
@@ -0,0 +1,3 @@
+pub trait Iterator<T> {
+    fn next(&mut self) -> Option<T>;
+}
diff --git a/listings/ch19-advanced-features/listing-19-14/Cargo.lock b/listings/ch19-advanced-features/listing-19-14/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-14/Cargo.toml b/listings/ch19-advanced-features/listing-19-14/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-14/src/main.rs b/listings/ch19-advanced-features/listing-19-14/src/main.rs
new file mode 100644
index 00000000..89f35727
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-14/src/main.rs
@@ -0,0 +1,23 @@
+use std::ops::Add;
+
+#[derive(Debug, PartialEq)]
+struct Point {
+    x: i32,
+    y: i32,
+}
+
+impl Add for Point {
+    type Output = Point;
+
+    fn add(self, other: Point) -> Point {
+        Point {
+            x: self.x + other.x,
+            y: self.y + other.y,
+        }
+    }
+}
+
+fn main() {
+    assert_eq!(Point { x: 1, y: 0 } + Point { x: 2, y: 3 },
+               Point { x: 3, y: 3 });
+}
diff --git a/listings/ch19-advanced-features/listing-19-15/Cargo.lock b/listings/ch19-advanced-features/listing-19-15/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-15/Cargo.toml b/listings/ch19-advanced-features/listing-19-15/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-15/src/lib.rs b/listings/ch19-advanced-features/listing-19-15/src/lib.rs
new file mode 100644
index 00000000..f38bf475
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-15/src/lib.rs
@@ -0,0 +1,12 @@
+use std::ops::Add;
+
+struct Millimeters(u32);
+struct Meters(u32);
+
+impl Add<Meters> for Millimeters {
+    type Output = Millimeters;
+
+    fn add(self, other: Meters) -> Millimeters {
+        Millimeters(self.0 + (other.0 * 1000))
+    }
+}
diff --git a/listings/ch19-advanced-features/listing-19-16/Cargo.lock b/listings/ch19-advanced-features/listing-19-16/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-16/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-16/Cargo.toml b/listings/ch19-advanced-features/listing-19-16/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-16/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-16/src/main.rs b/listings/ch19-advanced-features/listing-19-16/src/main.rs
new file mode 100644
index 00000000..d854e287
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-16/src/main.rs
@@ -0,0 +1,31 @@
+// ANCHOR: here
+trait Pilot {
+    fn fly(&self);
+}
+
+trait Wizard {
+    fn fly(&self);
+}
+
+struct Human;
+
+impl Pilot for Human {
+    fn fly(&self) {
+        println!("This is your captain speaking.");
+    }
+}
+
+impl Wizard for Human {
+    fn fly(&self) {
+        println!("Up!");
+    }
+}
+
+impl Human {
+    fn fly(&self) {
+        println!("*waving arms furiously*");
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch19-advanced-features/listing-19-17/Cargo.lock b/listings/ch19-advanced-features/listing-19-17/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-17/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-17/Cargo.toml b/listings/ch19-advanced-features/listing-19-17/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-17/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-17/src/main.rs b/listings/ch19-advanced-features/listing-19-17/src/main.rs
new file mode 100644
index 00000000..3df65a7c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-17/src/main.rs
@@ -0,0 +1,34 @@
+trait Pilot {
+    fn fly(&self);
+}
+
+trait Wizard {
+    fn fly(&self);
+}
+
+struct Human;
+
+impl Pilot for Human {
+    fn fly(&self) {
+        println!("This is your captain speaking.");
+    }
+}
+
+impl Wizard for Human {
+    fn fly(&self) {
+        println!("Up!");
+    }
+}
+
+impl Human {
+    fn fly(&self) {
+        println!("*waving arms furiously*");
+    }
+}
+
+// ANCHOR: here
+fn main() {
+    let person = Human;
+    person.fly();
+}
+// ANCHOR_END: here
diff --git a/listings/ch19-advanced-features/listing-19-18/Cargo.lock b/listings/ch19-advanced-features/listing-19-18/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-18/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-18/Cargo.toml b/listings/ch19-advanced-features/listing-19-18/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-18/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-18/output.txt b/listings/ch19-advanced-features/listing-19-18/output.txt
new file mode 100644
index 00000000..2e9da17d
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-18/output.txt
@@ -0,0 +1,7 @@
+$ cargo run
+   Compiling traits-example v0.1.0 (file:///projects/traits-example)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.46s
+     Running `target/debug/traits-example`
+This is your captain speaking.
+Up!
+*waving arms furiously*
diff --git a/listings/ch19-advanced-features/listing-19-18/src/main.rs b/listings/ch19-advanced-features/listing-19-18/src/main.rs
new file mode 100644
index 00000000..fa01c09c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-18/src/main.rs
@@ -0,0 +1,36 @@
+trait Pilot {
+    fn fly(&self);
+}
+
+trait Wizard {
+    fn fly(&self);
+}
+
+struct Human;
+
+impl Pilot for Human {
+    fn fly(&self) {
+        println!("This is your captain speaking.");
+    }
+}
+
+impl Wizard for Human {
+    fn fly(&self) {
+        println!("Up!");
+    }
+}
+
+impl Human {
+    fn fly(&self) {
+        println!("*waving arms furiously*");
+    }
+}
+
+// ANCHOR: here
+fn main() {
+    let person = Human;
+    Pilot::fly(&person);
+    Wizard::fly(&person);
+    person.fly();
+}
+// ANCHOR_END: here
diff --git a/listings/ch19-advanced-features/listing-19-19/Cargo.lock b/listings/ch19-advanced-features/listing-19-19/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-19/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-19/Cargo.toml b/listings/ch19-advanced-features/listing-19-19/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-19/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-19/output.txt b/listings/ch19-advanced-features/listing-19-19/output.txt
new file mode 100644
index 00000000..087e802b
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-19/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling traits-example v0.1.0 (file:///projects/traits-example)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.54s
+     Running `target/debug/traits-example`
+A baby dog is called a Spot
diff --git a/listings/ch19-advanced-features/listing-19-19/src/main.rs b/listings/ch19-advanced-features/listing-19-19/src/main.rs
new file mode 100644
index 00000000..44affe0e
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-19/src/main.rs
@@ -0,0 +1,21 @@
+trait Animal {
+    fn baby_name() -> String;
+}
+
+struct Dog;
+
+impl Dog {
+    fn baby_name() -> String {
+        String::from("Spot")
+    }
+}
+
+impl Animal for Dog {
+    fn baby_name() -> String {
+        String::from("puppy")
+    }
+}
+
+fn main() {
+    println!("A baby dog is called a {}", Dog::baby_name());
+}
diff --git a/listings/ch19-advanced-features/listing-19-20/Cargo.lock b/listings/ch19-advanced-features/listing-19-20/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-20/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-20/Cargo.toml b/listings/ch19-advanced-features/listing-19-20/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-20/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-20/output.txt b/listings/ch19-advanced-features/listing-19-20/output.txt
new file mode 100644
index 00000000..cc5b9770
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-20/output.txt
@@ -0,0 +1,20 @@
+$ cargo run
+   Compiling traits-example v0.1.0 (file:///projects/traits-example)
+error[E0283]: type annotations required: cannot resolve `_: Animal`
+  --> src/main.rs:20:43
+   |
+20 |     println!("A baby dog is called a {}", Animal::baby_name());
+   |                                           ^^^^^^^^^^^^^^^^^
+   |
+note: required by `Animal::baby_name`
+  --> src/main.rs:2:5
+   |
+2  |     fn baby_name() -> String;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0283`.
+error: Could not compile `traits-example`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch19-advanced-features/listing-19-20/src/main.rs b/listings/ch19-advanced-features/listing-19-20/src/main.rs
new file mode 100644
index 00000000..8e295c9b
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-20/src/main.rs
@@ -0,0 +1,23 @@
+trait Animal {
+    fn baby_name() -> String;
+}
+
+struct Dog;
+
+impl Dog {
+    fn baby_name() -> String {
+        String::from("Spot")
+    }
+}
+
+impl Animal for Dog {
+    fn baby_name() -> String {
+        String::from("puppy")
+    }
+}
+
+// ANCHOR: here
+fn main() {
+    println!("A baby dog is called a {}", Animal::baby_name());
+}
+// ANCHOR_END: here
diff --git a/listings/ch19-advanced-features/listing-19-21/Cargo.lock b/listings/ch19-advanced-features/listing-19-21/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-21/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-21/Cargo.toml b/listings/ch19-advanced-features/listing-19-21/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-21/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-21/output.txt b/listings/ch19-advanced-features/listing-19-21/output.txt
new file mode 100644
index 00000000..4d1ee5ab
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-21/output.txt
@@ -0,0 +1,5 @@
+$ cargo run
+   Compiling traits-example v0.1.0 (file:///projects/traits-example)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.48s
+     Running `target/debug/traits-example`
+A baby dog is called a puppy
diff --git a/listings/ch19-advanced-features/listing-19-21/src/main.rs b/listings/ch19-advanced-features/listing-19-21/src/main.rs
new file mode 100644
index 00000000..b1df7289
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-21/src/main.rs
@@ -0,0 +1,23 @@
+trait Animal {
+    fn baby_name() -> String;
+}
+
+struct Dog;
+
+impl Dog {
+    fn baby_name() -> String {
+        String::from("Spot")
+    }
+}
+
+impl Animal for Dog {
+    fn baby_name() -> String {
+        String::from("puppy")
+    }
+}
+
+// ANCHOR: here
+fn main() {
+    println!("A baby dog is called a {}", <Dog as Animal>::baby_name());
+}
+// ANCHOR_END: here
diff --git a/listings/ch19-advanced-features/listing-19-22/Cargo.lock b/listings/ch19-advanced-features/listing-19-22/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-22/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-22/Cargo.toml b/listings/ch19-advanced-features/listing-19-22/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-22/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-22/src/main.rs b/listings/ch19-advanced-features/listing-19-22/src/main.rs
new file mode 100644
index 00000000..febe58b0
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-22/src/main.rs
@@ -0,0 +1,17 @@
+// ANCHOR: here
+use std::fmt;
+
+trait OutlinePrint: fmt::Display {
+    fn outline_print(&self) {
+        let output = self.to_string();
+        let len = output.len();
+        println!("{}", "*".repeat(len + 4));
+        println!("*{}*", " ".repeat(len + 2));
+        println!("* {} *", output);
+        println!("*{}*", " ".repeat(len + 2));
+        println!("{}", "*".repeat(len + 4));
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch19-advanced-features/listing-19-23/Cargo.lock b/listings/ch19-advanced-features/listing-19-23/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-23/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-23/Cargo.toml b/listings/ch19-advanced-features/listing-19-23/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-23/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-23/src/main.rs b/listings/ch19-advanced-features/listing-19-23/src/main.rs
new file mode 100644
index 00000000..eae46c92
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-23/src/main.rs
@@ -0,0 +1,14 @@
+use std::fmt;
+
+struct Wrapper(Vec<String>);
+
+impl fmt::Display for Wrapper {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "[{}]", self.0.join(", "))
+    }
+}
+
+fn main() {
+    let w = Wrapper(vec![String::from("hello"), String::from("world")]);
+    println!("w = {}", w);
+}
diff --git a/listings/ch19-advanced-features/listing-19-24/Cargo.lock b/listings/ch19-advanced-features/listing-19-24/Cargo.lock
new file mode 100644
index 00000000..7380c3c9
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-24/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "types-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-24/Cargo.toml b/listings/ch19-advanced-features/listing-19-24/Cargo.toml
new file mode 100644
index 00000000..9b4ee689
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-24/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "types-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-24/src/main.rs b/listings/ch19-advanced-features/listing-19-24/src/main.rs
new file mode 100644
index 00000000..20f26fce
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-24/src/main.rs
@@ -0,0 +1,16 @@
+fn main() {
+    // ANCHOR: here
+    let f: Box<dyn Fn() + Send + 'static> = Box::new(|| println!("hi"));
+
+    fn takes_long_type(f: Box<dyn Fn() + Send + 'static>) {
+    // --snip--
+    }
+
+    fn returns_long_type() -> Box<dyn Fn() + Send + 'static> {
+    // --snip--
+        // ANCHOR_END: here
+        Box::new(|| ())
+        // ANCHOR: here
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/listing-19-25/Cargo.lock b/listings/ch19-advanced-features/listing-19-25/Cargo.lock
new file mode 100644
index 00000000..7380c3c9
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-25/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "types-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-25/Cargo.toml b/listings/ch19-advanced-features/listing-19-25/Cargo.toml
new file mode 100644
index 00000000..9b4ee689
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-25/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "types-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-25/src/main.rs b/listings/ch19-advanced-features/listing-19-25/src/main.rs
new file mode 100644
index 00000000..af35bed2
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-25/src/main.rs
@@ -0,0 +1,18 @@
+fn main() {
+    // ANCHOR: here
+    type Thunk = Box<dyn Fn() + Send + 'static>;
+
+    let f: Thunk = Box::new(|| println!("hi"));
+
+    fn takes_long_type(f: Thunk) {
+        // --snip--
+    }
+
+    fn returns_long_type() -> Thunk {
+        // --snip--
+        // ANCHOR_END: here
+        Box::new(|| ())
+        // ANCHOR: here
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/listing-19-27/Cargo.lock b/listings/ch19-advanced-features/listing-19-27/Cargo.lock
new file mode 100644
index 00000000..5f4173e1
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-27/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-27/Cargo.toml b/listings/ch19-advanced-features/listing-19-27/Cargo.toml
new file mode 100644
index 00000000..2bed56c3
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-27/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-27/src/main.rs b/listings/ch19-advanced-features/listing-19-27/src/main.rs
new file mode 100644
index 00000000..91b2cf04
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-27/src/main.rs
@@ -0,0 +1,13 @@
+fn add_one(x: i32) -> i32 {
+    x + 1
+}
+
+fn do_twice(f: fn(i32) -> i32, arg: i32) -> i32 {
+    f(arg) + f(arg)
+}
+
+fn main() {
+    let answer = do_twice(add_one, 5);
+
+    println!("The answer is: {}", answer);
+}
diff --git a/listings/ch19-advanced-features/listing-19-28/Cargo.lock b/listings/ch19-advanced-features/listing-19-28/Cargo.lock
new file mode 100644
index 00000000..7b92445e
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-28/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "macros-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-28/Cargo.toml b/listings/ch19-advanced-features/listing-19-28/Cargo.toml
new file mode 100644
index 00000000..1829b0fa
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-28/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "macros-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-28/src/lib.rs b/listings/ch19-advanced-features/listing-19-28/src/lib.rs
new file mode 100644
index 00000000..7c7c4756
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-28/src/lib.rs
@@ -0,0 +1,12 @@
+#[macro_export]
+macro_rules! vec {
+    ( $( $x:expr ),* ) => {
+        {
+            let mut temp_vec = Vec::new();
+            $(
+                temp_vec.push($x);
+            )*
+            temp_vec
+        }
+    };
+}
diff --git a/listings/ch19-advanced-features/listing-19-30/Cargo.lock b/listings/ch19-advanced-features/listing-19-30/Cargo.lock
new file mode 100644
index 00000000..be8c994f
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-30/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello_macro"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-30/Cargo.toml b/listings/ch19-advanced-features/listing-19-30/Cargo.toml
new file mode 100644
index 00000000..5a93a685
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-30/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello_macro"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-30/src/main.rs b/listings/ch19-advanced-features/listing-19-30/src/main.rs
new file mode 100644
index 00000000..468c30aa
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-30/src/main.rs
@@ -0,0 +1,9 @@
+use hello_macro::HelloMacro;
+use hello_macro_derive::HelloMacro;
+
+#[derive(HelloMacro)]
+struct Pancakes;
+
+fn main() {
+    Pancakes::hello_macro();
+}
diff --git a/listings/ch19-advanced-features/listing-19-31/hello_macro/Cargo.lock b/listings/ch19-advanced-features/listing-19-31/hello_macro/Cargo.lock
new file mode 100644
index 00000000..be8c994f
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-31/hello_macro/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello_macro"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-31/hello_macro/Cargo.toml b/listings/ch19-advanced-features/listing-19-31/hello_macro/Cargo.toml
new file mode 100644
index 00000000..5a93a685
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-31/hello_macro/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello_macro"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.lock b/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.lock
new file mode 100644
index 00000000..56396d13
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.lock
@@ -0,0 +1,44 @@
+[[package]]
+name = "hello_macro_derive"
+version = "0.1.0"
+dependencies = [
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "0.4.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "quote"
+version = "0.6.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "syn"
+version = "0.14.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "unicode-xid"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[metadata]
+"checksum proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)" = "64c827cea7a7ab30ce4593e5e04d7a11617ad6ece2fa230605a78b00ff965316"
+"checksum quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "faf4799c5d274f3868a4aae320a0a182cbd2baee377b378f080e16a23e9d80db"
+"checksum syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)" = "261ae9ecaa397c42b960649561949d69311f08eeaea86a65696e6e46517cf741"
+"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
diff --git a/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml b/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml
new file mode 100644
index 00000000..a6df8313
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "hello_macro_derive"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[lib]
+proc-macro = true
+
+[dependencies]
+syn = "0.14.4"
+quote = "0.6.3"
diff --git a/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/src/lib.rs b/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/src/lib.rs
new file mode 100644
index 00000000..a295f37c
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/src/lib.rs
@@ -0,0 +1,15 @@
+extern crate proc_macro;
+
+use crate::proc_macro::TokenStream;
+use quote::quote;
+use syn;
+
+#[proc_macro_derive(HelloMacro)]
+pub fn hello_macro_derive(input: TokenStream) -> TokenStream {
+    // Construct a representation of Rust code as a syntax tree
+    // that we can manipulate
+    let ast = syn::parse(input).unwrap();
+
+    // Build the trait implementation
+    impl_hello_macro(&ast)
+}
diff --git a/listings/ch19-advanced-features/listing-19-31/hello_macro/src/lib.rs b/listings/ch19-advanced-features/listing-19-31/hello_macro/src/lib.rs
new file mode 100644
index 00000000..e7479318
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-31/hello_macro/src/lib.rs
@@ -0,0 +1,3 @@
+pub trait HelloMacro {
+    fn hello_macro();
+}
diff --git a/listings/ch19-advanced-features/listing-19-31/hello_macro/src/main.rs b/listings/ch19-advanced-features/listing-19-31/hello_macro/src/main.rs
new file mode 100644
index 00000000..10b028b2
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-31/hello_macro/src/main.rs
@@ -0,0 +1,13 @@
+use hello_macro::HelloMacro;
+
+struct Pancakes;
+
+impl HelloMacro for Pancakes {
+    fn hello_macro() {
+        println!("Hello, Macro! My name is Pancakes!");
+    }
+}
+
+fn main() {
+    Pancakes::hello_macro();
+}
diff --git a/listings/ch19-advanced-features/listing-19-33/hello_macro/Cargo.lock b/listings/ch19-advanced-features/listing-19-33/hello_macro/Cargo.lock
new file mode 100644
index 00000000..be8c994f
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-33/hello_macro/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello_macro"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/listing-19-33/hello_macro/Cargo.toml b/listings/ch19-advanced-features/listing-19-33/hello_macro/Cargo.toml
new file mode 100644
index 00000000..5a93a685
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-33/hello_macro/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello_macro"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/Cargo.lock b/listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/Cargo.lock
new file mode 100644
index 00000000..56396d13
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/Cargo.lock
@@ -0,0 +1,44 @@
+[[package]]
+name = "hello_macro_derive"
+version = "0.1.0"
+dependencies = [
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "0.4.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "quote"
+version = "0.6.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "syn"
+version = "0.14.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "unicode-xid"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[metadata]
+"checksum proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)" = "64c827cea7a7ab30ce4593e5e04d7a11617ad6ece2fa230605a78b00ff965316"
+"checksum quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "faf4799c5d274f3868a4aae320a0a182cbd2baee377b378f080e16a23e9d80db"
+"checksum syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)" = "261ae9ecaa397c42b960649561949d69311f08eeaea86a65696e6e46517cf741"
+"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
diff --git a/listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/Cargo.toml b/listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/Cargo.toml
new file mode 100644
index 00000000..a6df8313
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "hello_macro_derive"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[lib]
+proc-macro = true
+
+[dependencies]
+syn = "0.14.4"
+quote = "0.6.3"
diff --git a/listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/src/lib.rs b/listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/src/lib.rs
new file mode 100644
index 00000000..9d3f10bd
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/src/lib.rs
@@ -0,0 +1,29 @@
+extern crate proc_macro;
+
+use crate::proc_macro::TokenStream;
+use quote::quote;
+use syn;
+
+#[proc_macro_derive(HelloMacro)]
+pub fn hello_macro_derive(input: TokenStream) -> TokenStream {
+    // Construct a representation of Rust code as a syntax tree
+    // that we can manipulate
+    let ast = syn::parse(input).unwrap();
+
+    // Build the trait implementation
+    impl_hello_macro(&ast)
+}
+
+// ANCHOR: here
+fn impl_hello_macro(ast: &syn::DeriveInput) -> TokenStream {
+    let name = &ast.ident;
+    let gen = quote! {
+        impl HelloMacro for #name {
+            fn hello_macro() {
+                println!("Hello, Macro! My name is {}", stringify!(#name));
+            }
+        }
+    };
+    gen.into()
+}
+// ANCHOR_END: here
diff --git a/listings/ch19-advanced-features/listing-19-33/hello_macro/src/lib.rs b/listings/ch19-advanced-features/listing-19-33/hello_macro/src/lib.rs
new file mode 100644
index 00000000..e7479318
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-33/hello_macro/src/lib.rs
@@ -0,0 +1,3 @@
+pub trait HelloMacro {
+    fn hello_macro();
+}
diff --git a/listings/ch19-advanced-features/listing-19-33/hello_macro/src/main.rs b/listings/ch19-advanced-features/listing-19-33/hello_macro/src/main.rs
new file mode 100644
index 00000000..10b028b2
--- /dev/null
+++ b/listings/ch19-advanced-features/listing-19-33/hello_macro/src/main.rs
@@ -0,0 +1,13 @@
+use hello_macro::HelloMacro;
+
+struct Pancakes;
+
+impl HelloMacro for Pancakes {
+    fn hello_macro() {
+        println!("Hello, Macro! My name is Pancakes!");
+    }
+}
+
+fn main() {
+    Pancakes::hello_macro();
+}
diff --git a/listings/ch19-advanced-features/no-listing-01-unsafe-fn/Cargo.lock b/listings/ch19-advanced-features/no-listing-01-unsafe-fn/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-01-unsafe-fn/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-01-unsafe-fn/Cargo.toml b/listings/ch19-advanced-features/no-listing-01-unsafe-fn/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-01-unsafe-fn/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-01-unsafe-fn/src/main.rs b/listings/ch19-advanced-features/no-listing-01-unsafe-fn/src/main.rs
new file mode 100644
index 00000000..21ecdbe5
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-01-unsafe-fn/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    unsafe fn dangerous() {}
+
+    unsafe {
+        dangerous();
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/Cargo.lock b/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/Cargo.toml b/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/output.txt b/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/output.txt
new file mode 100644
index 00000000..429bf9d5
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/output.txt
@@ -0,0 +1,17 @@
+$ cargo run
+   Compiling traits-example v0.1.0 (file:///projects/traits-example)
+error[E0277]: `Point` doesn't implement `std::fmt::Display`
+  --> src/main.rs:20:6
+   |
+20 | impl OutlinePrint for Point {}
+   |      ^^^^^^^^^^^^ `Point` cannot be formatted with the default formatter
+   |
+   = help: the trait `std::fmt::Display` is not implemented for `Point`
+   = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
+error: Could not compile `traits-example`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/src/main.rs b/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/src/main.rs
new file mode 100644
index 00000000..a1e2fe4c
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/src/main.rs
@@ -0,0 +1,27 @@
+use std::fmt;
+
+trait OutlinePrint: fmt::Display {
+    fn outline_print(&self) {
+        let output = self.to_string();
+        let len = output.len();
+        println!("{}", "*".repeat(len + 4));
+        println!("*{}*", " ".repeat(len + 2));
+        println!("* {} *", output);
+        println!("*{}*", " ".repeat(len + 2));
+        println!("{}", "*".repeat(len + 4));
+    }
+}
+
+// ANCHOR: here
+struct Point {
+    x: i32,
+    y: i32,
+}
+
+impl OutlinePrint for Point {}
+// ANCHOR_END: here
+
+fn main() {
+    let p = Point { x: 1, y: 3 };
+    p.outline_print();
+}
diff --git a/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/Cargo.lock b/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/Cargo.toml b/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/src/main.rs b/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/src/main.rs
new file mode 100644
index 00000000..c7bbb6a7
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/src/main.rs
@@ -0,0 +1,33 @@
+trait OutlinePrint: fmt::Display {
+    fn outline_print(&self) {
+        let output = self.to_string();
+        let len = output.len();
+        println!("{}", "*".repeat(len + 4));
+        println!("*{}*", " ".repeat(len + 2));
+        println!("* {} *", output);
+        println!("*{}*", " ".repeat(len + 2));
+        println!("{}", "*".repeat(len + 4));
+    }
+}
+
+struct Point {
+    x: i32,
+    y: i32,
+}
+
+impl OutlinePrint for Point {}
+
+// ANCHOR: here
+use std::fmt;
+
+impl fmt::Display for Point {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "({}, {})", self.x, self.y)
+    }
+}
+// ANCHOR_END: here
+
+fn main() {
+    let p = Point { x: 1, y: 3 };
+    p.outline_print();
+}
diff --git a/listings/ch19-advanced-features/no-listing-04-kilometers-alias/Cargo.lock b/listings/ch19-advanced-features/no-listing-04-kilometers-alias/Cargo.lock
new file mode 100644
index 00000000..7380c3c9
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-04-kilometers-alias/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "types-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-04-kilometers-alias/Cargo.toml b/listings/ch19-advanced-features/no-listing-04-kilometers-alias/Cargo.toml
new file mode 100644
index 00000000..9b4ee689
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-04-kilometers-alias/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "types-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-04-kilometers-alias/src/main.rs b/listings/ch19-advanced-features/no-listing-04-kilometers-alias/src/main.rs
new file mode 100644
index 00000000..d3fe32e2
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-04-kilometers-alias/src/main.rs
@@ -0,0 +1,12 @@
+fn main() {
+    // ANCHOR: there
+    // ANCHOR: here
+    type Kilometers = i32;
+    // ANCHOR_END: here
+
+    let x: i32 = 5;
+    let y: Kilometers = 5;
+
+    println!("x + y = {}", x + y);
+    // ANCHOR_END: there
+}
diff --git a/listings/ch19-advanced-features/no-listing-05-write-trait/Cargo.lock b/listings/ch19-advanced-features/no-listing-05-write-trait/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-05-write-trait/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-05-write-trait/Cargo.toml b/listings/ch19-advanced-features/no-listing-05-write-trait/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-05-write-trait/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-05-write-trait/src/lib.rs b/listings/ch19-advanced-features/no-listing-05-write-trait/src/lib.rs
new file mode 100644
index 00000000..00de3f0b
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-05-write-trait/src/lib.rs
@@ -0,0 +1,10 @@
+use std::io::Error;
+use std::fmt;
+
+pub trait Write {
+    fn write(&mut self, buf: &[u8]) -> Result<usize, Error>;
+    fn flush(&mut self) -> Result<(), Error>;
+
+    fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>;
+    fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<(), Error>;
+}
diff --git a/listings/ch19-advanced-features/no-listing-06-result-alias/Cargo.lock b/listings/ch19-advanced-features/no-listing-06-result-alias/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-06-result-alias/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-06-result-alias/Cargo.toml b/listings/ch19-advanced-features/no-listing-06-result-alias/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-06-result-alias/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-06-result-alias/src/lib.rs b/listings/ch19-advanced-features/no-listing-06-result-alias/src/lib.rs
new file mode 100644
index 00000000..c53a927e
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-06-result-alias/src/lib.rs
@@ -0,0 +1,17 @@
+use std::fmt;
+
+// ANCHOR: here
+type Result<T> = std::result::Result<T, std::io::Error>;
+// ANCHOR_END: here
+
+// ANCHOR: there
+pub trait Write {
+    fn write(&mut self, buf: &[u8]) -> Result<usize>;
+    fn flush(&mut self) -> Result<()>;
+
+    fn write_all(&mut self, buf: &[u8]) -> Result<()>;
+    fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()>;
+}
+// ANCHOR_END: there
+
+fn main() {}
diff --git a/listings/ch19-advanced-features/no-listing-07-never-type/Cargo.lock b/listings/ch19-advanced-features/no-listing-07-never-type/Cargo.lock
new file mode 100644
index 00000000..71ae580c
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-07-never-type/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "traits-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-07-never-type/Cargo.toml b/listings/ch19-advanced-features/no-listing-07-never-type/Cargo.toml
new file mode 100644
index 00000000..1e3df024
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-07-never-type/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "traits-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-07-never-type/src/lib.rs b/listings/ch19-advanced-features/no-listing-07-never-type/src/lib.rs
new file mode 100644
index 00000000..23622418
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-07-never-type/src/lib.rs
@@ -0,0 +1,10 @@
+// ANCHOR: here
+fn bar() -> ! {
+    // --snip--
+    // ANCHOR_END: here
+    panic!();
+    // ANCHOR: here
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch19-advanced-features/no-listing-08-match-arms-different-types/Cargo.lock b/listings/ch19-advanced-features/no-listing-08-match-arms-different-types/Cargo.lock
new file mode 100644
index 00000000..7380c3c9
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-08-match-arms-different-types/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "types-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-08-match-arms-different-types/Cargo.toml b/listings/ch19-advanced-features/no-listing-08-match-arms-different-types/Cargo.toml
new file mode 100644
index 00000000..9b4ee689
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-08-match-arms-different-types/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "types-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-08-match-arms-different-types/src/main.rs b/listings/ch19-advanced-features/no-listing-08-match-arms-different-types/src/main.rs
new file mode 100644
index 00000000..6d56008a
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-08-match-arms-different-types/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let guess = "3";
+    // ANCHOR: here
+    let guess = match guess.trim().parse() {
+        Ok(_) => 5,
+        Err(_) => "hello",
+    };
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.lock b/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.lock
new file mode 100644
index 00000000..7380c3c9
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "types-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.toml b/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.toml
new file mode 100644
index 00000000..9b4ee689
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "types-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-09-unwrap-definition/src/lib.rs b/listings/ch19-advanced-features/no-listing-09-unwrap-definition/src/lib.rs
new file mode 100644
index 00000000..aa4f937f
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-09-unwrap-definition/src/lib.rs
@@ -0,0 +1,17 @@
+enum Option<T> {
+    Some(T),
+    None,
+}
+
+use crate::Option::*;
+
+// ANCHOR: here
+impl<T> Option<T> {
+    pub fn unwrap(self) -> T {
+        match self {
+            Some(val) => val,
+            None => panic!("called `Option::unwrap()` on a `None` value"),
+        }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch19-advanced-features/no-listing-10-loop-returns-never/Cargo.lock b/listings/ch19-advanced-features/no-listing-10-loop-returns-never/Cargo.lock
new file mode 100644
index 00000000..7380c3c9
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-10-loop-returns-never/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "types-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-10-loop-returns-never/Cargo.toml b/listings/ch19-advanced-features/no-listing-10-loop-returns-never/Cargo.toml
new file mode 100644
index 00000000..9b4ee689
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-10-loop-returns-never/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "types-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-10-loop-returns-never/src/main.rs b/listings/ch19-advanced-features/no-listing-10-loop-returns-never/src/main.rs
new file mode 100644
index 00000000..e7768913
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-10-loop-returns-never/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    print!("forever ");
+
+    loop {
+        print!("and ever ");
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/no-listing-11-cant-create-str/Cargo.lock b/listings/ch19-advanced-features/no-listing-11-cant-create-str/Cargo.lock
new file mode 100644
index 00000000..7380c3c9
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-11-cant-create-str/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "types-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-11-cant-create-str/Cargo.toml b/listings/ch19-advanced-features/no-listing-11-cant-create-str/Cargo.toml
new file mode 100644
index 00000000..9b4ee689
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-11-cant-create-str/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "types-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-11-cant-create-str/src/main.rs b/listings/ch19-advanced-features/no-listing-11-cant-create-str/src/main.rs
new file mode 100644
index 00000000..075d5110
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-11-cant-create-str/src/main.rs
@@ -0,0 +1,6 @@
+fn main() {
+    // ANCHOR: here
+    let s1: str = "Hello there!";
+    let s2: str = "How's it going?";
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/no-listing-12-generic-fn-definition/Cargo.lock b/listings/ch19-advanced-features/no-listing-12-generic-fn-definition/Cargo.lock
new file mode 100644
index 00000000..7380c3c9
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-12-generic-fn-definition/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "types-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-12-generic-fn-definition/Cargo.toml b/listings/ch19-advanced-features/no-listing-12-generic-fn-definition/Cargo.toml
new file mode 100644
index 00000000..9b4ee689
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-12-generic-fn-definition/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "types-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-12-generic-fn-definition/src/lib.rs b/listings/ch19-advanced-features/no-listing-12-generic-fn-definition/src/lib.rs
new file mode 100644
index 00000000..69186ddf
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-12-generic-fn-definition/src/lib.rs
@@ -0,0 +1,3 @@
+fn generic<T>(t: T) {
+    // --snip--
+}
diff --git a/listings/ch19-advanced-features/no-listing-13-generic-implicit-sized-bound/Cargo.lock b/listings/ch19-advanced-features/no-listing-13-generic-implicit-sized-bound/Cargo.lock
new file mode 100644
index 00000000..7380c3c9
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-13-generic-implicit-sized-bound/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "types-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-13-generic-implicit-sized-bound/Cargo.toml b/listings/ch19-advanced-features/no-listing-13-generic-implicit-sized-bound/Cargo.toml
new file mode 100644
index 00000000..9b4ee689
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-13-generic-implicit-sized-bound/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "types-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-13-generic-implicit-sized-bound/src/lib.rs b/listings/ch19-advanced-features/no-listing-13-generic-implicit-sized-bound/src/lib.rs
new file mode 100644
index 00000000..c2d00e21
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-13-generic-implicit-sized-bound/src/lib.rs
@@ -0,0 +1,3 @@
+fn generic<T: Sized>(t: T) {
+    // --snip--
+}
diff --git a/listings/ch19-advanced-features/no-listing-14-generic-maybe-sized/Cargo.lock b/listings/ch19-advanced-features/no-listing-14-generic-maybe-sized/Cargo.lock
new file mode 100644
index 00000000..7380c3c9
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-14-generic-maybe-sized/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "types-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-14-generic-maybe-sized/Cargo.toml b/listings/ch19-advanced-features/no-listing-14-generic-maybe-sized/Cargo.toml
new file mode 100644
index 00000000..9b4ee689
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-14-generic-maybe-sized/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "types-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-14-generic-maybe-sized/src/lib.rs b/listings/ch19-advanced-features/no-listing-14-generic-maybe-sized/src/lib.rs
new file mode 100644
index 00000000..e4722267
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-14-generic-maybe-sized/src/lib.rs
@@ -0,0 +1,3 @@
+fn generic<T: ?Sized>(t: &T) {
+    // --snip--
+}
diff --git a/listings/ch19-advanced-features/no-listing-15-map-closure/Cargo.lock b/listings/ch19-advanced-features/no-listing-15-map-closure/Cargo.lock
new file mode 100644
index 00000000..5f4173e1
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-15-map-closure/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-15-map-closure/Cargo.toml b/listings/ch19-advanced-features/no-listing-15-map-closure/Cargo.toml
new file mode 100644
index 00000000..2bed56c3
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-15-map-closure/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-15-map-closure/src/main.rs b/listings/ch19-advanced-features/no-listing-15-map-closure/src/main.rs
new file mode 100644
index 00000000..9372c0de
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-15-map-closure/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    let list_of_numbers = vec![1, 2, 3];
+    let list_of_strings: Vec<String> = list_of_numbers
+        .iter()
+        .map(|i| i.to_string())
+        .collect();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/no-listing-16-map-function/Cargo.lock b/listings/ch19-advanced-features/no-listing-16-map-function/Cargo.lock
new file mode 100644
index 00000000..5f4173e1
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-16-map-function/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-16-map-function/Cargo.toml b/listings/ch19-advanced-features/no-listing-16-map-function/Cargo.toml
new file mode 100644
index 00000000..2bed56c3
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-16-map-function/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-16-map-function/src/main.rs b/listings/ch19-advanced-features/no-listing-16-map-function/src/main.rs
new file mode 100644
index 00000000..66d50f89
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-16-map-function/src/main.rs
@@ -0,0 +1,9 @@
+fn main() {
+    // ANCHOR: here
+    let list_of_numbers = vec![1, 2, 3];
+    let list_of_strings: Vec<String> = list_of_numbers
+        .iter()
+        .map(ToString::to_string)
+        .collect();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/no-listing-17-map-initializer/Cargo.lock b/listings/ch19-advanced-features/no-listing-17-map-initializer/Cargo.lock
new file mode 100644
index 00000000..5f4173e1
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-17-map-initializer/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-17-map-initializer/Cargo.toml b/listings/ch19-advanced-features/no-listing-17-map-initializer/Cargo.toml
new file mode 100644
index 00000000..2bed56c3
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-17-map-initializer/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-17-map-initializer/src/main.rs b/listings/ch19-advanced-features/no-listing-17-map-initializer/src/main.rs
new file mode 100644
index 00000000..a237e424
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-17-map-initializer/src/main.rs
@@ -0,0 +1,13 @@
+fn main() {
+    // ANCHOR: here
+    enum Status {
+        Value(u32),
+        Stop,
+    }
+
+    let list_of_statuses: Vec<Status> =
+        (0u32..20)
+        .map(Status::Value)
+        .collect();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch19-advanced-features/no-listing-18-returns-closure/Cargo.lock b/listings/ch19-advanced-features/no-listing-18-returns-closure/Cargo.lock
new file mode 100644
index 00000000..5f4173e1
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-18-returns-closure/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-18-returns-closure/Cargo.toml b/listings/ch19-advanced-features/no-listing-18-returns-closure/Cargo.toml
new file mode 100644
index 00000000..2bed56c3
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-18-returns-closure/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-18-returns-closure/output.txt b/listings/ch19-advanced-features/no-listing-18-returns-closure/output.txt
new file mode 100644
index 00000000..8c897e53
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-18-returns-closure/output.txt
@@ -0,0 +1,30 @@
+$ cargo build
+   Compiling functions-example v0.1.0 (file:///projects/functions-example)
+error[E0277]: the size for values of type `(dyn std::ops::Fn(i32) -> i32 + 'static)` cannot be known at compilation time
+ --> src/lib.rs:1:25
+  |
+1 | fn returns_closure() -> dyn Fn(i32) -> i32 {
+  |                         ^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
+  |
+  = help: the trait `std::marker::Sized` is not implemented for `(dyn std::ops::Fn(i32) -> i32 + 'static)`
+  = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
+  = note: the return type of a function must have a statically known size
+
+error[E0308]: mismatched types
+ --> src/lib.rs:2:5
+  |
+1 | fn returns_closure() -> dyn Fn(i32) -> i32 {
+  |                         ------------------ expected `(dyn std::ops::Fn(i32) -> i32 + 'static)` because of return type
+2 |     |x| x + 1
+  |     ^^^^^^^^^ expected trait std::ops::Fn, found closure
+  |
+  = note: expected type `(dyn std::ops::Fn(i32) -> i32 + 'static)`
+             found type `[closure@src/lib.rs:2:5: 2:14]`
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0277, E0308.
+For more information about an error, try `rustc --explain E0277`.
+error: Could not compile `functions-example`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch19-advanced-features/no-listing-18-returns-closure/src/lib.rs b/listings/ch19-advanced-features/no-listing-18-returns-closure/src/lib.rs
new file mode 100644
index 00000000..d699ac34
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-18-returns-closure/src/lib.rs
@@ -0,0 +1,3 @@
+fn returns_closure() -> dyn Fn(i32) -> i32 {
+    |x| x + 1
+}
diff --git a/listings/ch19-advanced-features/no-listing-19-returns-closure-trait-object/Cargo.lock b/listings/ch19-advanced-features/no-listing-19-returns-closure-trait-object/Cargo.lock
new file mode 100644
index 00000000..5f4173e1
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-19-returns-closure-trait-object/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "functions-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-19-returns-closure-trait-object/Cargo.toml b/listings/ch19-advanced-features/no-listing-19-returns-closure-trait-object/Cargo.toml
new file mode 100644
index 00000000..2bed56c3
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-19-returns-closure-trait-object/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "functions-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-19-returns-closure-trait-object/src/lib.rs b/listings/ch19-advanced-features/no-listing-19-returns-closure-trait-object/src/lib.rs
new file mode 100644
index 00000000..b1140774
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-19-returns-closure-trait-object/src/lib.rs
@@ -0,0 +1,3 @@
+fn returns_closure() -> Box<dyn Fn(i32) -> i32> {
+    Box::new(|x| x + 1)
+}
diff --git a/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/hello_macro/Cargo.lock b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/hello_macro/Cargo.lock
new file mode 100644
index 00000000..be8c994f
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/hello_macro/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello_macro"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/hello_macro/Cargo.toml b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/hello_macro/Cargo.toml
new file mode 100644
index 00000000..5a93a685
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/hello_macro/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello_macro"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/hello_macro/src/lib.rs b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/hello_macro/src/lib.rs
new file mode 100644
index 00000000..e7479318
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/hello_macro/src/lib.rs
@@ -0,0 +1,3 @@
+pub trait HelloMacro {
+    fn hello_macro();
+}
diff --git a/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/pancakes/Cargo.lock b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/pancakes/Cargo.lock
new file mode 100644
index 00000000..757fb877
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/pancakes/Cargo.lock
@@ -0,0 +1,11 @@
+[[package]]
+name = "hello_macro"
+version = "0.1.0"
+
+[[package]]
+name = "pancakes"
+version = "0.1.0"
+dependencies = [
+ "hello_macro 0.1.0",
+]
+
diff --git a/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/pancakes/Cargo.toml b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/pancakes/Cargo.toml
new file mode 100644
index 00000000..4b6c267b
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/pancakes/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "pancakes"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+hello_macro = { path = "../hello_macro" }
\ No newline at end of file
diff --git a/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/pancakes/src/main.rs b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/pancakes/src/main.rs
new file mode 100644
index 00000000..10b028b2
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/pancakes/src/main.rs
@@ -0,0 +1,13 @@
+use hello_macro::HelloMacro;
+
+struct Pancakes;
+
+impl HelloMacro for Pancakes {
+    fn hello_macro() {
+        println!("Hello, Macro! My name is Pancakes!");
+    }
+}
+
+fn main() {
+    Pancakes::hello_macro();
+}
diff --git a/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/Cargo.lock b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/Cargo.lock
new file mode 100644
index 00000000..be8c994f
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello_macro"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/Cargo.toml b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/Cargo.toml
new file mode 100644
index 00000000..5a93a685
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello_macro"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/Cargo.lock b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/Cargo.lock
new file mode 100644
index 00000000..56396d13
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/Cargo.lock
@@ -0,0 +1,44 @@
+[[package]]
+name = "hello_macro_derive"
+version = "0.1.0"
+dependencies = [
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "0.4.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "quote"
+version = "0.6.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "syn"
+version = "0.14.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "unicode-xid"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[metadata]
+"checksum proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)" = "64c827cea7a7ab30ce4593e5e04d7a11617ad6ece2fa230605a78b00ff965316"
+"checksum quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "faf4799c5d274f3868a4aae320a0a182cbd2baee377b378f080e16a23e9d80db"
+"checksum syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)" = "261ae9ecaa397c42b960649561949d69311f08eeaea86a65696e6e46517cf741"
+"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
diff --git a/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/Cargo.toml b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/Cargo.toml
new file mode 100644
index 00000000..a6df8313
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "hello_macro_derive"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[lib]
+proc-macro = true
+
+[dependencies]
+syn = "0.14.4"
+quote = "0.6.3"
diff --git a/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/src/lib.rs b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/src/lib.rs
new file mode 100644
index 00000000..2ba3d8a6
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/hello_macro_derive/src/lib.rs
@@ -0,0 +1,27 @@
+extern crate proc_macro;
+
+use crate::proc_macro::TokenStream;
+use quote::quote;
+use syn;
+
+#[proc_macro_derive(HelloMacro)]
+pub fn hello_macro_derive(input: TokenStream) -> TokenStream {
+    // Construct a representation of Rust code as a syntax tree
+    // that we can manipulate
+    let ast = syn::parse(input).unwrap();
+
+    // Build the trait implementation
+    impl_hello_macro(&ast)
+}
+
+fn impl_hello_macro(ast: &syn::DeriveInput) -> TokenStream {
+    let name = &ast.ident;
+    let gen = quote! {
+        impl HelloMacro for #name {
+            fn hello_macro() {
+                println!("Hello, Macro! My name is {}", stringify!(#name));
+            }
+        }
+    };
+    gen.into()
+}
diff --git a/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/src/lib.rs b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/src/lib.rs
new file mode 100644
index 00000000..e7479318
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/src/lib.rs
@@ -0,0 +1,3 @@
+pub trait HelloMacro {
+    fn hello_macro();
+}
diff --git a/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/src/main.rs b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/src/main.rs
new file mode 100644
index 00000000..10b028b2
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-21-pancakes/hello_macro/src/main.rs
@@ -0,0 +1,13 @@
+use hello_macro::HelloMacro;
+
+struct Pancakes;
+
+impl HelloMacro for Pancakes {
+    fn hello_macro() {
+        println!("Hello, Macro! My name is Pancakes!");
+    }
+}
+
+fn main() {
+    Pancakes::hello_macro();
+}
diff --git a/listings/ch19-advanced-features/no-listing-21-pancakes/pancakes/Cargo.lock b/listings/ch19-advanced-features/no-listing-21-pancakes/pancakes/Cargo.lock
new file mode 100644
index 00000000..aa769a82
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-21-pancakes/pancakes/Cargo.lock
@@ -0,0 +1,56 @@
+[[package]]
+name = "hello_macro"
+version = "0.1.0"
+
+[[package]]
+name = "hello_macro_derive"
+version = "0.1.0"
+dependencies = [
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "pancakes"
+version = "0.1.0"
+dependencies = [
+ "hello_macro 0.1.0",
+ "hello_macro_derive 0.1.0",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "0.4.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "quote"
+version = "0.6.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "syn"
+version = "0.14.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "unicode-xid"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[metadata]
+"checksum proc-macro2 0.4.29 (registry+https://github.com/rust-lang/crates.io-index)" = "64c827cea7a7ab30ce4593e5e04d7a11617ad6ece2fa230605a78b00ff965316"
+"checksum quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "faf4799c5d274f3868a4aae320a0a182cbd2baee377b378f080e16a23e9d80db"
+"checksum syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)" = "261ae9ecaa397c42b960649561949d69311f08eeaea86a65696e6e46517cf741"
+"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
diff --git a/listings/ch19-advanced-features/no-listing-21-pancakes/pancakes/Cargo.toml b/listings/ch19-advanced-features/no-listing-21-pancakes/pancakes/Cargo.toml
new file mode 100644
index 00000000..cc0addaa
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-21-pancakes/pancakes/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "pancakes"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
+hello_macro = { path = "../hello_macro" }
+hello_macro_derive = { path = "../hello_macro/hello_macro_derive" }
diff --git a/listings/ch19-advanced-features/no-listing-21-pancakes/pancakes/src/main.rs b/listings/ch19-advanced-features/no-listing-21-pancakes/pancakes/src/main.rs
new file mode 100644
index 00000000..468c30aa
--- /dev/null
+++ b/listings/ch19-advanced-features/no-listing-21-pancakes/pancakes/src/main.rs
@@ -0,0 +1,9 @@
+use hello_macro::HelloMacro;
+use hello_macro_derive::HelloMacro;
+
+#[derive(HelloMacro)]
+struct Pancakes;
+
+fn main() {
+    Pancakes::hello_macro();
+}
diff --git a/listings/ch19-advanced-features/output-only-01-missing-unsafe/Cargo.lock b/listings/ch19-advanced-features/output-only-01-missing-unsafe/Cargo.lock
new file mode 100644
index 00000000..026e5ee5
--- /dev/null
+++ b/listings/ch19-advanced-features/output-only-01-missing-unsafe/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "unsafe-example"
+version = "0.1.0"
+
diff --git a/listings/ch19-advanced-features/output-only-01-missing-unsafe/Cargo.toml b/listings/ch19-advanced-features/output-only-01-missing-unsafe/Cargo.toml
new file mode 100644
index 00000000..aabe3bdf
--- /dev/null
+++ b/listings/ch19-advanced-features/output-only-01-missing-unsafe/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "unsafe-example"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch19-advanced-features/output-only-01-missing-unsafe/output.txt b/listings/ch19-advanced-features/output-only-01-missing-unsafe/output.txt
new file mode 100644
index 00000000..1adca2cd
--- /dev/null
+++ b/listings/ch19-advanced-features/output-only-01-missing-unsafe/output.txt
@@ -0,0 +1,16 @@
+$ cargo run
+   Compiling unsafe-example v0.1.0 (file:///projects/unsafe-example)
+error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ --> src/main.rs:4:5
+  |
+4 |     dangerous();
+  |     ^^^^^^^^^^^ call to unsafe function
+  |
+  = note: consult the function's documentation for information on how to avoid undefined behavior
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0133`.
+error: Could not compile `unsafe-example`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch19-advanced-features/output-only-01-missing-unsafe/src/main.rs b/listings/ch19-advanced-features/output-only-01-missing-unsafe/src/main.rs
new file mode 100644
index 00000000..01305be7
--- /dev/null
+++ b/listings/ch19-advanced-features/output-only-01-missing-unsafe/src/main.rs
@@ -0,0 +1,7 @@
+fn main() {
+    // ANCHOR: here
+    unsafe fn dangerous() {}
+
+    dangerous();
+    // ANCHOR_END: here
+}
diff --git a/listings/ch20-web-server/listing-20-01/Cargo.lock b/listings/ch20-web-server/listing-20-01/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-01/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-01/Cargo.toml b/listings/ch20-web-server/listing-20-01/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-01/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-01/src/main.rs b/listings/ch20-web-server/listing-20-01/src/main.rs
new file mode 100644
index 00000000..d868c3ec
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-01/src/main.rs
@@ -0,0 +1,11 @@
+use std::net::TcpListener;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        println!("Connection established!");
+    }
+}
diff --git a/listings/ch20-web-server/listing-20-02/Cargo.lock b/listings/ch20-web-server/listing-20-02/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-02/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-02/Cargo.toml b/listings/ch20-web-server/listing-20-02/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-02/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-02/src/main.rs b/listings/ch20-web-server/listing-20-02/src/main.rs
new file mode 100644
index 00000000..59424646
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-02/src/main.rs
@@ -0,0 +1,21 @@
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        handle_connection(stream);
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+
+    stream.read(&mut buffer).unwrap();
+
+    println!("Request: {}", String::from_utf8_lossy(&buffer[..]));
+}
diff --git a/listings/ch20-web-server/listing-20-03/Cargo.lock b/listings/ch20-web-server/listing-20-03/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-03/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-03/Cargo.toml b/listings/ch20-web-server/listing-20-03/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-03/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-03/src/main.rs b/listings/ch20-web-server/listing-20-03/src/main.rs
new file mode 100644
index 00000000..c62319b6
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-03/src/main.rs
@@ -0,0 +1,26 @@
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        handle_connection(stream);
+    }
+}
+
+// ANCHOR: here
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+
+    stream.read(&mut buffer).unwrap();
+
+    let response = "HTTP/1.1 200 OK\r\n\r\n";
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
+// ANCHOR_END: here
diff --git a/listings/ch20-web-server/listing-20-04/Cargo.lock b/listings/ch20-web-server/listing-20-04/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-04/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-04/Cargo.toml b/listings/ch20-web-server/listing-20-04/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-04/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-04/hello.html b/listings/ch20-web-server/listing-20-04/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-04/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-04/src/main.rs b/listings/ch20-web-server/listing-20-04/src/main.rs
new file mode 100644
index 00000000..b9739ba7
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-04/src/main.rs
@@ -0,0 +1,24 @@
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        handle_connection(stream);
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+
+    stream.read(&mut buffer).unwrap();
+
+    let response = "HTTP/1.1 200 OK\r\n\r\n";
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-05/Cargo.lock b/listings/ch20-web-server/listing-20-05/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-05/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-05/Cargo.toml b/listings/ch20-web-server/listing-20-05/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-05/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-05/hello.html b/listings/ch20-web-server/listing-20-05/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-05/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-05/src/main.rs b/listings/ch20-web-server/listing-20-05/src/main.rs
new file mode 100644
index 00000000..073dafc0
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-05/src/main.rs
@@ -0,0 +1,32 @@
+// ANCHOR: here
+use std::fs;
+// --snip--
+
+// ANCHOR_END: here
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        handle_connection(stream);
+    }
+}
+
+// ANCHOR: here
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let contents = fs::read_to_string("hello.html").unwrap();
+
+    let response = format!("HTTP/1.1 200 OK\r\n\r\n{}", contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
+// ANCHOR_END: here
diff --git a/listings/ch20-web-server/listing-20-06/Cargo.lock b/listings/ch20-web-server/listing-20-06/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-06/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-06/Cargo.toml b/listings/ch20-web-server/listing-20-06/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-06/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-06/hello.html b/listings/ch20-web-server/listing-20-06/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-06/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-06/src/main.rs b/listings/ch20-web-server/listing-20-06/src/main.rs
new file mode 100644
index 00000000..3e894322
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-06/src/main.rs
@@ -0,0 +1,36 @@
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        handle_connection(stream);
+    }
+}
+
+// ANCHOR: here
+// --snip--
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+
+    if buffer.starts_with(get) {
+        let contents = fs::read_to_string("hello.html").unwrap();
+
+        let response = format!("HTTP/1.1 200 OK\r\n\r\n{}", contents);
+
+        stream.write(response.as_bytes()).unwrap();
+        stream.flush().unwrap();
+    } else {
+        // some other request
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch20-web-server/listing-20-07/Cargo.lock b/listings/ch20-web-server/listing-20-07/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-07/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-07/Cargo.toml b/listings/ch20-web-server/listing-20-07/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-07/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-07/hello.html b/listings/ch20-web-server/listing-20-07/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-07/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-07/src/main.rs b/listings/ch20-web-server/listing-20-07/src/main.rs
new file mode 100644
index 00000000..06e80d0f
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-07/src/main.rs
@@ -0,0 +1,42 @@
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        handle_connection(stream);
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+
+    if buffer.starts_with(get) {
+        let contents = fs::read_to_string("hello.html").unwrap();
+
+        let response = format!("HTTP/1.1 200 OK\r\n\r\n{}", contents);
+
+        stream.write(response.as_bytes()).unwrap();
+        stream.flush().unwrap();
+        // ANCHOR: here
+        // --snip--
+
+    } else {
+        let status_line = "HTTP/1.1 404 NOT FOUND\r\n\r\n";
+        let contents = fs::read_to_string("404.html").unwrap();
+
+        let response = format!("{}{}", status_line, contents);
+
+        stream.write(response.as_bytes()).unwrap();
+        stream.flush().unwrap();
+    }
+    // ANCHOR_END: here
+}
diff --git a/listings/ch20-web-server/listing-20-08/404.html b/listings/ch20-web-server/listing-20-08/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-08/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-08/Cargo.lock b/listings/ch20-web-server/listing-20-08/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-08/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-08/Cargo.toml b/listings/ch20-web-server/listing-20-08/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-08/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-08/hello.html b/listings/ch20-web-server/listing-20-08/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-08/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-08/src/main.rs b/listings/ch20-web-server/listing-20-08/src/main.rs
new file mode 100644
index 00000000..00303a42
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-08/src/main.rs
@@ -0,0 +1,38 @@
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        handle_connection(stream);
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+
+    if buffer.starts_with(get) {
+        let contents = fs::read_to_string("hello.html").unwrap();
+
+        let response = format!("HTTP/1.1 200 OK\r\n\r\n{}", contents);
+
+        stream.write(response.as_bytes()).unwrap();
+        stream.flush().unwrap();
+    } else {
+        let status_line = "HTTP/1.1 404 NOT FOUND\r\n\r\n";
+        let contents = fs::read_to_string("404.html").unwrap();
+
+        let response = format!("{}{}", status_line, contents);
+
+        stream.write(response.as_bytes()).unwrap();
+        stream.flush().unwrap();
+    }
+}
diff --git a/listings/ch20-web-server/listing-20-09/404.html b/listings/ch20-web-server/listing-20-09/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-09/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-09/Cargo.lock b/listings/ch20-web-server/listing-20-09/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-09/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-09/Cargo.toml b/listings/ch20-web-server/listing-20-09/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-09/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-09/hello.html b/listings/ch20-web-server/listing-20-09/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-09/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-09/src/main.rs b/listings/ch20-web-server/listing-20-09/src/main.rs
new file mode 100644
index 00000000..fbd2fbf7
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-09/src/main.rs
@@ -0,0 +1,42 @@
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        handle_connection(stream);
+    }
+}
+
+// ANCHOR: here
+// --snip--
+
+fn handle_connection(mut stream: TcpStream) {
+    // --snip--
+
+    // ANCHOR_END: here
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+
+    // ANCHOR: here
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
+// ANCHOR_END: here
diff --git a/listings/ch20-web-server/listing-20-10/404.html b/listings/ch20-web-server/listing-20-10/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-10/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-10/Cargo.lock b/listings/ch20-web-server/listing-20-10/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-10/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-10/Cargo.toml b/listings/ch20-web-server/listing-20-10/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-10/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-10/hello.html b/listings/ch20-web-server/listing-20-10/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-10/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-10/src/main.rs b/listings/ch20-web-server/listing-20-10/src/main.rs
new file mode 100644
index 00000000..8fdbf5d4
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-10/src/main.rs
@@ -0,0 +1,53 @@
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+// ANCHOR: here
+use std::thread;
+use std::time::Duration;
+// --snip--
+// ANCHOR_END: here
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        handle_connection(stream);
+    }
+}
+// ANCHOR: here
+
+fn handle_connection(mut stream: TcpStream) {
+    // --snip--
+
+    // ANCHOR_END: here
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    // ANCHOR: here
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    // --snip--
+    // ANCHOR_END: here
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+    // ANCHOR: here
+}
+// ANCHOR_END: here
diff --git a/listings/ch20-web-server/listing-20-11/404.html b/listings/ch20-web-server/listing-20-11/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-11/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-11/Cargo.lock b/listings/ch20-web-server/listing-20-11/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-11/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-11/Cargo.toml b/listings/ch20-web-server/listing-20-11/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-11/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-11/hello.html b/listings/ch20-web-server/listing-20-11/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-11/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-11/src/main.rs b/listings/ch20-web-server/listing-20-11/src/main.rs
new file mode 100644
index 00000000..0d44625b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-11/src/main.rs
@@ -0,0 +1,44 @@
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+// ANCHOR: here
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        thread::spawn(|| {
+            handle_connection(stream);
+        });
+    }
+}
+// ANCHOR_END: here
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-12/404.html b/listings/ch20-web-server/listing-20-12/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-12/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-12/Cargo.lock b/listings/ch20-web-server/listing-20-12/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-12/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-12/Cargo.toml b/listings/ch20-web-server/listing-20-12/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-12/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-12/hello.html b/listings/ch20-web-server/listing-20-12/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-12/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-12/output.txt b/listings/ch20-web-server/listing-20-12/output.txt
new file mode 100644
index 00000000..77840969
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-12/output.txt
@@ -0,0 +1,14 @@
+$ cargo check
+    Checking hello v0.1.0 (file:///projects/hello)
+error[E0433]: failed to resolve: use of undeclared type or module `ThreadPool`
+  --> src/main.rs:10:16
+   |
+10 |     let pool = ThreadPool::new(4);
+   |                ^^^^^^^^^^ use of undeclared type or module `ThreadPool`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0433`.
+error: Could not compile `hello`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch20-web-server/listing-20-12/src/main.rs b/listings/ch20-web-server/listing-20-12/src/main.rs
new file mode 100644
index 00000000..c0644f6e
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-12/src/main.rs
@@ -0,0 +1,45 @@
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+// ANCHOR: here
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+// ANCHOR_END: here
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-13/404.html b/listings/ch20-web-server/listing-20-13/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-13/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-13/Cargo.lock b/listings/ch20-web-server/listing-20-13/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-13/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-13/Cargo.toml b/listings/ch20-web-server/listing-20-13/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-13/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-13/hello.html b/listings/ch20-web-server/listing-20-13/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-13/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-13/src/bin/main.rs b/listings/ch20-web-server/listing-20-13/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-13/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-13/src/lib.rs b/listings/ch20-web-server/listing-20-13/src/lib.rs
new file mode 100644
index 00000000..1ce57a4e
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-13/src/lib.rs
@@ -0,0 +1,31 @@
+pub struct ThreadPool;
+
+// ANCHOR: here
+impl ThreadPool {
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        ThreadPool
+    }
+
+    // --snip--
+    // ANCHOR_END: here
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+
+    }
+    // ANCHOR: here
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch20-web-server/listing-20-14/404.html b/listings/ch20-web-server/listing-20-14/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-14/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-14/Cargo.lock b/listings/ch20-web-server/listing-20-14/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-14/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-14/Cargo.toml b/listings/ch20-web-server/listing-20-14/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-14/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-14/hello.html b/listings/ch20-web-server/listing-20-14/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-14/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-14/src/bin/main.rs b/listings/ch20-web-server/listing-20-14/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-14/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-14/src/lib.rs b/listings/ch20-web-server/listing-20-14/src/lib.rs
new file mode 100644
index 00000000..9ce4b16f
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-14/src/lib.rs
@@ -0,0 +1,44 @@
+// ANCHOR: here
+use std::thread;
+
+pub struct ThreadPool {
+    threads: Vec<thread::JoinHandle<()>>,
+}
+
+impl ThreadPool {
+    // --snip--
+    // ANCHOR_END: here
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    // ANCHOR: here
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let mut threads = Vec::with_capacity(size);
+
+        for _ in 0..size {
+            // create some threads and store them in the vector
+        }
+
+        ThreadPool {
+            threads
+        }
+    }
+
+    // --snip--
+    // ANCHOR_END: here
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+
+    }
+    // ANCHOR: here
+}
+// ANCHOR_END: here
diff --git a/listings/ch20-web-server/listing-20-15/404.html b/listings/ch20-web-server/listing-20-15/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-15/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-15/Cargo.lock b/listings/ch20-web-server/listing-20-15/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-15/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-15/Cargo.toml b/listings/ch20-web-server/listing-20-15/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-15/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-15/hello.html b/listings/ch20-web-server/listing-20-15/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-15/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-15/src/bin/main.rs b/listings/ch20-web-server/listing-20-15/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-15/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-15/src/lib.rs b/listings/ch20-web-server/listing-20-15/src/lib.rs
new file mode 100644
index 00000000..f1b1cd98
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-15/src/lib.rs
@@ -0,0 +1,61 @@
+// ANCHOR: here
+use std::thread;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+}
+
+impl ThreadPool {
+    // --snip--
+    // ANCHOR_END: here
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    // ANCHOR: here
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id));
+        }
+
+        ThreadPool {
+            workers
+        }
+    }
+    // --snip--
+    // ANCHOR_END: here
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+
+    }
+    // ANCHOR: here
+}
+
+struct Worker {
+    id: usize,
+    thread: thread::JoinHandle<()>,
+}
+
+impl Worker {
+    fn new(id: usize) -> Worker {
+        let thread = thread::spawn(|| {});
+
+        Worker {
+            id,
+            thread,
+        }
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch20-web-server/listing-20-16/404.html b/listings/ch20-web-server/listing-20-16/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-16/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-16/Cargo.lock b/listings/ch20-web-server/listing-20-16/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-16/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-16/Cargo.toml b/listings/ch20-web-server/listing-20-16/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-16/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-16/hello.html b/listings/ch20-web-server/listing-20-16/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-16/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-16/src/bin/main.rs b/listings/ch20-web-server/listing-20-16/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-16/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-16/src/lib.rs b/listings/ch20-web-server/listing-20-16/src/lib.rs
new file mode 100644
index 00000000..11591d31
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-16/src/lib.rs
@@ -0,0 +1,69 @@
+use std::thread;
+// ANCHOR: here
+// --snip--
+use std::sync::mpsc;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+struct Job;
+
+impl ThreadPool {
+    // --snip--
+    // ANCHOR_END: here
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    // ANCHOR: here
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+    // --snip--
+    // ANCHOR_END: here
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+
+    }
+    // ANCHOR: here
+}
+// ANCHOR_END: here
+
+struct Worker {
+    id: usize,
+    thread: thread::JoinHandle<()>,
+}
+
+impl Worker {
+    fn new(id: usize) -> Worker {
+        let thread = thread::spawn(|| {});
+
+        Worker {
+            id,
+            thread,
+        }
+    }
+}
+
+fn main() {}
diff --git a/listings/ch20-web-server/listing-20-17/404.html b/listings/ch20-web-server/listing-20-17/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-17/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-17/Cargo.lock b/listings/ch20-web-server/listing-20-17/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-17/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-17/Cargo.toml b/listings/ch20-web-server/listing-20-17/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-17/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-17/hello.html b/listings/ch20-web-server/listing-20-17/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-17/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-17/output.txt b/listings/ch20-web-server/listing-20-17/output.txt
new file mode 100644
index 00000000..61748690
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-17/output.txt
@@ -0,0 +1,17 @@
+$ cargo check
+    Checking hello v0.1.0 (file:///projects/hello)
+error[E0382]: use of moved value: `receiver`
+  --> src/lib.rs:27:42
+   |
+22 |         let (sender, receiver) = mpsc::channel();
+   |                      -------- move occurs because `receiver` has type `std::sync::mpsc::Receiver<Job>`, which does not implement the `Copy` trait
+...
+27 |             workers.push(Worker::new(id, receiver));
+   |                                          ^^^^^^^^ value moved here, in previous iteration of loop
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0382`.
+error: Could not compile `hello`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch20-web-server/listing-20-17/src/bin/main.rs b/listings/ch20-web-server/listing-20-17/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-17/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-17/src/lib.rs b/listings/ch20-web-server/listing-20-17/src/lib.rs
new file mode 100644
index 00000000..80e34c36
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-17/src/lib.rs
@@ -0,0 +1,73 @@
+use std::thread;
+use std::sync::mpsc;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+struct Job;
+
+// ANCHOR: here
+impl ThreadPool {
+    // --snip--
+    // ANCHOR_END: here
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    // ANCHOR: here
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, receiver));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+    // --snip--
+    // ANCHOR_END: here
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+
+    }
+    // ANCHOR: here
+}
+
+// --snip--
+
+// ANCHOR_END: here
+
+struct Worker {
+    id: usize,
+    thread: thread::JoinHandle<()>,
+}
+
+// ANCHOR: here
+impl Worker {
+    fn new(id: usize, receiver: mpsc::Receiver<Job>) -> Worker {
+        let thread = thread::spawn(|| {
+            receiver;
+        });
+
+        Worker {
+            id,
+            thread,
+        }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch20-web-server/listing-20-18/404.html b/listings/ch20-web-server/listing-20-18/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-18/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-18/Cargo.lock b/listings/ch20-web-server/listing-20-18/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-18/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-18/Cargo.toml b/listings/ch20-web-server/listing-20-18/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-18/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-18/hello.html b/listings/ch20-web-server/listing-20-18/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-18/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-18/src/bin/main.rs b/listings/ch20-web-server/listing-20-18/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-18/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-18/src/lib.rs b/listings/ch20-web-server/listing-20-18/src/lib.rs
new file mode 100644
index 00000000..6302b12c
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-18/src/lib.rs
@@ -0,0 +1,85 @@
+use std::thread;
+use std::sync::mpsc;
+// ANCHOR: here
+use std::sync::Arc;
+use std::sync::Mutex;
+// --snip--
+
+// ANCHOR_END: here
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+struct Job;
+
+// ANCHOR: here
+impl ThreadPool {
+    // --snip--
+    // ANCHOR_END: here
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    // ANCHOR: here
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+
+    // --snip--
+    // ANCHOR_END: here
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+
+    }
+    // ANCHOR: here
+}
+
+// --snip--
+
+// ANCHOR_END: here
+struct Worker {
+    id: usize,
+    thread: thread::JoinHandle<()>,
+}
+
+// ANCHOR: here
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
+        // --snip--
+        // ANCHOR_END: here
+        let thread = thread::spawn(|| {
+            receiver;
+        });
+
+        Worker {
+            id,
+            thread,
+        }
+        // ANCHOR: here
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch20-web-server/listing-20-19/404.html b/listings/ch20-web-server/listing-20-19/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-19/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-19/Cargo.lock b/listings/ch20-web-server/listing-20-19/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-19/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-19/Cargo.toml b/listings/ch20-web-server/listing-20-19/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-19/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-19/hello.html b/listings/ch20-web-server/listing-20-19/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-19/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-19/src/bin/main.rs b/listings/ch20-web-server/listing-20-19/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-19/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-19/src/lib.rs b/listings/ch20-web-server/listing-20-19/src/lib.rs
new file mode 100644
index 00000000..1b684136
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-19/src/lib.rs
@@ -0,0 +1,77 @@
+use std::thread;
+use std::sync::mpsc;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+// ANCHOR: here
+// --snip--
+
+type Job = Box<dyn FnOnce() + Send + 'static>;
+
+impl ThreadPool {
+    // --snip--
+    // ANCHOR_END: here
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+    // ANCHOR: here
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+        let job = Box::new(f);
+
+        self.sender.send(job).unwrap();
+    }
+}
+
+// --snip--
+// ANCHOR_END: here
+
+struct Worker {
+    id: usize,
+    thread: thread::JoinHandle<()>,
+}
+
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
+        let thread = thread::spawn(|| {
+            receiver;
+        });
+
+        Worker {
+            id,
+            thread,
+        }
+    }
+}
+
+fn main() {}
diff --git a/listings/ch20-web-server/listing-20-20/404.html b/listings/ch20-web-server/listing-20-20/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-20/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-20/Cargo.lock b/listings/ch20-web-server/listing-20-20/Cargo.lock
new file mode 100644
index 00000000..f2d069f4
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-20/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-20/Cargo.toml b/listings/ch20-web-server/listing-20-20/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-20/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-20/hello.html b/listings/ch20-web-server/listing-20-20/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-20/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-20/src/bin/main.rs b/listings/ch20-web-server/listing-20-20/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-20/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-20/src/lib.rs b/listings/ch20-web-server/listing-20-20/src/lib.rs
new file mode 100644
index 00000000..71eb9c6f
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-20/src/lib.rs
@@ -0,0 +1,76 @@
+use std::thread;
+use std::sync::mpsc;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+type Job = Box<dyn FnOnce() + Send + 'static>;
+
+impl ThreadPool {
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+        let job = Box::new(f);
+
+        self.sender.send(job).unwrap();
+    }
+}
+
+struct Worker {
+    id: usize,
+    thread: thread::JoinHandle<()>,
+}
+
+// ANCHOR: here
+// --snip--
+
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
+        let thread = thread::spawn(move || {
+            loop {
+                let job = receiver.lock().unwrap().recv().unwrap();
+
+                println!("Worker {} got a job; executing.", id);
+
+                job();
+            }
+        });
+
+        Worker {
+            id,
+            thread,
+        }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch20-web-server/listing-20-21/404.html b/listings/ch20-web-server/listing-20-21/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-21/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-21/Cargo.lock b/listings/ch20-web-server/listing-20-21/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-21/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-21/Cargo.toml b/listings/ch20-web-server/listing-20-21/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-21/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-21/hello.html b/listings/ch20-web-server/listing-20-21/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-21/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-21/src/bin/main.rs b/listings/ch20-web-server/listing-20-21/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-21/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-21/src/lib.rs b/listings/ch20-web-server/listing-20-21/src/lib.rs
new file mode 100644
index 00000000..d5584569
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-21/src/lib.rs
@@ -0,0 +1,73 @@
+use std::thread;
+use std::sync::mpsc;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+type Job = Box<dyn FnOnce() + Send + 'static>;
+
+impl ThreadPool {
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+        let job = Box::new(f);
+
+        self.sender.send(job).unwrap();
+    }
+}
+
+struct Worker {
+    id: usize,
+    thread: thread::JoinHandle<()>,
+}
+// ANCHOR: here
+// --snip--
+
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
+        let thread = thread::spawn(move || {
+            while let Ok(job) = receiver.lock().unwrap().recv() {
+                println!("Worker {} got a job; executing.", id);
+
+                job();
+            }
+        });
+
+        Worker {
+            id,
+            thread,
+        }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch20-web-server/listing-20-22/404.html b/listings/ch20-web-server/listing-20-22/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-22/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-22/Cargo.lock b/listings/ch20-web-server/listing-20-22/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-22/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-22/Cargo.toml b/listings/ch20-web-server/listing-20-22/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-22/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-22/hello.html b/listings/ch20-web-server/listing-20-22/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-22/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-22/output.txt b/listings/ch20-web-server/listing-20-22/output.txt
new file mode 100644
index 00000000..94ed2771
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-22/output.txt
@@ -0,0 +1,14 @@
+$ cargo check
+    Checking hello v0.1.0 (file:///projects/hello)
+error[E0507]: cannot move out of `worker.thread` which is behind a mutable reference
+  --> src/lib.rs:55:13
+   |
+55 |             worker.thread.join().unwrap();
+   |             ^^^^^^^^^^^^^ move occurs because `worker.thread` has type `std::thread::JoinHandle<()>`, which does not implement the `Copy` trait
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0507`.
+error: Could not compile `hello`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch20-web-server/listing-20-22/src/bin/main.rs b/listings/ch20-web-server/listing-20-22/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-22/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-22/src/lib.rs b/listings/ch20-web-server/listing-20-22/src/lib.rs
new file mode 100644
index 00000000..01d08c1c
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-22/src/lib.rs
@@ -0,0 +1,84 @@
+use std::thread;
+use std::sync::mpsc;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+type Job = Box<dyn FnOnce() + Send + 'static>;
+
+impl ThreadPool {
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+        let job = Box::new(f);
+
+        self.sender.send(job).unwrap();
+    }
+}
+
+// ANCHOR: here
+impl Drop for ThreadPool {
+    fn drop(&mut self) {
+        for worker in &mut self.workers {
+            println!("Shutting down worker {}", worker.id);
+
+            worker.thread.join().unwrap();
+        }
+    }
+}
+// ANCHOR_END: here
+
+struct Worker {
+    id: usize,
+    thread: thread::JoinHandle<()>,
+}
+
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
+        let thread = thread::spawn(move || {
+            loop {
+                let job = receiver.lock().unwrap().recv().unwrap();
+
+                println!("Worker {} got a job; executing.", id);
+
+                job();
+            }
+        });
+
+        Worker {
+            id,
+            thread,
+        }
+    }
+}
diff --git a/listings/ch20-web-server/listing-20-23/404.html b/listings/ch20-web-server/listing-20-23/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-23/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-23/Cargo.lock b/listings/ch20-web-server/listing-20-23/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-23/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-23/Cargo.toml b/listings/ch20-web-server/listing-20-23/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-23/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-23/hello.html b/listings/ch20-web-server/listing-20-23/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-23/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-23/src/bin/main.rs b/listings/ch20-web-server/listing-20-23/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-23/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-23/src/lib.rs b/listings/ch20-web-server/listing-20-23/src/lib.rs
new file mode 100644
index 00000000..f590a44b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-23/src/lib.rs
@@ -0,0 +1,114 @@
+use std::thread;
+use std::sync::mpsc;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+// ANCHOR: here
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Message>,
+}
+
+// --snip--
+
+// ANCHOR_END: here
+type Job = Box<dyn FnOnce() + Send + 'static>;
+
+enum Message {
+    NewJob(Job),
+    Terminate,
+}
+
+// ANCHOR: here
+impl ThreadPool {
+    // --snip--
+
+    // ANCHOR_END: here
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+
+    // ANCHOR: here
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+        let job = Box::new(f);
+
+        self.sender.send(Message::NewJob(job)).unwrap();
+    }
+}
+
+// --snip--
+
+// ANCHOR_END: here
+impl Drop for ThreadPool {
+    fn drop(&mut self) {
+        for worker in &mut self.workers {
+            println!("Shutting down worker {}", worker.id);
+
+            if let Some(thread) = worker.thread.take() {
+                thread.join().unwrap();
+            }
+        }
+    }
+}
+
+struct Worker {
+    id: usize,
+    thread: Option<thread::JoinHandle<()>>,
+}
+
+// ANCHOR: here
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Message>>>) ->
+        Worker {
+
+        let thread = thread::spawn(move ||{
+            loop {
+                let message = receiver.lock().unwrap().recv().unwrap();
+
+                match message {
+                    Message::NewJob(job) => {
+                        println!("Worker {} got a job; executing.", id);
+
+                        job();
+                    },
+                    Message::Terminate => {
+                        println!("Worker {} was told to terminate.", id);
+
+                        break;
+                    },
+                }
+            }
+        });
+
+        Worker {
+            id,
+            thread: Some(thread),
+        }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch20-web-server/listing-20-24/404.html b/listings/ch20-web-server/listing-20-24/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-24/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-24/Cargo.lock b/listings/ch20-web-server/listing-20-24/Cargo.lock
new file mode 100644
index 00000000..f2d069f4
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-24/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-24/Cargo.toml b/listings/ch20-web-server/listing-20-24/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-24/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-24/hello.html b/listings/ch20-web-server/listing-20-24/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-24/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-24/src/bin/main.rs b/listings/ch20-web-server/listing-20-24/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-24/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/listing-20-24/src/lib.rs b/listings/ch20-web-server/listing-20-24/src/lib.rs
new file mode 100644
index 00000000..319452f6
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-24/src/lib.rs
@@ -0,0 +1,110 @@
+use std::thread;
+use std::sync::mpsc;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Message>,
+}
+
+type Job = Box<dyn FnOnce() + Send + 'static>;
+
+enum Message {
+    NewJob(Job),
+    Terminate,
+}
+
+impl ThreadPool {
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+        let job = Box::new(f);
+
+        self.sender.send(Message::NewJob(job)).unwrap();
+    }
+}
+
+// ANCHOR: here
+impl Drop for ThreadPool {
+    fn drop(&mut self) {
+        println!("Sending terminate message to all workers.");
+
+        for _ in &mut self.workers {
+            self.sender.send(Message::Terminate).unwrap();
+        }
+
+        println!("Shutting down all workers.");
+
+        for worker in &mut self.workers {
+            println!("Shutting down worker {}", worker.id);
+
+            if let Some(thread) = worker.thread.take() {
+                thread.join().unwrap();
+            }
+        }
+    }
+}
+// ANCHOR_END: here
+
+struct Worker {
+    id: usize,
+    thread: Option<thread::JoinHandle<()>>,
+}
+
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Message>>>) ->
+        Worker {
+
+        let thread = thread::spawn(move ||{
+            loop {
+                let message = receiver.lock().unwrap().recv().unwrap();
+
+                match message {
+                    Message::NewJob(job) => {
+                        println!("Worker {} got a job; executing.", id);
+
+                        job();
+                    },
+                    Message::Terminate => {
+                        println!("Worker {} was told to terminate.", id);
+
+                        break;
+                    },
+                }
+            }
+        });
+
+        Worker {
+            id,
+            thread: Some(thread),
+        }
+    }
+}
diff --git a/listings/ch20-web-server/listing-20-25/404.html b/listings/ch20-web-server/listing-20-25/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-25/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-25/Cargo.lock b/listings/ch20-web-server/listing-20-25/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-25/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/listing-20-25/Cargo.toml b/listings/ch20-web-server/listing-20-25/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-25/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/listing-20-25/hello.html b/listings/ch20-web-server/listing-20-25/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-25/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/listing-20-25/src/bin/main.rs b/listings/ch20-web-server/listing-20-25/src/bin/main.rs
new file mode 100644
index 00000000..1ea31705
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-25/src/bin/main.rs
@@ -0,0 +1,50 @@
+// ANCHOR: all
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+// ANCHOR: here
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming().take(2) {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+
+    println!("Shutting down.");
+}
+// ANCHOR_END: here
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
+// ANCHOR_END: all
diff --git a/listings/ch20-web-server/listing-20-25/src/lib.rs b/listings/ch20-web-server/listing-20-25/src/lib.rs
new file mode 100644
index 00000000..637d3ea6
--- /dev/null
+++ b/listings/ch20-web-server/listing-20-25/src/lib.rs
@@ -0,0 +1,112 @@
+// ANCHOR: here
+use std::thread;
+use std::sync::mpsc;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Message>,
+}
+
+type Job = Box<dyn FnOnce() + Send + 'static>;
+
+enum Message {
+    NewJob(Job),
+    Terminate,
+}
+
+impl ThreadPool {
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+        let job = Box::new(f);
+
+        self.sender.send(Message::NewJob(job)).unwrap();
+    }
+}
+
+impl Drop for ThreadPool {
+    fn drop(&mut self) {
+        println!("Sending terminate message to all workers.");
+
+        for _ in &mut self.workers {
+            self.sender.send(Message::Terminate).unwrap();
+        }
+
+        println!("Shutting down all workers.");
+
+        for worker in &mut self.workers {
+            println!("Shutting down worker {}", worker.id);
+
+            if let Some(thread) = worker.thread.take() {
+                thread.join().unwrap();
+            }
+        }
+    }
+}
+
+struct Worker {
+    id: usize,
+    thread: Option<thread::JoinHandle<()>>,
+}
+
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Message>>>) ->
+        Worker {
+
+        let thread = thread::spawn(move ||{
+            loop {
+                let message = receiver.lock().unwrap().recv().unwrap();
+
+                match message {
+                    Message::NewJob(job) => {
+                        println!("Worker {} got a job; executing.", id);
+
+                        job();
+                    },
+                    Message::Terminate => {
+                        println!("Worker {} was told to terminate.", id);
+
+                        break;
+                    },
+                }
+            }
+        });
+
+        Worker {
+            id,
+            thread: Some(thread),
+        }
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch20-web-server/no-listing-01-define-threadpool-struct/404.html b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-01-define-threadpool-struct/Cargo.lock b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/no-listing-01-define-threadpool-struct/Cargo.toml b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/no-listing-01-define-threadpool-struct/hello.html b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-01-define-threadpool-struct/output.txt b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/output.txt
new file mode 100644
index 00000000..61703b4b
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/output.txt
@@ -0,0 +1,14 @@
+$ cargo check
+    Checking hello v0.1.0 (file:///projects/hello)
+error[E0599]: no function or associated item named `new` found for type `hello::ThreadPool` in the current scope
+  --> src/bin/main.rs:11:28
+   |
+11 |     let pool = ThreadPool::new(4);
+   |                            ^^^ function or associated item not found in `hello::ThreadPool`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0599`.
+error: Could not compile `hello`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch20-web-server/no-listing-01-define-threadpool-struct/src/bin/main.rs b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/src/bin/main.rs
new file mode 100644
index 00000000..39e8c8fa
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/src/bin/main.rs
@@ -0,0 +1,46 @@
+// ANCHOR: here
+use hello::ThreadPool;
+// ANCHOR_END: here
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/no-listing-01-define-threadpool-struct/src/lib.rs b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/src/lib.rs
new file mode 100644
index 00000000..7312e293
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/src/lib.rs
@@ -0,0 +1 @@
+pub struct ThreadPool;
diff --git a/listings/ch20-web-server/no-listing-02-impl-threadpool-new/404.html b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-02-impl-threadpool-new/Cargo.lock b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/no-listing-02-impl-threadpool-new/Cargo.toml b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/no-listing-02-impl-threadpool-new/hello.html b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-02-impl-threadpool-new/output.txt b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/output.txt
new file mode 100644
index 00000000..44bc1fab
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/output.txt
@@ -0,0 +1,14 @@
+$ cargo check
+    Checking hello v0.1.0 (file:///projects/hello)
+error[E0599]: no method named `execute` found for type `hello::ThreadPool` in the current scope
+  --> src/bin/main.rs:16:14
+   |
+16 |         pool.execute(|| {
+   |              ^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0599`.
+error: Could not compile `hello`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch20-web-server/no-listing-02-impl-threadpool-new/src/bin/main.rs b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/no-listing-02-impl-threadpool-new/src/lib.rs b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/src/lib.rs
new file mode 100644
index 00000000..3ff5ad49
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/src/lib.rs
@@ -0,0 +1,11 @@
+// ANCHOR: here
+pub struct ThreadPool;
+
+impl ThreadPool {
+    pub fn new(size: usize) -> ThreadPool {
+        ThreadPool
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch20-web-server/no-listing-03-define-execute/404.html b/listings/ch20-web-server/no-listing-03-define-execute/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-03-define-execute/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-03-define-execute/Cargo.lock b/listings/ch20-web-server/no-listing-03-define-execute/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-03-define-execute/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/no-listing-03-define-execute/Cargo.toml b/listings/ch20-web-server/no-listing-03-define-execute/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-03-define-execute/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/no-listing-03-define-execute/hello.html b/listings/ch20-web-server/no-listing-03-define-execute/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-03-define-execute/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-03-define-execute/output.txt b/listings/ch20-web-server/no-listing-03-define-execute/output.txt
new file mode 100644
index 00000000..dc76c43d
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-03-define-execute/output.txt
@@ -0,0 +1,3 @@
+$ cargo check
+    Checking hello v0.1.0 (file:///projects/hello)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.24s
diff --git a/listings/ch20-web-server/no-listing-03-define-execute/src/bin/main.rs b/listings/ch20-web-server/no-listing-03-define-execute/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-03-define-execute/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/no-listing-03-define-execute/src/lib.rs b/listings/ch20-web-server/no-listing-03-define-execute/src/lib.rs
new file mode 100644
index 00000000..f3b4ef3f
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-03-define-execute/src/lib.rs
@@ -0,0 +1,21 @@
+pub struct ThreadPool;
+
+// ANCHOR: here
+impl ThreadPool {
+    // --snip--
+    // ANCHOR_END: here
+    pub fn new(size: usize) -> ThreadPool {
+        ThreadPool
+    }
+
+    // ANCHOR: here
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+
+    }
+}
+// ANCHOR_END: here
+
+fn main() {}
diff --git a/listings/ch20-web-server/no-listing-04-update-worker-definition/404.html b/listings/ch20-web-server/no-listing-04-update-worker-definition/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-04-update-worker-definition/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-04-update-worker-definition/Cargo.lock b/listings/ch20-web-server/no-listing-04-update-worker-definition/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-04-update-worker-definition/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/no-listing-04-update-worker-definition/Cargo.toml b/listings/ch20-web-server/no-listing-04-update-worker-definition/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-04-update-worker-definition/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/no-listing-04-update-worker-definition/hello.html b/listings/ch20-web-server/no-listing-04-update-worker-definition/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-04-update-worker-definition/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-04-update-worker-definition/output.txt b/listings/ch20-web-server/no-listing-04-update-worker-definition/output.txt
new file mode 100644
index 00000000..5fa1d5bf
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-04-update-worker-definition/output.txt
@@ -0,0 +1,27 @@
+$ cargo check
+    Checking hello v0.1.0 (file:///projects/hello)
+error[E0599]: no method named `join` found for type `std::option::Option<std::thread::JoinHandle<()>>` in the current scope
+  --> src/lib.rs:55:27
+   |
+55 |             worker.thread.join().unwrap();
+   |                           ^^^^
+
+error[E0308]: mismatched types
+  --> src/lib.rs:79:13
+   |
+79 |             thread,
+   |             ^^^^^^
+   |             |
+   |             expected enum `std::option::Option`, found struct `std::thread::JoinHandle`
+   |             help: try using a variant of the expected type: `Some(thread)`
+   |
+   = note: expected type `std::option::Option<std::thread::JoinHandle<()>>`
+              found type `std::thread::JoinHandle<_>`
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0308, E0599.
+For more information about an error, try `rustc --explain E0308`.
+error: Could not compile `hello`.
+
+To learn more, run the command again with --verbose.
diff --git a/listings/ch20-web-server/no-listing-04-update-worker-definition/src/bin/main.rs b/listings/ch20-web-server/no-listing-04-update-worker-definition/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-04-update-worker-definition/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/no-listing-04-update-worker-definition/src/lib.rs b/listings/ch20-web-server/no-listing-04-update-worker-definition/src/lib.rs
new file mode 100644
index 00000000..dd4d861a
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-04-update-worker-definition/src/lib.rs
@@ -0,0 +1,84 @@
+use std::thread;
+use std::sync::mpsc;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+type Job = Box<dyn FnOnce() + Send + 'static>;
+
+impl ThreadPool {
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+        let job = Box::new(f);
+
+        self.sender.send(job).unwrap();
+    }
+}
+
+impl Drop for ThreadPool {
+    fn drop(&mut self) {
+        for worker in &mut self.workers {
+            println!("Shutting down worker {}", worker.id);
+
+            worker.thread.join().unwrap();
+        }
+    }
+}
+
+// ANCHOR: here
+struct Worker {
+    id: usize,
+    thread: Option<thread::JoinHandle<()>>,
+}
+// ANCHOR_END: here
+
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
+        let thread = thread::spawn(move || {
+            loop {
+                let job = receiver.lock().unwrap().recv().unwrap();
+
+                println!("Worker {} got a job; executing.", id);
+
+                job();
+            }
+        });
+
+        Worker {
+            id,
+            thread,
+        }
+    }
+}
diff --git a/listings/ch20-web-server/no-listing-05-fix-worker-new/404.html b/listings/ch20-web-server/no-listing-05-fix-worker-new/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-05-fix-worker-new/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-05-fix-worker-new/Cargo.lock b/listings/ch20-web-server/no-listing-05-fix-worker-new/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-05-fix-worker-new/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/no-listing-05-fix-worker-new/Cargo.toml b/listings/ch20-web-server/no-listing-05-fix-worker-new/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-05-fix-worker-new/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/no-listing-05-fix-worker-new/hello.html b/listings/ch20-web-server/no-listing-05-fix-worker-new/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-05-fix-worker-new/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-05-fix-worker-new/src/bin/main.rs b/listings/ch20-web-server/no-listing-05-fix-worker-new/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-05-fix-worker-new/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/no-listing-05-fix-worker-new/src/lib.rs b/listings/ch20-web-server/no-listing-05-fix-worker-new/src/lib.rs
new file mode 100644
index 00000000..012fd0a6
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-05-fix-worker-new/src/lib.rs
@@ -0,0 +1,88 @@
+use std::thread;
+use std::sync::mpsc;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+type Job = Box<dyn FnOnce() + Send + 'static>;
+
+impl ThreadPool {
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+        let job = Box::new(f);
+
+        self.sender.send(job).unwrap();
+    }
+}
+
+impl Drop for ThreadPool {
+    fn drop(&mut self) {
+        for worker in &mut self.workers {
+            println!("Shutting down worker {}", worker.id);
+
+            worker.thread.join().unwrap();
+        }
+    }
+}
+
+struct Worker {
+    id: usize,
+    thread: Option<thread::JoinHandle<()>>,
+}
+
+// ANCHOR: here
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
+        // --snip--
+
+        // ANCHOR_END: here
+        let thread = thread::spawn(move || {
+            loop {
+                let job = receiver.lock().unwrap().recv().unwrap();
+
+                println!("Worker {} got a job; executing.", id);
+
+                job();
+            }
+        });
+
+        // ANCHOR: here
+        Worker {
+            id,
+            thread: Some(thread),
+        }
+    }
+}
+// ANCHOR_END: here
diff --git a/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/404.html b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/Cargo.lock b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/Cargo.toml b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/hello.html b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/src/bin/main.rs b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/src/lib.rs b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/src/lib.rs
new file mode 100644
index 00000000..5845a6fa
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-06-fix-threadpool-drop/src/lib.rs
@@ -0,0 +1,86 @@
+use std::thread;
+use std::sync::mpsc;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+type Job = Box<dyn FnOnce() + Send + 'static>;
+
+impl ThreadPool {
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+        let job = Box::new(f);
+
+        self.sender.send(job).unwrap();
+    }
+}
+
+// ANCHOR: here
+impl Drop for ThreadPool {
+    fn drop(&mut self) {
+        for worker in &mut self.workers {
+            println!("Shutting down worker {}", worker.id);
+
+            if let Some(thread) = worker.thread.take() {
+                thread.join().unwrap();
+            }
+        }
+    }
+}
+// ANCHOR_END: here
+
+struct Worker {
+    id: usize,
+    thread: Option<thread::JoinHandle<()>>,
+}
+
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
+        let thread = thread::spawn(move || {
+            loop {
+                let job = receiver.lock().unwrap().recv().unwrap();
+
+                println!("Worker {} got a job; executing.", id);
+
+                job();
+            }
+        });
+
+        Worker {
+            id,
+            thread: Some(thread),
+        }
+    }
+}
diff --git a/listings/ch20-web-server/no-listing-07-define-message-enum/404.html b/listings/ch20-web-server/no-listing-07-define-message-enum/404.html
new file mode 100644
index 00000000..88d8e915
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-07-define-message-enum/404.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Oops!</h1>
+    <p>Sorry, I don't know what you're asking for.</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-07-define-message-enum/Cargo.lock b/listings/ch20-web-server/no-listing-07-define-message-enum/Cargo.lock
new file mode 100644
index 00000000..15b9446d
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-07-define-message-enum/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "hello"
+version = "0.1.0"
+
diff --git a/listings/ch20-web-server/no-listing-07-define-message-enum/Cargo.toml b/listings/ch20-web-server/no-listing-07-define-message-enum/Cargo.toml
new file mode 100644
index 00000000..78dfe6eb
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-07-define-message-enum/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "hello"
+version = "0.1.0"
+authors = ["Your Name <you@example.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/listings/ch20-web-server/no-listing-07-define-message-enum/hello.html b/listings/ch20-web-server/no-listing-07-define-message-enum/hello.html
new file mode 100644
index 00000000..fe442d6b
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-07-define-message-enum/hello.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Hello!</title>
+  </head>
+  <body>
+    <h1>Hello!</h1>
+    <p>Hi from Rust</p>
+  </body>
+</html>
diff --git a/listings/ch20-web-server/no-listing-07-define-message-enum/src/bin/main.rs b/listings/ch20-web-server/no-listing-07-define-message-enum/src/bin/main.rs
new file mode 100644
index 00000000..f398eaed
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-07-define-message-enum/src/bin/main.rs
@@ -0,0 +1,44 @@
+use hello::ThreadPool;
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+use std::net::TcpListener;
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        pool.execute(|| {
+            handle_connection(stream);
+        });
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 512];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+    let sleep = b"GET /sleep HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else if buffer.starts_with(sleep) {
+        thread::sleep(Duration::from_secs(5));
+        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
+    };
+
+    let contents = fs::read_to_string(filename).unwrap();
+
+    let response = format!("{}{}", status_line, contents);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
diff --git a/listings/ch20-web-server/no-listing-07-define-message-enum/src/lib.rs b/listings/ch20-web-server/no-listing-07-define-message-enum/src/lib.rs
new file mode 100644
index 00000000..52c8b514
--- /dev/null
+++ b/listings/ch20-web-server/no-listing-07-define-message-enum/src/lib.rs
@@ -0,0 +1,93 @@
+use std::thread;
+use std::sync::mpsc;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+pub struct ThreadPool {
+    workers: Vec<Worker>,
+    sender: mpsc::Sender<Job>,
+}
+
+type Job = Box<dyn FnOnce() + Send + 'static>;
+
+// ANCHOR: here
+enum Message {
+    NewJob(Job),
+    Terminate,
+}
+// ANCHOR_END: here
+
+impl ThreadPool {
+    /// Create a new ThreadPool.
+    ///
+    /// The size is the number of threads in the pool.
+    ///
+    /// # Panics
+    ///
+    /// The `new` function will panic if the size is zero.
+    pub fn new(size: usize) -> ThreadPool {
+        assert!(size > 0);
+
+        let (sender, receiver) = mpsc::channel();
+
+        let receiver = Arc::new(Mutex::new(receiver));
+
+        let mut workers = Vec::with_capacity(size);
+
+        for id in 0..size {
+            workers.push(Worker::new(id, Arc::clone(&receiver)));
+        }
+
+        ThreadPool {
+            workers,
+            sender,
+        }
+    }
+
+    pub fn execute<F>(&self, f: F)
+        where
+            F: FnOnce() + Send + 'static
+    {
+        let job = Box::new(f);
+
+        self.sender.send(job).unwrap();
+    }
+}
+
+impl Drop for ThreadPool {
+    fn drop(&mut self) {
+        for worker in &mut self.workers {
+            println!("Shutting down worker {}", worker.id);
+
+            if let Some(thread) = worker.thread.take() {
+                thread.join().unwrap();
+            }
+        }
+    }
+}
+
+struct Worker {
+    id: usize,
+    thread: Option<thread::JoinHandle<()>>,
+}
+
+impl Worker {
+    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
+        let thread = thread::spawn(move || {
+            loop {
+                let job = receiver.lock().unwrap().recv().unwrap();
+
+                println!("Worker {} got a job; executing.", id);
+
+                job();
+            }
+        });
+
+        Worker {
+            id,
+            thread: Some(thread),
+        }
+    }
+}
+
+fn main() {}
diff --git a/src/ch02-00-guessing-game-tutorial.md b/src/ch02-00-guessing-game-tutorial.md
index 2ecc1520..55055ca1 100644
--- a/src/ch02-00-guessing-game-tutorial.md
+++ b/src/ch02-00-guessing-game-tutorial.md
@@ -31,13 +31,7 @@ Look at the generated *Cargo.toml* file:
 <span class="filename">Filename: Cargo.toml</span>
 
 ```toml
-[package]
-name = "guessing_game"
-version = "0.1.0"
-authors = ["Your Name <you@example.com>"]
-edition = "2018"
-
-[dependencies]
+{{#include ../listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/Cargo.toml}}
 ```
 
 If the author information that Cargo obtained from your environment is not
@@ -49,20 +43,14 @@ you. Check out the *src/main.rs* file:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    println!("Hello, world!");
-}
+{{#rustdoc_include ../listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/src/main.rs}}
 ```
 
 Now let’s compile this “Hello, world!” program and run it in the same step
 using the `cargo run` command:
 
 ```text
-$ cargo run
-   Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
-    Finished dev [unoptimized + debuginfo] target(s) in 1.50 secs
-     Running `target/debug/guessing_game`
-Hello, world!
+{{#include ../listings/ch02-guessing-game-tutorial/no-listing-01-cargo-new/output.txt}}
 ```
 
 The `run` command comes in handy when you need to rapidly iterate on a project,
@@ -81,20 +69,7 @@ allow the player to input a guess. Enter the code in Listing 2-1 into
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use std::io;
-
-fn main() {
-    println!("Guess the number!");
-
-    println!("Please input your guess.");
-
-    let mut guess = String::new();
-
-    io::stdin().read_line(&mut guess)
-        .expect("Failed to read line");
-
-    println!("You guessed: {}", guess);
-}
+{{#rustdoc_include ../listings/ch02-guessing-game-tutorial/listing-02-01/src/main.rs}}
 ```
 
 <span class="caption">Listing 2-1: Code that gets a guess from the user and
@@ -289,15 +264,7 @@ entered into standard input.
 If you don’t call `expect`, the program will compile, but you’ll get a warning:
 
 ```text
-$ cargo build
-   Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
-warning: unused `std::result::Result` which must be used
-  --> src/main.rs:10:5
-   |
-10 |     io::stdin().read_line(&mut guess);
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: #[warn(unused_must_use)] on by default
+{{#include ../listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/output.txt}}
 ```
 
 Rust warns that you haven’t used the `Result` value returned from `read_line`,
@@ -336,10 +303,16 @@ This code would print `x = 5 and y = 10`.
 
 Let’s test the first part of the guessing game. Run it using `cargo run`:
 
+<!-- manual-regeneration
+cd listings/ch02-guessing-game-tutorial/listing-02-01/
+cargo clean
+cargo run
+input 6 -->
+
 ```text
 $ cargo run
    Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
-    Finished dev [unoptimized + debuginfo] target(s) in 2.53 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 2.53s
      Running `target/debug/guessing_game`
 Guess the number!
 Please input your guess.
@@ -382,8 +355,7 @@ you:
 <span class="filename">Filename: Cargo.toml</span>
 
 ```toml
-[dependencies]
-rand = "0.5.5"
+{{#include ../listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.toml:9:}}
 ```
 
 In the *Cargo.toml* file, everything that follows a header is part of a section
@@ -401,6 +373,11 @@ version 0.5.5.”
 Now, without changing any of the code, let’s build the project, as shown in
 Listing 2-2.
 
+<!-- manual-regeneration
+cd listings/ch02-guessing-game-tutorial/listing-02-02/
+cargo clean
+cargo build -->
+
 ```text
 $ cargo build
     Updating crates.io index
@@ -415,7 +392,7 @@ $ cargo build
    Compiling rand_core v0.2.2
    Compiling rand v0.5.5
    Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
-    Finished dev [unoptimized + debuginfo] target(s) in 2.53 s
+    Finished dev [unoptimized + debuginfo] target(s) in 2.53s
 ```
 
 <span class="caption">Listing 2-2: The output from running `cargo build` after
@@ -433,9 +410,9 @@ their open source Rust projects for others to use.
 
 After updating the registry, Cargo checks the `[dependencies]` section and
 downloads any crates you don’t have yet. In this case, although we only listed
-`rand` as a dependency, Cargo also grabbed `libc` and `rand_core`, because `rand`
-depends on those to work. After downloading the crates, Rust compiles them and
-then compiles the project with the dependencies available.
+`rand` as a dependency, Cargo also grabbed `libc` and `rand_core`, because
+`rand` depends on those to work. After downloading the crates, Rust compiles
+them and then compiles the project with the dependencies available.
 
 If you immediately run `cargo build` again without making any changes, you
 won’t get any output aside from the `Finished` line. Cargo knows it has already
@@ -447,10 +424,15 @@ do, it simply exits.
 If you open up the *src/main.rs* file, make a trivial change, and then save it
 and build again, you’ll only see two lines of output:
 
+<!-- manual-regeneration
+cd listings/ch02-guessing-game-tutorial/listing-02-02/
+touch src/main.rs
+cargo build -->
+
 ```text
 $ cargo build
    Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
-    Finished dev [unoptimized + debuginfo] target(s) in 2.53s
+    Finished dev [unoptimized + debuginfo] target(s) in 2.53 secs
 ```
 
 These lines show Cargo only updates the build with your tiny change to the
@@ -489,6 +471,12 @@ But by default, Cargo will only look for versions greater than `0.5.5` and less
 than `0.6.0`. If the `rand` crate has released two new versions, `0.5.6` and
 `0.6.0`, you would see the following if you ran `cargo update`:
 
+<!-- manual-regeneration
+cd listings/ch02-guessing-game-tutorial/listing-02-02/
+cargo update
+assuming there is a new 0.5.x version of rand; otherwise use another update
+as a guide to creating the hypothetical output shown here -->
+
 ```text
 $ cargo update
     Updating crates.io index
@@ -527,25 +515,7 @@ Now that you’ve added the `rand` crate to *Cargo.toml*, let’s start using
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use std::io;
-use rand::Rng;
-
-fn main() {
-    println!("Guess the number!");
-
-    let secret_number = rand::thread_rng().gen_range(1, 101);
-
-    println!("The secret number is: {}", secret_number);
-
-    println!("Please input your guess.");
-
-    let mut guess = String::new();
-
-    io::stdin().read_line(&mut guess)
-        .expect("Failed to read line");
-
-    println!("You guessed: {}", guess);
-}
+{{#rustdoc_include ../listings/ch02-guessing-game-tutorial/listing-02-03/src/main.rs:all}}
 ```
 
 <span class="caption">Listing 2-3: Adding code to generate a random
@@ -580,17 +550,27 @@ program prints the answer as soon as it starts!
 
 Try running the program a few times:
 
+<!-- manual-regeneration
+cd listings/ch02-guessing-game-tutorial/listing-02-03/
+cargo run
+4
+cargo run
+5
+-->
+
 ```text
 $ cargo run
    Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
-    Finished dev [unoptimized + debuginfo] target(s) in 2.53 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 2.53s
      Running `target/debug/guessing_game`
 Guess the number!
 The secret number is: 7
 Please input your guess.
 4
 You guessed: 4
+
 $ cargo run
+    Finished dev [unoptimized + debuginfo] target(s) in 0.02s
      Running `target/debug/guessing_game`
 Guess the number!
 The secret number is: 83
@@ -611,22 +591,7 @@ will explain.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-use std::io;
-use std::cmp::Ordering;
-use rand::Rng;
-
-fn main() {
-
-    // ---snip---
-
-    println!("You guessed: {}", guess);
-
-    match guess.cmp(&secret_number) {
-        Ordering::Less => println!("Too small!"),
-        Ordering::Greater => println!("Too big!"),
-        Ordering::Equal => println!("You win!"),
-    }
-}
+{{#rustdoc_include ../listings/ch02-guessing-game-tutorial/listing-02-04/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 2-4: Handling the possible return values of
@@ -672,19 +637,7 @@ expression ends because it has no need to look at the last arm in this scenario.
 However, the code in Listing 2-4 won’t compile yet. Let’s try it:
 
 ```text
-$ cargo build
-   Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
-error[E0308]: mismatched types
-  --> src/main.rs:23:21
-   |
-23 |     match guess.cmp(&secret_number) {
-   |                     ^^^^^^^^^^^^^^ expected struct `std::string::String`, found integer
-   |
-   = note: expected type `&std::string::String`
-   = note:    found type `&{integer}`
-
-error: aborting due to previous error
-Could not compile `guessing_game`.
+{{#include ../listings/ch02-guessing-game-tutorial/listing-02-04/output.txt}}
 ```
 
 The core of the error states that there are *mismatched types*. Rust has a
@@ -705,24 +658,7 @@ do that by adding the following two lines to the `main` function body:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-// --snip--
-
-    let mut guess = String::new();
-
-    io::stdin().read_line(&mut guess)
-        .expect("Failed to read line");
-
-    let guess: u32 = guess.trim().parse()
-        .expect("Please type a number!");
-
-    println!("You guessed: {}", guess);
-
-    match guess.cmp(&secret_number) {
-        Ordering::Less => println!("Too small!"),
-        Ordering::Greater => println!("Too big!"),
-        Ordering::Equal => println!("You win!"),
-    }
-}
+{{#rustdoc_include ../listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/src/main.rs:here}}
 ```
 
 The two new lines are:
@@ -779,10 +715,16 @@ number that we want from the `Ok` value.
 
 Let’s run the program now!
 
+<!-- manual-regeneration
+cd listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/
+cargo run
+  76
+-->
+
 ```text
 $ cargo run
    Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.43 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 0.43s
      Running `target/debug/guessing_game`
 Guess the number!
 The secret number is: 58
@@ -808,22 +750,7 @@ more chances at guessing the number:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-// --snip--
-
-    println!("The secret number is: {}", secret_number);
-
-    loop {
-        println!("Please input your guess.");
-
-        // --snip--
-
-        match guess.cmp(&secret_number) {
-            Ordering::Less => println!("Too small!"),
-            Ordering::Greater => println!("Too big!"),
-            Ordering::Equal => println!("You win!"),
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch02-guessing-game-tutorial/no-listing-04-looping/src/main.rs:here}}
 ```
 
 As you can see, we’ve moved everything into a loop from the guess input prompt
@@ -839,10 +766,19 @@ Guess to the Secret Number”](#comparing-the-guess-to-the-secret-number)<!--
 ignore -->: if the user enters a non-number answer, the program will crash. The
 user can take advantage of that in order to quit, as shown here:
 
+<!-- manual-regeneration
+cd listings/ch02-guessing-game-tutorial/no-listing-04-looping/
+cargo run
+(too small guess)
+(too big guess)
+(correct guess)
+quit
+-->
+
 ```text
 $ cargo run
    Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
-    Finished dev [unoptimized + debuginfo] target(s) in 1.50 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 1.50s
      Running `target/debug/guessing_game`
 Guess the number!
 The secret number is: 59
@@ -860,9 +796,8 @@ You guessed: 59
 You win!
 Please input your guess.
 quit
-thread 'main' panicked at 'Please type a number!: ParseIntError { kind: InvalidDigit }', src/libcore/result.rs:785
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
-error: Process didn't exit successfully: `target/debug/guess` (exit code: 101)
+thread 'main' panicked at 'Please type a number!: ParseIntError { kind: InvalidDigit }', src/libcore/result.rs:999:5
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
 ```
 
 Typing `quit` actually quits the game, but so will any other non-number input.
@@ -876,18 +811,7 @@ Let’s program the game to quit when the user wins by adding a `break` statemen
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-// --snip--
-
-        match guess.cmp(&secret_number) {
-            Ordering::Less => println!("Too small!"),
-            Ordering::Greater => println!("Too big!"),
-            Ordering::Equal => {
-                println!("You win!");
-                break;
-            }
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch02-guessing-game-tutorial/no-listing-05-quitting/src/main.rs:here}}
 ```
 
 Adding the `break` line after `You win!` makes the program exit the loop when
@@ -904,19 +828,7 @@ is converted from a `String` to a `u32`, as shown in Listing 2-5.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-// --snip--
-
-io::stdin().read_line(&mut guess)
-    .expect("Failed to read line");
-
-let guess: u32 = match guess.trim().parse() {
-    Ok(num) => num,
-    Err(_) => continue,
-};
-
-println!("You guessed: {}", guess);
-
-// --snip--
+{{#rustdoc_include ../listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 2-5: Ignoring a non-number guess and asking for
@@ -946,6 +858,15 @@ program ignores all errors that `parse` might encounter!
 
 Now everything in the program should work as expected. Let’s try it:
 
+<!-- manual-regeneration
+cd listings/ch02-guessing-game-tutorial/listing-02-05/
+cargo run
+(too small guess)
+(too big guess)
+foo
+(correct guess)
+-->
+
 ```text
 $ cargo run
    Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
@@ -976,40 +897,7 @@ secret number. Listing 2-6 shows the final code.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use std::io;
-use std::cmp::Ordering;
-use rand::Rng;
-
-fn main() {
-    println!("Guess the number!");
-
-    let secret_number = rand::thread_rng().gen_range(1, 101);
-
-    loop {
-        println!("Please input your guess.");
-
-        let mut guess = String::new();
-
-        io::stdin().read_line(&mut guess)
-            .expect("Failed to read line");
-
-        let guess: u32 = match guess.trim().parse() {
-            Ok(num) => num,
-            Err(_) => continue,
-        };
-
-        println!("You guessed: {}", guess);
-
-        match guess.cmp(&secret_number) {
-            Ordering::Less => println!("Too small!"),
-            Ordering::Greater => println!("Too big!"),
-            Ordering::Equal => {
-                println!("You win!");
-                break;
-            }
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch02-guessing-game-tutorial/listing-02-06/src/main.rs}}
 ```
 
 <span class="caption">Listing 2-6: Complete guessing game code</span>
diff --git a/src/ch03-01-variables-and-mutability.md b/src/ch03-01-variables-and-mutability.md
index d6a73a09..05fea9aa 100644
--- a/src/ch03-01-variables-and-mutability.md
+++ b/src/ch03-01-variables-and-mutability.md
@@ -17,26 +17,14 @@ code with the following code that won’t compile just yet:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let x = 5;
-    println!("The value of x is: {}", x);
-    x = 6;
-    println!("The value of x is: {}", x);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/src/main.rs}}
 ```
 
 Save and run the program using `cargo run`. You should receive an error
 message, as shown in this output:
 
 ```text
-error[E0384]: cannot assign twice to immutable variable `x`
- --> src/main.rs:4:5
-  |
-2 |     let x = 5;
-  |         - first assignment to `x`
-3 |     println!("The value of x is: {}", x);
-4 |     x = 6;
-  |     ^^^^^ cannot assign twice to immutable variable
+{{#include ../listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/output.txt}}
 ```
 
 This example shows how the compiler helps you find errors in your programs.
@@ -72,23 +60,13 @@ For example, let’s change *src/main.rs* to the following:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let mut x = 5;
-    println!("The value of x is: {}", x);
-    x = 6;
-    println!("The value of x is: {}", x);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-02-adding-mut/src/main.rs}}
 ```
 
 When we run the program now, we get this:
 
 ```text
-$ cargo run
-   Compiling variables v0.1.0 (file:///projects/variables)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.30 secs
-     Running `target/debug/variables`
-The value of x is: 5
-The value of x is: 6
+{{#include ../listings/ch03-common-programming-concepts/no-listing-02-adding-mut/output.txt}}
 ```
 
 We’re allowed to change the value that `x` binds to from `5` to `6` when `mut`
@@ -160,15 +138,7 @@ of the `let` keyword as follows:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let x = 5;
-
-    let x = x + 1;
-
-    let x = x * 2;
-
-    println!("The value of x is: {}", x);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-03-shadowing/src/main.rs}}
 ```
 
 This program first binds `x` to a value of `5`. Then it shadows `x` by
@@ -178,11 +148,7 @@ previous value by `2` to give `x` a final value of `12`. When we run this
 program, it will output the following:
 
 ```text
-$ cargo run
-   Compiling variables v0.1.0 (file:///projects/variables)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.31 secs
-     Running `target/debug/variables`
-The value of x is: 12
+{{#include ../listings/ch03-common-programming-concepts/no-listing-03-shadowing/output.txt}}
 ```
 
 Shadowing is different from marking a variable as `mut`, because we’ll get a
@@ -198,8 +164,7 @@ program asks a user to show how many spaces they want between some text by
 inputting space characters, but we really want to store that input as a number:
 
 ```rust
-let spaces = "   ";
-let spaces = spaces.len();
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-04-shadowing-can-change-types/src/main.rs:here}}
 ```
 
 This construct is allowed because the first `spaces` variable is a string type
@@ -210,21 +175,13 @@ from having to come up with different names, such as `spaces_str` and
 try to use `mut` for this, as shown here, we’ll get a compile-time error:
 
 ```rust,ignore,does_not_compile
-let mut spaces = "   ";
-spaces = spaces.len();
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/src/main.rs:here}}
 ```
 
 The error says we’re not allowed to mutate a variable’s type:
 
 ```text
-error[E0308]: mismatched types
- --> src/main.rs:3:14
-  |
-3 |     spaces = spaces.len();
-  |              ^^^^^^^^^^^^ expected &str, found usize
-  |
-  = note: expected type `&str`
-             found type `usize`
+{{#include ../listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/output.txt}}
 ```
 
 Now that we’ve explored how variables work, let’s look at more data types they
diff --git a/src/ch03-02-data-types.md b/src/ch03-02-data-types.md
index 482e69f7..5c8b162b 100644
--- a/src/ch03-02-data-types.md
+++ b/src/ch03-02-data-types.md
@@ -21,14 +21,7 @@ error, which means the compiler needs more information from us to know which
 type we want to use:
 
 ```text
-error[E0282]: type annotations needed
- --> src/main.rs:2:9
-  |
-2 |     let guess = "42".parse().expect("Not a number!");
-  |         ^^^^^
-  |         |
-  |         cannot infer type for `_`
-  |         consider giving `guess` a type
+{{#include ../listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/output.txt}}
 ```
 
 You’ll see different type annotations for other data types.
@@ -133,11 +126,7 @@ Here’s an example that shows floating-point numbers in action:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let x = 2.0; // f64
-
-    let y: f32 = 3.0; // f32
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-06-floating-point/src/main.rs}}
 ```
 
 Floating-point numbers are represented according to the IEEE-754 standard. The
@@ -152,22 +141,7 @@ The following code shows how you’d use each one in a `let` statement:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    // addition
-    let sum = 5 + 10;
-
-    // subtraction
-    let difference = 95.5 - 4.3;
-
-    // multiplication
-    let product = 4 * 30;
-
-    // division
-    let quotient = 56.7 / 32.2;
-
-    // remainder
-    let remainder = 43 % 5;
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-07-numeric-operations/src/main.rs}}
 ```
 
 Each expression in these statements uses a mathematical operator and evaluates
@@ -183,11 +157,7 @@ Rust is specified using `bool`. For example:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let t = true;
-
-    let f: bool = false; // with explicit type annotation
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-08-boolean/src/main.rs}}
 ```
 
 The main way to use Boolean values is through conditionals, such as an `if`
@@ -204,11 +174,7 @@ single quotes, as opposed to string literals, which use double quotes.)
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let c = 'z';
-    let z = 'ℤ';
-    let heart_eyed_cat = '😻';
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-09-char/src/main.rs}}
 ```
 
 Rust’s `char` type is four bytes in size and represents a Unicode Scalar Value,
@@ -240,9 +206,7 @@ type annotations in this example:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let tup: (i32, f64, u8) = (500, 6.4, 1);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-10-tuples/src/main.rs}}
 ```
 
 The variable `tup` binds to the entire tuple, because a tuple is considered a
@@ -252,13 +216,7 @@ use pattern matching to destructure a tuple value, like this:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let tup = (500, 6.4, 1);
-
-    let (x, y, z) = tup;
-
-    println!("The value of y is: {}", y);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-11-destructuring-tuples/src/main.rs}}
 ```
 
 This program first creates a tuple and binds it to the variable `tup`. It then
@@ -274,15 +232,7 @@ want to access. For example:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let x: (i32, f64, u8) = (500, 6.4, 1);
-
-    let five_hundred = x.0;
-
-    let six_point_four = x.1;
-
-    let one = x.2;
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-12-tuple-indexing/src/main.rs}}
 ```
 
 This program creates a tuple, `x`, and then makes new variables for each
@@ -302,9 +252,7 @@ inside square brackets:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let a = [1, 2, 3, 4, 5];
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-13-arrays/src/main.rs}}
 ```
 
 Arrays are useful when you want your data allocated on the stack rather than
@@ -357,12 +305,7 @@ elements of an array using indexing, like this:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let a = [1, 2, 3, 4, 5];
-
-    let first = a[0];
-    let second = a[1];
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-14-array-indexing/src/main.rs}}
 ```
 
 In this example, the variable named `first` will get the value `1`, because
@@ -378,26 +321,13 @@ compile but exit with an error when it runs:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,panics
-fn main() {
-    let a = [1, 2, 3, 4, 5];
-    let index = 10;
-
-    let element = a[index];
-
-    println!("The value of element is: {}", element);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/src/main.rs}}
 ```
 
 Running this code using `cargo run` produces the following result:
 
 ```text
-$ cargo run
-   Compiling arrays v0.1.0 (file:///projects/arrays)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.31 secs
-     Running `target/debug/arrays`
-thread 'main' panicked at 'index out of bounds: the len is 5 but the index is
- 10', src/main.rs:5:19
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
+{{#include ../listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/output.txt}}
 ```
 
 The compilation didn’t produce any errors, but the program resulted in a
diff --git a/src/ch03-03-how-functions-work.md b/src/ch03-03-how-functions-work.md
index 95007579..491a69b8 100644
--- a/src/ch03-03-how-functions-work.md
+++ b/src/ch03-03-how-functions-work.md
@@ -12,15 +12,7 @@ Here’s a program that contains an example function definition:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    println!("Hello, world!");
-
-    another_function();
-}
-
-fn another_function() {
-    println!("Another function.");
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-16-functions/src/main.rs}}
 ```
 
 Function definitions in Rust start with `fn` and have a set of parentheses
@@ -39,12 +31,7 @@ further. Place the `another_function` example in *src/main.rs* and run it. You
 should see the following output:
 
 ```text
-$ cargo run
-   Compiling functions v0.1.0 (file:///projects/functions)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.28 secs
-     Running `target/debug/functions`
-Hello, world!
-Another function.
+{{#include ../listings/ch03-common-programming-concepts/no-listing-16-functions/output.txt}}
 ```
 
 The lines execute in the order in which they appear in the `main` function.
@@ -67,23 +54,13 @@ look like in Rust:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    another_function(5);
-}
-
-fn another_function(x: i32) {
-    println!("The value of x is: {}", x);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/src/main.rs}}
 ```
 
 Try running this program; you should get the following output:
 
 ```text
-$ cargo run
-   Compiling functions v0.1.0 (file:///projects/functions)
-    Finished dev [unoptimized + debuginfo] target(s) in 1.21 secs
-     Running `target/debug/functions`
-The value of x is: 5
+{{#include ../listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/output.txt}}
 ```
 
 The declaration of `another_function` has one parameter named `x`. The type of
@@ -102,14 +79,7 @@ declarations with commas, like this:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    another_function(5, 6);
-}
-
-fn another_function(x: i32, y: i32) {
-    println!("The value of x is: {}", x);
-    println!("The value of y is: {}", y);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/src/main.rs}}
 ```
 
 This example creates a function with two parameters, both of which are `i32`
@@ -122,12 +92,7 @@ project’s *src/main.rs* file with the preceding example and run it using `carg
 run`:
 
 ```text
-$ cargo run
-   Compiling functions v0.1.0 (file:///projects/functions)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.31 secs
-     Running `target/debug/functions`
-The value of x is: 5
-The value of y is: 6
+{{#include ../listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/output.txt}}
 ```
 
 Because we called the function with `5` as the value for  `x` and `6` is passed
@@ -153,9 +118,7 @@ statement. In Listing 3-1, `let y = 6;` is a statement.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let y = 6;
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/listing-03-01/src/main.rs}}
 ```
 
 <span class="caption">Listing 3-1: A `main` function declaration containing one statement</span>
@@ -169,13 +132,14 @@ to another variable, as the following code tries to do; you’ll get an error:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let x = (let y = 6);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/src/main.rs}}
 ```
 
 When you run this program, the error you’ll get looks like this:
 
+<!--TODO: not extracting this because the new error message is incorrect; see
+https://github.com/rust-lang/rust/issues/65254 -->
+
 ```text
 $ cargo run
    Compiling functions v0.1.0 (file:///projects/functions)
@@ -205,16 +169,7 @@ new scopes, `{}`, is an expression, for example:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let x = 5;
-
-    let y = {
-        let x = 3;
-        x + 1
-    };
-
-    println!("The value of y is: {}", y);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-20-blocks-are-expressions/src/main.rs}}
 ```
 
 This expression:
@@ -246,15 +201,7 @@ value:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn five() -> i32 {
-    5
-}
-
-fn main() {
-    let x = five();
-
-    println!("The value of x is: {}", x);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-21-function-return-values/src/main.rs}}
 ```
 
 There are no function calls, macros, or even `let` statements in the `five`
@@ -263,11 +210,7 @@ Rust. Note that the function’s return type is specified too, as `-> i32`. Try
 running this code; the output should look like this:
 
 ```text
-$ cargo run
-   Compiling functions v0.1.0 (file:///projects/functions)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.30 secs
-     Running `target/debug/functions`
-The value of x is: 5
+{{#include ../listings/ch03-common-programming-concepts/no-listing-21-function-return-values/output.txt}}
 ```
 
 The `5` in `five` is the function’s return value, which is why the return type
@@ -289,15 +232,7 @@ Let’s look at another example:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let x = plus_one(5);
-
-    println!("The value of x is: {}", x);
-}
-
-fn plus_one(x: i32) -> i32 {
-    x + 1
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-22-function-parameter-and-return/src/main.rs}}
 ```
 
 Running this code will print `The value of x is: 6`. But if we place a
@@ -307,32 +242,13 @@ expression to a statement, we’ll get an error.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let x = plus_one(5);
-
-    println!("The value of x is: {}", x);
-}
-
-fn plus_one(x: i32) -> i32 {
-    x + 1;
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/src/main.rs}}
 ```
 
 Compiling this code produces an error, as follows:
 
 ```text
-error[E0308]: mismatched types
- --> src/main.rs:7:28
-  |
-7 |   fn plus_one(x: i32) -> i32 {
-  |  ____________________________^
-8 | |     x + 1;
-  | |          - help: consider removing this semicolon
-9 | | }
-  | |_^ expected i32, found ()
-  |
-  = note: expected type `i32`
-             found type `()`
+{{#include ../listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/output.txt}}
 ```
 
 The main error message, “mismatched types,” reveals the core issue with this
diff --git a/src/ch03-04-comments.md b/src/ch03-04-comments.md
index d42e38c2..fb982be9 100644
--- a/src/ch03-04-comments.md
+++ b/src/ch03-04-comments.md
@@ -26,9 +26,7 @@ Comments can also be placed at the end of lines containing code:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let lucky_number = 7; // I’m feeling lucky today
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-24-comments-end-of-line/src/main.rs}}
 ```
 
 But you’ll more often see them used in this format, with the comment on a
@@ -37,10 +35,7 @@ separate line above the code it’s annotating:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    // I’m feeling lucky today
-    let lucky_number = 7;
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-25-comments-above-line/src/main.rs}}
 ```
 
 Rust also has another kind of comment, documentation comments, which we’ll
diff --git a/src/ch03-05-control-flow.md b/src/ch03-05-control-flow.md
index ac529d92..b37e65fa 100644
--- a/src/ch03-05-control-flow.md
+++ b/src/ch03-05-control-flow.md
@@ -18,15 +18,7 @@ the `if` expression. In the *src/main.rs* file, input the following:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let number = 3;
-
-    if number < 5 {
-        println!("condition was true");
-    } else {
-        println!("condition was false");
-    }
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-26-if-true/src/main.rs}}
 ```
 
 All `if` expressions start with the keyword `if`, which is followed by a
@@ -48,28 +40,20 @@ to the next bit of code.
 Try running this code; you should see the following output:
 
 ```text
-$ cargo run
-   Compiling branches v0.1.0 (file:///projects/branches)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.31 secs
-     Running `target/debug/branches`
-condition was true
+{{#include ../listings/ch03-common-programming-concepts/no-listing-26-if-true/output.txt}}
 ```
 
 Let’s try changing the value of `number` to a value that makes the condition
 `false` to see what happens:
 
 ```rust,ignore
-let number = 7;
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-27-if-false/src/main.rs:here}}
 ```
 
 Run the program again, and look at the output:
 
 ```text
-$ cargo run
-   Compiling branches v0.1.0 (file:///projects/branches)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.31 secs
-     Running `target/debug/branches`
-condition was false
+{{#include ../listings/ch03-common-programming-concepts/no-listing-27-if-false/output.txt}}
 ```
 
 It’s also worth noting that the condition in this code *must* be a `bool`. If
@@ -79,27 +63,14 @@ following code:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let number = 3;
-
-    if number {
-        println!("number was three");
-    }
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/src/main.rs}}
 ```
 
 The `if` condition evaluates to a value of `3` this time, and Rust throws an
 error:
 
 ```text
-error[E0308]: mismatched types
- --> src/main.rs:4:8
-  |
-4 |     if number {
-  |        ^^^^^^ expected bool, found integer
-  |
-  = note: expected type `bool`
-             found type `{integer}`
+{{#include ../listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/output.txt}}
 ```
 
 The error indicates that Rust expected a `bool` but got an integer. Unlike
@@ -112,13 +83,7 @@ expression to the following:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let number = 3;
-
-    if number != 0 {
-        println!("number was something other than zero");
-    }
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-29-if-not-equal-0/src/main.rs}}
 ```
 
 Running this code will print `number was something other than zero`.
@@ -131,30 +96,14 @@ expression. For example:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let number = 6;
-
-    if number % 4 == 0 {
-        println!("number is divisible by 4");
-    } else if number % 3 == 0 {
-        println!("number is divisible by 3");
-    } else if number % 2 == 0 {
-        println!("number is divisible by 2");
-    } else {
-        println!("number is not divisible by 4, 3, or 2");
-    }
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-30-else-if/src/main.rs}}
 ```
 
 This program has four possible paths it can take. After running it, you should
 see the following output:
 
 ```text
-$ cargo run
-   Compiling branches v0.1.0 (file:///projects/branches)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.31 secs
-     Running `target/debug/branches`
-number is divisible by 3
+{{#include ../listings/ch03-common-programming-concepts/no-listing-30-else-if/output.txt}}
 ```
 
 When this program executes, it checks each `if` expression in turn and executes
@@ -176,16 +125,7 @@ statement, as in Listing 3-2.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let condition = true;
-    let number = if condition {
-        5
-    } else {
-        6
-    };
-
-    println!("The value of number is: {}", number);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/listing-03-02/src/main.rs}}
 ```
 
 <span class="caption">Listing 3-2: Assigning the result of an `if` expression
@@ -195,11 +135,7 @@ The `number` variable will be bound to a value based on the outcome of the `if`
 expression. Run this code to see what happens:
 
 ```text
-$ cargo run
-   Compiling branches v0.1.0 (file:///projects/branches)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.30 secs
-     Running `target/debug/branches`
-The value of number is: 5
+{{#include ../listings/ch03-common-programming-concepts/listing-03-02/output.txt}}
 ```
 
 Remember that blocks of code evaluate to the last expression in them, and
@@ -213,17 +149,7 @@ example, we’ll get an error:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let condition = true;
-
-    let number = if condition {
-        5
-    } else {
-        "six"
-    };
-
-    println!("The value of number is: {}", number);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/src/main.rs}}
 ```
 
 When we try to compile this code, we’ll get an error. The `if` and `else` arms
@@ -231,19 +157,7 @@ have value types that are incompatible, and Rust indicates exactly where to
 find the problem in the program:
 
 ```text
-error[E0308]: if and else have incompatible types
- --> src/main.rs:4:18
-  |
-4 |       let number = if condition {
-  |  __________________^
-5 | |         5
-6 | |     } else {
-7 | |         "six"
-8 | |     };
-  | |_____^ expected integer, found &str
-  |
-  = note: expected type `{integer}`
-             found type `&str`
+{{#include ../listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/output.txt}}
 ```
 
 The expression in the `if` block evaluates to an integer, and the expression in
@@ -275,11 +189,7 @@ like this:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-fn main() {
-    loop {
-        println!("again!");
-    }
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-32-loop/src/main.rs}}
 ```
 
 When we run this program, we’ll see `again!` printed over and over continuously
@@ -287,10 +197,16 @@ until we stop the program manually. Most terminals support a keyboard shortcut,
 <span class="keystroke">ctrl-c</span>, to interrupt a program that is stuck in
 a continual loop. Give it a try:
 
+<!-- manual-regeneration
+cd listings/ch03-common-programming-concepts/no-listing-32-loop
+cargo run
+CTRL-C
+-->
+
 ```text
 $ cargo run
    Compiling loops v0.1.0 (file:///projects/loops)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.29 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 0.29s
      Running `target/debug/loops`
 again!
 again!
@@ -321,19 +237,7 @@ the loop; that value will be returned out of the loop so you can use it, as
 shown here:
 
 ```rust
-fn main() {
-    let mut counter = 0;
-
-    let result = loop {
-        counter += 1;
-
-        if counter == 10 {
-            break counter * 2;
-        }
-    };
-
-    println!("The result is {}", result);
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-33-return-value-from-loop/src/main.rs}}
 ```
 
 Before the loop, we declare a variable named `counter` and initialize it to
@@ -360,17 +264,7 @@ another message and exits.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let mut number = 3;
-
-    while number != 0 {
-        println!("{}!", number);
-
-        number -= 1;
-    }
-
-    println!("LIFTOFF!!!");
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/listing-03-03/src/main.rs}}
 ```
 
 <span class="caption">Listing 3-3: Using a `while` loop to run code while a
@@ -388,16 +282,7 @@ such as an array. For example, let’s look at Listing 3-4.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let a = [10, 20, 30, 40, 50];
-    let mut index = 0;
-
-    while index < 5 {
-        println!("the value is: {}", a[index]);
-
-        index += 1;
-    }
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/listing-03-04/src/main.rs}}
 ```
 
 <span class="caption">Listing 3-4: Looping through each element of a collection
@@ -409,15 +294,7 @@ when `index < 5` is no longer true). Running this code will print every element
 in the array:
 
 ```text
-$ cargo run
-   Compiling loops v0.1.0 (file:///projects/loops)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.32 secs
-     Running `target/debug/loops`
-the value is: 10
-the value is: 20
-the value is: 30
-the value is: 40
-the value is: 50
+{{#include ../listings/ch03-common-programming-concepts/listing-03-04/output.txt}}
 ```
 
 All five array values appear in the terminal, as expected. Even though `index`
@@ -435,13 +312,7 @@ for each item in a collection. A `for` loop looks like the code in Listing 3-5.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let a = [10, 20, 30, 40, 50];
-
-    for element in a.iter() {
-        println!("the value is: {}", element);
-    }
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/listing-03-05/src/main.rs}}
 ```
 
 <span class="caption">Listing 3-5: Looping through each element of a collection
@@ -471,12 +342,7 @@ we’ve not yet talked about, `rev`, to reverse the range:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    for number in (1..4).rev() {
-        println!("{}!", number);
-    }
-    println!("LIFTOFF!!!");
-}
+{{#rustdoc_include ../listings/ch03-common-programming-concepts/no-listing-34-for-range/src/main.rs}}
 ```
 
 This code is a bit nicer, isn’t it?
diff --git a/src/ch04-01-what-is-ownership.md b/src/ch04-01-what-is-ownership.md
index cf8fd209..00183008 100644
--- a/src/ch04-01-what-is-ownership.md
+++ b/src/ch04-01-what-is-ownership.md
@@ -30,14 +30,14 @@ strings.
 > be described in relation to the stack and the heap later in this chapter, so
 > here is a brief explanation in preparation.
 >
-> Both the stack and the heap are parts of memory that are available to your code
-> to use at runtime, but they are structured in different ways. The stack stores
-> values in the order it gets them and removes the values in the opposite order.
-> This is referred to as *last in, first out*. Think of a stack of plates: when
-> you add more plates, you put them on top of the pile, and when you need a
-> plate, you take one off the top. Adding or removing plates from the middle or
-> bottom wouldn’t work as well! Adding data is called *pushing onto the stack*,
-> and removing data is called *popping off the stack*.
+> Both the stack and the heap are parts of memory that are available to your
+> code to use at runtime, but they are structured in different ways. The stack
+> stores values in the order it gets them and removes the values in the
+> opposite order. This is referred to as *last in, first out*. Think of a stack
+> of plates: when you add more plates, you put them on top of the pile, and
+> when you need a plate, you take one off the top. Adding or removing plates
+> from the middle or bottom wouldn’t work as well! Adding data is called
+> *pushing onto the stack*, and removing data is called *popping off the stack*.
 >
 > All data stored on the stack must have a known, fixed size. Data with an
 > unknown size at compile time or a size that might change must be stored on
@@ -117,11 +117,7 @@ which it’s declared until the end of the current *scope*. Listing 4-1 has
 comments annotating where the variable `s` is valid.
 
 ```rust
-{                      // s is not valid here, it’s not yet declared
-    let s = "hello";   // s is valid from this point forward
-
-    // do stuff with s
-}                      // this scope is now over, and s is no longer valid
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-01/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 4-1: A variable and the scope in which it is
@@ -147,7 +143,7 @@ data.
 
 We’ll use `String` as the example here and concentrate on the parts of `String`
 that relate to ownership. These aspects also apply to other complex data types,
-whether they are provided by the standard library or created by you. We’ll 
+whether they are provided by the standard library or created by you. We’ll
 discuss `String` in more depth in Chapter 8.
 
 We’ve already seen string literals, where a string value is hardcoded into our
@@ -174,11 +170,7 @@ Module Tree”][paths-module-tree]<!-- ignore --> in Chapter 7.
 This kind of string *can* be mutated:
 
 ```rust
-let mut s = String::from("hello");
-
-s.push_str(", world!"); // push_str() appends a literal to a String
-
-println!("{}", s); // This will print `hello, world!`
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/src/main.rs:here}}
 ```
 
 So, what’s the difference here? Why can `String` be mutated but literals
@@ -219,12 +211,7 @@ variable that owns it goes out of scope. Here’s a version of our scope example
 from Listing 4-1 using a `String` instead of a string literal:
 
 ```rust
-{
-    let s = String::from("hello"); // s is valid from this point forward
-
-    // do stuff with s
-}                                  // this scope is now over, and s is no
-                                   // longer valid
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-02-string-scope/src/main.rs:here}}
 ```
 
 There is a natural point at which we can return the memory our `String` needs
@@ -249,8 +236,7 @@ Multiple variables can interact with the same data in different ways in Rust.
 Let’s look at an example using an integer in Listing 4-2.
 
 ```rust
-let x = 5;
-let y = x;
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-02/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 4-2: Assigning the integer value of variable `x`
@@ -265,8 +251,7 @@ onto the stack.
 Now let’s look at the `String` version:
 
 ```rust
-let s1 = String::from("hello");
-let s2 = s1;
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-03-string-move/src/main.rs:here}}
 ```
 
 This looks very similar to the previous code, so we might assume that the way
@@ -325,27 +310,14 @@ anything when `s1` goes out of scope. Check out what happens when you try to
 use `s1` after `s2` is created; it won’t work:
 
 ```rust,ignore,does_not_compile
-let s1 = String::from("hello");
-let s2 = s1;
-
-println!("{}, world!", s1);
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/src/main.rs:here}}
 ```
 
 You’ll get an error like this because Rust prevents you from using the
 invalidated reference:
 
 ```text
-error[E0382]: use of moved value: `s1`
- --> src/main.rs:5:28
-  |
-3 |     let s2 = s1;
-  |         -- value moved here
-4 |
-5 |     println!("{}, world!", s1);
-  |                            ^^ value used here after move
-  |
-  = note: move occurs because `s1` has type `std::string::String`, which does
-  not implement the `Copy` trait
+{{#include ../listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/output.txt}}
 ```
 
 If you’ve heard the terms *shallow copy* and *deep copy* while working with
@@ -377,10 +349,7 @@ programming languages, you’ve probably seen them before.
 Here’s an example of the `clone` method in action:
 
 ```rust
-let s1 = String::from("hello");
-let s2 = s1.clone();
-
-println!("s1 = {}, s2 = {}", s1, s2);
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-05-clone/src/main.rs:here}}
 ```
 
 This works just fine and explicitly produces the behavior shown in Figure 4-3,
@@ -396,10 +365,7 @@ There’s another wrinkle we haven’t talked about yet. This code using integer
 part of which was shown in Listing 4-2, works and is valid:
 
 ```rust
-let x = 5;
-let y = x;
-
-println!("x = {}, y = {}", x, y);
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-06-copy/src/main.rs:here}}
 ```
 
 But this code seems to contradict what we just learned: we don’t have a call to
@@ -444,29 +410,7 @@ showing where variables go into and out of scope.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let s = String::from("hello");  // s comes into scope
-
-    takes_ownership(s);             // s's value moves into the function...
-                                    // ... and so is no longer valid here
-
-    let x = 5;                      // x comes into scope
-
-    makes_copy(x);                  // x would move into the function,
-                                    // but i32 is Copy, so it’s okay to still
-                                    // use x afterward
-
-} // Here, x goes out of scope, then s. But because s's value was moved, nothing
-  // special happens.
-
-fn takes_ownership(some_string: String) { // some_string comes into scope
-    println!("{}", some_string);
-} // Here, some_string goes out of scope and `drop` is called. The backing
-  // memory is freed.
-
-fn makes_copy(some_integer: i32) { // some_integer comes into scope
-    println!("{}", some_integer);
-} // Here, some_integer goes out of scope. Nothing special happens.
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-03/src/main.rs}}
 ```
 
 <span class="caption">Listing 4-3: Functions with ownership and scope
@@ -485,35 +429,7 @@ similar annotations to those in Listing 4-3.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let s1 = gives_ownership();         // gives_ownership moves its return
-                                        // value into s1
-
-    let s2 = String::from("hello");     // s2 comes into scope
-
-    let s3 = takes_and_gives_back(s2);  // s2 is moved into
-                                        // takes_and_gives_back, which also
-                                        // moves its return value into s3
-} // Here, s3 goes out of scope and is dropped. s2 goes out of scope but was
-  // moved, so nothing happens. s1 goes out of scope and is dropped.
-
-fn gives_ownership() -> String {             // gives_ownership will move its
-                                             // return value into the function
-                                             // that calls it
-
-    let some_string = String::from("hello"); // some_string comes into scope
-
-    some_string                              // some_string is returned and
-                                             // moves out to the calling
-                                             // function
-}
-
-// takes_and_gives_back will take a String and return one
-fn takes_and_gives_back(a_string: String) -> String { // a_string comes into
-                                                      // scope
-
-    a_string  // a_string is returned and moves out to the calling function
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-04/src/main.rs}}
 ```
 
 <span class="caption">Listing 4-4: Transferring ownership of return
@@ -535,19 +451,7 @@ It’s possible to return multiple values using a tuple, as shown in Listing 4-5
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let s1 = String::from("hello");
-
-    let (s2, len) = calculate_length(s1);
-
-    println!("The length of '{}' is {}.", s2, len);
-}
-
-fn calculate_length(s: String) -> (String, usize) {
-    let length = s.len(); // len() returns the length of a String
-
-    (s, length)
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-05/src/main.rs}}
 ```
 
 <span class="caption">Listing 4-5: Returning ownership of parameters</span>
diff --git a/src/ch04-02-references-and-borrowing.md b/src/ch04-02-references-and-borrowing.md
index 985f17f1..5554fc3d 100644
--- a/src/ch04-02-references-and-borrowing.md
+++ b/src/ch04-02-references-and-borrowing.md
@@ -12,17 +12,7 @@ value:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let s1 = String::from("hello");
-
-    let len = calculate_length(&s1);
-
-    println!("The length of '{}' is {}.", s1, len);
-}
-
-fn calculate_length(s: &String) -> usize {
-    s.len()
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-07-reference/src/main.rs:all}}
 ```
 
 First, notice that all the tuple code in the variable declaration and the
@@ -46,12 +36,7 @@ s1`</span>
 Let’s take a closer look at the function call here:
 
 ```rust
-# fn calculate_length(s: &String) -> usize {
-#     s.len()
-# }
-let s1 = String::from("hello");
-
-let len = calculate_length(&s1);
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-07-reference/src/main.rs:here}}
 ```
 
 The `&s1` syntax lets us create a reference that *refers* to the value of `s1`
@@ -62,10 +47,7 @@ Likewise, the signature of the function uses `&` to indicate that the type of
 the parameter `s` is a reference. Let’s add some explanatory annotations:
 
 ```rust
-fn calculate_length(s: &String) -> usize { // s is a reference to a String
-    s.len()
-} // Here, s goes out of scope. But because it does not have ownership of what
-  // it refers to, nothing happens.
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/src/main.rs:here}}
 ```
 
 The scope in which the variable `s` is valid is the same as any function
@@ -84,15 +66,7 @@ Listing 4-6. Spoiler alert: it doesn’t work!
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let s = String::from("hello");
-
-    change(&s);
-}
-
-fn change(some_string: &String) {
-    some_string.push_str(", world");
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-06/src/main.rs}}
 ```
 
 <span class="caption">Listing 4-6: Attempting to modify a borrowed value</span>
@@ -100,13 +74,7 @@ fn change(some_string: &String) {
 Here’s the error:
 
 ```text
-error[E0596]: cannot borrow immutable borrowed content `*some_string` as mutable
- --> error.rs:8:5
-  |
-7 | fn change(some_string: &String) {
-  |                        ------- use `&mut String` here to make mutable
-8 |     some_string.push_str(", world");
-  |     ^^^^^^^^^^^ cannot borrow as mutable
+{{#include ../listings/ch04-understanding-ownership/listing-04-06/output.txt}}
 ```
 
 Just as variables are immutable by default, so are references. We’re not
@@ -119,15 +87,7 @@ We can fix the error in the code from Listing 4-6 with just a small tweak:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let mut s = String::from("hello");
-
-    change(&mut s);
-}
-
-fn change(some_string: &mut String) {
-    some_string.push_str(", world");
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-09-fixes-listing-04-06/src/main.rs}}
 ```
 
 First, we had to change `s` to be `mut`. Then we had to create a mutable
@@ -141,27 +101,13 @@ fail:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-let mut s = String::from("hello");
-
-let r1 = &mut s;
-let r2 = &mut s;
-
-println!("{}, {}", r1, r2);
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/src/main.rs:here}}
 ```
 
 Here’s the error:
 
 ```text
-error[E0499]: cannot borrow `s` as mutable more than once at a time
- --> src/main.rs:5:14
-  |
-4 |     let r1 = &mut s;
-  |              ------ first mutable borrow occurs here
-5 |     let r2 = &mut s;
-  |              ^^^^^^ second mutable borrow occurs here
-6 |
-7 |     println!("{}, {}", r1, r2);
-  |                        -- first borrow later used here
+{{#include ../listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/output.txt}}
 ```
 
 This restriction allows for mutation but in a very controlled fashion. It’s
@@ -184,43 +130,20 @@ As always, we can use curly brackets to create a new scope, allowing for
 multiple mutable references, just not *simultaneous* ones:
 
 ```rust
-let mut s = String::from("hello");
-
-{
-    let r1 = &mut s;
-
-} // r1 goes out of scope here, so we can make a new reference with no problems.
-
-let r2 = &mut s;
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-11-muts-in-separate-scopes/src/main.rs:here}}
 ```
 
 A similar rule exists for combining mutable and immutable references. This code
 results in an error:
 
 ```rust,ignore,does_not_compile
-let mut s = String::from("hello");
-
-let r1 = &s; // no problem
-let r2 = &s; // no problem
-let r3 = &mut s; // BIG PROBLEM
-
-println!("{}, {}, and {}", r1, r2, r3);
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/src/main.rs:here}}
 ```
 
 Here’s the error:
 
 ```text
-error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immutable
- --> src/main.rs:6:14
-  |
-4 |     let r1 = &s; // no problem
-  |              -- immutable borrow occurs here
-5 |     let r2 = &s; // no problem
-6 |     let r3 = &mut s; // BIG PROBLEM
-  |              ^^^^^^ mutable borrow occurs here
-7 |
-8 |     println!("{}, {}, and {}", r1, r2, r3);
-  |                                -- immutable borrow later used here
+{{#include ../listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/output.txt}}
 ```
 
 Whew! We *also* cannot have a mutable reference while we have an immutable one.
@@ -235,15 +158,7 @@ compile because the last usage of the immutable references occurs before the
 mutable reference is introduced:
 
 ```rust,edition2018
-let mut s = String::from("hello");
-
-let r1 = &s; // no problem
-let r2 = &s; // no problem
-println!("{} and {}", r1, r2);
-// r1 and r2 are no longer used after this point
-
-let r3 = &mut s; // no problem
-println!("{}", r3);
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs:here}}
 ```
 
 The scopes of the immutable references `r1` and `r2` end after the `println!`
@@ -271,29 +186,13 @@ compile-time error:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let reference_to_nothing = dangle();
-}
-
-fn dangle() -> &String {
-    let s = String::from("hello");
-
-    &s
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-14-dangling-reference/src/main.rs}}
 ```
 
 Here’s the error:
 
 ```text
-error[E0106]: missing lifetime specifier
- --> main.rs:5:16
-  |
-5 | fn dangle() -> &String {
-  |                ^ expected lifetime parameter
-  |
-  = help: this function's return type contains a borrowed value, but there is
-  no value for it to be borrowed from
-  = help: consider giving it a 'static lifetime
+{{#include ../listings/ch04-understanding-ownership/no-listing-14-dangling-reference/output.txt}}
 ```
 
 This error message refers to a feature we haven’t covered yet: lifetimes. We’ll
@@ -311,13 +210,7 @@ Let’s take a closer look at exactly what’s happening at each stage of our
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn dangle() -> &String { // dangle returns a reference to a String
-
-    let s = String::from("hello"); // s is a new String
-
-    &s // we return a reference to the String, s
-} // Here, s goes out of scope, and is dropped. Its memory goes away.
-  // Danger!
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-15-dangling-reference-annotated/src/main.rs:here}}
 ```
 
 Because `s` is created inside `dangle`, when the code of `dangle` is finished,
@@ -328,11 +221,7 @@ won’t let us do this.
 The solution here is to return the `String` directly:
 
 ```rust
-fn no_dangle() -> String {
-    let s = String::from("hello");
-
-    s
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-16-no-dangle/src/main.rs:here}}
 ```
 
 This works without any problems. Ownership is moved out, and nothing is
diff --git a/src/ch04-03-slices.md b/src/ch04-03-slices.md
index 969884cf..902cf3a9 100644
--- a/src/ch04-03-slices.md
+++ b/src/ch04-03-slices.md
@@ -23,17 +23,7 @@ end of the word. Let’s try that, as shown in Listing 4-7.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn first_word(s: &String) -> usize {
-    let bytes = s.as_bytes();
-
-    for (i, &item) in bytes.iter().enumerate() {
-        if item == b' ' {
-            return i;
-        }
-    }
-
-    s.len()
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-07/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 4-7: The `first_word` function that returns a
@@ -44,13 +34,13 @@ a value is a space, we’ll convert our `String` to an array of bytes using the
 `as_bytes` method:
 
 ```rust,ignore
-let bytes = s.as_bytes();
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-07/src/main.rs:as_bytes}}
 ```
 
 Next, we create an iterator over the array of bytes using the `iter` method:
 
 ```rust,ignore
-for (i, &item) in bytes.iter().enumerate() {
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-07/src/main.rs:iter}}
 ```
 
 We’ll discuss iterators in more detail in Chapter 13. For now, know that `iter`
@@ -71,12 +61,7 @@ using the byte literal syntax. If we find a space, we return the position.
 Otherwise, we return the length of the string by using `s.len()`:
 
 ```rust,ignore
-    if item == b' ' {
-        return i;
-    }
-}
-
-s.len()
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-07/src/main.rs:inside_for}}
 ```
 
 We now have a way to find out the index of the end of the first word in the
@@ -89,28 +74,7 @@ uses the `first_word` function from Listing 4-7.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# fn first_word(s: &String) -> usize {
-#     let bytes = s.as_bytes();
-#
-#     for (i, &item) in bytes.iter().enumerate() {
-#         if item == b' ' {
-#             return i;
-#         }
-#     }
-#
-#     s.len()
-# }
-#
-fn main() {
-    let mut s = String::from("hello world");
-
-    let word = first_word(&s); // word will get the value 5
-
-    s.clear(); // this empties the String, making it equal to ""
-
-    // word still has the value 5 here, but there's no more string that
-    // we could meaningfully use the value 5 with. word is now totally invalid!
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-08/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 4-8: Storing the result from calling the
@@ -142,10 +106,7 @@ Luckily, Rust has a solution to this problem: string slices.
 A *string slice* is a reference to part of a `String`, and it looks like this:
 
 ```rust
-let s = String::from("hello world");
-
-let hello = &s[0..5];
-let world = &s[6..11];
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-17-slice/src/main.rs:here}}
 ```
 
 This is similar to taking a reference to the whole `String` but with the extra
@@ -214,17 +175,7 @@ slice. The type that signifies “string slice” is written as `&str`:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn first_word(s: &String) -> &str {
-    let bytes = s.as_bytes();
-
-    for (i, &item) in bytes.iter().enumerate() {
-        if item == b' ' {
-            return &s[0..i];
-        }
-    }
-
-    &s[..]
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-18-first-word-slice/src/main.rs:here}}
 ```
 
 We get the index for the end of the word in the same way as we did in Listing
@@ -255,31 +206,13 @@ compile-time error:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let mut s = String::from("hello world");
-
-    let word = first_word(&s);
-
-    s.clear(); // error!
-
-    println!("the first word is: {}", word);
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/no-listing-19-slice-error/src/main.rs:here}}
 ```
 
 Here’s the compiler error:
 
 ```text
-error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immutable
-  --> src/main.rs:18:5
-   |
-16 |     let word = first_word(&s);
-   |                           -- immutable borrow occurs here
-17 |
-18 |     s.clear(); // error!
-   |     ^^^^^^^^^ mutable borrow occurs here
-19 |
-20 |     println!("the first word is: {}", word);
-   |                                       ---- immutable borrow later used here
+{{#include ../listings/ch04-understanding-ownership/no-listing-19-slice-error/output.txt}}
 ```
 
 Recall from the borrowing rules that if we have an immutable reference to
@@ -315,7 +248,7 @@ instead because it allows us to use the same function on both `&String` values
 and `&str` values.
 
 ```rust,ignore
-fn first_word(s: &str) -> &str {
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-09/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 4-9: Improving the `first_word` function by using
@@ -329,32 +262,7 @@ without losing any functionality:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# fn first_word(s: &str) -> &str {
-#     let bytes = s.as_bytes();
-#
-#     for (i, &item) in bytes.iter().enumerate() {
-#         if item == b' ' {
-#             return &s[0..i];
-#         }
-#     }
-#
-#     &s[..]
-# }
-fn main() {
-    let my_string = String::from("hello world");
-
-    // first_word works on slices of `String`s
-    let word = first_word(&my_string[..]);
-
-    let my_string_literal = "hello world";
-
-    // first_word works on slices of string literals
-    let word = first_word(&my_string_literal[..]);
-
-    // Because string literals *are* string slices already,
-    // this works too, without the slice syntax!
-    let word = first_word(my_string_literal);
-}
+{{#rustdoc_include ../listings/ch04-understanding-ownership/listing-04-09/src/main.rs:usage}}
 ```
 
 ### Other Slices
diff --git a/src/ch05-01-defining-structs.md b/src/ch05-01-defining-structs.md
index 17fa72a0..c65b101d 100644
--- a/src/ch05-01-defining-structs.md
+++ b/src/ch05-01-defining-structs.md
@@ -13,12 +13,7 @@ the pieces of data, which we call *fields*. For example, Listing 5-1 shows a
 struct that stores information about a user account.
 
 ```rust
-struct User {
-    username: String,
-    email: String,
-    sign_in_count: u64,
-    active: bool,
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-01/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 5-1: A `User` struct definition</span>
@@ -34,19 +29,7 @@ in that template with particular data to create values of the type. For
 example, we can declare a particular user as shown in Listing 5-2.
 
 ```rust
-# struct User {
-#     username: String,
-#     email: String,
-#     sign_in_count: u64,
-#     active: bool,
-# }
-#
-let user1 = User {
-    email: String::from("someone@example.com"),
-    username: String::from("someusername123"),
-    active: true,
-    sign_in_count: 1,
-};
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-02/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 5-2: Creating an instance of the `User`
@@ -59,21 +42,7 @@ the dot notation and assigning into a particular field. Listing 5-3 shows how
 to change the value in the `email` field of a mutable `User` instance.
 
 ```rust
-# struct User {
-#     username: String,
-#     email: String,
-#     sign_in_count: u64,
-#     active: bool,
-# }
-#
-let mut user1 = User {
-    email: String::from("someone@example.com"),
-    username: String::from("someusername123"),
-    active: true,
-    sign_in_count: 1,
-};
-
-user1.email = String::from("anotheremail@example.com");
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-03/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 5-3: Changing the value in the `email` field of a
@@ -89,21 +58,7 @@ the given email and username. The `active` field gets the value of `true`, and
 the `sign_in_count` gets a value of `1`.
 
 ```rust
-# struct User {
-#     username: String,
-#     email: String,
-#     sign_in_count: u64,
-#     active: bool,
-# }
-#
-fn build_user(email: String, username: String) -> User {
-    User {
-        email: email,
-        username: username,
-        active: true,
-        sign_in_count: 1,
-    }
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-04/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 5-4: A `build_user` function that takes an email
@@ -122,21 +77,7 @@ Listing 5-4, we can use the *field init shorthand* syntax to rewrite
 repetition of `email` and `username`, as shown in Listing 5-5.
 
 ```rust
-# struct User {
-#     username: String,
-#     email: String,
-#     sign_in_count: u64,
-#     active: bool,
-# }
-#
-fn build_user(email: String, username: String) -> User {
-    User {
-        email,
-        username,
-        active: true,
-        sign_in_count: 1,
-    }
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-05/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 5-5: A `build_user` function that uses field init
@@ -159,26 +100,7 @@ the update syntax. We set new values for `email` and `username` but otherwise
 use the same values from `user1` that we created in Listing 5-2.
 
 ```rust
-# struct User {
-#     username: String,
-#     email: String,
-#     sign_in_count: u64,
-#     active: bool,
-# }
-#
-# let user1 = User {
-#     email: String::from("someone@example.com"),
-#     username: String::from("someusername123"),
-#     active: true,
-#     sign_in_count: 1,
-# };
-#
-let user2 = User {
-    email: String::from("another@example.com"),
-    username: String::from("anotherusername567"),
-    active: user1.active,
-    sign_in_count: user1.sign_in_count,
-};
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-06/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 5-6: Creating a new `User` instance using some of
@@ -189,25 +111,7 @@ shown in Listing 5-7. The syntax `..` specifies that the remaining fields not
 explicitly set should have the same value as the fields in the given instance.
 
 ```rust
-# struct User {
-#     username: String,
-#     email: String,
-#     sign_in_count: u64,
-#     active: bool,
-# }
-#
-# let user1 = User {
-#     email: String::from("someone@example.com"),
-#     username: String::from("someusername123"),
-#     active: true,
-#     sign_in_count: 1,
-# };
-#
-let user2 = User {
-    email: String::from("another@example.com"),
-    username: String::from("anotherusername567"),
-    ..user1
-};
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-07/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 5-7: Using struct update syntax to set new
@@ -232,11 +136,7 @@ followed by the types in the tuple. For example, here are definitions and
 usages of two tuple structs named `Color` and `Point`:
 
 ```rust
-struct Color(i32, i32, i32);
-struct Point(i32, i32, i32);
-
-let black = Color(0, 0, 0);
-let origin = Point(0, 0, 0);
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/no-listing-01-tuple-structs/src/main.rs:here}}
 ```
 
 Note that the `black` and `origin` values are different types, because they’re
@@ -271,6 +171,8 @@ itself. We’ll discuss traits in Chapter 10.
 >
 > <span class="filename">Filename: src/main.rs</span>
 >
+> <!-- CAN'T EXTRACT SEE https://github.com/rust-lang/mdBook/issues/1127 -->
+>
 > ```rust,ignore,does_not_compile
 > struct User {
 >     username: &str,
@@ -292,19 +194,35 @@ itself. We’ll discuss traits in Chapter 10.
 > The compiler will complain that it needs lifetime specifiers:
 >
 > ```text
+> $ cargo run
+>    Compiling structs v0.1.0 (file:///projects/structs)
 > error[E0106]: missing lifetime specifier
->  -->
+>  --> src/main.rs:2:15
 >   |
 > 2 |     username: &str,
 >   |               ^ expected lifetime parameter
 >
 > error[E0106]: missing lifetime specifier
->  -->
+>  --> src/main.rs:3:12
 >   |
 > 3 |     email: &str,
 >   |            ^ expected lifetime parameter
+>
+> error: aborting due to 2 previous errors
+>
+> For more information about this error, try `rustc --explain E0106`.
+> error: could not compile `structs`.
+>
+> To learn more, run the command again with --verbose.
 > ```
 >
 > In Chapter 10, we’ll discuss how to fix these errors so you can store
 > references in structs, but for now, we’ll fix errors like these using owned
 > types like `String` instead of references like `&str`.
+
+<!-- manual-regeneration
+for the error above
+after running update-rustc.sh:
+pbcopy < listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/output.txt
+paste below
+add `> ` before every line -->
\ No newline at end of file
diff --git a/src/ch05-02-example-structs.md b/src/ch05-02-example-structs.md
index 46f88f1b..03f69d98 100644
--- a/src/ch05-02-example-structs.md
+++ b/src/ch05-02-example-structs.md
@@ -12,19 +12,7 @@ exactly that in our project’s *src/main.rs*.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let width1 = 30;
-    let height1 = 50;
-
-    println!(
-        "The area of the rectangle is {} square pixels.",
-        area(width1, height1)
-    );
-}
-
-fn area(width: u32, height: u32) -> u32 {
-    width * height
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-08/src/main.rs:all}}
 ```
 
 <span class="caption">Listing 5-8: Calculating the area of a rectangle
@@ -33,7 +21,7 @@ specified by separate width and height variables</span>
 Now, run this program using `cargo run`:
 
 ```text
-The area of the rectangle is 1500 square pixels.
+{{#include ../listings/ch05-using-structs-to-structure-related-data/listing-05-08/output.txt}}
 ```
 
 Even though Listing 5-8 works and figures out the area of the rectangle by
@@ -44,7 +32,7 @@ rectangle.
 The issue with this code is evident in the signature of `area`:
 
 ```rust,ignore
-fn area(width: u32, height: u32) -> u32 {
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-08/src/main.rs:here}}
 ```
 
 The `area` function is supposed to calculate the area of one rectangle, but the
@@ -61,18 +49,7 @@ Listing 5-9 shows another version of our program that uses tuples.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let rect1 = (30, 50);
-
-    println!(
-        "The area of the rectangle is {} square pixels.",
-        area(rect1)
-    );
-}
-
-fn area(dimensions: (u32, u32)) -> u32 {
-    dimensions.0 * dimensions.1
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-09/src/main.rs}}
 ```
 
 <span class="caption">Listing 5-9: Specifying the width and height of the
@@ -100,23 +77,7 @@ parts, as shown in Listing 5-10.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-struct Rectangle {
-    width: u32,
-    height: u32,
-}
-
-fn main() {
-    let rect1 = Rectangle { width: 30, height: 50 };
-
-    println!(
-        "The area of the rectangle is {} square pixels.",
-        area(&rect1)
-    );
-}
-
-fn area(rectangle: &Rectangle) -> u32 {
-    rectangle.width * rectangle.height
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-10/src/main.rs}}
 ```
 
 <span class="caption">Listing 5-10: Defining a `Rectangle` struct</span>
@@ -150,16 +111,7 @@ work, however.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-struct Rectangle {
-    width: u32,
-    height: u32,
-}
-
-fn main() {
-    let rect1 = Rectangle { width: 30, height: 50 };
-
-    println!("rect1 is {}", rect1);
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-11/src/main.rs}}
 ```
 
 <span class="caption">Listing 5-11: Attempting to print a `Rectangle`
@@ -168,7 +120,7 @@ instance</span>
 When we compile this code, we get an error with this core message:
 
 ```text
-error[E0277]: `Rectangle` doesn't implement `std::fmt::Display`
+{{#include ../listings/ch05-using-structs-to-structure-related-data/listing-05-11/output.txt:3}}
 ```
 
 The `println!` macro can do many kinds of formatting, and by default, the curly
@@ -185,8 +137,7 @@ implementation of `Display`.
 If we continue reading the errors, we’ll find this helpful note:
 
 ```text
-= help: the trait `std::fmt::Display` is not implemented for `Rectangle`
-= note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
+{{#include ../listings/ch05-using-structs-to-structure-related-data/listing-05-11/output.txt:9:10}}
 ```
 
 Let’s try it! The `println!` macro call will now look like `println!("rect1 is
@@ -198,14 +149,13 @@ see its value while we’re debugging our code.
 Compile the code with this change. Drat! We still get an error:
 
 ```text
-error[E0277]: `Rectangle` doesn't implement `std::fmt::Debug`
+{{#include ../listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/output.txt:3}}
 ```
 
 But again, the compiler gives us a helpful note:
 
 ```text
-= help: the trait `std::fmt::Debug` is not implemented for `Rectangle`
-= note: add `#[derive(Debug)]` or manually implement `std::fmt::Debug`
+{{#include ../listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/output.txt:9:10}}
 ```
 
 Rust *does* include functionality to print out debugging information, but we
@@ -216,17 +166,7 @@ definition, as shown in Listing 5-12.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-#[derive(Debug)]
-struct Rectangle {
-    width: u32,
-    height: u32,
-}
-
-fn main() {
-    let rect1 = Rectangle { width: 30, height: 50 };
-
-    println!("rect1 is {:?}", rect1);
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-12/src/main.rs}}
 ```
 
 <span class="caption">Listing 5-12: Adding the annotation to derive the `Debug`
@@ -236,7 +176,7 @@ Now when we run the program, we won’t get any errors, and we’ll see the
 following output:
 
 ```text
-rect1 is Rectangle { width: 30, height: 50 }
+{{#include ../listings/ch05-using-structs-to-structure-related-data/listing-05-12/output.txt}}
 ```
 
 Nice! It’s not the prettiest output, but it shows the values of all the fields
@@ -246,10 +186,7 @@ those cases, we can use `{:#?}` instead of `{:?}` in the `println!` string.
 When we use the `{:#?}` style in the example, the output will look like this:
 
 ```text
-rect1 is Rectangle {
-    width: 30,
-    height: 50
-}
+{{#include ../listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/output.txt}}
 ```
 
 Rust has provided a number of traits for us to use with the `derive` annotation
diff --git a/src/ch05-03-method-syntax.md b/src/ch05-03-method-syntax.md
index d8a338c9..f074497c 100644
--- a/src/ch05-03-method-syntax.md
+++ b/src/ch05-03-method-syntax.md
@@ -17,26 +17,7 @@ in Listing 5-13.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-#[derive(Debug)]
-struct Rectangle {
-    width: u32,
-    height: u32,
-}
-
-impl Rectangle {
-    fn area(&self) -> u32 {
-        self.width * self.height
-    }
-}
-
-fn main() {
-    let rect1 = Rectangle { width: 30, height: 50 };
-
-    println!(
-        "The area of the rectangle is {} square pixels.",
-        rect1.area()
-    );
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-13/src/main.rs}}
 ```
 
 <span class="caption">Listing 5-13: Defining an `area` method on the
@@ -90,6 +71,7 @@ provide.
 > automatically adds in `&`, `&mut`, or `*` so `object` matches the signature of
 > the method. In other words, the following are the same:
 >
+<!-- CAN'T EXTRACT SEE BUG TODO -->
 > ```rust
 > # #[derive(Debug,Copy,Clone)]
 > # struct Point {
@@ -130,14 +112,7 @@ method.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-fn main() {
-    let rect1 = Rectangle { width: 30, height: 50 };
-    let rect2 = Rectangle { width: 10, height: 40 };
-    let rect3 = Rectangle { width: 60, height: 45 };
-
-    println!("Can rect1 hold rect2? {}", rect1.can_hold(&rect2));
-    println!("Can rect1 hold rect3? {}", rect1.can_hold(&rect3));
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-14/src/main.rs}}
 ```
 
 <span class="caption">Listing 5-14: Using the as-yet-unwritten `can_hold`
@@ -169,21 +144,7 @@ Listing 5-13, shown in Listing 5-15.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# #[derive(Debug)]
-# struct Rectangle {
-#     width: u32,
-#     height: u32,
-# }
-#
-impl Rectangle {
-    fn area(&self) -> u32 {
-        self.width * self.height
-    }
-
-    fn can_hold(&self, other: &Rectangle) -> bool {
-        self.width > other.width && self.height > other.height
-    }
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-15/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 5-15: Implementing the `can_hold` method on
@@ -212,17 +173,7 @@ specify the same value twice:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# #[derive(Debug)]
-# struct Rectangle {
-#     width: u32,
-#     height: u32,
-# }
-#
-impl Rectangle {
-    fn square(size: u32) -> Rectangle {
-        Rectangle { width: size, height: size }
-    }
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/no-listing-03-associated-functions/src/main.rs:here}}
 ```
 
 To call this associated function, we use the `::` syntax with the struct name;
@@ -237,23 +188,7 @@ Each struct is allowed to have multiple `impl` blocks. For example, Listing
 in its own `impl` block.
 
 ```rust
-# #[derive(Debug)]
-# struct Rectangle {
-#     width: u32,
-#     height: u32,
-# }
-#
-impl Rectangle {
-    fn area(&self) -> u32 {
-        self.width * self.height
-    }
-}
-
-impl Rectangle {
-    fn can_hold(&self, other: &Rectangle) -> bool {
-        self.width > other.width && self.height > other.height
-    }
-}
+{{#rustdoc_include ../listings/ch05-using-structs-to-structure-related-data/listing-05-16/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 5-16: Rewriting Listing 5-15 using multiple `impl`
diff --git a/src/ch06-01-defining-an-enum.md b/src/ch06-01-defining-an-enum.md
index 0d25afbb..1067af06 100644
--- a/src/ch06-01-defining-an-enum.md
+++ b/src/ch06-01-defining-an-enum.md
@@ -19,10 +19,7 @@ listing the possible kinds an IP address can be, `V4` and `V6`. These are the
 variants of the enum:
 
 ```rust
-enum IpAddrKind {
-    V4,
-    V6,
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/src/main.rs:def}}
 ```
 
 `IpAddrKind` is now a custom data type that we can use elsewhere in our code.
@@ -32,13 +29,7 @@ enum IpAddrKind {
 We can create instances of each of the two variants of `IpAddrKind` like this:
 
 ```rust
-# enum IpAddrKind {
-#     V4,
-#     V6,
-# }
-#
-let four = IpAddrKind::V4;
-let six = IpAddrKind::V6;
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/src/main.rs:instance}}
 ```
 
 Note that the variants of the enum are namespaced under its identifier, and we
@@ -48,26 +39,13 @@ both values `IpAddrKind::V4` and `IpAddrKind::V6` are of the same type:
 `IpAddrKind`:
 
 ```rust
-# enum IpAddrKind {
-#     V4,
-#     V6,
-# }
-#
-fn route(ip_kind: IpAddrKind) { }
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/src/main.rs:fn}}
 ```
 
 And we can call this function with either variant:
 
 ```rust
-# enum IpAddrKind {
-#     V4,
-#     V6,
-# }
-#
-# fn route(ip_kind: IpAddrKind) { }
-#
-route(IpAddrKind::V4);
-route(IpAddrKind::V6);
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-01-defining-enums/src/main.rs:fn_call}}
 ```
 
 Using enums has even more advantages. Thinking more about our IP address type,
@@ -76,25 +54,7 @@ only know what *kind* it is. Given that you just learned about structs in
 Chapter 5, you might tackle this problem as shown in Listing 6-1.
 
 ```rust
-enum IpAddrKind {
-    V4,
-    V6,
-}
-
-struct IpAddr {
-    kind: IpAddrKind,
-    address: String,
-}
-
-let home = IpAddr {
-    kind: IpAddrKind::V4,
-    address: String::from("127.0.0.1"),
-};
-
-let loopback = IpAddr {
-    kind: IpAddrKind::V6,
-    address: String::from("::1"),
-};
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/listing-06-01/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 6-1: Storing the data and `IpAddrKind` variant of
@@ -115,14 +75,7 @@ variant. This new definition of the `IpAddr` enum says that both `V4` and `V6`
 variants will have associated `String` values:
 
 ```rust
-enum IpAddr {
-    V4(String),
-    V6(String),
-}
-
-let home = IpAddr::V4(String::from("127.0.0.1"));
-
-let loopback = IpAddr::V6(String::from("::1"));
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-02-enum-with-data/src/main.rs:here}}
 ```
 
 We attach data to each variant of the enum directly, so there is no need for an
@@ -136,14 +89,7 @@ still express `V6` addresses as one `String` value, we wouldn’t be able to wit
 a struct. Enums handle this case with ease:
 
 ```rust
-enum IpAddr {
-    V4(u8, u8, u8, u8),
-    V6(String),
-}
-
-let home = IpAddr::V4(127, 0, 0, 1);
-
-let loopback = IpAddr::V6(String::from("::1"));
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-03-variants-with-different-data/src/main.rs:here}}
 ```
 
 We’ve shown several different ways to define data structures to store version
@@ -186,12 +132,7 @@ Let’s look at another example of an enum in Listing 6-2: this one has a wide
 variety of types embedded in its variants.
 
 ```rust
-enum Message {
-    Quit,
-    Move { x: i32, y: i32 },
-    Write(String),
-    ChangeColor(i32, i32, i32),
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/listing-06-02/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 6-2: A `Message` enum whose variants each store
@@ -211,13 +152,7 @@ type. The following structs could hold the same data that the preceding enum
 variants hold:
 
 ```rust
-struct QuitMessage; // unit struct
-struct MoveMessage {
-    x: i32,
-    y: i32,
-}
-struct WriteMessage(String); // tuple struct
-struct ChangeColorMessage(i32, i32, i32); // tuple struct
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-04-structs-similar-to-message-enum/src/main.rs:here}}
 ```
 
 But if we used the different structs, which each have their own type, we
@@ -229,21 +164,7 @@ define methods on structs using `impl`, we’re also able to define methods on
 enums. Here’s a method named `call` that we could define on our `Message` enum:
 
 ```rust
-# enum Message {
-#     Quit,
-#     Move { x: i32, y: i32 },
-#     Write(String),
-#     ChangeColor(i32, i32, i32),
-# }
-#
-impl Message {
-    fn call(&self) {
-        // method body would be defined here
-    }
-}
-
-let m = Message::Write(String::from("hello"));
-m.call();
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-05-methods-on-enums/src/main.rs:here}}
 ```
 
 The body of the method would use `self` to get the value that we called the
@@ -319,10 +240,7 @@ For now, all you need to know is that `<T>` means the `Some` variant of the
 using `Option` values to hold number types and string types:
 
 ```rust
-let some_number = Some(5);
-let some_string = Some("a string");
-
-let absent_number: Option<i32> = None;
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-06-option-examples/src/main.rs:here}}
 ```
 
 If we use `None` rather than `Some`, we need to tell Rust what type of
@@ -340,22 +258,13 @@ definitely a valid value. For example, this code won’t compile because it’s
 trying to add an `i8` to an `Option<i8>`:
 
 ```rust,ignore,does_not_compile
-let x: i8 = 5;
-let y: Option<i8> = Some(5);
-
-let sum = x + y;
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/src/main.rs:here}}
 ```
 
 If we run this code, we get an error message like this:
 
 ```text
-error[E0277]: the trait bound `i8: std::ops::Add<std::option::Option<i8>>` is
-not satisfied
- -->
-  |
-5 |     let sum = x + y;
-  |                 ^ no implementation for `i8 + std::option::Option<i8>`
-  |
+{{#include ../listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/output.txt}}
 ```
 
 Intense! In effect, this error message means that Rust doesn’t understand how
diff --git a/src/ch06-02-match.md b/src/ch06-02-match.md
index b00459be..f4038086 100644
--- a/src/ch06-02-match.md
+++ b/src/ch06-02-match.md
@@ -20,21 +20,7 @@ similar way as the counting machine, determine which coin it is and return its
 value in cents, as shown here in Listing 6-3.
 
 ```rust
-enum Coin {
-    Penny,
-    Nickel,
-    Dime,
-    Quarter,
-}
-
-fn value_in_cents(coin: Coin) -> u8 {
-    match coin {
-        Coin::Penny => 1,
-        Coin::Nickel => 5,
-        Coin::Dime => 10,
-        Coin::Quarter => 25,
-    }
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/listing-06-03/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 6-3: An enum and a `match` expression that has
@@ -69,24 +55,7 @@ following code would print “Lucky penny!” every time the method was called w
 a `Coin::Penny` but would still return the last value of the block, `1`:
 
 ```rust
-# enum Coin {
-#    Penny,
-#    Nickel,
-#    Dime,
-#    Quarter,
-# }
-#
-fn value_in_cents(coin: Coin) -> u8 {
-    match coin {
-        Coin::Penny => {
-            println!("Lucky penny!");
-            1
-        },
-        Coin::Nickel => 5,
-        Coin::Dime => 10,
-        Coin::Quarter => 25,
-    }
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-08-match-arm-multiple-lines/src/main.rs:here}}
 ```
 
 ### Patterns that Bind to Values
@@ -103,19 +72,7 @@ our `enum` by changing the `Quarter` variant to include a `UsState` value stored
 inside it, which we’ve done here in Listing 6-4.
 
 ```rust
-#[derive(Debug)] // so we can inspect the state in a minute
-enum UsState {
-    Alabama,
-    Alaska,
-    // --snip--
-}
-
-enum Coin {
-    Penny,
-    Nickel,
-    Dime,
-    Quarter(UsState),
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/listing-06-04/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 6-4: A `Coin` enum in which the `Quarter` variant
@@ -132,30 +89,7 @@ pattern that matches values of the variant `Coin::Quarter`. When a
 quarter’s state. Then we can use `state` in the code for that arm, like so:
 
 ```rust
-# #[derive(Debug)]
-# enum UsState {
-#    Alabama,
-#    Alaska,
-# }
-#
-# enum Coin {
-#    Penny,
-#    Nickel,
-#    Dime,
-#    Quarter(UsState),
-# }
-#
-fn value_in_cents(coin: Coin) -> u8 {
-    match coin {
-        Coin::Penny => 1,
-        Coin::Nickel => 5,
-        Coin::Dime => 10,
-        Coin::Quarter(state) => {
-            println!("State quarter from {:?}!", state);
-            25
-        },
-    }
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/src/main.rs:here}}
 ```
 
 If we were to call `value_in_cents(Coin::Quarter(UsState::Alaska))`, `coin`
@@ -182,16 +116,7 @@ This function is very easy to write, thanks to `match`, and will look like
 Listing 6-5.
 
 ```rust
-fn plus_one(x: Option<i32>) -> Option<i32> {
-    match x {
-        None => None,
-        Some(i) => Some(i + 1),
-    }
-}
-
-let five = Some(5);
-let six = plus_one(five);
-let none = plus_one(None);
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/listing-06-05/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 6-5: A function that uses a `match` expression on
@@ -202,14 +127,14 @@ Let’s examine the first execution of `plus_one` in more detail. When we call
 value `Some(5)`. We then compare that against each match arm.
 
 ```rust,ignore
-None => None,
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/listing-06-05/src/main.rs:first_arm}}
 ```
 
 The `Some(5)` value doesn’t match the pattern `None`, so we continue to the
 next arm.
 
 ```rust,ignore
-Some(i) => Some(i + 1),
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/listing-06-05/src/main.rs:second_arm}}
 ```
 
 Does `Some(5)` match `Some(i)`? Why yes it does! We have the same variant. The
@@ -221,7 +146,7 @@ Now let’s consider the second call of `plus_one` in Listing 6-5, where `x` is
 `None`. We enter the `match` and compare to the first arm.
 
 ```rust,ignore
-None => None,
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/listing-06-05/src/main.rs:first_arm}}
 ```
 
 It matches! There’s no value to add to, so the program stops and returns the
@@ -240,11 +165,7 @@ There’s one other aspect of `match` we need to discuss. Consider this version
 of our `plus_one` function that has a bug and won’t compile:
 
 ```rust,ignore,does_not_compile
-fn plus_one(x: Option<i32>) -> Option<i32> {
-    match x {
-        Some(i) => Some(i + 1),
-    }
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/src/main.rs:here}}
 ```
 
 We didn’t handle the `None` case, so this code will cause a bug. Luckily, it’s
@@ -252,11 +173,7 @@ a bug Rust knows how to catch. If we try to compile this code, we’ll get this
 error:
 
 ```text
-error[E0004]: non-exhaustive patterns: `None` not covered
- -->
-  |
-6 |         match x {
-  |               ^ pattern `None` not covered
+{{#include ../listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/output.txt}}
 ```
 
 Rust knows that we didn’t cover every possible case and even knows which
@@ -275,14 +192,7 @@ care about the values 1, 3, 5, and 7, we don’t want to have to list out 0, 2,
 special pattern `_` instead:
 
 ```rust
-let some_u8_value = 0u8;
-match some_u8_value {
-    1 => println!("one"),
-    3 => println!("three"),
-    5 => println!("five"),
-    7 => println!("seven"),
-    _ => (),
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-11-underscore-placeholder/src/main.rs:here}}
 ```
 
 The `_` pattern will match any value. By putting it after our other arms, the
diff --git a/src/ch06-03-if-let.md b/src/ch06-03-if-let.md
index 65835463..3eb0cc34 100644
--- a/src/ch06-03-if-let.md
+++ b/src/ch06-03-if-let.md
@@ -6,11 +6,7 @@ program in Listing 6-6 that matches on an `Option<u8>` value but only wants to
 execute code if the value is 3.
 
 ```rust
-let some_u8_value = Some(0u8);
-match some_u8_value {
-    Some(3) => println!("three"),
-    _ => (),
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/listing-06-06/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 6-6: A `match` that only cares about executing
@@ -25,10 +21,7 @@ Instead, we could write this in a shorter way using `if let`. The following
 code behaves the same as the `match` in Listing 6-6:
 
 ```rust
-# let some_u8_value = Some(0u8);
-if let Some(3) = some_u8_value {
-    println!("three");
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/src/main.rs:here}}
 ```
 
 The syntax `if let` takes a pattern and an expression separated by an equal
@@ -53,48 +46,13 @@ announcing the state of the quarters, we could do that with a `match`
 expression like this:
 
 ```rust
-# #[derive(Debug)]
-# enum UsState {
-#    Alabama,
-#    Alaska,
-# }
-#
-# enum Coin {
-#    Penny,
-#    Nickel,
-#    Dime,
-#    Quarter(UsState),
-# }
-# let coin = Coin::Penny;
-let mut count = 0;
-match coin {
-    Coin::Quarter(state) => println!("State quarter from {:?}!", state),
-    _ => count += 1,
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/src/main.rs:here}}
 ```
 
 Or we could use an `if let` and `else` expression like this:
 
 ```rust
-# #[derive(Debug)]
-# enum UsState {
-#    Alabama,
-#    Alaska,
-# }
-#
-# enum Coin {
-#    Penny,
-#    Nickel,
-#    Dime,
-#    Quarter(UsState),
-# }
-# let coin = Coin::Penny;
-let mut count = 0;
-if let Coin::Quarter(state) = coin {
-    println!("State quarter from {:?}!", state);
-} else {
-    count += 1;
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/src/main.rs:here}}
 ```
 
 If you have a situation in which your program has logic that is too verbose to
diff --git a/src/ch07-02-defining-modules-to-control-scope-and-privacy.md b/src/ch07-02-defining-modules-to-control-scope-and-privacy.md
index d2674f3f..d46ef9b0 100644
--- a/src/ch07-02-defining-modules-to-control-scope-and-privacy.md
+++ b/src/ch07-02-defining-modules-to-control-scope-and-privacy.md
@@ -29,22 +29,8 @@ Listing 7-1 into *src/lib.rs* to define some modules and function signatures.
 
 <span class="filename">Filename: src/lib.rs</span>
 
-```rust,ignore
-mod front_of_house {
-    mod hosting {
-        fn add_to_waitlist() {}
-
-        fn seat_at_table() {}
-    }
-
-    mod serving {
-        fn take_order() {}
-
-        fn serve_order() {}
-
-        fn take_payment() {}
-    }
-}
+```rust
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-01/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 7-1: A `front_of_house` module containing other
diff --git a/src/ch07-03-paths-for-referring-to-an-item-in-the-module-tree.md b/src/ch07-03-paths-for-referring-to-an-item-in-the-module-tree.md
index ad584b72..d765a663 100644
--- a/src/ch07-03-paths-for-referring-to-an-item-in-the-module-tree.md
+++ b/src/ch07-03-paths-for-referring-to-an-item-in-the-module-tree.md
@@ -28,19 +28,7 @@ in a bit.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore,does_not_compile
-mod front_of_house {
-    mod hosting {
-        fn add_to_waitlist() {}
-    }
-}
-
-pub fn eat_at_restaurant() {
-    // Absolute path
-    crate::front_of_house::hosting::add_to_waitlist();
-
-    // Relative path
-    front_of_house::hosting::add_to_waitlist();
-}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-03/src/lib.rs}}
 ```
 
 <span class="caption">Listing 7-3: Calling the `add_to_waitlist` function using
@@ -80,19 +68,7 @@ Let’s try to compile Listing 7-3 and find out why it won’t compile yet! The
 error we get is shown in Listing 7-4.
 
 ```text
-$ cargo build
-   Compiling restaurant v0.1.0 (file:///projects/restaurant)
-error[E0603]: module `hosting` is private
- --> src/lib.rs:9:28
-  |
-9 |     crate::front_of_house::hosting::add_to_waitlist();
-  |                            ^^^^^^^
-
-error[E0603]: module `hosting` is private
-  --> src/lib.rs:12:21
-   |
-12 |     front_of_house::hosting::add_to_waitlist();
-   |                     ^^^^^^^
+{{#include ../listings/ch07-managing-growing-projects/listing-07-03/output.txt}}
 ```
 
 <span class="caption">Listing 7-4: Compiler errors from building the code in
@@ -134,19 +110,7 @@ access to the `add_to_waitlist` function in the child module, so we mark the
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore,does_not_compile
-mod front_of_house {
-    pub mod hosting {
-        fn add_to_waitlist() {}
-    }
-}
-
-pub fn eat_at_restaurant() {
-    // Absolute path
-    crate::front_of_house::hosting::add_to_waitlist();
-
-    // Relative path
-    front_of_house::hosting::add_to_waitlist();
-}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-05/src/lib.rs}}
 ```
 
 <span class="caption">Listing 7-5: Declaring the `hosting` module as `pub` to
@@ -156,19 +120,7 @@ Unfortunately, the code in Listing 7-5 still results in an error, as shown in
 Listing 7-6.
 
 ```text
-$ cargo build
-   Compiling restaurant v0.1.0 (file:///projects/restaurant)
-error[E0603]: function `add_to_waitlist` is private
- --> src/lib.rs:9:37
-  |
-9 |     crate::front_of_house::hosting::add_to_waitlist();
-  |                                     ^^^^^^^^^^^^^^^
-
-error[E0603]: function `add_to_waitlist` is private
-  --> src/lib.rs:12:30
-   |
-12 |     front_of_house::hosting::add_to_waitlist();
-   |                              ^^^^^^^^^^^^^^^
+{{#include ../listings/ch07-managing-growing-projects/listing-07-05/output.txt}}
 ```
 
 <span class="caption">Listing 7-6: Compiler errors from building the code in
@@ -190,20 +142,7 @@ keyword before its definition, as in Listing 7-7.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-mod front_of_house {
-    pub mod hosting {
-        pub fn add_to_waitlist() {}
-    }
-}
-
-pub fn eat_at_restaurant() {
-    // Absolute path
-    crate::front_of_house::hosting::add_to_waitlist();
-
-    // Relative path
-    front_of_house::hosting::add_to_waitlist();
-}
-# fn main() {}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-07/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 7-7: Adding the `pub` keyword to `mod hosting`
@@ -246,17 +185,7 @@ the path to `serve_order` starting with `super`:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-fn serve_order() {}
-
-mod back_of_house {
-    fn fix_incorrect_order() {
-        cook_order();
-        super::serve_order();
-    }
-
-    fn cook_order() {}
-}
-# fn main() {}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-08/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 7-8: Calling a function using a relative path
@@ -287,33 +216,7 @@ or even see which fruit they’ll get.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-mod back_of_house {
-    pub struct Breakfast {
-        pub toast: String,
-        seasonal_fruit: String,
-    }
-
-    impl Breakfast {
-        pub fn summer(toast: &str) -> Breakfast {
-            Breakfast {
-                toast: String::from(toast),
-                seasonal_fruit: String::from("peaches"),
-            }
-        }
-    }
-}
-
-pub fn eat_at_restaurant() {
-    // Order a breakfast in the summer with Rye toast
-    let mut meal = back_of_house::Breakfast::summer("Rye");
-    // Change our mind about what bread we'd like
-    meal.toast = String::from("Wheat");
-    println!("I'd like {} toast please", meal.toast);
-
-    // The next line won't compile if we uncomment it; we're not allowed
-    // to see or modify the seasonal fruit that comes with the meal
-    // meal.seasonal_fruit = String::from("blueberries");
-}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-09/src/lib.rs}}
 ```
 
 <span class="caption">Listing 7-9: A struct with some public fields and some
@@ -338,17 +241,7 @@ only need the `pub` before the `enum` keyword, as shown in Listing 7-10.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-mod back_of_house {
-    pub enum Appetizer {
-        Soup,
-        Salad,
-    }
-}
-
-pub fn eat_at_restaurant() {
-    let order1 = back_of_house::Appetizer::Soup;
-    let order2 = back_of_house::Appetizer::Salad;
-}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-10/src/lib.rs}}
 ```
 
 <span class="caption">Listing 7-10: Designating an enum as public makes all its
diff --git a/src/ch07-04-bringing-paths-into-scope-with-the-use-keyword.md b/src/ch07-04-bringing-paths-into-scope-with-the-use-keyword.md
index 05af46cb..94af9db4 100644
--- a/src/ch07-04-bringing-paths-into-scope-with-the-use-keyword.md
+++ b/src/ch07-04-bringing-paths-into-scope-with-the-use-keyword.md
@@ -16,20 +16,7 @@ scope of the `eat_at_restaurant` function so we only have to specify
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-mod front_of_house {
-    pub mod hosting {
-        pub fn add_to_waitlist() {}
-    }
-}
-
-use crate::front_of_house::hosting;
-
-pub fn eat_at_restaurant() {
-    hosting::add_to_waitlist();
-    hosting::add_to_waitlist();
-    hosting::add_to_waitlist();
-}
-# fn main() {}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-11/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 7-11: Bringing a module into scope with
@@ -48,20 +35,7 @@ Listing 7-11.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-mod front_of_house {
-    pub mod hosting {
-        pub fn add_to_waitlist() {}
-    }
-}
-
-use front_of_house::hosting;
-
-pub fn eat_at_restaurant() {
-    hosting::add_to_waitlist();
-    hosting::add_to_waitlist();
-    hosting::add_to_waitlist();
-}
-# fn main() {}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-12/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 7-12: Bringing a module into scope with `use` and
@@ -77,20 +51,7 @@ the `add_to_waitlist` function to achieve the same result, as in Listing 7-13.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-mod front_of_house {
-    pub mod hosting {
-        pub fn add_to_waitlist() {}
-    }
-}
-
-use crate::front_of_house::hosting::add_to_waitlist;
-
-pub fn eat_at_restaurant() {
-    add_to_waitlist();
-    add_to_waitlist();
-    add_to_waitlist();
-}
-# fn main() {}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-13/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 7-13: Bringing the `add_to_waitlist` function
@@ -111,12 +72,7 @@ crate.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::collections::HashMap;
-
-fn main() {
-    let mut map = HashMap::new();
-    map.insert(1, 2);
-}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-14/src/main.rs}}
 ```
 
 <span class="caption">Listing 7-14: Bringing `HashMap` into scope in an
@@ -133,18 +89,7 @@ different parent modules and how to refer to them.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-use std::fmt;
-use std::io;
-
-fn function1() -> fmt::Result {
-    // --snip--
-#     Ok(())
-}
-
-fn function2() -> io::Result<()> {
-    // --snip--
-#     Ok(())
-}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-15/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 7-15: Bringing two types with the same name into
@@ -165,18 +110,7 @@ code in Listing 7-15 by renaming one of the two `Result` types using `as`.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-use std::fmt::Result;
-use std::io::Result as IoResult;
-
-fn function1() -> Result {
-    // --snip--
-#     Ok(())
-}
-
-fn function2() -> IoResult<()> {
-    // --snip--
-#     Ok(())
-}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-16/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 7-16: Renaming a type when it’s brought into
@@ -202,20 +136,7 @@ changed to `pub use`.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-mod front_of_house {
-    pub mod hosting {
-        pub fn add_to_waitlist() {}
-    }
-}
-
-pub use crate::front_of_house::hosting;
-
-pub fn eat_at_restaurant() {
-    hosting::add_to_waitlist();
-    hosting::add_to_waitlist();
-    hosting::add_to_waitlist();
-}
-# fn main() {}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-17/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 7-17: Making a name available for any code to use
@@ -250,8 +171,7 @@ added this line to *Cargo.toml*:
 <span class="filename">Filename: Cargo.toml</span>
 
 ```toml
-[dependencies]
-rand = "0.5.5"
+{{#include ../listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.toml:9:}}
 ```
 
 Adding `rand` as a dependency in *Cargo.toml* tells Cargo to download the
@@ -265,10 +185,7 @@ Number”][rand]<!-- ignore --> section in Chapter 2, we brought the `Rng` trait
 into scope and called the `rand::thread_rng` function:
 
 ```rust,ignore
-use rand::Rng;
-fn main() {
-    let secret_number = rand::thread_rng().gen_range(1, 101);
-}
+{{#rustdoc_include ../listings/ch02-guessing-game-tutorial/listing-02-03/src/main.rs:ch07-04}}
 ```
 
 Members of the Rust community have made many packages available at
@@ -299,9 +216,7 @@ Listing 2-4 bring items from `std` into scope:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::io;
-use std::cmp::Ordering;
-// ---snip---
+{{#include ../listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/src/main.rs:here}}
 ```
 
 Instead, we can use nested paths to bring the same items into scope in one
@@ -312,8 +227,8 @@ differ, as shown in Listing 7-18.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::{cmp::Ordering, io};
-// ---snip---
+{{#include ../listings/ch07-managing-growing-projects/listing-07-18/src/main.rs:1}}
+// --snip--
 ```
 
 <span class="caption">Listing 7-18: Specifying a nested path to bring multiple
@@ -331,8 +246,7 @@ two `use` statements that share a subpath. For example, Listing 7-19 shows two
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-use std::io;
-use std::io::Write;
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-19/src/lib.rs}}
 ```
 
 <span class="caption">Listing 7-19: Two `use` statements where one is a subpath
@@ -345,7 +259,7 @@ the nested path, as shown in Listing 7-20.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-use std::io::{self, Write};
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-20/src/lib.rs}}
 ```
 
 <span class="caption">Listing 7-20: Combining the paths in Listing 7-19 into
diff --git a/src/ch07-05-separating-modules-into-different-files.md b/src/ch07-05-separating-modules-into-different-files.md
index 6b51859a..713ec881 100644
--- a/src/ch07-05-separating-modules-into-different-files.md
+++ b/src/ch07-05-separating-modules-into-different-files.md
@@ -13,15 +13,7 @@ crates whose crate root file is *src/main.rs*.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-mod front_of_house;
-
-pub use crate::front_of_house::hosting;
-
-pub fn eat_at_restaurant() {
-    hosting::add_to_waitlist();
-    hosting::add_to_waitlist();
-    hosting::add_to_waitlist();
-}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-21-and-22/src/lib.rs}}
 ```
 
 <span class="caption">Listing 7-21: Declaring the `front_of_house` module whose
@@ -33,9 +25,7 @@ And *src/front_of_house.rs* gets the definitions from the body of the
 <span class="filename">Filename: src/front_of_house.rs</span>
 
 ```rust
-pub mod hosting {
-    pub fn add_to_waitlist() {}
-}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/listing-07-21-and-22/src/front_of_house.rs}}
 ```
 
 <span class="caption">Listing 7-22: Definitions inside the `front_of_house`
@@ -50,7 +40,7 @@ declaration of the `hosting` module:
 <span class="filename">Filename: src/front_of_house.rs</span>
 
 ```
-pub mod hosting;
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/src/front_of_house.rs}}
 ```
 
 Then we create a *src/front_of_house* directory and a file
@@ -60,7 +50,7 @@ Then we create a *src/front_of_house* directory and a file
 <span class="filename">Filename: src/front_of_house/hosting.rs</span>
 
 ```
-pub fn add_to_waitlist() {}
+{{#rustdoc_include ../listings/ch07-managing-growing-projects/no-listing-02-extracting-hosting/src/front_of_house/hosting.rs}}
 ```
 
 The module tree remains the same, and the function calls in `eat_at_restaurant`
diff --git a/src/ch08-01-vectors.md b/src/ch08-01-vectors.md
index aaf15381..5f604cbc 100644
--- a/src/ch08-01-vectors.md
+++ b/src/ch08-01-vectors.md
@@ -12,7 +12,7 @@ To create a new, empty vector, we can call the `Vec::new` function, as shown in
 Listing 8-1.
 
 ```rust
-let v: Vec<i32> = Vec::new();
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-01/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-1: Creating a new, empty vector to hold values
@@ -35,7 +35,7 @@ that holds the values you give it. Listing 8-2 creates a new `Vec<i32>` that
 holds the values `1`, `2`, and `3`.
 
 ```rust
-let v = vec![1, 2, 3];
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-02/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-2: Creating a new vector containing
@@ -51,12 +51,7 @@ To create a vector and then add elements to it, we can use the `push` method,
 as shown in Listing 8-3.
 
 ```rust
-let mut v = Vec::new();
-
-v.push(5);
-v.push(6);
-v.push(7);
-v.push(8);
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-03/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-3: Using the `push` method to add values to a
@@ -73,12 +68,7 @@ Like any other `struct`, a vector is freed when it goes out of scope, as
 annotated in Listing 8-4.
 
 ```rust
-{
-    let v = vec![1, 2, 3, 4];
-
-    // do stuff with v
-
-} // <- v goes out of scope and is freed here
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-04/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-4: Showing where the vector and its elements
@@ -100,15 +90,7 @@ Listing 8-5 shows both methods of accessing a value in a vector, either with
 indexing syntax or the `get` method.
 
 ```rust
-let v = vec![1, 2, 3, 4, 5];
-
-let third: &i32 = &v[2];
-println!("The third element is {}", third);
-
-match v.get(2) {
-    Some(third) => println!("The third element is {}", third),
-    None => println!("There is no third element."),
-}
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-05/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-5: Using indexing syntax or the `get` method to
@@ -127,10 +109,7 @@ that holds five elements and then tries to access an element at index 100, as
 shown in Listing 8-6.
 
 ```rust,should_panic,panics
-let v = vec![1, 2, 3, 4, 5];
-
-let does_not_exist = &v[100];
-let does_not_exist = v.get(100);
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-06/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-6: Attempting to access the element at index
@@ -160,13 +139,7 @@ the first element in a vector and try to add an element to the end, which won’
 work.
 
 ```rust,ignore,does_not_compile
-let mut v = vec![1, 2, 3, 4, 5];
-
-let first = &v[0];
-
-v.push(6);
-
-println!("The first element is: {}", first);
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-07/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-7: Attempting to add an element to a vector
@@ -175,17 +148,7 @@ while holding a reference to an item</span>
 Compiling this code will result in this error:
 
 ```text
-error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
- --> src/main.rs:6:5
-  |
-4 |     let first = &v[0];
-  |                  - immutable borrow occurs here
-5 |
-6 |     v.push(6);
-  |     ^^^^^^^^^ mutable borrow occurs here
-7 |
-8 |     println!("The first element is: {}", first);
-  |                                          ----- immutable borrow later used here
+{{#include ../listings/ch08-common-collections/listing-08-07/output.txt}}
 ```
 
 The code in Listing 8-7 might look like it should work: why should a reference
@@ -208,10 +171,7 @@ all of the elements rather than use indices to access one at a time. Listing
 in a vector of `i32` values and print them.
 
 ```rust
-let v = vec![100, 32, 57];
-for i in &v {
-    println!("{}", i);
-}
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-08/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-8: Printing each element in a vector by
@@ -222,10 +182,7 @@ in order to make changes to all the elements. The `for` loop in Listing 8-9
 will add `50` to each element.
 
 ```rust
-let mut v = vec![100, 32, 57];
-for i in &mut v {
-    *i += 50;
-}
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-09/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-9: Iterating over mutable references to
@@ -253,17 +210,7 @@ that of the enum. Then we can create a vector that holds that enum and so,
 ultimately, holds different types. We’ve demonstrated this in Listing 8-10.
 
 ```rust
-enum SpreadsheetCell {
-    Int(i32),
-    Float(f64),
-    Text(String),
-}
-
-let row = vec![
-    SpreadsheetCell::Int(3),
-    SpreadsheetCell::Text(String::from("blue")),
-    SpreadsheetCell::Float(10.12),
-];
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-10/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-10: Defining an `enum` to store values of
diff --git a/src/ch08-02-strings.md b/src/ch08-02-strings.md
index f09ebbb9..bcee93eb 100644
--- a/src/ch08-02-strings.md
+++ b/src/ch08-02-strings.md
@@ -48,7 +48,7 @@ as well, starting with the `new` function to create a string, shown in Listing
 8-11.
 
 ```rust
-let mut s = String::new();
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-11/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-11: Creating a new, empty `String`</span>
@@ -60,12 +60,7 @@ that implements the `Display` trait, as string literals do. Listing 8-12 shows
 two examples.
 
 ```rust
-let data = "initial contents";
-
-let s = data.to_string();
-
-// the method also works on a literal directly:
-let s = "initial contents".to_string();
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-12/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-12: Using the `to_string` method to create a
@@ -78,7 +73,7 @@ literal. The code in Listing 8-13 is equivalent to the code from Listing 8-12
 that uses `to_string`.
 
 ```rust
-let s = String::from("initial contents");
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-13/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-13: Using the `String::from` function to create
@@ -93,17 +88,7 @@ Remember that strings are UTF-8 encoded, so we can include any properly encoded
 data in them, as shown in Listing 8-14.
 
 ```rust
-let hello = String::from("السلام عليكم");
-let hello = String::from("Dobrý den");
-let hello = String::from("Hello");
-let hello = String::from("שָׁלוֹם");
-let hello = String::from("नमस्ते");
-let hello = String::from("こんにちは");
-let hello = String::from("안녕하세요");
-let hello = String::from("你好");
-let hello = String::from("Olá");
-let hello = String::from("Здравствуйте");
-let hello = String::from("Hola");
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-14/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-14: Storing greetings in different languages in
@@ -123,8 +108,7 @@ We can grow a `String` by using the `push_str` method to append a string slice,
 as shown in Listing 8-15.
 
 ```rust
-let mut s = String::from("foo");
-s.push_str("bar");
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-15/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-15: Appending a string slice to a `String`
@@ -136,10 +120,7 @@ parameter. For example, the code in Listing 8-16 shows that it would be
 unfortunate if we weren’t able to use `s2` after appending its contents to `s1`.
 
 ```rust
-let mut s1 = String::from("foo");
-let s2 = "bar";
-s1.push_str(s2);
-println!("s2 is {}", s2);
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-16/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-16: Using a string slice after appending its
@@ -153,8 +134,7 @@ The `push` method takes a single character as a parameter and adds it to the
 the `push` method.
 
 ```rust
-let mut s = String::from("lo");
-s.push('l');
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-17/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-17: Adding one character to a `String` value
@@ -168,9 +148,7 @@ Often, you’ll want to combine two existing strings. One way is to use the `+`
 operator, as shown in Listing 8-18.
 
 ```rust
-let s1 = String::from("Hello, ");
-let s2 = String::from("world!");
-let s3 = s1 + &s2; // note s1 has been moved here and can no longer be used
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-18/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-18: Using the `+` operator to combine two
@@ -219,11 +197,7 @@ If we need to concatenate multiple strings, the behavior of the `+` operator
 gets unwieldy:
 
 ```rust
-let s1 = String::from("tic");
-let s2 = String::from("tac");
-let s3 = String::from("toe");
-
-let s = s1 + "-" + &s2 + "-" + &s3;
+{{#rustdoc_include ../listings/ch08-common-collections/no-listing-01-concat-multiple-strings/src/main.rs:here}}
 ```
 
 At this point, `s` will be `tic-tac-toe`. With all of the `+` and `"`
@@ -231,11 +205,7 @@ characters, it’s difficult to see what’s going on. For more complicated stri
 combining, we can use the `format!` macro:
 
 ```rust
-let s1 = String::from("tic");
-let s2 = String::from("tac");
-let s3 = String::from("toe");
-
-let s = format!("{}-{}-{}", s1, s2, s3);
+{{#rustdoc_include ../listings/ch08-common-collections/no-listing-02-format/src/main.rs:here}}
 ```
 
 This code also sets `s` to `tic-tac-toe`. The `format!` macro works in the same
@@ -251,8 +221,7 @@ if you try to access parts of a `String` using indexing syntax in Rust, you’ll
 get an error. Consider the invalid code in Listing 8-19.
 
 ```rust,ignore,does_not_compile
-let s1 = String::from("hello");
-let h = s1[0];
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-19/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-19: Attempting to use indexing syntax with a
@@ -261,13 +230,7 @@ String</span>
 This code will result in the following error:
 
 ```text
-error[E0277]: the trait bound `std::string::String: std::ops::Index<{integer}>` is not satisfied
- -->
-  |
-3 |     let h = s1[0];
-  |             ^^^^^ the type `std::string::String` cannot be indexed by `{integer}`
-  |
-  = help: the trait `std::ops::Index<{integer}>` is not implemented for `std::string::String`
+{{#include ../listings/ch08-common-collections/listing-08-19/output.txt}}
 ```
 
 The error and the note tell the story: Rust strings don’t support indexing. But
@@ -280,7 +243,7 @@ A `String` is a wrapper over a `Vec<u8>`. Let’s look at some of our properly
 encoded UTF-8 example strings from Listing 8-14. First, this one:
 
 ```rust
-let len = String::from("Hola").len();
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-14/src/main.rs:spanish}}
 ```
 
 In this case, `len` will be 4, which means the vector storing the string “Hola”
@@ -289,7 +252,7 @@ what about the following line? (Note that this string begins with the capital
 Cyrillic letter Ze, not the Arabic number 3.)
 
 ```rust
-let len = String::from("Здравствуйте").len();
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-14/src/main.rs:russian}}
 ```
 
 Asked how long the string is, you might say 12. However, Rust’s answer is 24:
@@ -380,7 +343,7 @@ What would happen if we used `&hello[0..1]`? The answer: Rust would panic at
 runtime in the same way as if an invalid index were accessed in a vector:
 
 ```text
-thread 'main' panicked at 'byte index 1 is not a char boundary; it is inside 'З' (bytes 0..2) of `Здравствуйте`', src/libcore/str/mod.rs:2188:4
+{{#include ../listings/ch08-common-collections/output-only-01-not-char-boundary/output.txt}}
 ```
 
 You should use ranges to create string slices with caution, because doing so
diff --git a/src/ch08-03-hash-maps.md b/src/ch08-03-hash-maps.md
index f140805d..d76b4445 100644
--- a/src/ch08-03-hash-maps.md
+++ b/src/ch08-03-hash-maps.md
@@ -25,12 +25,7 @@ Blue and Yellow. The Blue team starts with 10 points, and the Yellow team
 starts with 50.
 
 ```rust
-use std::collections::HashMap;
-
-let mut scores = HashMap::new();
-
-scores.insert(String::from("Blue"), 10);
-scores.insert(String::from("Yellow"), 50);
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-20/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-20: Creating a new hash map and inserting some
@@ -56,12 +51,7 @@ where “Blue” is paired with 10, and so forth. Then we could use the `collect
 method to turn that vector of tuples into a hash map, as shown in Listing 8-21.
 
 ```rust
-use std::collections::HashMap;
-
-let teams  = vec![String::from("Blue"), String::from("Yellow")];
-let initial_scores = vec![10, 50];
-
-let scores: HashMap<_, _> = teams.iter().zip(initial_scores.iter()).collect();
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-21/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-21: Creating a hash map from a list of teams
@@ -80,15 +70,7 @@ into the hash map. For owned values like `String`, the values will be moved and
 the hash map will be the owner of those values, as demonstrated in Listing 8-22.
 
 ```rust
-use std::collections::HashMap;
-
-let field_name = String::from("Favorite color");
-let field_value = String::from("Blue");
-
-let mut map = HashMap::new();
-map.insert(field_name, field_value);
-// field_name and field_value are invalid at this point, try using them and
-// see what compiler error you get!
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-22/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-22: Showing that keys and values are owned by
@@ -110,15 +92,7 @@ We can get a value out of the hash map by providing its key to the `get`
 method, as shown in Listing 8-23.
 
 ```rust
-use std::collections::HashMap;
-
-let mut scores = HashMap::new();
-
-scores.insert(String::from("Blue"), 10);
-scores.insert(String::from("Yellow"), 50);
-
-let team_name = String::from("Blue");
-let score = scores.get(&team_name);
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-23/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-23: Accessing the score for the Blue team
@@ -134,16 +108,7 @@ We can iterate over each key/value pair in a hash map in a similar manner as we
 do with vectors, using a `for` loop:
 
 ```rust
-use std::collections::HashMap;
-
-let mut scores = HashMap::new();
-
-scores.insert(String::from("Blue"), 10);
-scores.insert(String::from("Yellow"), 50);
-
-for (key, value) in &scores {
-    println!("{}: {}", key, value);
-}
+{{#rustdoc_include ../listings/ch08-common-collections/no-listing-03-iterate-over-hashmap/src/main.rs:here}}
 ```
 
 This code will print each pair in an arbitrary order:
@@ -173,14 +138,7 @@ only contain one key/value pair because we’re inserting the value for the Blue
 team’s key both times.
 
 ```rust
-use std::collections::HashMap;
-
-let mut scores = HashMap::new();
-
-scores.insert(String::from("Blue"), 10);
-scores.insert(String::from("Blue"), 25);
-
-println!("{:?}", scores);
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-24/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-24: Replacing a value stored with a particular
@@ -201,15 +159,7 @@ and the same for the Blue team. Using the `entry` API, the code looks like
 Listing 8-25.
 
 ```rust
-use std::collections::HashMap;
-
-let mut scores = HashMap::new();
-scores.insert(String::from("Blue"), 10);
-
-scores.entry(String::from("Yellow")).or_insert(50);
-scores.entry(String::from("Blue")).or_insert(50);
-
-println!("{:?}", scores);
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-25/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-25: Using the `entry` method to only insert if
@@ -237,18 +187,7 @@ seen that word. If it’s the first time we’ve seen a word, we’ll first inse
 the value 0.
 
 ```rust
-use std::collections::HashMap;
-
-let text = "hello world wonderful world";
-
-let mut map = HashMap::new();
-
-for word in text.split_whitespace() {
-    let count = map.entry(word).or_insert(0);
-    *count += 1;
-}
-
-println!("{:?}", map);
+{{#rustdoc_include ../listings/ch08-common-collections/listing-08-26/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 8-26: Counting occurrences of words using a hash
diff --git a/src/ch09-01-unrecoverable-errors-with-panic.md b/src/ch09-01-unrecoverable-errors-with-panic.md
index 454b7807..69ec2327 100644
--- a/src/ch09-01-unrecoverable-errors-with-panic.md
+++ b/src/ch09-01-unrecoverable-errors-with-panic.md
@@ -29,20 +29,13 @@ Let’s try calling `panic!` in a simple program:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,should_panic,panics
-fn main() {
-    panic!("crash and burn");
-}
+{{#rustdoc_include ../listings/ch09-error-handling/no-listing-01-panic/src/main.rs}}
 ```
 
 When you run the program, you’ll see something like this:
 
 ```text
-$ cargo run
-   Compiling panic v0.1.0 (file:///projects/panic)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.25s
-     Running `target/debug/panic`
-thread 'main' panicked at 'crash and burn', src/main.rs:2:5
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
+{{#include ../listings/ch09-error-handling/no-listing-01-panic/output.txt}}
 ```
 
 The call to `panic!` causes the error message contained in the last two lines.
@@ -69,11 +62,7 @@ element by index in a vector.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,should_panic,panics
-fn main() {
-    let v = vec![1, 2, 3];
-
-    v[99];
-}
+{{#rustdoc_include ../listings/ch09-error-handling/listing-09-01/src/main.rs}}
 ```
 
 <span class="caption">Listing 9-1: Attempting to access an element beyond the
@@ -98,12 +87,7 @@ element at an index that doesn’t exist, Rust will stop execution and refuse to
 continue. Let’s try it and see:
 
 ```text
-$ cargo run
-   Compiling panic v0.1.0 (file:///projects/panic)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.27s
-     Running `target/debug/panic`
-thread 'main' panicked at 'index out of bounds: the len is 3 but the index is 99', libcore/slice/mod.rs:2448:10
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
+{{#include ../listings/ch09-error-handling/listing-09-01/output.txt}}
 ```
 
 This error points at a file we didn’t write, *libcore/slice/mod.rs*. That’s the
@@ -123,53 +107,63 @@ library code, or crates that you’re using. Let’s try getting a backtrace by
 setting the `RUST_BACKTRACE` environment variable to any value except 0.
 Listing 9-2 shows output similar to what you’ll see.
 
+<!-- manual-regeneration
+cd listings/ch09-error-handling/listing-09-01
+RUST_BACKTRACE=1 cargo run
+check the backtrace number mentioned in the text below the listing
+-->
+
 ```text
 $ RUST_BACKTRACE=1 cargo run
-    Finished dev [unoptimized + debuginfo] target(s) in 0.00s
-     Running `target/debug/panic`
-thread 'main' panicked at 'index out of bounds: the len is 3 but the index is 99', libcore/slice/mod.rs:2448:10
+thread 'main' panicked at 'index out of bounds: the len is 3 but the index is 99', /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/slice/mod.rs:2681:10
 stack backtrace:
-   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
-             at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
-   1: std::sys_common::backtrace::print
-             at libstd/sys_common/backtrace.rs:71
-             at libstd/sys_common/backtrace.rs:59
-   2: std::panicking::default_hook::{{closure}}
-             at libstd/panicking.rs:211
-   3: std::panicking::default_hook
-             at libstd/panicking.rs:227
-   4: <std::panicking::begin_panic::PanicPayload<A> as core::panic::BoxMeUp>::get
-             at libstd/panicking.rs:476
-   5: std::panicking::continue_panic_fmt
-             at libstd/panicking.rs:390
-   6: std::panicking::try::do_call
-             at libstd/panicking.rs:325
-   7: core::ptr::drop_in_place
-             at libcore/panicking.rs:77
-   8: core::ptr::drop_in_place
-             at libcore/panicking.rs:59
-   9: <usize as core::slice::SliceIndex<[T]>>::index
-             at libcore/slice/mod.rs:2448
-  10: core::slice::<impl core::ops::index::Index<I> for [T]>::index
-             at libcore/slice/mod.rs:2316
-  11: <alloc::vec::Vec<T> as core::ops::index::Index<I>>::index
-             at liballoc/vec.rs:1653
-  12: panic::main
+   0: backtrace::backtrace::libunwind::trace
+             at /Users/vsts/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
+   1: backtrace::backtrace::trace_unsynchronized
+             at /Users/vsts/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
+   2: std::sys_common::backtrace::_print
+             at src/libstd/sys_common/backtrace.rs:47
+   3: std::sys_common::backtrace::print
+             at src/libstd/sys_common/backtrace.rs:36
+   4: std::panicking::default_hook::{{closure}}
+             at src/libstd/panicking.rs:200
+   5: std::panicking::default_hook
+             at src/libstd/panicking.rs:214
+   6: std::panicking::rust_panic_with_hook
+             at src/libstd/panicking.rs:477
+   7: std::panicking::continue_panic_fmt
+             at src/libstd/panicking.rs:384
+   8: rust_begin_unwind
+             at src/libstd/panicking.rs:311
+   9: core::panicking::panic_fmt
+             at src/libcore/panicking.rs:85
+  10: core::panicking::panic_bounds_check
+             at src/libcore/panicking.rs:61
+  11: <usize as core::slice::SliceIndex<[T]>>::index
+             at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/slice/mod.rs:2681
+  12: core::slice::<impl core::ops::index::Index<I> for [T]>::index
+             at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/slice/mod.rs:2538
+  13: <alloc::vec::Vec<T> as core::ops::index::Index<I>>::index
+             at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/liballoc/vec.rs:1756
+  14: panic::main
              at src/main.rs:4
-  13: std::rt::lang_start::{{closure}}
-             at libstd/rt.rs:74
-  14: std::panicking::try::do_call
-             at libstd/rt.rs:59
-             at libstd/panicking.rs:310
-  15: macho_symbol_search
-             at libpanic_unwind/lib.rs:102
-  16: std::alloc::default_alloc_error_hook
-             at libstd/panicking.rs:289
-             at libstd/panic.rs:392
-             at libstd/rt.rs:58
-  17: std::rt::lang_start
-             at libstd/rt.rs:74
-  18: panic::main
+  15: std::rt::lang_start::{{closure}}
+             at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/rt.rs:64
+  16: std::rt::lang_start_internal::{{closure}}
+             at src/libstd/rt.rs:49
+  17: std::panicking::try::do_call
+             at src/libstd/panicking.rs:296
+  18: __rust_maybe_catch_panic
+             at src/libpanic_unwind/lib.rs:82
+  19: std::panicking::try
+             at src/libstd/panicking.rs:275
+  20: std::panic::catch_unwind
+             at src/libstd/panic.rs:394
+  21: std::rt::lang_start_internal
+             at src/libstd/rt.rs:48
+  22: std::rt::lang_start
+             at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/rt.rs:64
+  23: panic::main
 ```
 
 <span class="caption">Listing 9-2: The backtrace generated by a call to
@@ -181,7 +175,7 @@ information, debug symbols must be enabled. Debug symbols are enabled by
 default when using `cargo build` or `cargo run` without the `--release` flag,
 as we have here.
 
-In the output in Listing 9-2, line 12 of the backtrace points to the line in
+In the output in Listing 9-2, line 14 of the backtrace points to the line in
 our project that’s causing the problem: line 4 of *src/main.rs*. If we don’t
 want our program to panic, the location pointed to by the first line mentioning
 a file we wrote is where we should start investigating. In Listing 9-1, where
diff --git a/src/ch09-02-recoverable-errors-with-result.md b/src/ch09-02-recoverable-errors-with-result.md
index 8461e2bf..26f9e512 100644
--- a/src/ch09-02-recoverable-errors-with-result.md
+++ b/src/ch09-02-recoverable-errors-with-result.md
@@ -34,11 +34,7 @@ fail. In Listing 9-3 we try to open a file.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::fs::File;
-
-fn main() {
-    let f = File::open("hello.txt");
-}
+{{#rustdoc_include ../listings/ch09-error-handling/listing-09-03/src/main.rs}}
 ```
 
 <span class="caption">Listing 9-3: Opening a file</span>
@@ -52,21 +48,13 @@ type of `f` *is*. Let’s try it! We know that the return type of `File::open`
 isn’t of type `u32`, so let’s change the `let f` statement to this:
 
 ```rust,ignore,does_not_compile
-let f: u32 = File::open("hello.txt");
+{{#rustdoc_include ../listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/src/main.rs:here}}
 ```
 
 Attempting to compile now gives us the following output:
 
 ```text
-error[E0308]: mismatched types
- --> src/main.rs:4:18
-  |
-4 |     let f: u32 = File::open("hello.txt");
-  |                  ^^^^^^^^^^^^^^^^^^^^^^^ expected u32, found enum
-`std::result::Result`
-  |
-  = note: expected type `u32`
-             found type `std::result::Result<std::fs::File, std::io::Error>`
+{{#include ../listings/ch09-error-handling/no-listing-02-ask-compiler-for-type/output.txt}}
 ```
 
 This tells us the return type of the `File::open` function is a `Result<T, E>`.
@@ -95,18 +83,7 @@ Chapter 6.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,should_panic
-use std::fs::File;
-
-fn main() {
-    let f = File::open("hello.txt");
-
-    let f = match f {
-        Ok(file) => file,
-        Err(error) => {
-            panic!("Problem opening the file: {:?}", error)
-        },
-    };
-}
+{{#rustdoc_include ../listings/ch09-error-handling/listing-09-04/src/main.rs}}
 ```
 
 <span class="caption">Listing 9-4: Using a `match` expression to handle the
@@ -127,8 +104,7 @@ there’s no file named *hello.txt* in our current directory and we run this
 code, we’ll see the following output from the `panic!` macro:
 
 ```text
-thread 'main' panicked at 'Problem opening the file: Error { repr:
-Os { code: 2, message: "No such file or directory" } }', src/main.rs:9:12
+{{#include ../listings/ch09-error-handling/listing-09-04/output.txt}}
 ```
 
 As usual, this output tells us exactly what has gone wrong.
@@ -149,23 +125,7 @@ at Listing 9-5, which adds an inner `match` expression.
 tests to fail lol -->
 
 ```rust,ignore
-use std::fs::File;
-use std::io::ErrorKind;
-
-fn main() {
-    let f = File::open("hello.txt");
-
-    let f = match f {
-        Ok(file) => file,
-        Err(error) => match error.kind() {
-            ErrorKind::NotFound => match File::create("hello.txt") {
-                Ok(fc) => fc,
-                Err(e) => panic!("Problem creating the file: {:?}", e),
-            },
-            other_error => panic!("Problem opening the file: {:?}", other_error),
-        },
-    };
-}
+{{#rustdoc_include ../listings/ch09-error-handling/listing-09-05/src/main.rs}}
 ```
 
 <span class="caption">Listing 9-5: Handling different kinds of errors in
@@ -195,20 +155,7 @@ E>` type has many methods that accept a closure and are implemented using
 more seasoned Rustacean might write this code instead of Listing 9-5:
 
 ```rust,ignore
-use std::fs::File;
-use std::io::ErrorKind;
-
-fn main() {
-    let f = File::open("hello.txt").unwrap_or_else(|error| {
-        if error.kind() == ErrorKind::NotFound {
-            File::create("hello.txt").unwrap_or_else(|error| {
-                panic!("Problem creating the file: {:?}", error);
-            })
-        } else {
-            panic!("Problem opening the file: {:?}", error);
-        }
-    });
-}
+{{#rustdoc_include ../listings/ch09-error-handling/no-listing-03-closures/src/main.rs}}
 ```
 
 Although this code has the same behavior as Listing 9-5, it doesn’t contain any
@@ -230,11 +177,7 @@ call the `panic!` macro for us. Here is an example of `unwrap` in action:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,should_panic
-use std::fs::File;
-
-fn main() {
-    let f = File::open("hello.txt").unwrap();
-}
+{{#rustdoc_include ../listings/ch09-error-handling/no-listing-04-unwrap/src/main.rs}}
 ```
 
 If we run this code without a *hello.txt* file, we’ll see an error message from
@@ -254,11 +197,7 @@ panic easier. The syntax of `expect` looks like this:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,should_panic
-use std::fs::File;
-
-fn main() {
-    let f = File::open("hello.txt").expect("Failed to open hello.txt");
-}
+{{#rustdoc_include ../listings/ch09-error-handling/no-listing-05-expect/src/main.rs}}
 ```
 
 We use `expect` in the same way as `unwrap`: to return the file handle or call
@@ -292,26 +231,12 @@ to the code that called this function.
 
 <span class="filename">Filename: src/main.rs</span>
 
+<!-- Deliberately not using rustdoc_include here; the `main` function in the
+file panics. We do want to include it for reader experimentation purposes, but
+don't want to include it for rustdoc testing purposes. -->
+
 ```rust
-use std::io;
-use std::io::Read;
-use std::fs::File;
-
-fn read_username_from_file() -> Result<String, io::Error> {
-    let f = File::open("hello.txt");
-
-    let mut f = match f {
-        Ok(file) => file,
-        Err(e) => return Err(e),
-    };
-
-    let mut s = String::new();
-
-    match f.read_to_string(&mut s) {
-        Ok(_) => Ok(s),
-        Err(e) => Err(e),
-    }
-}
+{{#include ../listings/ch09-error-handling/listing-09-06/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 9-6: A function that returns errors to the
@@ -372,17 +297,12 @@ same functionality as it had in Listing 9-6, but this implementation uses the
 
 <span class="filename">Filename: src/main.rs</span>
 
-```rust
-use std::io;
-use std::io::Read;
-use std::fs::File;
+<!-- Deliberately not using rustdoc_include here; the `main` function in the
+file panics. We do want to include it for reader experimentation purposes, but
+don't want to include it for rustdoc testing purposes. -->
 
-fn read_username_from_file() -> Result<String, io::Error> {
-    let mut f = File::open("hello.txt")?;
-    let mut s = String::new();
-    f.read_to_string(&mut s)?;
-    Ok(s)
-}
+```rust
+{{#include ../listings/ch09-error-handling/listing-09-07/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 9-7: A function that returns errors to the
@@ -420,18 +340,12 @@ method calls immediately after the `?`, as shown in Listing 9-8.
 
 <span class="filename">Filename: src/main.rs</span>
 
+<!-- Deliberately not using rustdoc_include here; the `main` function in the
+file panics. We do want to include it for reader experimentation purposes, but
+don't want to include it for rustdoc testing purposes. -->
+
 ```rust
-use std::io;
-use std::io::Read;
-use std::fs::File;
-
-fn read_username_from_file() -> Result<String, io::Error> {
-    let mut s = String::new();
-
-    File::open("hello.txt")?.read_to_string(&mut s)?;
-
-    Ok(s)
-}
+{{#include ../listings/ch09-error-handling/listing-09-08/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 9-8: Chaining method calls after the `?`
@@ -451,13 +365,12 @@ there’s a way to make this even shorter.
 
 <span class="filename">Filename: src/main.rs</span>
 
-```rust
-use std::io;
-use std::fs;
+<!-- Deliberately not using rustdoc_include here; the `main` function in the
+file panics. We do want to include it for reader experimentation purposes, but
+don't want to include it for rustdoc testing purposes. -->
 
-fn read_username_from_file() -> Result<String, io::Error> {
-    fs::read_to_string("hello.txt")
-}
+```rust
+{{#include ../listings/ch09-error-handling/listing-09-09/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 9-9: Using `fs::read_to_string` instead of
@@ -482,26 +395,13 @@ Let’s look at what happens if we use the `?` operator in the `main` function,
 which you’ll recall has a return type of `()`:
 
 ```rust,ignore,does_not_compile
-use std::fs::File;
-
-fn main() {
-    let f = File::open("hello.txt")?;
-}
+{{#rustdoc_include ../listings/ch09-error-handling/no-listing-06-question-mark-in-main/src/main.rs}}
 ```
 
 When we compile this code, we get the following error message:
 
 ```text
-error[E0277]: the `?` operator can only be used in a function that returns
-`Result` or `Option` (or another type that implements `std::ops::Try`)
- --> src/main.rs:4:13
-  |
-4 |     let f = File::open("hello.txt")?;
-  |             ^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a
-  function that returns `()`
-  |
-  = help: the trait `std::ops::Try` is not implemented for `()`
-  = note: required by `std::ops::Try::from_error`
+{{#include ../listings/ch09-error-handling/no-listing-06-question-mark-in-main/output.txt}}
 ```
 
 This error points out that we’re only allowed to use the `?` operator in a
@@ -519,14 +419,7 @@ type must be. One valid return type for main is `()`, and conveniently, another
 valid return type is `Result<T, E>`, as shown here:
 
 ```rust,ignore
-use std::error::Error;
-use std::fs::File;
-
-fn main() -> Result<(), Box<dyn Error>> {
-    let f = File::open("hello.txt")?;
-
-    Ok(())
-}
+{{#rustdoc_include ../listings/ch09-error-handling/no-listing-07-main-returning-result/src/main.rs}}
 ```
 
 The `Box<dyn Error>` type is called a trait object, which we’ll talk about in
diff --git a/src/ch09-03-to-panic-or-not-to-panic.md b/src/ch09-03-to-panic-or-not-to-panic.md
index a8f6965b..e5af81d0 100644
--- a/src/ch09-03-to-panic-or-not-to-panic.md
+++ b/src/ch09-03-to-panic-or-not-to-panic.md
@@ -48,9 +48,7 @@ have an `Err` variant, it’s perfectly acceptable to call `unwrap`. Here’s an
 example:
 
 ```rust
-use std::net::IpAddr;
-
-let home: IpAddr = "127.0.0.1".parse().unwrap();
+{{#rustdoc_include ../listings/ch09-error-handling/no-listing-08-unwrap-that-cant-fail/src/main.rs:here}}
 ```
 
 We’re creating an `IpAddr` instance by parsing a hardcoded string. We can see
@@ -133,22 +131,7 @@ One way to do this would be to parse the guess as an `i32` instead of only a
 number being in range, like so:
 
 ```rust,ignore
-loop {
-    // --snip--
-
-    let guess: i32 = match guess.trim().parse() {
-        Ok(num) => num,
-        Err(_) => continue,
-    };
-
-    if guess < 1 || guess > 100 {
-        println!("The secret number will be between 1 and 100.");
-        continue;
-    }
-
-    match guess.cmp(&secret_number) {
-    // --snip--
-}
+{{#rustdoc_include ../listings/ch09-error-handling/no-listing-09-guess-out-of-range/src/main.rs:here}}
 ```
 
 The `if` expression checks whether our value is out of range, tells the user
@@ -169,26 +152,13 @@ confidently use the values they receive. Listing 9-10 shows one way to define a
 `Guess` type that will only create an instance of `Guess` if the `new` function
 receives a value between 1 and 100.
 
+<!-- Deliberately not using rustdoc_include here; the `main` function in the
+file requires the `rand` crate. We do want to include it for reader
+experimentation purposes, but don't want to include it for rustdoc testing
+purposes. -->
+
 ```rust
-pub struct Guess {
-    value: i32,
-}
-
-impl Guess {
-    pub fn new(value: i32) -> Guess {
-        if value < 1 || value > 100 {
-            panic!("Guess value must be between 1 and 100, got {}.", value);
-        }
-
-        Guess {
-            value
-        }
-    }
-
-    pub fn value(&self) -> i32 {
-        self.value
-    }
-}
+{{#include ../listings/ch09-error-handling/listing-09-10/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 9-10: A `Guess` type that will only continue with
diff --git a/src/ch10-00-generics.md b/src/ch10-00-generics.md
index b411210b..032f4374 100644
--- a/src/ch10-00-generics.md
+++ b/src/ch10-00-generics.md
@@ -41,20 +41,7 @@ Listing 10-1.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let number_list = vec![34, 50, 25, 100, 65];
-
-    let mut largest = number_list[0];
-
-    for number in number_list {
-        if number > largest {
-            largest = number;
-        }
-    }
-
-    println!("The largest number is {}", largest);
-#  assert_eq!(largest, 100);
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-1: Code to find the largest number in a list
@@ -76,31 +63,7 @@ program, as shown in Listing 10-2.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let number_list = vec![34, 50, 25, 100, 65];
-
-    let mut largest = number_list[0];
-
-    for number in number_list {
-        if number > largest {
-            largest = number;
-        }
-    }
-
-    println!("The largest number is {}", largest);
-
-    let number_list = vec![102, 34, 6000, 89, 54, 2, 43, 8];
-
-    let mut largest = number_list[0];
-
-    for number in number_list {
-        if number > largest {
-            largest = number;
-        }
-    }
-
-    println!("The largest number is {}", largest);
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/src/main.rs}}
 ```
 
 <span class="caption">Listing 10-2: Code to find the largest number in *two*
@@ -122,31 +85,7 @@ number in two different lists.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn largest(list: &[i32]) -> i32 {
-    let mut largest = list[0];
-
-    for &item in list {
-        if item > largest {
-            largest = item;
-        }
-    }
-
-    largest
-}
-
-fn main() {
-    let number_list = vec![34, 50, 25, 100, 65];
-
-    let result = largest(&number_list);
-    println!("The largest number is {}", result);
-#    assert_eq!(result, 100);
-
-    let number_list = vec![102, 34, 6000, 89, 54, 2, 43, 8];
-
-    let result = largest(&number_list);
-    println!("The largest number is {}", result);
-#    assert_eq!(result, 6000);
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-3: Abstracted code to find the largest number
diff --git a/src/ch10-01-syntax.md b/src/ch10-01-syntax.md
index f69165e2..3d86ebfa 100644
--- a/src/ch10-01-syntax.md
+++ b/src/ch10-01-syntax.md
@@ -18,43 +18,7 @@ both find the largest value in a slice.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn largest_i32(list: &[i32]) -> i32 {
-    let mut largest = list[0];
-
-    for &item in list.iter() {
-        if item > largest {
-            largest = item;
-        }
-    }
-
-    largest
-}
-
-fn largest_char(list: &[char]) -> char {
-    let mut largest = list[0];
-
-    for &item in list.iter() {
-        if item > largest {
-            largest = item;
-        }
-    }
-
-    largest
-}
-
-fn main() {
-    let number_list = vec![34, 50, 25, 100, 65];
-
-    let result = largest_i32(&number_list);
-    println!("The largest number is {}", result);
-#    assert_eq!(result, 100);
-
-    let char_list = vec!['y', 'm', 'a', 'q'];
-
-    let result = largest_char(&char_list);
-    println!("The largest char is {}", result);
-#    assert_eq!(result, 'y');
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-4: Two functions that differ only in their
@@ -95,29 +59,7 @@ compile yet, but we’ll fix it later in this chapter.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn largest<T>(list: &[T]) -> T {
-    let mut largest = list[0];
-
-    for &item in list.iter() {
-        if item > largest {
-            largest = item;
-        }
-    }
-
-    largest
-}
-
-fn main() {
-    let number_list = vec![34, 50, 25, 100, 65];
-
-    let result = largest(&number_list);
-    println!("The largest number is {}", result);
-
-    let char_list = vec!['y', 'm', 'a', 'q'];
-
-    let result = largest(&char_list);
-    println!("The largest char is {}", result);
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/src/main.rs}}
 ```
 
 <span class="caption">Listing 10-5: A definition of the `largest` function that
@@ -126,13 +68,7 @@ uses generic type parameters but doesn’t compile yet</span>
 If we compile this code right now, we’ll get this error:
 
 ```text
-error[E0369]: binary operation `>` cannot be applied to type `T`
- --> src/main.rs:5:12
-  |
-5 |         if item > largest {
-  |            ^^^^^^^^^^^^^^
-  |
-  = note: an implementation of `std::cmp::PartialOrd` might be missing for `T`
+{{#include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/output.txt}}
 ```
 
 The note mentions `std::cmp::PartialOrd`, which is a *trait*. We’ll talk about
@@ -155,15 +91,7 @@ struct to hold `x` and `y` coordinate values of any type.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-struct Point<T> {
-    x: T,
-    y: T,
-}
-
-fn main() {
-    let integer = Point { x: 5, y: 10 };
-    let float = Point { x: 1.0, y: 4.0 };
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-06/src/main.rs}}
 ```
 
 <span class="caption">Listing 10-6: A `Point<T>` struct that holds `x` and `y`
@@ -184,14 +112,7 @@ Listing 10-7, our code won’t compile.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-struct Point<T> {
-    x: T,
-    y: T,
-}
-
-fn main() {
-    let wont_work = Point { x: 5, y: 4.0 };
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/src/main.rs}}
 ```
 
 <span class="caption">Listing 10-7: The fields `x` and `y` must be the same
@@ -203,15 +124,7 @@ compiler know that the generic type `T` will be an integer for this instance of
 same type as `x`, we’ll get a type mismatch error like this:
 
 ```text
-error[E0308]: mismatched types
- --> src/main.rs:7:38
-  |
-7 |     let wont_work = Point { x: 5, y: 4.0 };
-  |                                      ^^^ expected integer, found
-floating-point number
-  |
-  = note: expected type `{integer}`
-             found type `{float}`
+{{#include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/output.txt}}
 ```
 
 To define a `Point` struct where `x` and `y` are both generics but could have
@@ -222,16 +135,7 @@ Listing 10-8, we can change the definition of `Point` to be generic over types
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-struct Point<T, U> {
-    x: T,
-    y: U,
-}
-
-fn main() {
-    let both_integer = Point { x: 5, y: 10 };
-    let both_float = Point { x: 1.0, y: 4.0 };
-    let integer_and_float = Point { x: 5, y: 4.0 };
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-08/src/main.rs}}
 ```
 
 <span class="caption">Listing 10-8: A `Point<T, U>` generic over two types so
@@ -294,22 +198,7 @@ struct we defined in Listing 10-6 with a method named `x` implemented on it.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-struct Point<T> {
-    x: T,
-    y: T,
-}
-
-impl<T> Point<T> {
-    fn x(&self) -> &T {
-        &self.x
-    }
-}
-
-fn main() {
-    let p = Point { x: 5, y: 10 };
-
-    println!("p.x = {}", p.x());
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-09/src/main.rs}}
 ```
 
 <span class="caption">Listing 10-9: Implementing a method named `x` on the
@@ -328,17 +217,10 @@ We could, for example, implement methods only on `Point<f32>` instances rather
 than on `Point<T>` instances with any generic type. In Listing 10-10 we use the
 concrete type `f32`, meaning we don’t declare any types after `impl`.
 
+<span class="filename">Filename: src/main.rs</span>
+
 ```rust
-# struct Point<T> {
-#     x: T,
-#     y: T,
-# }
-#
-impl Point<f32> {
-    fn distance_from_origin(&self) -> f32 {
-        (self.x.powi(2) + self.y.powi(2)).sqrt()
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-10: An `impl` block that only applies to a
@@ -361,28 +243,7 @@ value from the passed-in `Point` (of type `W`).
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-struct Point<T, U> {
-    x: T,
-    y: U,
-}
-
-impl<T, U> Point<T, U> {
-    fn mixup<V, W>(self, other: Point<V, W>) -> Point<T, W> {
-        Point {
-            x: self.x,
-            y: other.y,
-        }
-    }
-}
-
-fn main() {
-    let p1 = Point { x: 5, y: 10.4 };
-    let p2 = Point { x: "Hello", y: 'c'};
-
-    let p3 = p1.mixup(p2);
-
-    println!("p3.x = {}, p3.y = {}", p3.x, p3.y);
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-11/src/main.rs}}
 ```
 
 <span class="caption">Listing 10-11: A method that uses different generic types
diff --git a/src/ch10-02-traits.md b/src/ch10-02-traits.md
index 19e873bb..0e01361d 100644
--- a/src/ch10-02-traits.md
+++ b/src/ch10-02-traits.md
@@ -30,9 +30,7 @@ need a summary from each type, and we need to request that summary by calling a
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub trait Summary {
-    fn summarize(&self) -> String;
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-12/src/lib.rs}}
 ```
 
 <span class="caption">Listing 10-12: A `Summary` trait that consists of the
@@ -65,35 +63,7 @@ already limited to 280 characters.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub trait Summary {
-#     fn summarize(&self) -> String;
-# }
-#
-pub struct NewsArticle {
-    pub headline: String,
-    pub location: String,
-    pub author: String,
-    pub content: String,
-}
-
-impl Summary for NewsArticle {
-    fn summarize(&self) -> String {
-        format!("{}, by {} ({})", self.headline, self.author, self.location)
-    }
-}
-
-pub struct Tweet {
-    pub username: String,
-    pub content: String,
-    pub reply: bool,
-    pub retweet: bool,
-}
-
-impl Summary for Tweet {
-    fn summarize(&self) -> String {
-        format!("{}: {}", self.username, self.content)
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-13/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 10-13: Implementing the `Summary` trait on the
@@ -112,14 +82,7 @@ After implementing the trait, we can call the methods on instances of
 `NewsArticle` and `Tweet` in the same way we call regular methods, like this:
 
 ```rust,ignore
-let tweet = Tweet {
-    username: String::from("horse_ebooks"),
-    content: String::from("of course, as you probably already know, people"),
-    reply: false,
-    retweet: false,
-};
-
-println!("1 new tweet: {}", tweet.summarize());
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/main.rs:here}}
 ```
 
 This code prints `1 new tweet: horse_ebooks: of course, as you probably already
@@ -168,11 +131,7 @@ in Listing 10-12.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub trait Summary {
-    fn summarize(&self) -> String {
-        String::from("(Read more...)")
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-14/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 10-14: Definition of a `Summary` trait with a
@@ -188,15 +147,7 @@ directly, we’ve provided a default implementation and specified that
 the `summarize` method on an instance of `NewsArticle`, like this:
 
 ```rust,ignore
-let article = NewsArticle {
-    headline: String::from("Penguins win the Stanley Cup Championship!"),
-    location: String::from("Pittsburgh, PA, USA"),
-    author: String::from("Iceburgh"),
-    content: String::from("The Pittsburgh Penguins once again are the best
-    hockey team in the NHL."),
-};
-
-println!("New article available! {}", article.summarize());
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-02-calling-default-impl/src/main.rs:here}}
 ```
 
 This code prints `New article available! (Read more...)`.
@@ -216,24 +167,14 @@ a small part of it. For example, we could define the `Summary` trait to have a
 `summarize_author` method:
 
 ```rust
-pub trait Summary {
-    fn summarize_author(&self) -> String;
-
-    fn summarize(&self) -> String {
-        format!("(Read more from {}...)", self.summarize_author())
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/lib.rs:here}}
 ```
 
 To use this version of `Summary`, we only need to define `summarize_author`
 when we implement the trait on a type:
 
 ```rust,ignore
-impl Summary for Tweet {
-    fn summarize_author(&self) -> String {
-        format!("@{}", self.username)
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/lib.rs:impl}}
 ```
 
 After we define `summarize_author`, we can call `summarize` on instances of the
@@ -243,14 +184,7 @@ definition of `summarize_author` that we’ve provided. Because we’ve implemen
 `summarize` method without requiring us to write any more code.
 
 ```rust,ignore
-let tweet = Tweet {
-    username: String::from("horse_ebooks"),
-    content: String::from("of course, as you probably already know, people"),
-    reply: false,
-    retweet: false,
-};
-
-println!("1 new tweet: {}", tweet.summarize());
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/main.rs:here}}
 ```
 
 This code prints `1 new tweet: (Read more from @horse_ebooks...)`.
@@ -270,9 +204,7 @@ implements the `Summary` trait. To do this, we can use the `impl Trait`
 syntax, like this:
 
 ```rust,ignore
-pub fn notify(item: impl Summary) {
-    println!("Breaking news! {}", item.summarize());
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-04-traits-as-parameters/src/lib.rs:here}}
 ```
 
 Instead of a concrete type for the `item` parameter, we specify the `impl`
@@ -373,14 +305,7 @@ We can also use the `impl Trait` syntax in the return position to return a
 value of some type that implements a trait, as shown here:
 
 ```rust,ignore
-fn returns_summarizable() -> impl Summary {
-    Tweet {
-        username: String::from("horse_ebooks"),
-        content: String::from("of course, as you probably already know, people"),
-        reply: false,
-        retweet: false,
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-05-returning-impl-trait/src/lib.rs:here}}
 ```
 
 By using `impl Summary` for the return type, we specify that the
@@ -400,24 +325,7 @@ example, this code that returns either a `NewsArticle` or a `Tweet` with the
 return type specified as `impl Summary` wouldn’t work:
 
 ```rust,ignore,does_not_compile
-fn returns_summarizable(switch: bool) -> impl Summary {
-    if switch {
-        NewsArticle {
-            headline: String::from("Penguins win the Stanley Cup Championship!"),
-            location: String::from("Pittsburgh, PA, USA"),
-            author: String::from("Iceburgh"),
-            content: String::from("The Pittsburgh Penguins once again are the best
-            hockey team in the NHL."),
-        }
-    } else {
-        Tweet {
-            username: String::from("horse_ebooks"),
-            content: String::from("of course, as you probably already know, people"),
-            reply: false,
-            retweet: false,
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-06-impl-trait-returns-one-type/src/lib.rs:here}}
 ```
 
 Returning either a `NewsArticle` or a `Tweet` isn’t allowed due to restrictions
@@ -435,13 +343,7 @@ the `largest` function that uses a generic type parameter! Last time we tried
 to run that code, we received this error:
 
 ```text
-error[E0369]: binary operation `>` cannot be applied to type `T`
- --> src/main.rs:5:12
-  |
-5 |         if item > largest {
-  |            ^^^^^^^^^^^^^^
-  |
-  = note: an implementation of `std::cmp::PartialOrd` might be missing for `T`
+{{#include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/output.txt}}
 ```
 
 In the body of `largest` we wanted to compare two values of type `T` using the
@@ -453,29 +355,13 @@ into scope because it’s in the prelude. Change the signature of `largest` to
 look like this:
 
 ```rust,ignore
-fn largest<T: PartialOrd>(list: &[T]) -> T {
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/src/main.rs:here}}
 ```
 
 This time when we compile the code, we get a different set of errors:
 
 ```text
-error[E0508]: cannot move out of type `[T]`, a non-copy slice
- --> src/main.rs:2:23
-  |
-2 |     let mut largest = list[0];
-  |                       ^^^^^^^
-  |                       |
-  |                       cannot move out of here
-  |                       help: consider using a reference instead: `&list[0]`
-
-error[E0507]: cannot move out of borrowed content
- --> src/main.rs:4:9
-  |
-4 |     for &item in list.iter() {
-  |         ^----
-  |         ||
-  |         |hint: to prevent move, use `ref item` or `ref mut item`
-  |         cannot move out of borrowed content
+{{#include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-07-fixing-listing-10-05/output.txt}}
 ```
 
 The key line in this error is `cannot move out of type [T], a non-copy slice`.
@@ -498,29 +384,7 @@ values in the slice that we pass into the function implement the `PartialOrd`
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn largest<T: PartialOrd + Copy>(list: &[T]) -> T {
-    let mut largest = list[0];
-
-    for &item in list.iter() {
-        if item > largest {
-            largest = item;
-        }
-    }
-
-    largest
-}
-
-fn main() {
-    let number_list = vec![34, 50, 25, 100, 65];
-
-    let result = largest(&number_list);
-    println!("The largest number is {}", result);
-
-    let char_list = vec!['y', 'm', 'a', 'q'];
-
-    let result = largest(&char_list);
-    println!("The largest char is {}", result);
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-15/src/main.rs}}
 ```
 
 <span class="caption">Listing 10-15: A working definition of the `largest`
@@ -550,32 +414,10 @@ traits. For example, the type `Pair<T>` in Listing 10-16 always implements the
 inner type `T` implements the `PartialOrd` trait that enables comparison *and*
 the `Display` trait that enables printing.
 
+<span class="filename">Filename: src/lib.rs</span>
+
 ```rust
-use std::fmt::Display;
-
-struct Pair<T> {
-    x: T,
-    y: T,
-}
-
-impl<T> Pair<T> {
-    fn new(x: T, y: T) -> Self {
-        Self {
-            x,
-            y,
-        }
-    }
-}
-
-impl<T: Display + PartialOrd> Pair<T> {
-    fn cmp_display(&self) {
-        if self.x >= self.y {
-            println!("The largest member is x = {}", self.x);
-        } else {
-            println!("The largest member is y = {}", self.y);
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/src/lib.rs}}
 ```
 
 <span class="caption">Listing 10-16: Conditionally implement methods on a
diff --git a/src/ch10-03-lifetime-syntax.md b/src/ch10-03-lifetime-syntax.md
index 383a4ec4..c0070394 100644
--- a/src/ch10-03-lifetime-syntax.md
+++ b/src/ch10-03-lifetime-syntax.md
@@ -25,16 +25,7 @@ Consider the program in Listing 10-17, which has an outer scope and an inner
 scope.
 
 ```rust,ignore,does_not_compile
-{
-    let r;
-
-    {
-        let x = 5;
-        r = &x;
-    }
-
-    println!("r: {}", r);
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-17: An attempt to use a reference whose value
@@ -55,16 +46,7 @@ compile because the value `r` is referring to has gone out of scope before we
 try to use it. Here is the error message:
 
 ```text
-error[E0597]: `x` does not live long enough
-  --> src/main.rs:7:5
-   |
-6  |         r = &x;
-   |              - borrow occurs here
-7  |     }
-   |     ^ `x` dropped here while still borrowed
-...
-10 | }
-   | - borrowed value needs to live until here
+{{#include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/output.txt}}
 ```
 
 The variable `x` doesn’t “live long enough.” The reason is that `x` will be out
@@ -82,16 +64,7 @@ whether all borrows are valid. Listing 10-18 shows the same code as Listing
 10-17 but with annotations showing the lifetimes of the variables.
 
 ```rust,ignore,does_not_compile
-{
-    let r;                // ---------+-- 'a
-                          //          |
-    {                     //          |
-        let x = 5;        // -+-- 'b  |
-        r = &x;           //  |       |
-    }                     // -+       |
-                          //          |
-    println!("r: {}", r); //          |
-}                         // ---------+
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-18: Annotations of the lifetimes of `r` and
@@ -108,14 +81,7 @@ Listing 10-19 fixes the code so it doesn’t have a dangling reference and
 compiles without any errors.
 
 ```rust
-{
-    let x = 5;            // ----------+-- 'b
-                          //           |
-    let r = &x;           // --+-- 'a  |
-                          //   |       |
-    println!("r: {}", r); //   |       |
-                          // --+       |
-}                         // ----------+
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-19: A valid reference because the data has a
@@ -139,13 +105,7 @@ longest string is abcd`.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-fn main() {
-    let string1 = String::from("abcd");
-    let string2 = "xyz";
-
-    let result = longest(string1.as_str(), string2);
-    println!("The longest string is {}", result);
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/src/main.rs}}
 ```
 
 <span class="caption">Listing 10-20: A `main` function that calls the `longest`
@@ -167,13 +127,7 @@ won’t compile.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn longest(x: &str, y: &str) -> &str {
-    if x.len() > y.len() {
-        x
-    } else {
-        y
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-21: An implementation of the `longest`
@@ -183,14 +137,7 @@ compile</span>
 Instead, we get the following error that talks about lifetimes:
 
 ```text
-error[E0106]: missing lifetime specifier
- --> src/main.rs:1:33
-  |
-1 | fn longest(x: &str, y: &str) -> &str {
-  |                                 ^ expected lifetime parameter
-  |
-  = help: this function's return type contains a borrowed value, but the
-signature does not say whether it is borrowed from `x` or `y`
+{{#include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/output.txt}}
 ```
 
 The help text reveals that the return type needs a generic lifetime parameter
@@ -257,13 +204,7 @@ Listing 10-22.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
-    if x.len() > y.len() {
-        x
-    } else {
-        y
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-22: The `longest` function definition
@@ -310,23 +251,7 @@ a straightforward example.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
-#     if x.len() > y.len() {
-#         x
-#     } else {
-#         y
-#     }
-# }
-#
-fn main() {
-    let string1 = String::from("long string is long");
-
-    {
-        let string2 = String::from("xyz");
-        let result = longest(string1.as_str(), string2.as_str());
-        println!("The longest string is {}", result);
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-23: Using the `longest` function with
@@ -349,15 +274,7 @@ compile.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let string1 = String::from("long string is long");
-    let result;
-    {
-        let string2 = String::from("xyz");
-        result = longest(string1.as_str(), string2.as_str());
-    }
-    println!("The longest string is {}", result);
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-24: Attempting to use `result` after `string2`
@@ -366,16 +283,7 @@ has gone out of scope</span>
 When we try to compile this code, we’ll get this error:
 
 ```text
-error[E0597]: `string2` does not live long enough
-  --> src/main.rs:15:5
-   |
-14 |         result = longest(string1.as_str(), string2.as_str());
-   |                                            ------- borrow occurs here
-15 |     }
-   |     ^ `string2` dropped here while still borrowed
-16 |     println!("The longest string is {}", result);
-17 | }
-   | - borrowed value needs to live until here
+{{#include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-24/output.txt}}
 ```
 
 The error shows that for `result` to be valid for the `println!` statement,
@@ -408,9 +316,7 @@ following code will compile:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn longest<'a>(x: &'a str, y: &str) -> &'a str {
-    x
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/src/main.rs:here}}
 ```
 
 In this example, we’ve specified a lifetime parameter `'a` for the parameter
@@ -427,10 +333,7 @@ this attempted implementation of the `longest` function that won’t compile:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn longest<'a>(x: &str, y: &str) -> &'a str {
-    let result = String::from("really long string");
-    result.as_str()
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/src/main.rs:here}}
 ```
 
 Here, even though we’ve specified a lifetime parameter `'a` for the return
@@ -439,23 +342,7 @@ lifetime is not related to the lifetime of the parameters at all. Here is the
 error message we get:
 
 ```text
-error[E0597]: `result` does not live long enough
- --> src/main.rs:3:5
-  |
-3 |     result.as_str()
-  |     ^^^^^^ does not live long enough
-4 | }
-  | - borrowed value only lives until here
-  |
-note: borrowed value must be valid for the lifetime 'a as defined on the
-function body at 1:1...
- --> src/main.rs:1:1
-  |
-1 | / fn longest<'a>(x: &str, y: &str) -> &'a str {
-2 | |     let result = String::from("really long string");
-3 | |     result.as_str()
-4 | | }
-  | |_^
+{{#include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/output.txt}}
 ```
 
 The problem is that `result` goes out of scope and gets cleaned up at the end
@@ -481,17 +368,7 @@ struct named `ImportantExcerpt` that holds a string slice.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-struct ImportantExcerpt<'a> {
-    part: &'a str,
-}
-
-fn main() {
-    let novel = String::from("Call me Ishmael. Some years ago...");
-    let first_sentence = novel.split('.')
-        .next()
-        .expect("Could not find a '.'");
-    let i = ImportantExcerpt { part: first_sentence };
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-25/src/main.rs}}
 ```
 
 <span class="caption">Listing 10-25: A struct that holds a reference, so its
@@ -521,17 +398,7 @@ Chapter 4 we had a function in Listing 4-9, which is shown again in Listing
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-fn first_word(s: &str) -> &str {
-    let bytes = s.as_bytes();
-
-    for (i, &item) in bytes.iter().enumerate() {
-        if item == b' ' {
-            return &s[0..i];
-        }
-    }
-
-    &s[..]
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/listing-10-26/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 10-26: A function we defined in Listing 4-9 that
@@ -671,15 +538,7 @@ First, we’ll use a method named `level` whose only parameter is a reference to
 `self` and whose return value is an `i32`, which is not a reference to anything:
 
 ```rust
-# struct ImportantExcerpt<'a> {
-#     part: &'a str,
-# }
-#
-impl<'a> ImportantExcerpt<'a> {
-    fn level(&self) -> i32 {
-        3
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/src/main.rs:1st}}
 ```
 
 The lifetime parameter declaration after `impl` and its use after the type name
@@ -689,16 +548,7 @@ to `self` because of the first elision rule.
 Here is an example where the third lifetime elision rule applies:
 
 ```rust
-# struct ImportantExcerpt<'a> {
-#     part: &'a str,
-# }
-#
-impl<'a> ImportantExcerpt<'a> {
-    fn announce_and_return_part(&self, announcement: &str) -> &str {
-        println!("Attention please: {}", announcement);
-        self.part
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/src/main.rs:3rd}}
 ```
 
 There are two input lifetimes, so Rust applies the first lifetime elision rule
@@ -734,18 +584,7 @@ Let’s briefly look at the syntax of specifying generic type parameters, trait
 bounds, and lifetimes all in one function!
 
 ```rust
-use std::fmt::Display;
-
-fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
-    where T: Display
-{
-    println!("Announcement! {}", ann);
-    if x.len() > y.len() {
-        x
-    } else {
-        y
-    }
-}
+{{#rustdoc_include ../listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/src/main.rs:here}}
 ```
 
 This is the `longest` function from Listing 10-22 that returns the longer of
diff --git a/src/ch11-01-writing-tests.md b/src/ch11-01-writing-tests.md
index 42a53918..a2f62ce4 100644
--- a/src/ch11-01-writing-tests.md
+++ b/src/ch11-01-writing-tests.md
@@ -47,14 +47,7 @@ Listing 11-1.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# fn main() {}
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        assert_eq!(2 + 2, 4);
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-01/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 11-1: The test module and function generated
@@ -75,21 +68,7 @@ The `cargo test` command runs all tests in our project, as shown in Listing
 11-2.
 
 ```text
-$ cargo test
-   Compiling adder v0.1.0 (file:///projects/adder)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.22 secs
-     Running target/debug/deps/adder-ce99bcc2479f4607
-
-running 1 test
-test tests::it_works ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
-
-   Doc-tests adder
-
-running 0 tests
-
-test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/listing-11-01/output.txt}}
 ```
 
 <span class="caption">Listing 11-2: The output from running the automatically
@@ -129,24 +108,14 @@ so:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# fn main() {}
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn exploration() {
-        assert_eq!(2 + 2, 4);
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/src/lib.rs:here}}
 ```
 
 Then run `cargo test` again. The output now shows `exploration` instead of
 `it_works`:
 
 ```text
-running 1 test
-test tests::exploration ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/no-listing-01-changing-test-name/output.txt}}
 ```
 
 Let’s add another test, but this time we’ll make a test that fails! Tests fail
@@ -159,19 +128,7 @@ which is to call the `panic!` macro. Enter the new test, `another`, so your
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,panics
-# fn main() {}
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn exploration() {
-        assert_eq!(2 + 2, 4);
-    }
-
-    #[test]
-    fn another() {
-        panic!("Make this test fail");
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-03/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 11-3: Adding a second test that will fail because
@@ -181,22 +138,7 @@ Run the tests again using `cargo test`. The output should look like Listing
 11-4, which shows that our `exploration` test passed and `another` failed.
 
 ```text
-running 2 tests
-test tests::exploration ... ok
-test tests::another ... FAILED
-
-failures:
-
----- tests::another stdout ----
-thread 'tests::another' panicked at 'Make this test fail', src/lib.rs:10:9
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
-
-failures:
-    tests::another
-
-test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
-
-error: test failed
+{{#include ../listings/ch11-writing-automated-tests/listing-11-03/output.txt}}
 ```
 
 <span class="caption">Listing 11-4: Test results when one test passes and one
@@ -236,18 +178,7 @@ method, which are repeated here in Listing 11-5. Let’s put this code in the
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# fn main() {}
-#[derive(Debug)]
-struct Rectangle {
-    width: u32,
-    height: u32,
-}
-
-impl Rectangle {
-    fn can_hold(&self, other: &Rectangle) -> bool {
-        self.width > other.width && self.height > other.height
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-05/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 11-5: Using the `Rectangle` struct and its
@@ -262,19 +193,7 @@ has a width of 5 and a height of 1.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# fn main() {}
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn larger_can_hold_smaller() {
-        let larger = Rectangle { width: 8, height: 7 };
-        let smaller = Rectangle { width: 5, height: 1 };
-
-        assert!(larger.can_hold(&smaller));
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-06/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 11-6: A test for `can_hold` that checks whether a
@@ -295,10 +214,7 @@ passed it the result of calling `larger.can_hold(&smaller)`. This expression
 is supposed to return `true`, so our test should pass. Let’s find out!
 
 ```text
-running 1 test
-test tests::larger_can_hold_smaller ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/listing-11-06/output.txt}}
 ```
 
 It does pass! Let’s add another test, this time asserting that a smaller
@@ -307,24 +223,7 @@ rectangle cannot hold a larger rectangle:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# fn main() {}
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn larger_can_hold_smaller() {
-        // --snip--
-    }
-
-    #[test]
-    fn smaller_cannot_hold_larger() {
-        let larger = Rectangle { width: 8, height: 7 };
-        let smaller = Rectangle { width: 5, height: 1 };
-
-        assert!(!smaller.can_hold(&larger));
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/src/lib.rs:here}}
 ```
 
 Because the correct result of the `can_hold` function in this case is `false`,
@@ -332,11 +231,7 @@ we need to negate that result before we pass it to the `assert!` macro. As a
 result, our test will pass if `can_hold` returns `false`:
 
 ```text
-running 2 tests
-test tests::smaller_cannot_hold_larger ... ok
-test tests::larger_can_hold_smaller ... ok
-
-test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/no-listing-02-adding-another-rectangle-test/output.txt}}
 ```
 
 Two tests that pass! Now let’s see what happens to our test results when we
@@ -345,39 +240,13 @@ method by replacing the greater than sign with a less than sign when it
 compares the widths:
 
 ```rust,not_desired_behavior
-# fn main() {}
-# #[derive(Debug)]
-# struct Rectangle {
-#     width: u32,
-#     height: u32,
-# }
-// --snip--
-
-impl Rectangle {
-    fn can_hold(&self, other: &Rectangle) -> bool {
-        self.width < other.width && self.height > other.height
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/src/lib.rs:here}}
 ```
 
 Running the tests now produces the following:
 
 ```text
-running 2 tests
-test tests::smaller_cannot_hold_larger ... ok
-test tests::larger_can_hold_smaller ... FAILED
-
-failures:
-
----- tests::larger_can_hold_smaller stdout ----
-thread 'tests::larger_can_hold_smaller' panicked at 'assertion failed:
-larger.can_hold(&smaller)', src/lib.rs:22:9
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
-
-failures:
-    tests::larger_can_hold_smaller
-
-test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/no-listing-03-introducing-a-bug/output.txt}}
 ```
 
 Our tests caught the bug! Because `larger.width` is 8 and `smaller.width` is
@@ -404,20 +273,7 @@ parameter and returns the result. Then we test this function using the
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# fn main() {}
-pub fn add_two(a: i32) -> i32 {
-    a + 2
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn it_adds_two() {
-        assert_eq!(4, add_two(2));
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-07/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 11-7: Testing the function `add_two` using the
@@ -426,10 +282,7 @@ mod tests {
 Let’s check that it passes!
 
 ```text
-running 1 test
-test tests::it_adds_two ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/listing-11-07/output.txt}}
 ```
 
 The first argument we gave to the `assert_eq!` macro, `4`, is equal to the
@@ -441,30 +294,13 @@ uses `assert_eq!` fails. Change the implementation of the `add_two` function to
 instead add `3`:
 
 ```rust,not_desired_behavior
-# fn main() {}
-pub fn add_two(a: i32) -> i32 {
-    a + 3
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/src/lib.rs:here}}
 ```
 
 Run the tests again:
 
 ```text
-running 1 test
-test tests::it_adds_two ... FAILED
-
-failures:
-
----- tests::it_adds_two stdout ----
-thread 'tests::it_adds_two' panicked at 'assertion failed: `(left == right)`
-  left: `4`,
- right: `5`', src/lib.rs:11:9
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
-
-failures:
-    tests::it_adds_two
-
-test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/no-listing-04-bug-in-add-two/output.txt}}
 ```
 
 Our test caught the bug! The `it_adds_two` test failed, displaying the message
@@ -523,21 +359,7 @@ want to test that the name we pass into the function appears in the output:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# fn main() {}
-pub fn greeting(name: &str) -> String {
-    format!("Hello {}!", name)
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn greeting_contains_name() {
-        let result = greeting("Carol");
-        assert!(result.contains("Carol"));
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-05-greeter/src/lib.rs:here}}
 ```
 
 The requirements for this program haven’t been agreed upon yet, and we’re
@@ -551,27 +373,13 @@ Let’s introduce a bug into this code by changing `greeting` to not include
 `name` to see what this test failure looks like:
 
 ```rust,not_desired_behavior
-# fn main() {}
-pub fn greeting(name: &str) -> String {
-    String::from("Hello!")
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/src/lib.rs:here}}
 ```
 
 Running this test produces the following:
 
 ```text
-running 1 test
-test tests::greeting_contains_name ... FAILED
-
-failures:
-
----- tests::greeting_contains_name stdout ----
-thread 'tests::greeting_contains_name' panicked at 'assertion failed:
-result.contains("Carol")', src/lib.rs:12:9
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
-
-failures:
-    tests::greeting_contains_name
+{{#include ../listings/ch11-writing-automated-tests/no-listing-06-greeter-with-bug/output.txt}}
 ```
 
 This result just indicates that the assertion failed and which line the
@@ -581,23 +389,13 @@ giving it a custom failure message made from a format string with a placeholder
 filled in with the actual value we got from the `greeting` function:
 
 ```rust,ignore
-#[test]
-fn greeting_contains_name() {
-    let result = greeting("Carol");
-    assert!(
-        result.contains("Carol"),
-        "Greeting did not contain name, value was `{}`", result
-    );
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/src/lib.rs:here}}
 ```
 
 Now when we run the test, we’ll get a more informative error message:
 
 ```text
----- tests::greeting_contains_name stdout ----
-thread 'tests::greeting_contains_name' panicked at 'Greeting did not
-contain name, value was `Hello!`', src/lib.rs:12:9
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
+{{#include ../listings/ch11-writing-automated-tests/no-listing-07-custom-failure-message/output.txt}}
 ```
 
 We can see the value we actually got in the test output, which would help us
@@ -623,33 +421,7 @@ happen when we expect them to.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# fn main() {}
-pub struct Guess {
-    value: i32,
-}
-
-impl Guess {
-    pub fn new(value: i32) -> Guess {
-        if value < 1 || value > 100 {
-            panic!("Guess value must be between 1 and 100, got {}.", value);
-        }
-
-        Guess {
-            value
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    #[should_panic]
-    fn greater_than_100() {
-        Guess::new(200);
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-08/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 11-8: Testing that a condition will cause a
@@ -660,48 +432,20 @@ before the test function it applies to. Let’s look at the result when this tes
 passes:
 
 ```text
-running 1 test
-test tests::greater_than_100 ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/listing-11-08/output.txt}}
 ```
 
 Looks good! Now let’s introduce a bug in our code by removing the condition
 that the `new` function will panic if the value is greater than 100:
 
 ```rust,not_desired_behavior
-# fn main() {}
-# pub struct Guess {
-#     value: i32,
-# }
-#
-// --snip--
-
-impl Guess {
-    pub fn new(value: i32) -> Guess {
-        if value < 1  {
-            panic!("Guess value must be between 1 and 100, got {}.", value);
-        }
-
-        Guess {
-            value
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/src/lib.rs:here}}
 ```
 
 When we run the test in Listing 11-8, it will fail:
 
 ```text
-running 1 test
-test tests::greater_than_100 ... FAILED
-
-failures:
-
-failures:
-    tests::greater_than_100
-
-test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/output.txt}}
 ```
 
 We don’t get a very helpful message in this case, but when we look at the test
@@ -720,39 +464,7 @@ different messages depending on whether the value is too small or too large.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# fn main() {}
-# pub struct Guess {
-#     value: i32,
-# }
-#
-// --snip--
-
-impl Guess {
-    pub fn new(value: i32) -> Guess {
-        if value < 1 {
-            panic!("Guess value must be greater than or equal to 1, got {}.",
-                   value);
-        } else if value > 100 {
-            panic!("Guess value must be less than or equal to 100, got {}.",
-                   value);
-        }
-
-        Guess {
-            value
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    #[should_panic(expected = "Guess value must be less than or equal to 100")]
-    fn greater_than_100() {
-        Guess::new(200);
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-09/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 11-9: Testing that a condition will cause a
@@ -773,32 +485,13 @@ fails, let’s again introduce a bug into our code by swapping the bodies of the
 `if value < 1` and the `else if value > 100` blocks:
 
 ```rust,ignore,not_desired_behavior
-if value < 1 {
-    panic!("Guess value must be less than or equal to 100, got {}.", value);
-} else if value > 100 {
-    panic!("Guess value must be greater than or equal to 1, got {}.", value);
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/src/lib.rs:here}}
 ```
 
 This time when we run the `should_panic` test, it will fail:
 
 ```text
-running 1 test
-test tests::greater_than_100 ... FAILED
-
-failures:
-
----- tests::greater_than_100 stdout ----
-thread 'tests::greater_than_100' panicked at 'Guess value must be
-greater than or equal to 1, got 200.', src/lib.rs:11:13
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
-note: Panic did not include expected string 'Guess value must be less than or
-equal to 100'
-
-failures:
-    tests::greater_than_100
-
-test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/no-listing-09-guess-with-panic-msg-bug/output.txt}}
 ```
 
 The failure message indicates that this test did indeed panic as we expected,
@@ -814,17 +507,7 @@ that use `Result<T, E>`! Here’s the test from Listing 11-1, rewritten to use
 `Result<T, E>` and return an `Err` instead of panicking:
 
 ```rust
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() -> Result<(), String> {
-        if 2 + 2 == 4 {
-            Ok(())
-        } else {
-            Err(String::from("two plus two does not equal four"))
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-10-result-in-tests/src/lib.rs}}
 ```
 
 The `it_works` function now has a return type, `Result<(), String>`. In the
diff --git a/src/ch11-02-running-tests.md b/src/ch11-02-running-tests.md
index 26293d19..ff29fc42 100644
--- a/src/ch11-02-running-tests.md
+++ b/src/ch11-02-running-tests.md
@@ -62,27 +62,7 @@ parameter and returns 10, as well as a test that passes and a test that fails.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,panics
-fn prints_and_returns_10(a: i32) -> i32 {
-    println!("I got the value {}", a);
-    10
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn this_test_will_pass() {
-        let value = prints_and_returns_10(4);
-        assert_eq!(10, value);
-    }
-
-    #[test]
-    fn this_test_will_fail() {
-        let value = prints_and_returns_10(8);
-        assert_eq!(5, value);
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-10/src/lib.rs}}
 ```
 
 <span class="caption">Listing 11-10: Tests for a function that calls
@@ -91,23 +71,7 @@ mod tests {
 When we run these tests with `cargo test`, we’ll see the following output:
 
 ```text
-running 2 tests
-test tests::this_test_will_pass ... ok
-test tests::this_test_will_fail ... FAILED
-
-failures:
-
----- tests::this_test_will_fail stdout ----
-I got the value 8
-thread 'tests::this_test_will_fail' panicked at 'assertion failed: `(left == right)`
-  left: `5`,
- right: `10`', src/lib.rs:19:9
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
-
-failures:
-    tests::this_test_will_fail
-
-test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/listing-11-10/output.txt}}
 ```
 
 Note that nowhere in this output do we see `I got the value 4`, which is what
@@ -155,6 +119,10 @@ failures:
 test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
 ```
 
+<!-- TODO: replace with:
+include ../listings/ch11-writing-automated-tests/output-only-01-show-output/output.txt
+when we're using 1.39 where the --show-output option was added -->
+
 ### Running a Subset of Tests by Name
 
 Sometimes, running a full test suite can take a long time. If you’re working on
@@ -168,29 +136,7 @@ To demonstrate how to run a subset of tests, we’ll create three tests for our
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub fn add_two(a: i32) -> i32 {
-    a + 2
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn add_two_and_two() {
-        assert_eq!(4, add_two(2));
-    }
-
-    #[test]
-    fn add_three_and_two() {
-        assert_eq!(5, add_two(3));
-    }
-
-    #[test]
-    fn one_hundred() {
-        assert_eq!(102, add_two(100));
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-11/src/lib.rs}}
 ```
 
 <span class="caption">Listing 11-11: Three tests with three different
@@ -200,12 +146,7 @@ If we run the tests without passing any arguments, as we saw earlier, all the
 tests will run in parallel:
 
 ```text
-running 3 tests
-test tests::add_two_and_two ... ok
-test tests::add_three_and_two ... ok
-test tests::one_hundred ... ok
-
-test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/listing-11-11/output.txt}}
 ```
 
 #### Running Single Tests
@@ -213,14 +154,7 @@ test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
 We can pass the name of any test function to `cargo test` to run only that test:
 
 ```text
-$ cargo test one_hundred
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
-     Running target/debug/deps/adder-06a75b4a1f2515e9
-
-running 1 test
-test tests::one_hundred ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 2 filtered out
+{{#include ../listings/ch11-writing-automated-tests/output-only-02-single-test/output.txt}}
 ```
 
 Only the test with the name `one_hundred` ran; the other two tests didn’t match
@@ -237,15 +171,7 @@ will be run. For example, because two of our tests’ names contain `add`, we ca
 run those two by running `cargo test add`:
 
 ```text
-$ cargo test add
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
-     Running target/debug/deps/adder-06a75b4a1f2515e9
-
-running 2 tests
-test tests::add_two_and_two ... ok
-test tests::add_three_and_two ... ok
-
-test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 1 filtered out
+{{#include ../listings/ch11-writing-automated-tests/output-only-03-multiple-tests/output.txt}}
 ```
 
 This command ran all tests with `add` in the name and filtered out the test
@@ -264,46 +190,21 @@ here:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-#[test]
-fn it_works() {
-    assert_eq!(2 + 2, 4);
-}
-
-#[test]
-#[ignore]
-fn expensive_test() {
-    // code that takes an hour to run
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/src/lib.rs:here}}
 ```
 
 After `#[test]` we add the `#[ignore]` line to the test we want to exclude. Now
 when we run our tests, `it_works` runs, but `expensive_test` doesn’t:
 
 ```text
-$ cargo test
-   Compiling adder v0.1.0 (file:///projects/adder)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.24 secs
-     Running target/debug/deps/adder-ce99bcc2479f4607
-
-running 2 tests
-test expensive_test ... ignored
-test it_works ... ok
-
-test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/no-listing-11-ignore-a-test/output.txt}}
 ```
 
 The `expensive_test` function is listed as `ignored`. If we want to run only
 the ignored tests, we can use `cargo test -- --ignored`:
 
 ```text
-$ cargo test -- --ignored
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
-     Running target/debug/deps/adder-ce99bcc2479f4607
-
-running 1 test
-test expensive_test ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 1 filtered out
+{{#include ../listings/ch11-writing-automated-tests/output-only-04-running-ignored/output.txt}}
 ```
 
 By controlling which tests run, you can make sure your `cargo test` results
diff --git a/src/ch11-03-test-organization.md b/src/ch11-03-test-organization.md
index 2af6a0e0..9ac94975 100644
--- a/src/ch11-03-test-organization.md
+++ b/src/ch11-03-test-organization.md
@@ -38,13 +38,7 @@ this chapter, Cargo generated this code for us:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        assert_eq!(2 + 2, 4);
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-01/src/lib.rs:here}}
 ```
 
 This code is the automatically generated test module. The attribute `cfg`
@@ -67,25 +61,7 @@ Consider the code in Listing 11-12 with the private function `internal_adder`.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# fn main() {}
-
-pub fn add_two(a: i32) -> i32 {
-    internal_adder(a, 2)
-}
-
-fn internal_adder(a: i32, b: i32) -> i32 {
-    a + b
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn internal() {
-        assert_eq!(4, internal_adder(2, 2));
-    }
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-12/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 11-12: Testing a private function</span>
@@ -120,12 +96,7 @@ Let’s create an integration test. With the code in Listing 11-12 still in the
 <span class="filename">Filename: tests/integration_test.rs</span>
 
 ```rust,ignore
-use adder;
-
-#[test]
-fn it_adds_two() {
-    assert_eq!(4, adder::add_two(2));
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/listing-11-13/tests/integration_test.rs}}
 ```
 
 <span class="caption">Listing 11-13: An integration test of a function in the
@@ -140,28 +111,7 @@ We don’t need to annotate any code in *tests/integration_test.rs* with
 in this directory only when we run `cargo test`. Run `cargo test` now:
 
 ```text
-$ cargo test
-   Compiling adder v0.1.0 (file:///projects/adder)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.31 secs
-     Running target/debug/deps/adder-abcabcabc
-
-running 1 test
-test tests::internal ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
-
-     Running target/debug/deps/integration_test-ce99bcc2479f4607
-
-running 1 test
-test it_adds_two ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
-
-   Doc-tests adder
-
-running 0 tests
-
-test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/listing-11-13/output.txt}}
 ```
 
 The three sections of output include the unit tests, the integration test, and
@@ -187,14 +137,7 @@ particular integration test file, use the `--test` argument of `cargo test`
 followed by the name of the file:
 
 ```text
-$ cargo test --test integration_test
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
-     Running target/debug/integration_test-952a27e0126bb565
-
-running 1 test
-test it_adds_two ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/output-only-05-single-integration/output.txt}}
 ```
 
 This command runs only the tests in the *tests/integration_test.rs* file.
@@ -224,9 +167,7 @@ multiple test files:
 <span class="filename">Filename: tests/common.rs</span>
 
 ```rust
-pub fn setup() {
-    // setup code specific to your library's tests would go here
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/tests/common.rs}}
 ```
 
 When we run the tests again, we’ll see a new section in the test output for the
@@ -234,29 +175,7 @@ When we run the tests again, we’ll see a new section in the test output for th
 did we call the `setup` function from anywhere:
 
 ```text
-running 1 test
-test tests::internal ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
-
-     Running target/debug/deps/common-b8b07b6f1be2db70
-
-running 0 tests
-
-test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
-
-     Running target/debug/deps/integration_test-d993c68b431d39df
-
-running 1 test
-test it_adds_two ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
-
-   Doc-tests adder
-
-running 0 tests
-
-test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch11-writing-automated-tests/no-listing-12-shared-test-code-problem/output.txt}}
 ```
 
 Having `common` appear in the test results with `running 0 tests` displayed for
@@ -279,15 +198,7 @@ function from the `it_adds_two` test in *tests/integration_test.rs*:
 <span class="filename">Filename: tests/integration_test.rs</span>
 
 ```rust,ignore
-use adder;
-
-mod common;
-
-#[test]
-fn it_adds_two() {
-    common::setup();
-    assert_eq!(4, adder::add_two(2));
-}
+{{#rustdoc_include ../listings/ch11-writing-automated-tests/no-listing-13-fix-shared-test-code-problem/tests/integration_test.rs}}
 ```
 
 Note that the `mod common;` declaration is the same as the module declaration
diff --git a/src/ch12-01-accepting-command-line-arguments.md b/src/ch12-01-accepting-command-line-arguments.md
index 5f4f61e8..f327361f 100644
--- a/src/ch12-01-accepting-command-line-arguments.md
+++ b/src/ch12-01-accepting-command-line-arguments.md
@@ -41,12 +41,7 @@ command line arguments passed to it and then collect the values into a vector.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::env;
-
-fn main() {
-    let args: Vec<String> = env::args().collect();
-    println!("{:?}", args);
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-01/src/main.rs}}
 ```
 
 <span class="caption">Listing 12-1: Collecting the command line arguments into
@@ -83,13 +78,11 @@ Finally, we print the vector using the debug formatter, `:?`. Let’s try runnin
 the code first with no arguments and then with two arguments:
 
 ```text
-$ cargo run
---snip--
-["target/debug/minigrep"]
+{{#include ../listings/ch12-an-io-project/listing-12-01/output.txt}}
+```
 
-$ cargo run needle haystack
---snip--
-["target/debug/minigrep", "needle", "haystack"]
+```text
+{{#include ../listings/ch12-an-io-project/output-only-01-with-args/output.txt}}
 ```
 
 Notice that the first value in the vector is `"target/debug/minigrep"`, which
@@ -110,17 +103,7 @@ throughout the rest of the program. We do that in Listing 12-2.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,should_panic
-use std::env;
-
-fn main() {
-    let args: Vec<String> = env::args().collect();
-
-    let query = &args[1];
-    let filename = &args[2];
-
-    println!("Searching for {}", query);
-    println!("In file {}", filename);
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-02/src/main.rs}}
 ```
 
 <span class="caption">Listing 12-2: Creating variables to hold the query
@@ -138,12 +121,7 @@ working as we intend. Let’s run this program again with the arguments `test`
 and `sample.txt`:
 
 ```text
-$ cargo run test sample.txt
-   Compiling minigrep v0.1.0 (file:///projects/minigrep)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
-     Running `target/debug/minigrep test sample.txt`
-Searching for test
-In file sample.txt
+{{#include ../listings/ch12-an-io-project/listing-12-02/output.txt}}
 ```
 
 Great, the program is working! The values of the arguments we need are being
diff --git a/src/ch12-02-reading-a-file.md b/src/ch12-02-reading-a-file.md
index 8c4c92ec..0b07e7a7 100644
--- a/src/ch12-02-reading-a-file.md
+++ b/src/ch12-02-reading-a-file.md
@@ -11,15 +11,7 @@ Who are you?”
 <span class="filename">Filename: poem.txt</span>
 
 ```text
-I'm nobody! Who are you?
-Are you nobody, too?
-Then there's a pair of us - don't tell!
-They'd banish us, you know.
-
-How dreary to be somebody!
-How public, like a frog
-To tell your name the livelong day
-To an admiring bog!
+{{#include ../listings/ch12-an-io-project/listing-12-03/poem.txt}}
 ```
 
 <span class="caption">Listing 12-3: A poem by Emily Dickinson makes a good test
@@ -31,24 +23,7 @@ shown in Listing 12-4.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,should_panic
-use std::env;
-use std::fs;
-
-fn main() {
-#     let args: Vec<String> = env::args().collect();
-#
-#     let query = &args[1];
-#     let filename = &args[2];
-#
-#     println!("Searching for {}", query);
-    // --snip--
-    println!("In file {}", filename);
-
-    let contents = fs::read_to_string(filename)
-        .expect("Something went wrong reading the file");
-
-    println!("With text:\n{}", contents);
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-04/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 12-4: Reading the contents of the file specified
@@ -70,22 +45,7 @@ we haven’t implemented the searching part yet) and the *poem.txt* file as the
 second argument:
 
 ```text
-$ cargo run the poem.txt
-   Compiling minigrep v0.1.0 (file:///projects/minigrep)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
-     Running `target/debug/minigrep the poem.txt`
-Searching for the
-In file poem.txt
-With text:
-I'm nobody! Who are you?
-Are you nobody, too?
-Then there's a pair of us — don't tell!
-They'd banish us, you know.
-
-How dreary to be somebody!
-How public, like a frog
-To tell your name the livelong day
-To an admiring bog!
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-04/output.txt}}
 ```
 
 Great! The code read and then printed the contents of the file. But the code
diff --git a/src/ch12-03-improving-error-handling-and-modularity.md b/src/ch12-03-improving-error-handling-and-modularity.md
index d26c5900..cf5bd88e 100644
--- a/src/ch12-03-improving-error-handling-and-modularity.md
+++ b/src/ch12-03-improving-error-handling-and-modularity.md
@@ -75,20 +75,7 @@ function `parse_config`, which we’ll define in *src/main.rs* for the moment.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-fn main() {
-    let args: Vec<String> = env::args().collect();
-
-    let (query, filename) = parse_config(&args);
-
-    // --snip--
-}
-
-fn parse_config(args: &[String]) -> (&str, &str) {
-    let query = &args[1];
-    let filename = &args[2];
-
-    (query, filename)
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-05/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 12-5: Extracting a `parse_config` function from
@@ -133,34 +120,7 @@ Listing 12-6 shows the improvements to the `parse_config` function.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,should_panic
-# use std::env;
-# use std::fs;
-#
-fn main() {
-    let args: Vec<String> = env::args().collect();
-
-    let config = parse_config(&args);
-
-    println!("Searching for {}", config.query);
-    println!("In file {}", config.filename);
-
-    let contents = fs::read_to_string(config.filename)
-        .expect("Something went wrong reading the file");
-
-    // --snip--
-}
-
-struct Config {
-    query: String,
-    filename: String,
-}
-
-fn parse_config(args: &[String]) -> Config {
-    let query = args[1].clone();
-    let filename = args[2].clone();
-
-    Config { query, filename }
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-06/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 12-6: Refactoring `parse_config` to return an
@@ -228,31 +188,7 @@ shows the changes we need to make.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,should_panic
-# use std::env;
-#
-fn main() {
-    let args: Vec<String> = env::args().collect();
-
-    let config = Config::new(&args);
-
-    // --snip--
-}
-
-# struct Config {
-#     query: String,
-#     filename: String,
-# }
-#
-// --snip--
-
-impl Config {
-    fn new(args: &[String]) -> Config {
-        let query = args[1].clone();
-        let filename = args[2].clone();
-
-        Config { query, filename }
-    }
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-07/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 12-7: Changing `parse_config` into
@@ -271,13 +207,7 @@ panic if the vector contains fewer than three items. Try running the program
 without any arguments; it will look like this:
 
 ```text
-$ cargo run
-   Compiling minigrep v0.1.0 (file:///projects/minigrep)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
-     Running `target/debug/minigrep`
-thread 'main' panicked at 'index out of bounds: the len is 1
-but the index is 1', src/main.rs:25:21
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
+{{#include ../listings/ch12-an-io-project/listing-12-07/output.txt}}
 ```
 
 The line `index out of bounds: the len is 1 but the index is 1` is an error
@@ -294,12 +224,7 @@ out of bounds` message.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-// --snip--
-fn new(args: &[String]) -> Config {
-    if args.len() < 3 {
-        panic!("not enough arguments");
-    }
-    // --snip--
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-08/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 12-8: Adding a check for the number of
@@ -317,12 +242,7 @@ With these extra few lines of code in `new`, let’s run the program without any
 arguments again to see what the error looks like now:
 
 ```text
-$ cargo run
-   Compiling minigrep v0.1.0 (file:///projects/minigrep)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
-     Running `target/debug/minigrep`
-thread 'main' panicked at 'not enough arguments', src/main.rs:26:13
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
+{{#include ../listings/ch12-an-io-project/listing-12-08/output.txt}}
 ```
 
 This output is better: we now have a reasonable error message. However, we also
@@ -350,18 +270,7 @@ next listing.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-impl Config {
-    fn new(args: &[String]) -> Result<Config, &'static str> {
-        if args.len() < 3 {
-            return Err("not enough arguments");
-        }
-
-        let query = args[1].clone();
-        let filename = args[2].clone();
-
-        Ok(Config { query, filename })
-    }
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-09/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 12-9: Returning a `Result` from
@@ -394,17 +303,7 @@ program that the program exited with an error state.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use std::process;
-
-fn main() {
-    let args: Vec<String> = env::args().collect();
-
-    let config = Config::new(&args).unwrap_or_else(|err| {
-        println!("Problem parsing arguments: {}", err);
-        process::exit(1);
-    });
-
-    // --snip--
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-10/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 12-10: Exiting with an error code if creating a
@@ -433,11 +332,7 @@ number that was passed as the exit status code. This is similar to the
 extra output. Let’s try it:
 
 ```text
-$ cargo run
-   Compiling minigrep v0.1.0 (file:///projects/minigrep)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.48 secs
-     Running `target/debug/minigrep`
-Problem parsing arguments: not enough arguments
+{{#include ../listings/ch12-an-io-project/listing-12-10/output.txt}}
 ```
 
 Great! This output is much friendlier for our users.
@@ -459,23 +354,7 @@ defining the function in *src/main.rs*.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-fn main() {
-    // --snip--
-
-    println!("Searching for {}", config.query);
-    println!("In file {}", config.filename);
-
-    run(config);
-}
-
-fn run(config: Config) {
-    let contents = fs::read_to_string(config.filename)
-        .expect("Something went wrong reading the file");
-
-    println!("With text:\n{}", contents);
-}
-
-// --snip--
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-11/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 12-11: Extracting a `run` function containing the
@@ -498,17 +377,7 @@ signature and body of `run`.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use std::error::Error;
-
-// --snip--
-
-fn run(config: Config) -> Result<(), Box<dyn Error>> {
-    let contents = fs::read_to_string(config.filename)?;
-
-    println!("With text:\n{}", contents);
-
-    Ok(())
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-12/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 12-12: Changing the `run` function to return
@@ -543,14 +412,7 @@ it doesn’t return a value we need.
 When you run this code, it will compile but will display a warning:
 
 ```text
-warning: unused `std::result::Result` that must be used
-  --> src/main.rs:17:5
-   |
-17 |     run(config);
-   |     ^^^^^^^^^^^^
-   |
-   = note: #[warn(unused_must_use)] on by default
-   = note: this `Result` may be an `Err` variant, which should be handled
+{{#include ../listings/ch12-an-io-project/listing-12-12/output.txt}}
 ```
 
 Rust tells us that our code ignored the `Result` value and the `Result` value
@@ -566,18 +428,7 @@ with `Config::new` in Listing 12-10, but with a slight difference:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-fn main() {
-    // --snip--
-
-    println!("Searching for {}", config.query);
-    println!("In file {}", config.filename);
-
-    if let Err(e) = run(config) {
-        println!("Application error: {}", e);
-
-        process::exit(1);
-    }
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/no-listing-01-handling-errors-in-main/src/main.rs:here}}
 ```
 
 We use `if let` rather than `unwrap_or_else` to check whether `run` returns an
@@ -611,23 +462,7 @@ compile until we modify *src/main.rs* in Listing 12-14.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-use std::error::Error;
-use std::fs;
-
-pub struct Config {
-    pub query: String,
-    pub filename: String,
-}
-
-impl Config {
-    pub fn new(args: &[String]) -> Result<Config, &'static str> {
-        // --snip--
-    }
-}
-
-pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
-    // --snip--
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-13/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 12-13: Moving `Config` and `run` into
@@ -643,17 +478,7 @@ binary crate in *src/main.rs*, as shown in Listing 12-14.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use std::env;
-use std::process;
-
-use minigrep::Config;
-
-fn main() {
-    // --snip--
-    if let Err(e) = minigrep::run(config) {
-        // --snip--
-    }
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-14/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 12-14: Using the `minigrep` library crate in
diff --git a/src/ch12-04-testing-the-librarys-functionality.md b/src/ch12-04-testing-the-librarys-functionality.md
index e8ed858d..200af771 100644
--- a/src/ch12-04-testing-the-librarys-functionality.md
+++ b/src/ch12-04-testing-the-librarys-functionality.md
@@ -41,28 +41,7 @@ yet.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-#      vec![]
-# }
-#
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn one_result() {
-        let query = "duct";
-        let contents = "\
-Rust:
-safe, fast, productive.
-Pick three.";
-
-        assert_eq!(
-            vec!["safe, fast, productive."],
-            search(query, contents)
-        );
-    }
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-15/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 12-15: Creating a failing test for the `search`
@@ -82,9 +61,7 @@ containing the line `"safe, fast, productive."`
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-    vec![]
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-16/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 12-16: Defining just enough of the `search`
@@ -109,15 +86,7 @@ If we forget the lifetime annotations and try to compile this function, we’ll
 get this error:
 
 ```text
-error[E0106]: missing lifetime specifier
- --> src/lib.rs:5:51
-  |
-5 | pub fn search(query: &str, contents: &str) -> Vec<&str> {
-  |                                                   ^ expected lifetime
-parameter
-  |
-  = help: this function's return type contains a borrowed value, but the
-  signature does not say whether it is borrowed from `query` or `contents`
+{{#include ../listings/ch12-an-io-project/output-only-02-missing-lifetimes/output.txt}}
 ```
 
 Rust can’t possibly know which of the two arguments we need, so we need to tell
@@ -134,31 +103,7 @@ References with Lifetimes”][validating-references-with-lifetimes]<!-- ignore
 Now let’s run the test:
 
 ```text
-$ cargo test
-   Compiling minigrep v0.1.0 (file:///projects/minigrep)
---warnings--
-    Finished dev [unoptimized + debuginfo] target(s) in 0.43 secs
-     Running target/debug/deps/minigrep-abcabcabc
-
-running 1 test
-test tests::one_result ... FAILED
-
-failures:
-
----- tests::one_result stdout ----
-        thread 'tests::one_result' panicked at 'assertion failed: `(left ==
-right)`
-left: `["safe, fast, productive."]`,
-right: `[]`)', src/lib.rs:48:8
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
-
-
-failures:
-    tests::one_result
-
-test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
-
-error: test failed, to rerun pass '--lib'
+{{#include ../listings/ch12-an-io-project/listing-12-16/output.txt}}
 ```
 
 Great, the test fails, exactly as we expected. Let’s get the test to pass!
@@ -185,11 +130,7 @@ won’t compile yet.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-    for line in contents.lines() {
-        // do something with line
-    }
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-17/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 12-17: Iterating through each line in `contents`
@@ -210,13 +151,7 @@ Listing 12-18. Note this still won’t compile yet.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-    for line in contents.lines() {
-        if line.contains(query) {
-            // do something with line
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-18/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 12-18: Adding functionality to see whether the
@@ -232,17 +167,7 @@ shown in Listing 12-19.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-    let mut results = Vec::new();
-
-    for line in contents.lines() {
-        if line.contains(query) {
-            results.push(line);
-        }
-    }
-
-    results
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-19/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 12-19: Storing the lines that match so we can
@@ -252,12 +177,7 @@ Now the `search` function should return only the lines that contain `query`,
 and our test should pass. Let’s run the test:
 
 ```text
-$ cargo test
---snip--
-running 1 test
-test tests::one_result ... ok
-
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch12-an-io-project/listing-12-19/output.txt}}
 ```
 
 Our test passed, so we know it works!
@@ -279,15 +199,7 @@ will print each line returned from `search`:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
-    let contents = fs::read_to_string(config.filename)?;
-
-    for line in search(&config.query, &contents) {
-        println!("{}", line);
-    }
-
-    Ok(())
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/no-listing-02-using-search-in-run/src/lib.rs:here}}
 ```
 
 We’re still using a `for` loop to return each line from `search` and print it.
@@ -296,31 +208,20 @@ Now the entire program should work! Let’s try it out, first with a word that
 should return exactly one line from the Emily Dickinson poem, “frog”:
 
 ```text
-$ cargo run frog poem.txt
-   Compiling minigrep v0.1.0 (file:///projects/minigrep)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.38 secs
-     Running `target/debug/minigrep frog poem.txt`
-How public, like a frog
+{{#include ../listings/ch12-an-io-project/no-listing-02-using-search-in-run/output.txt}}
 ```
 
 Cool! Now let’s try a word that will match multiple lines, like “body”:
 
 ```text
-$ cargo run body poem.txt
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
-     Running `target/debug/minigrep body poem.txt`
-I’m nobody! Who are you?
-Are you nobody, too?
-How dreary to be somebody!
+{{#include ../listings/ch12-an-io-project/output-only-03-multiple-matches/output.txt}}
 ```
 
 And finally, let’s make sure that we don’t get any lines when we search for a
 word that isn’t anywhere in the poem, such as “monomorphization”:
 
 ```text
-$ cargo run monomorphization poem.txt
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
-     Running `target/debug/minigrep monomorphization poem.txt`
+{{#include ../listings/ch12-an-io-project/output-only-04-no-matches/output.txt}}
 ```
 
 Excellent! We’ve built our own mini version of a classic tool and learned a lot
diff --git a/src/ch12-05-working-with-environment-variables.md b/src/ch12-05-working-with-environment-variables.md
index ca03efcd..48b71627 100644
--- a/src/ch12-05-working-with-environment-variables.md
+++ b/src/ch12-05-working-with-environment-variables.md
@@ -19,40 +19,7 @@ tests, as shown in Listing 12-20.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn case_sensitive() {
-        let query = "duct";
-        let contents = "\
-Rust:
-safe, fast, productive.
-Pick three.
-Duct tape.";
-
-        assert_eq!(
-            vec!["safe, fast, productive."],
-            search(query, contents)
-        );
-    }
-
-    #[test]
-    fn case_insensitive() {
-        let query = "rUsT";
-        let contents = "\
-Rust:
-safe, fast, productive.
-Pick three.
-Trust me.";
-
-        assert_eq!(
-            vec!["Rust:", "Trust me."],
-            search_case_insensitive(query, contents)
-        );
-    }
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-20/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 12-20: Adding a new failing test for the
@@ -84,18 +51,7 @@ they’ll be the same case when we check whether the line contains the query.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-    let query = query.to_lowercase();
-    let mut results = Vec::new();
-
-    for line in contents.lines() {
-        if line.to_lowercase().contains(&query) {
-            results.push(line);
-        }
-    }
-
-    results
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-21/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 12-21: Defining the `search_case_insensitive`
@@ -122,11 +78,7 @@ query is.
 Let’s see if this implementation passes the tests:
 
 ```text
-running 2 tests
-test tests::case_insensitive ... ok
-test tests::case_sensitive ... ok
-
-test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+{{#include ../listings/ch12-an-io-project/listing-12-21/output.txt}}
 ```
 
 Great! They passed. Now, let’s call the new `search_case_insensitive` function
@@ -137,12 +89,8 @@ this field anywhere yet:
 
 <span class="filename">Filename: src/lib.rs</span>
 
-```rust
-pub struct Config {
-    pub query: String,
-    pub filename: String,
-    pub case_sensitive: bool,
-}
+```rust,ignore,does_not_compile
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-22/src/lib.rs:here}}
 ```
 
 Note that we added the `case_sensitive` field that holds a Boolean. Next, we
@@ -153,40 +101,8 @@ won’t compile yet.
 
 <span class="filename">Filename: src/lib.rs</span>
 
-```rust
-# use std::error::Error;
-# use std::fs::{self, File};
-# use std::io::prelude::*;
-#
-# pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-#      vec![]
-# }
-#
-# pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-#      vec![]
-# }
-#
-# pub struct Config {
-#     query: String,
-#     filename: String,
-#     case_sensitive: bool,
-# }
-#
-pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
-    let contents = fs::read_to_string(config.filename)?;
-
-    let results = if config.case_sensitive {
-        search(&config.query, &contents)
-    } else {
-        search_case_insensitive(&config.query, &contents)
-    };
-
-    for line in results {
-        println!("{}", line);
-    }
-
-    Ok(())
-}
+```rust,ignore,does_not_compile
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-22/src/lib.rs:there}}
 ```
 
 <span class="caption">Listing 12-22: Calling either `search` or
@@ -202,29 +118,7 @@ in Listing 12-23.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-use std::env;
-# struct Config {
-#     query: String,
-#     filename: String,
-#     case_sensitive: bool,
-# }
-
-// --snip--
-
-impl Config {
-    pub fn new(args: &[String]) -> Result<Config, &'static str> {
-        if args.len() < 3 {
-            return Err("not enough arguments");
-        }
-
-        let query = args[1].clone();
-        let filename = args[2].clone();
-
-        let case_sensitive = env::var("CASE_INSENSITIVE").is_err();
-
-        Ok(Config { query, filename, case_sensitive })
-    }
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-23/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 12-23: Checking for an environment variable named
@@ -254,12 +148,7 @@ variable set and with the query `to`, which should match any line that contains
 the word “to” in all lowercase:
 
 ```text
-$ cargo run to poem.txt
-   Compiling minigrep v0.1.0 (file:///projects/minigrep)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
-     Running `target/debug/minigrep to poem.txt`
-Are you nobody, too?
-How dreary to be somebody!
+{{#include ../listings/ch12-an-io-project/listing-12-23/output.txt}}
 ```
 
 Looks like that still works! Now, let’s run the program with `CASE_INSENSITIVE`
@@ -275,9 +164,15 @@ $ cargo run to poem.txt
 
 We should get lines that contain “to” that might have uppercase letters:
 
+<!-- manual-regeneration
+cd listings/ch12-an-io-project/listing-12-23
+CASE_INSENSITIVE=1 cargo run to poem.txt
+can't extract because of the environment variable
+-->
+
 ```text
 $ CASE_INSENSITIVE=1 cargo run to poem.txt
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
      Running `target/debug/minigrep to poem.txt`
 Are you nobody, too?
 How dreary to be somebody!
diff --git a/src/ch12-06-writing-to-stderr-instead-of-stdout.md b/src/ch12-06-writing-to-stderr-instead-of-stdout.md
index 0fc1aa28..e2a47702 100644
--- a/src/ch12-06-writing-to-stderr-instead-of-stdout.md
+++ b/src/ch12-06-writing-to-stderr-instead-of-stdout.md
@@ -57,20 +57,7 @@ instead.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-fn main() {
-    let args: Vec<String> = env::args().collect();
-
-    let config = Config::new(&args).unwrap_or_else(|err| {
-        eprintln!("Problem parsing arguments: {}", err);
-        process::exit(1);
-    });
-
-    if let Err(e) = minigrep::run(config) {
-        eprintln!("Application error: {}", e);
-
-        process::exit(1);
-    }
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-24/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 12-24: Writing error messages to standard error
diff --git a/src/ch13-01-closures.md b/src/ch13-01-closures.md
index 56f8ed45..953531e1 100644
--- a/src/ch13-01-closures.md
+++ b/src/ch13-01-closures.md
@@ -30,14 +30,7 @@ we passed in.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::thread;
-use std::time::Duration;
-
-fn simulated_expensive_calculation(intensity: u32) -> u32 {
-    println!("calculating slowly...");
-    thread::sleep(Duration::from_secs(2));
-    intensity
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-01/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-1: A function to stand in for a hypothetical
@@ -62,16 +55,7 @@ function we’ll use.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let simulated_user_specified_value = 10;
-    let simulated_random_number = 7;
-
-    generate_workout(
-        simulated_user_specified_value,
-        simulated_random_number
-    );
-}
-# fn generate_workout(intensity: u32, random_number: u32) {}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-02/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-2: A `main` function with hardcoded values to
@@ -92,36 +76,7 @@ changes in this example will be made to this function.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::thread;
-# use std::time::Duration;
-#
-# fn simulated_expensive_calculation(num: u32) -> u32 {
-#     println!("calculating slowly...");
-#     thread::sleep(Duration::from_secs(2));
-#     num
-# }
-#
-fn generate_workout(intensity: u32, random_number: u32) {
-    if intensity < 25 {
-        println!(
-            "Today, do {} pushups!",
-            simulated_expensive_calculation(intensity)
-        );
-        println!(
-            "Next, do {} situps!",
-            simulated_expensive_calculation(intensity)
-        );
-    } else {
-        if random_number == 3 {
-            println!("Take a break today! Remember to stay hydrated!");
-        } else {
-            println!(
-                "Today, run for {} minutes!",
-                simulated_expensive_calculation(intensity)
-            );
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-03/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-3: The business logic that prints the workout
@@ -163,39 +118,7 @@ function into a variable, as shown in Listing 13-4.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::thread;
-# use std::time::Duration;
-#
-# fn simulated_expensive_calculation(num: u32) -> u32 {
-#     println!("calculating slowly...");
-#     thread::sleep(Duration::from_secs(2));
-#     num
-# }
-#
-fn generate_workout(intensity: u32, random_number: u32) {
-    let expensive_result =
-        simulated_expensive_calculation(intensity);
-
-    if intensity < 25 {
-        println!(
-            "Today, do {} pushups!",
-            expensive_result
-        );
-        println!(
-            "Next, do {} situps!",
-            expensive_result
-        );
-    } else {
-        if random_number == 3 {
-            println!("Take a break today! Remember to stay hydrated!");
-        } else {
-            println!(
-                "Today, run for {} minutes!",
-                expensive_result
-            );
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-04/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-4: Extracting the calls to
@@ -222,15 +145,7 @@ the closure we’re introducing here.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::thread;
-# use std::time::Duration;
-#
-let expensive_closure = |num| {
-    println!("calculating slowly...");
-    thread::sleep(Duration::from_secs(2));
-    num
-};
-# expensive_closure(5);
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-05/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-5: Defining a closure and storing it in the
@@ -265,36 +180,7 @@ want to use, as shown in Listing 13-6.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::thread;
-# use std::time::Duration;
-#
-fn generate_workout(intensity: u32, random_number: u32) {
-    let expensive_closure = |num| {
-        println!("calculating slowly...");
-        thread::sleep(Duration::from_secs(2));
-        num
-    };
-
-    if intensity < 25 {
-        println!(
-            "Today, do {} pushups!",
-            expensive_closure(intensity)
-        );
-        println!(
-            "Next, do {} situps!",
-            expensive_closure(intensity)
-        );
-    } else {
-        if random_number == 3 {
-            println!("Take a break today! Remember to stay hydrated!");
-        } else {
-            println!(
-                "Today, run for {} minutes!",
-                expensive_closure(intensity)
-            );
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-06/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-6: Calling the `expensive_closure` we’ve
@@ -339,14 +225,7 @@ would look like the definition shown in Listing 13-7.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::thread;
-# use std::time::Duration;
-#
-let expensive_closure = |num: u32| -> u32 {
-    println!("calculating slowly...");
-    thread::sleep(Duration::from_secs(2));
-    num
-};
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-07/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-7: Adding optional type annotations of the
@@ -383,10 +262,7 @@ first time and a `u32` the second time, we’ll get an error.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-let example_closure = |x| x;
-
-let s = example_closure(String::from("hello"));
-let n = example_closure(5);
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-08/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-8: Attempting to call a closure whose types
@@ -395,15 +271,7 @@ are inferred with two different types</span>
 The compiler gives us this error:
 
 ```text
-error[E0308]: mismatched types
- --> src/main.rs
-  |
-  | let n = example_closure(5);
-  |                         ^ expected struct `std::string::String`, found
-  integer
-  |
-  = note: expected type `std::string::String`
-             found type `{integer}`
+{{#include ../listings/ch13-functional-features/listing-13-08/output.txt}}
 ```
 
 The first time we call `example_closure` with the `String` value, the compiler
@@ -451,12 +319,7 @@ and an optional result value.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-struct Cacher<T>
-    where T: Fn(u32) -> u32
-{
-    calculation: T,
-    value: Option<u32>,
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-09/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-9: Defining a `Cacher` struct that holds a
@@ -486,34 +349,7 @@ The logic around the `value` field we’ve just described is defined in Listing
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# struct Cacher<T>
-#     where T: Fn(u32) -> u32
-# {
-#     calculation: T,
-#     value: Option<u32>,
-# }
-#
-impl<T> Cacher<T>
-    where T: Fn(u32) -> u32
-{
-    fn new(calculation: T) -> Cacher<T> {
-        Cacher {
-            calculation,
-            value: None,
-        }
-    }
-
-    fn value(&mut self, arg: u32) -> u32 {
-        match self.value {
-            Some(v) => v,
-            None => {
-                let v = (self.calculation)(arg);
-                self.value = Some(v);
-                v
-            },
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-10/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-10: The caching logic of `Cacher`</span>
@@ -544,65 +380,7 @@ Listing 13-11 shows how we can use this `Cacher` struct in the function
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::thread;
-# use std::time::Duration;
-#
-# struct Cacher<T>
-#     where T: Fn(u32) -> u32
-# {
-#     calculation: T,
-#     value: Option<u32>,
-# }
-#
-# impl<T> Cacher<T>
-#     where T: Fn(u32) -> u32
-# {
-#     fn new(calculation: T) -> Cacher<T> {
-#         Cacher {
-#             calculation,
-#             value: None,
-#         }
-#     }
-#
-#     fn value(&mut self, arg: u32) -> u32 {
-#         match self.value {
-#             Some(v) => v,
-#             None => {
-#                 let v = (self.calculation)(arg);
-#                 self.value = Some(v);
-#                 v
-#             },
-#         }
-#     }
-# }
-#
-fn generate_workout(intensity: u32, random_number: u32) {
-    let mut expensive_result = Cacher::new(|num| {
-        println!("calculating slowly...");
-        thread::sleep(Duration::from_secs(2));
-        num
-    });
-
-    if intensity < 25 {
-        println!(
-            "Today, do {} pushups!",
-            expensive_result.value(intensity)
-        );
-        println!(
-            "Next, do {} situps!",
-            expensive_result.value(intensity)
-        );
-    } else {
-        if random_number == 3 {
-            println!("Take a break today! Remember to stay hydrated!");
-        } else {
-            println!(
-                "Today, run for {} minutes!",
-                expensive_result.value(intensity)
-            );
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-11/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-11: Using `Cacher` in the `generate_workout`
@@ -634,15 +412,7 @@ same value for the parameter `arg` to the `value` method. That is, this test of
 `Cacher` will fail:
 
 ```rust,ignore,panics
-#[test]
-fn call_with_different_values() {
-    let mut c = Cacher::new(|a| a);
-
-    let v1 = c.value(1);
-    let v2 = c.value(2);
-
-    assert_eq!(v2, 2);
-}
+{{#rustdoc_include ../listings/ch13-functional-features/no-listing-01-failing-cacher-test/src/lib.rs:here}}
 ```
 
 This test creates a new `Cacher` instance with a closure that returns the value
@@ -654,9 +424,7 @@ Run this test with the `Cacher` implementation in Listing 13-9 and Listing
 13-10, and the test will fail on the `assert_eq!` with this message:
 
 ```text
-thread 'call_with_different_values' panicked at 'assertion failed: `(left == right)`
-  left: `1`,
- right: `2`', src/main.rs
+{{#include ../listings/ch13-functional-features/no-listing-01-failing-cacher-test/output.txt}}
 ```
 
 The problem is that the first time we called `c.value` with 1, the `Cacher`
@@ -690,15 +458,7 @@ that uses the `x` variable from the closure’s surrounding environment.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let x = 4;
-
-    let equal_to_x = |z| z == x;
-
-    let y = 4;
-
-    assert!(equal_to_x(y));
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-12/src/main.rs}}
 ```
 
 <span class="caption">Listing 13-12: Example of a closure that refers to a
@@ -714,26 +474,13 @@ code won’t compile:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let x = 4;
-
-    fn equal_to_x(z: i32) -> bool { z == x }
-
-    let y = 4;
-
-    assert!(equal_to_x(y));
-}
+{{#rustdoc_include ../listings/ch13-functional-features/no-listing-02-functions-cant-capture/src/main.rs}}
 ```
 
 We get an error:
 
 ```text
-error[E0434]: can't capture dynamic environment in a fn item; use the || { ...
-} closure form instead
- --> src/main.rs
-  |
-4 |     fn equal_to_x(z: i32) -> bool { z == x }
-  |                                          ^
+{{#include ../listings/ch13-functional-features/no-listing-02-functions-cant-capture/output.txt}}
 ```
 
 The compiler even reminds us that this only works with closures!
@@ -780,33 +527,13 @@ yet compile.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let x = vec![1, 2, 3];
-
-    let equal_to_x = move |z| z == x;
-
-    println!("can't use x here: {:?}", x);
-
-    let y = vec![1, 2, 3];
-
-    assert!(equal_to_x(y));
-}
+{{#rustdoc_include ../listings/ch13-functional-features/no-listing-03-move-closures/src/main.rs}}
 ```
 
 We receive the following error:
 
 ```text
-error[E0382]: use of moved value: `x`
- --> src/main.rs:6:40
-  |
-4 |     let equal_to_x = move |z| z == x;
-  |                      -------- value moved (into closure) here
-5 |
-6 |     println!("can't use x here: {:?}", x);
-  |                                        ^ value used here after move
-  |
-  = note: move occurs because `x` has type `std::vec::Vec<i32>`, which does not
-  implement the `Copy` trait
+{{#include ../listings/ch13-functional-features/no-listing-03-move-closures/output.txt}}
 ```
 
 The `x` value is moved into the closure when the closure is defined, because we
diff --git a/src/ch13-02-iterators.md b/src/ch13-02-iterators.md
index 493c3696..247d12a3 100644
--- a/src/ch13-02-iterators.md
+++ b/src/ch13-02-iterators.md
@@ -12,9 +12,7 @@ the `iter` method defined on `Vec<T>`. This code by itself doesn’t do anything
 useful.
 
 ```rust
-let v1 = vec![1, 2, 3];
-
-let v1_iter = v1.iter();
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-13/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-13: Creating an iterator</span>
@@ -30,13 +28,7 @@ called using the iterator in `v1_iter`, each element in the iterator is used in
 one iteration of the loop, which prints out each value.
 
 ```rust
-let v1 = vec![1, 2, 3];
-
-let v1_iter = v1.iter();
-
-for val in v1_iter {
-    println!("Got: {}", val);
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-14/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-14: Using an iterator in a `for` loop</span>
@@ -86,17 +78,7 @@ from the vector.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-#[test]
-fn iterator_demonstration() {
-    let v1 = vec![1, 2, 3];
-
-    let mut v1_iter = v1.iter();
-
-    assert_eq!(v1_iter.next(), Some(&1));
-    assert_eq!(v1_iter.next(), Some(&2));
-    assert_eq!(v1_iter.next(), Some(&3));
-    assert_eq!(v1_iter.next(), None);
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-15/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 13-15: Calling the `next` method on an
@@ -135,16 +117,7 @@ test illustrating a use of the `sum` method:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-#[test]
-fn iterator_sum() {
-    let v1 = vec![1, 2, 3];
-
-    let v1_iter = v1.iter();
-
-    let total: i32 = v1_iter.sum();
-
-    assert_eq!(total, 6);
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-16/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 13-16: Calling the `sum` method to get the total
@@ -169,9 +142,7 @@ incremented by 1. However, this code produces a warning:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,not_desired_behavior
-let v1: Vec<i32> = vec![1, 2, 3];
-
-v1.iter().map(|x| x + 1);
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-17/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-17: Calling the iterator adaptor `map` to
@@ -180,14 +151,7 @@ create a new iterator</span>
 The warning we get is this:
 
 ```text
-warning: unused `std::iter::Map` which must be used: iterator adaptors are lazy
-and do nothing unless consumed
- --> src/main.rs:4:5
-  |
-4 |     v1.iter().map(|x| x + 1);
-  |     ^^^^^^^^^^^^^^^^^^^^^^^^^
-  |
-  = note: #[warn(unused_must_use)] on by default
+{{#include ../listings/ch13-functional-features/listing-13-17/output.txt}}
 ```
 
 The code in Listing 13-17 doesn’t do anything; the closure we’ve specified
@@ -205,11 +169,7 @@ containing each item from the original vector incremented by 1.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-let v1: Vec<i32> = vec![1, 2, 3];
-
-let v2: Vec<_> = v1.iter().map(|x| x + 1).collect();
-
-assert_eq!(v2, vec![2, 3, 4]);
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-18/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-18: Calling the `map` method to create a new
@@ -237,36 +197,7 @@ instances. It will return only shoes that are the specified size.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-#[derive(PartialEq, Debug)]
-struct Shoe {
-    size: u32,
-    style: String,
-}
-
-fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
-    shoes.into_iter()
-        .filter(|s| s.size == shoe_size)
-        .collect()
-}
-
-#[test]
-fn filters_by_size() {
-    let shoes = vec![
-        Shoe { size: 10, style: String::from("sneaker") },
-        Shoe { size: 13, style: String::from("sandal") },
-        Shoe { size: 10, style: String::from("boot") },
-    ];
-
-    let in_my_size = shoes_in_my_size(shoes, 10);
-
-    assert_eq!(
-        in_my_size,
-        vec![
-            Shoe { size: 10, style: String::from("sneaker") },
-            Shoe { size: 10, style: String::from("boot") },
-        ]
-    );
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-19/src/lib.rs}}
 ```
 
 <span class="caption">Listing 13-19: Using the `filter` method with a closure
@@ -311,15 +242,7 @@ Listing 13-20 has the definition of the `Counter` struct and an associated
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-struct Counter {
-    count: u32,
-}
-
-impl Counter {
-    fn new() -> Counter {
-        Counter { count: 0 }
-    }
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-20/src/lib.rs}}
 ```
 
 <span class="caption">Listing 13-20: Defining the `Counter` struct and a `new`
@@ -339,23 +262,7 @@ iterator is used, as shown in Listing 13-21:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# struct Counter {
-#     count: u32,
-# }
-#
-impl Iterator for Counter {
-    type Item = u32;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.count += 1;
-
-        if self.count < 6 {
-            Some(self.count)
-        } else {
-            None
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-21/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 13-21: Implementing the `Iterator` trait on our
@@ -380,35 +287,7 @@ with the iterator created from a vector in Listing 13-15.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# struct Counter {
-#     count: u32,
-# }
-#
-# impl Iterator for Counter {
-#     type Item = u32;
-#
-#     fn next(&mut self) -> Option<Self::Item> {
-#         self.count += 1;
-#
-#         if self.count < 6 {
-#             Some(self.count)
-#         } else {
-#             None
-#         }
-#     }
-# }
-#
-#[test]
-fn calling_next_directly() {
-    let mut counter = Counter::new();
-
-    assert_eq!(counter.next(), Some(1));
-    assert_eq!(counter.next(), Some(2));
-    assert_eq!(counter.next(), Some(3));
-    assert_eq!(counter.next(), Some(4));
-    assert_eq!(counter.next(), Some(5));
-    assert_eq!(counter.next(), None);
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-22/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 13-22: Testing the functionality of the `next`
@@ -433,41 +312,7 @@ together, we could do so, as shown in the test in Listing 13-23:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# struct Counter {
-#     count: u32,
-# }
-#
-# impl Counter {
-#     fn new() -> Counter {
-#         Counter { count: 0 }
-#     }
-# }
-#
-# impl Iterator for Counter {
-#     // Our iterator will produce u32s
-#     type Item = u32;
-#
-#     fn next(&mut self) -> Option<Self::Item> {
-#         // increment our count. This is why we started at zero.
-#         self.count += 1;
-#
-#         // check to see if we've finished counting or not.
-#         if self.count < 6 {
-#             Some(self.count)
-#         } else {
-#             None
-#         }
-#     }
-# }
-#
-#[test]
-fn using_other_iterator_trait_methods() {
-    let sum: u32 = Counter::new().zip(Counter::new().skip(1))
-                                 .map(|(a, b)| a * b)
-                                 .filter(|x| x % 3 == 0)
-                                 .sum();
-    assert_eq!(18, sum);
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-23/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 13-23: Using a variety of `Iterator` trait
diff --git a/src/ch13-03-improving-our-io-project.md b/src/ch13-03-improving-our-io-project.md
index e6ee68dc..0473b2cb 100644
--- a/src/ch13-03-improving-our-io-project.md
+++ b/src/ch13-03-improving-our-io-project.md
@@ -5,7 +5,6 @@ Chapter 12 by using iterators to make places in the code clearer and more
 concise. Let’s look at how iterators can improve our implementation of the
 `Config::new` function and the `search` function.
 
-
 ### Removing a `clone` Using an Iterator
 
 In Listing 12-6, we added code that took a slice of `String` values and created
@@ -17,20 +16,7 @@ Listing 12-23:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-impl Config {
-    pub fn new(args: &[String]) -> Result<Config, &'static str> {
-        if args.len() < 3 {
-            return Err("not enough arguments");
-        }
-
-        let query = args[1].clone();
-        let filename = args[2].clone();
-
-        let case_sensitive = env::var("CASE_INSENSITIVE").is_err();
-
-        Ok(Config { query, filename, case_sensitive })
-    }
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-12-23-reproduced/src/lib.rs:ch13}}
 ```
 
 <span class="caption">Listing 13-24: Reproduction of the `Config::new` function
@@ -61,16 +47,7 @@ Open your I/O project’s *src/main.rs* file, which should look like this:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-fn main() {
-    let args: Vec<String> = env::args().collect();
-
-    let config = Config::new(&args).unwrap_or_else(|err| {
-        eprintln!("Problem parsing arguments: {}", err);
-        process::exit(1);
-    });
-
-    // --snip--
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-12-24-reproduced/src/main.rs:ch13}}
 ```
 
 We’ll change the start of the `main` function that we had in Listing 12-24 to
@@ -80,14 +57,7 @@ well.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-fn main() {
-    let config = Config::new(env::args()).unwrap_or_else(|err| {
-        eprintln!("Problem parsing arguments: {}", err);
-        process::exit(1);
-    });
-
-    // --snip--
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-25/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 13-25: Passing the return value of `env::args` to
@@ -106,9 +76,7 @@ body.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-impl Config {
-    pub fn new(mut args: std::env::Args) -> Result<Config, &'static str> {
-        // --snip--
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-26/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 13-26: Updating the signature of `Config::new` to
@@ -131,34 +99,7 @@ Listing 12-23 to use the `next` method:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# fn main() {}
-# use std::env;
-#
-# struct Config {
-#     query: String,
-#     filename: String,
-#     case_sensitive: bool,
-# }
-#
-impl Config {
-    pub fn new(mut args: std::env::Args) -> Result<Config, &'static str> {
-        args.next();
-
-        let query = match args.next() {
-            Some(arg) => arg,
-            None => return Err("Didn't get a query string"),
-        };
-
-        let filename = match args.next() {
-            Some(arg) => arg,
-            None => return Err("Didn't get a file name"),
-        };
-
-        let case_sensitive = env::var("CASE_INSENSITIVE").is_err();
-
-        Ok(Config { query, filename, case_sensitive })
-    }
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-27/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 13-27: Changing the body of `Config::new` to use
@@ -180,17 +121,7 @@ project, which is reproduced here in Listing 13-28 as it was in Listing 12-19:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-    let mut results = Vec::new();
-
-    for line in contents.lines() {
-        if line.contains(query) {
-            results.push(line);
-        }
-    }
-
-    results
-}
+{{#rustdoc_include ../listings/ch12-an-io-project/listing-12-19/src/lib.rs:ch13}}
 ```
 
 <span class="caption">Listing 13-28: The implementation of the `search`
@@ -206,11 +137,7 @@ concurrent access to the `results` vector. Listing 13-29 shows this change:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-    contents.lines()
-        .filter(|line| line.contains(query))
-        .collect()
-}
+{{#rustdoc_include ../listings/ch13-functional-features/listing-13-29/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 13-29: Using iterator adaptor methods in the
diff --git a/src/ch14-01-release-profiles.md b/src/ch14-01-release-profiles.md
index ab240051..24a36aef 100644
--- a/src/ch14-01-release-profiles.md
+++ b/src/ch14-01-release-profiles.md
@@ -12,11 +12,18 @@ and the `release` profile has good defaults for release builds.
 
 These profile names might be familiar from the output of your builds:
 
+<!-- manual-regeneration
+anywhere, run:
+cargo build
+cargo build --release
+and ensure output below is accurate
+-->
+
 ```text
 $ cargo build
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
 $ cargo build --release
-    Finished release [optimized] target(s) in 0.0 secs
+    Finished release [optimized] target(s) in 0.0s
 ```
 
 The `dev` and `release` shown in this build output indicate that the compiler
diff --git a/src/ch14-02-publishing-to-crates-io.md b/src/ch14-02-publishing-to-crates-io.md
index f1b10f7c..4e5c2206 100644
--- a/src/ch14-02-publishing-to-crates-io.md
+++ b/src/ch14-02-publishing-to-crates-io.md
@@ -29,19 +29,7 @@ for an `add_one` function in a crate named `my_crate`:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-/// Adds one to the number given.
-///
-/// # Examples
-///
-/// ```
-/// let arg = 5;
-/// let answer = my_crate::add_one(arg);
-///
-/// assert_eq!(6, answer);
-/// ```
-pub fn add_one(x: i32) -> i32 {
-    x + 1
-}
+{{#rustdoc_include ../listings/ch14-more-about-cargo/listing-14-01/src/lib.rs}}
 ```
 
 <span class="caption">Listing 14-1: A documentation comment for a
@@ -96,6 +84,12 @@ that don’t work because the code has changed since the documentation was
 written. If we run `cargo test` with the documentation for the `add_one`
 function from Listing 14-1, we will see a section in the test results like this:
 
+<!-- manual-regeneration
+cd listings/ch14-more-about-cargo/listing-14-01/
+cargo test
+copy just the doc-tests section below
+-->
+
 ```text
    Doc-tests my_crate
 
@@ -125,13 +119,7 @@ shown in Listing 14-2:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-//! # My Crate
-//!
-//! `my_crate` is a collection of utilities to make performing certain
-//! calculations more convenient.
-
-/// Adds one to the number given.
-// --snip--
+{{#rustdoc_include ../listings/ch14-more-about-cargo/listing-14-02/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 14-2: Documentation for the `my_crate` crate as a
@@ -189,37 +177,7 @@ function named `mix`, as shown in Listing 14-3:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-//! # Art
-//!
-//! A library for modeling artistic concepts.
-
-pub mod kinds {
-    /// The primary colors according to the RYB color model.
-    pub enum PrimaryColor {
-        Red,
-        Yellow,
-        Blue,
-    }
-
-    /// The secondary colors according to the RYB color model.
-    pub enum SecondaryColor {
-        Orange,
-        Green,
-        Purple,
-    }
-}
-
-pub mod utils {
-    use crate::kinds::*;
-
-    /// Combines two primary colors in equal amounts to create
-    /// a secondary color.
-    pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
-        // --snip--
-#         SecondaryColor::Orange
-    }
-}
-# fn main() {}
+{{#rustdoc_include ../listings/ch14-more-about-cargo/listing-14-03/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 14-3: An `art` library with items organized into
@@ -245,14 +203,7 @@ currently defined. Listing 14-4 shows an example of a crate that uses the
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use art::kinds::PrimaryColor;
-use art::utils::mix;
-
-fn main() {
-    let red = PrimaryColor::Red;
-    let yellow = PrimaryColor::Yellow;
-    mix(red, yellow);
-}
+{{#rustdoc_include ../listings/ch14-more-about-cargo/listing-14-04/src/main.rs}}
 ```
 
 <span class="caption">Listing 14-4: A crate using the `art` crate’s items with
@@ -276,21 +227,7 @@ items at the top level, as shown in Listing 14-5:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-//! # Art
-//!
-//! A library for modeling artistic concepts.
-
-pub use self::kinds::PrimaryColor;
-pub use self::kinds::SecondaryColor;
-pub use self::utils::mix;
-
-pub mod kinds {
-    // --snip--
-}
-
-pub mod utils {
-    // --snip--
-}
+{{#rustdoc_include ../listings/ch14-more-about-cargo/listing-14-05/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 14-5: Adding `pub use` statements to re-export
@@ -312,12 +249,7 @@ structure in Listing 14-5, as shown in Listing 14-6:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use art::PrimaryColor;
-use art::mix;
-
-fn main() {
-    // --snip--
-}
+{{#rustdoc_include ../listings/ch14-more-about-cargo/listing-14-06/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 14-6: A program using the re-exported items from
@@ -380,13 +312,19 @@ name = "guessing_game"
 Even if you’ve chosen a unique name, when you run `cargo publish` to publish
 the crate at this point, you’ll get a warning and then an error:
 
+<!-- manual-regeneration
+cd listings/ch14-more-about-cargo/listing-14-01/
+cargo publish
+copy just the relevant lines below
+-->
+
 ```text
 $ cargo publish
-    Updating registry `https://github.com/rust-lang/crates.io-index`
-warning: manifest has no description, license, license-file, documentation,
-homepage or repository.
+    Updating crates.io index
+warning: manifest has no description, license, license-file, documentation, homepage or repository.
+See https://doc.rust-lang.org/cargo/reference/manifest.html#package-metadata for more info.
 --snip--
-error: api errors: missing or empty metadata fields: description, license.
+error: api errors (status 200 OK): missing or empty metadata fields: description, license. Please see https://doc.rust-lang.org/cargo/reference/manifest.html for how to upload metadata
 ```
 
 The reason is that you’re missing some crucial information: a description and
@@ -461,15 +399,21 @@ no limit to the number of crate versions you can publish.
 
 Run the `cargo publish` command again. It should succeed now:
 
+<!-- manual-regeneration
+go to some valid crate, publish a new version
+cargo publish
+copy just the relevant lines below
+-->
+
 ```text
 $ cargo publish
- Updating registry `https://github.com/rust-lang/crates.io-index`
-Packaging guessing_game v0.1.0 (file:///projects/guessing_game)
-Verifying guessing_game v0.1.0 (file:///projects/guessing_game)
-Compiling guessing_game v0.1.0
+    Updating crates.io index
+   Packaging guessing_game v0.1.0 (file:///projects/guessing_game)
+   Verifying guessing_game v0.1.0 (file:///projects/guessing_game)
+   Compiling guessing_game v0.1.0
 (file:///projects/guessing_game/target/package/guessing_game-0.1.0)
- Finished dev [unoptimized + debuginfo] target(s) in 0.19 secs
-Uploading guessing_game v0.1.0 (file:///projects/guessing_game)
+    Finished dev [unoptimized + debuginfo] target(s) in 0.19s
+   Uploading guessing_game v0.1.0 (file:///projects/guessing_game)
 ```
 
 Congratulations! You’ve now shared your code with the Rust community, and
diff --git a/src/ch14-03-cargo-workspaces.md b/src/ch14-03-cargo-workspaces.md
index a662ac21..070a523a 100644
--- a/src/ch14-03-cargo-workspaces.md
+++ b/src/ch14-03-cargo-workspaces.md
@@ -33,19 +33,22 @@ by specifying the path to our binary crate; in this case, that path is *adder*:
 <span class="filename">Filename: Cargo.toml</span>
 
 ```toml
-[workspace]
-
-members = [
-    "adder",
-]
+{{#include ../listings/ch14-more-about-cargo/no-listing-01-workspace-with-adder-crate/add/Cargo.toml}}
 ```
 
 Next, we’ll create the `adder` binary crate by running `cargo new` within the
 *add* directory:
 
+<!-- manual-regeneration
+cd listings/ch14-more-about-cargo/output-only-01-adder-crate/add
+rm -rf adder
+cargo new adder
+copy output below
+-->
+
 ```text
 $ cargo new adder
-     Created binary (application) `adder` project
+     Created binary (application) `adder` package
 ```
 
 At this point, we can build the workspace by running `cargo build`. The files
@@ -81,19 +84,21 @@ Change the top-level *Cargo.toml* to specify the *add-one* path in the
 <span class="filename">Filename: Cargo.toml</span>
 
 ```toml
-[workspace]
-
-members = [
-    "adder",
-    "add-one",
-]
+{{#include ../listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/Cargo.toml}}
 ```
 
 Then generate a new library crate named `add-one`:
 
+<!-- manual-regeneration
+cd listings/ch14-more-about-cargo/output-only-02-add-one/add
+rm -rf add-one
+cargo new add-one --lib
+copy output below
+-->
+
 ```text
 $ cargo new add-one --lib
-     Created library `add-one` project
+     Created library `add-one` package
 ```
 
 Your *add* directory should now have these directories and files:
@@ -117,9 +122,7 @@ In the *add-one/src/lib.rs* file, let’s add an `add_one` function:
 <span class="filename">Filename: add-one/src/lib.rs</span>
 
 ```rust
-pub fn add_one(x: i32) -> i32 {
-    x + 1
-}
+{{#rustdoc_include ../listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/add-one/src/lib.rs}}
 ```
 
 Now that we have a library crate in the workspace, we can have the binary crate
@@ -129,9 +132,7 @@ dependency on `add-one` to *adder/Cargo.toml*.
 <span class="filename">Filename: adder/Cargo.toml</span>
 
 ```toml
-[dependencies]
-
-add-one = { path = "../add-one" }
+{{#include ../listings/ch14-more-about-cargo/no-listing-02-workspace-with-two-crates/add/adder/Cargo.toml:7:9}}
 ```
 
 Cargo doesn’t assume that crates in a workspace will depend on each other, so
@@ -145,12 +146,7 @@ function to call the `add_one` function, as in Listing 14-7.
 <span class="filename">Filename: adder/src/main.rs</span>
 
 ```rust,ignore
-use add_one;
-
-fn main() {
-    let num = 10;
-    println!("Hello, world! {} plus one is {}!", num, add_one::add_one(num));
-}
+{{#rustdoc_include ../listings/ch14-more-about-cargo/listing-14-07/add/adder/src/main.rs}}
 ```
 
 <span class="caption">Listing 14-7: Using the `add-one` library crate from the
@@ -159,20 +155,32 @@ fn main() {
 Let’s build the workspace by running `cargo build` in the top-level *add*
 directory!
 
+<!-- manual-regeneration
+cd listings/ch14-more-about-cargo/listing-14-07/add
+cargo build
+copy output below; the output updating script doesn't handle subdirectories in paths properly
+-->
+
 ```text
 $ cargo build
    Compiling add-one v0.1.0 (file:///projects/add/add-one)
    Compiling adder v0.1.0 (file:///projects/add/adder)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.68 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 0.68s
 ```
 
 To run the binary crate from the *add* directory, we need to specify which
 package in the workspace we want to use by using the `-p` argument and the
 package name with `cargo run`:
 
+<!-- manual-regeneration
+cd listings/ch14-more-about-cargo/listing-14-07/add
+cargo run -p adder
+copy output below; the output updating script doesn't handle subdirectories in paths properly
+-->
+
 ```text
 $ cargo run -p adder
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 0.0s
      Running `target/debug/adder`
 Hello, world! 10 plus one is 11!
 ```
@@ -201,14 +209,20 @@ crate:
 <span class="filename">Filename: add-one/Cargo.toml</span>
 
 ```toml
-[dependencies]
-rand = "0.5.5"
+{{#include ../listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/add-one/Cargo.toml:7:8}}
 ```
 
 We can now add `use rand;` to the *add-one/src/lib.rs* file, and building the
 whole workspace by running `cargo build` in the *add* directory will bring in
 and compile the `rand` crate:
 
+<!-- manual-regeneration
+cd listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add
+cargo build
+copy output below; the output updating script doesn't handle subdirectories in paths properly
+-->
+
+
 ```text
 $ cargo build
     Updating crates.io index
@@ -217,7 +231,7 @@ $ cargo build
    Compiling rand v0.5.5
    Compiling add-one v0.1.0 (file:///projects/add/add-one)
    Compiling adder v0.1.0 (file:///projects/add/adder)
-    Finished dev [unoptimized + debuginfo] target(s) in 10.18 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 10.18s
 ```
 
 The top-level *Cargo.lock* now contains information about the dependency of
@@ -226,14 +240,20 @@ workspace, we can’t use it in other crates in the workspace unless we add
 `rand` to their *Cargo.toml* files as well. For example, if we add `use rand;`
 to the *adder/src/main.rs* file for the `adder` crate, we’ll get an error:
 
+<!-- manual-regeneration
+cd listings/ch14-more-about-cargo/output-only-03-use-rand/add
+cargo build
+copy output below; the output updating script doesn't handle subdirectories in paths properly
+-->
+
 ```text
 $ cargo build
    Compiling adder v0.1.0 (file:///projects/add/adder)
-error: use of unstable library feature 'rand': use `rand` from crates.io (see
-issue #27703)
- --> adder/src/main.rs:1:1
+error[E0432]: unresolved import `rand`
+ --> adder/src/main.rs:1:5
   |
 1 | use rand;
+  |     ^^^^ no `rand` external crate
 ```
 
 To fix this, edit the *Cargo.toml* file for the `adder` crate and indicate that
@@ -253,28 +273,22 @@ within the `add_one` crate:
 <span class="filename">Filename: add-one/src/lib.rs</span>
 
 ```rust
-pub fn add_one(x: i32) -> i32 {
-    x + 1
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn it_works() {
-        assert_eq!(3, add_one(2));
-    }
-}
+{{#rustdoc_include ../listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add/add-one/src/lib.rs}}
 ```
 
 Now run `cargo test` in the top-level *add* directory:
 
+<!-- manual-regeneration
+cd listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add
+cargo test
+copy output below; the output updating script doesn't handle subdirectories in paths properly
+-->
+
 ```text
 $ cargo test
    Compiling add-one v0.1.0 (file:///projects/add/add-one)
    Compiling adder v0.1.0 (file:///projects/add/adder)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.27 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 0.27s
      Running target/debug/deps/add_one-f0253159197f7841
 
 running 1 test
@@ -305,9 +319,15 @@ We can also run tests for one particular crate in a workspace from the
 top-level directory by using the `-p` flag and specifying the name of the crate
 we want to test:
 
+<!-- manual-regeneration
+cd listings/ch14-more-about-cargo/no-listing-04-workspace-with-tests/add
+cargo test -p add-one
+copy output below; the output updating script doesn't handle subdirectories in paths properly
+-->
+
 ```text
 $ cargo test -p add-one
-    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 0.00s
      Running target/debug/deps/add_one-b3235fea9a156f74
 
 running 1 test
diff --git a/src/ch14-04-installing-binaries.md b/src/ch14-04-installing-binaries.md
index a654a371..5f9b43ed 100644
--- a/src/ch14-04-installing-binaries.md
+++ b/src/ch14-04-installing-binaries.md
@@ -21,17 +21,25 @@ For example, in Chapter 12 we mentioned that there’s a Rust implementation of
 the `grep` tool called `ripgrep` for searching files. If we want to install
 `ripgrep`, we can run the following:
 
+<!-- manual-regeneration
+cargo install something
+use you don't have, copy relevant output below
+-->
+
 ```text
 $ cargo install ripgrep
-Updating registry `https://github.com/rust-lang/crates.io-index`
- Downloading ripgrep v0.3.2
- --snip--
-   Compiling ripgrep v0.3.2
-    Finished release [optimized + debuginfo] target(s) in 97.91 secs
+    Updating crates.io index
+  Downloaded ripgrep v11.0.2
+  Downloaded 1 crate (243.3 KB) in 0.88s
+  Installing ripgrep v11.0.2
+--snip--
+   Compiling ripgrep v11.0.2
+    Finished release [optimized + debuginfo] target(s) in 3m 10s
   Installing ~/.cargo/bin/rg
+   Installed package `ripgrep v11.0.2` (executable `rg`)
 ```
 
-The last line of the output shows the location and the name of the installed
-binary, which in the case of `ripgrep` is `rg`. As long as the installation
-directory is in your `$PATH`, as mentioned previously, you can then run `rg
---help` and start using a faster, rustier tool for searching files!
+The second-to-last line of the output shows the location and the name of the
+installed binary, which in the case of `ripgrep` is `rg`. As long as the
+installation directory is in your `$PATH`, as mentioned previously, you can
+then run `rg --help` and start using a faster, rustier tool for searching files!
diff --git a/src/ch15-01-box.md b/src/ch15-01-box.md
index 2b9a51b3..1605928d 100644
--- a/src/ch15-01-box.md
+++ b/src/ch15-01-box.md
@@ -38,10 +38,7 @@ Listing 15-1 shows how to use a box to store an `i32` value on the heap:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let b = Box::new(5);
-    println!("b = {}", b);
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-01/src/main.rs}}
 ```
 
 <span class="caption">Listing 15-1: Storing an `i32` value on the heap using a
@@ -109,10 +106,7 @@ we’ll demonstrate.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-enum List {
-    Cons(i32, List),
-    Nil,
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-02/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-2: The first attempt at defining an enum to
@@ -129,11 +123,7 @@ Listing 15-3:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-use crate::List::{Cons, Nil};
-
-fn main() {
-    let list = Cons(1, Cons(2, Cons(3, Nil)));
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-03/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-3: Using the `List` enum to store the list `1,
@@ -148,16 +138,7 @@ If we try to compile the code in Listing 15-3, we get the error shown in
 Listing 15-4:
 
 ```text
-error[E0072]: recursive type `List` has infinite size
- --> src/main.rs:1:1
-  |
-1 | enum List {
-  | ^^^^^^^^^ recursive type has infinite size
-2 |     Cons(i32, List),
-  |               ----- recursive without indirection
-  |
-  = help: insert indirection (e.g., a `Box`, `Rc`, or `&`) at some point to
-  make `List` representable
+{{#include ../listings/ch15-smart-pointers/listing-15-03/output.txt}}
 ```
 
 <span class="caption">Listing 15-4: The error we get when attempting to define
@@ -176,12 +157,7 @@ Recall the `Message` enum we defined in Listing 6-2 when we discussed enum
 definitions in Chapter 6:
 
 ```rust
-enum Message {
-    Quit,
-    Move { x: i32, y: i32 },
-    Write(String),
-    ChangeColor(i32, i32, i32),
-}
+{{#rustdoc_include ../listings/ch06-enums-and-pattern-matching/listing-06-02/src/main.rs:here}}
 ```
 
 To determine how much space to allocate for a `Message` value, Rust goes
@@ -211,9 +187,12 @@ Rust can’t figure out how much space to allocate for recursively defined types
 so the compiler gives the error in Listing 15-4. But the error does include
 this helpful suggestion:
 
+<!-- manual-regeneration
+after doing automatic regeneration, look at listings/ch15-smart-pointers/listing-15-03/output.txt and copy the relevant line
+-->
+
 ```text
-  = help: insert indirection (e.g., a `Box`, `Rc`, or `&`) at some point to
-  make `List` representable
+  = help: insert indirection (e.g., a `Box`, `Rc`, or `&`) at some point to make `List` representable
 ```
 
 In this suggestion, “indirection” means that instead of storing a value
@@ -235,19 +214,7 @@ of the `List` in Listing 15-3 to the code in Listing 15-5, which will compile:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-enum List {
-    Cons(i32, Box<List>),
-    Nil,
-}
-
-use crate::List::{Cons, Nil};
-
-fn main() {
-    let list = Cons(1,
-        Box::new(Cons(2,
-            Box::new(Cons(3,
-                Box::new(Nil))))));
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-05/src/main.rs}}
 ```
 
 <span class="caption">Listing 15-5: Definition of `List` that uses `Box<T>` in
diff --git a/src/ch15-02-deref.md b/src/ch15-02-deref.md
index e0fae5b1..63477c28 100644
--- a/src/ch15-02-deref.md
+++ b/src/ch15-02-deref.md
@@ -29,13 +29,7 @@ reference to the data:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let x = 5;
-    let y = &x;
-
-    assert_eq!(5, x);
-    assert_eq!(5, *y);
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-06/src/main.rs}}
 ```
 
 <span class="caption">Listing 15-6: Using the dereference operator to follow a
@@ -52,14 +46,7 @@ If we tried to write `assert_eq!(5, y);` instead, we would get this compilation
 error:
 
 ```text
-error[E0277]: can't compare `{integer}` with `&{integer}`
- --> src/main.rs:6:5
-  |
-6 |     assert_eq!(5, y);
-  |     ^^^^^^^^^^^^^^^^^ no implementation for `{integer} == &{integer}`
-  |
-  = help: the trait `std::cmp::PartialEq<&{integer}>` is not implemented for
-  `{integer}`
+{{#include ../listings/ch15-smart-pointers/output-only-01-comparing-to-reference/output.txt}}
 ```
 
 Comparing a number and a reference to a number isn’t allowed because they’re
@@ -74,13 +61,7 @@ reference; the dereference operator will work as shown in Listing 15-7:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let x = 5;
-    let y = Box::new(x);
-
-    assert_eq!(5, x);
-    assert_eq!(5, *y);
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-07/src/main.rs}}
 ```
 
 <span class="caption">Listing 15-7: Using the dereference operator on a
@@ -107,13 +88,7 @@ Listing 15-8 defines a `MyBox<T>` type in the same way. We’ll also define a
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-struct MyBox<T>(T);
-
-impl<T> MyBox<T> {
-    fn new(x: T) -> MyBox<T> {
-        MyBox(x)
-    }
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-08/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-8: Defining a `MyBox<T>` type</span>
@@ -131,13 +106,7 @@ code in Listing 15-9 won’t compile because Rust doesn’t know how to derefere
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let x = 5;
-    let y = MyBox::new(x);
-
-    assert_eq!(5, x);
-    assert_eq!(5, *y);
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-09/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-9: Attempting to use `MyBox<T>` in the same
@@ -146,11 +115,7 @@ way we used references and `Box<T>`</span>
 Here’s the resulting compilation error:
 
 ```text
-error[E0614]: type `MyBox<{integer}>` cannot be dereferenced
-  --> src/main.rs:14:19
-   |
-14 |     assert_eq!(5, *y);
-   |                   ^^
+{{#include ../listings/ch15-smart-pointers/listing-15-09/output.txt}}
 ```
 
 Our `MyBox<T>` type can’t be dereferenced because we haven’t implemented that
@@ -168,16 +133,7 @@ contains an implementation of `Deref` to add to the definition of `MyBox`:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::ops::Deref;
-
-# struct MyBox<T>(T);
-impl<T> Deref for MyBox<T> {
-    type Target = T;
-
-    fn deref(&self) -> &T {
-        &self.0
-    }
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-10/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-10: Implementing `Deref` on `MyBox<T>`</span>
@@ -247,9 +203,7 @@ parameter:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn hello(name: &str) {
-    println!("Hello, {}!", name);
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-11/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-11: A `hello` function that has the parameter
@@ -262,32 +216,7 @@ with a reference to a value of type `MyBox<String>`, as shown in Listing 15-12:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::ops::Deref;
-#
-# struct MyBox<T>(T);
-#
-# impl<T> MyBox<T> {
-#     fn new(x: T) -> MyBox<T> {
-#         MyBox(x)
-#     }
-# }
-#
-# impl<T> Deref for MyBox<T> {
-#     type Target = T;
-#
-#     fn deref(&self) -> &T {
-#         &self.0
-#     }
-# }
-#
-# fn hello(name: &str) {
-#     println!("Hello, {}!", name);
-# }
-#
-fn main() {
-    let m = MyBox::new(String::from("Rust"));
-    hello(&m);
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-12/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-12: Calling `hello` with a reference to a
@@ -308,32 +237,7 @@ of type `&MyBox<String>`.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::ops::Deref;
-#
-# struct MyBox<T>(T);
-#
-# impl<T> MyBox<T> {
-#     fn new(x: T) -> MyBox<T> {
-#         MyBox(x)
-#     }
-# }
-#
-# impl<T> Deref for MyBox<T> {
-#     type Target = T;
-#
-#     fn deref(&self) -> &T {
-#         &self.0
-#     }
-# }
-#
-# fn hello(name: &str) {
-#     println!("Hello, {}!", name);
-# }
-#
-fn main() {
-    let m = MyBox::new(String::from("Rust"));
-    hello(&(*m)[..]);
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-13/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-13: The code we would have to write if Rust
diff --git a/src/ch15-03-drop.md b/src/ch15-03-drop.md
index 333e4e2c..8566f030 100644
--- a/src/ch15-03-drop.md
+++ b/src/ch15-03-drop.md
@@ -30,21 +30,7 @@ function.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-struct CustomSmartPointer {
-    data: String,
-}
-
-impl Drop for CustomSmartPointer {
-    fn drop(&mut self) {
-        println!("Dropping CustomSmartPointer with data `{}`!", self.data);
-    }
-}
-
-fn main() {
-    let c = CustomSmartPointer { data: String::from("my stuff") };
-    let d = CustomSmartPointer { data: String::from("other stuff") };
-    println!("CustomSmartPointers created.");
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-14/src/main.rs}}
 ```
 
 <span class="caption">Listing 15-14: A `CustomSmartPointer` struct that
@@ -66,9 +52,7 @@ call the `drop` method explicitly.
 When we run this program, we’ll see the following output:
 
 ```text
-CustomSmartPointers created.
-Dropping CustomSmartPointer with data `other stuff`!
-Dropping CustomSmartPointer with data `my stuff`!
+{{#include ../listings/ch15-smart-pointers/listing-15-14/output.txt}}
 ```
 
 Rust automatically called `drop` for us when our instances went out of scope,
@@ -96,12 +80,7 @@ compiler error:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let c = CustomSmartPointer { data: String::from("some data") };
-    println!("CustomSmartPointer created.");
-    c.drop();
-    println!("CustomSmartPointer dropped before the end of main.");
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-15/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-15: Attempting to call the `drop` method from
@@ -110,11 +89,7 @@ the `Drop` trait manually to clean up early</span>
 When we try to compile this code, we’ll get this error:
 
 ```text
-error[E0040]: explicit use of destructor method
-  --> src/main.rs:14:7
-   |
-14 |     c.drop();
-   |       ^^^^ explicit destructor calls not allowed
+{{#include ../listings/ch15-smart-pointers/listing-15-15/output.txt}}
 ```
 
 This error message states that we’re not allowed to explicitly call `drop`. The
@@ -140,22 +115,7 @@ an argument. The function is in the prelude, so we can modify `main` in Listing
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# struct CustomSmartPointer {
-#     data: String,
-# }
-#
-# impl Drop for CustomSmartPointer {
-#     fn drop(&mut self) {
-#         println!("Dropping CustomSmartPointer with data `{}`!", self.data);
-#     }
-# }
-#
-fn main() {
-    let c = CustomSmartPointer { data: String::from("some data") };
-    println!("CustomSmartPointer created.");
-    drop(c);
-    println!("CustomSmartPointer dropped before the end of main.");
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-16/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-16: Calling `std::mem::drop` to explicitly
@@ -164,9 +124,7 @@ drop a value before it goes out of scope</span>
 Running this code will print the following:
 
 ```text
-CustomSmartPointer created.
-Dropping CustomSmartPointer with data `some data`!
-CustomSmartPointer dropped before the end of main.
+{{#include ../listings/ch15-smart-pointers/listing-15-16/output.txt}}
 ```
 
 The text ```Dropping CustomSmartPointer with data `some data`!``` is printed
diff --git a/src/ch15-04-rc.md b/src/ch15-04-rc.md
index 7ac901ba..8990ca04 100644
--- a/src/ch15-04-rc.md
+++ b/src/ch15-04-rc.md
@@ -51,20 +51,7 @@ won’t work, as shown in Listing 15-17:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-enum List {
-    Cons(i32, Box<List>),
-    Nil,
-}
-
-use crate::List::{Cons, Nil};
-
-fn main() {
-    let a = Cons(5,
-        Box::new(Cons(10,
-            Box::new(Nil))));
-    let b = Cons(3, Box::new(a));
-    let c = Cons(4, Box::new(a));
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-17/src/main.rs}}
 ```
 
 <span class="caption">Listing 15-17: Demonstrating we’re not allowed to have
@@ -73,16 +60,7 @@ two lists using `Box<T>` that try to share ownership of a third list</span>
 When we compile this code, we get this error:
 
 ```text
-error[E0382]: use of moved value: `a`
-  --> src/main.rs:13:30
-   |
-12 |     let b = Cons(3, Box::new(a));
-   |                              - value moved here
-13 |     let c = Cons(4, Box::new(a));
-   |                              ^ value used here after move
-   |
-   = note: move occurs because `a` has type `List`, which does not implement
-   the `Copy` trait
+{{#include ../listings/ch15-smart-pointers/listing-15-17/output.txt}}
 ```
 
 The `Cons` variants own the data they hold, so when we create the `b` list, `a`
@@ -110,19 +88,7 @@ it.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-enum List {
-    Cons(i32, Rc<List>),
-    Nil,
-}
-
-use crate::List::{Cons, Nil};
-use std::rc::Rc;
-
-fn main() {
-    let a = Rc::new(Cons(5, Rc::new(Cons(10, Rc::new(Nil)))));
-    let b = Cons(3, Rc::clone(&a));
-    let c = Cons(4, Rc::clone(&a));
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-18/src/main.rs}}
 ```
 
 <span class="caption">Listing 15-18: A definition of `List` that uses
@@ -156,25 +122,7 @@ then we can see how the reference count changes when `c` goes out of scope.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# enum List {
-#     Cons(i32, Rc<List>),
-#     Nil,
-# }
-#
-# use crate::List::{Cons, Nil};
-# use std::rc::Rc;
-#
-fn main() {
-    let a = Rc::new(Cons(5, Rc::new(Cons(10, Rc::new(Nil)))));
-    println!("count after creating a = {}", Rc::strong_count(&a));
-    let b = Cons(3, Rc::clone(&a));
-    println!("count after creating b = {}", Rc::strong_count(&a));
-    {
-        let c = Cons(4, Rc::clone(&a));
-        println!("count after creating c = {}", Rc::strong_count(&a));
-    }
-    println!("count after c goes out of scope = {}", Rc::strong_count(&a));
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-19/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-19: Printing the reference count</span>
@@ -189,10 +137,7 @@ type also has a `weak_count`; we’ll see what `weak_count` is used for in the
 This code prints the following:
 
 ```text
-count after creating a = 1
-count after creating b = 2
-count after creating c = 3
-count after c goes out of scope = 2
+{{#include ../listings/ch15-smart-pointers/listing-15-19/output.txt}}
 ```
 
 We can see that the `Rc<List>` in `a` has an initial reference count of 1; then
diff --git a/src/ch15-05-interior-mutability.md b/src/ch15-05-interior-mutability.md
index 34c002b2..959d3eb7 100644
--- a/src/ch15-05-interior-mutability.md
+++ b/src/ch15-05-interior-mutability.md
@@ -76,22 +76,13 @@ A consequence of the borrowing rules is that when you have an immutable value,
 you can’t borrow it mutably. For example, this code won’t compile:
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let x = 5;
-    let y = &mut x;
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/src/main.rs}}
 ```
 
 If you tried to compile this code, you’d get the following error:
 
 ```text
-error[E0596]: cannot borrow immutable local variable `x` as mutable
- --> src/main.rs:3:18
-  |
-2 |     let x = 5;
-  |         - consider changing this to `mut x`
-3 |     let y = &mut x;
-  |                  ^ cannot borrow mutably
+{{#include ../listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/output.txt}}
 ```
 
 However, there are situations in which it would be useful for a value to mutate
@@ -134,40 +125,7 @@ called `Messenger`. Listing 15-20 shows the library code:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub trait Messenger {
-    fn send(&self, msg: &str);
-}
-
-pub struct LimitTracker<'a, T: Messenger> {
-    messenger: &'a T,
-    value: usize,
-    max: usize,
-}
-
-impl<'a, T> LimitTracker<'a, T>
-    where T: Messenger {
-    pub fn new(messenger: &T, max: usize) -> LimitTracker<T> {
-        LimitTracker {
-            messenger,
-            value: 0,
-            max,
-        }
-    }
-
-    pub fn set_value(&mut self, value: usize) {
-        self.value = value;
-
-        let percentage_of_max = self.value as f64 / self.max as f64;
-
-        if percentage_of_max >= 1.0 {
-            self.messenger.send("Error: You are over your quota!");
-        } else if percentage_of_max >= 0.9 {
-             self.messenger.send("Urgent warning: You've used up over 90% of your quota!");
-        } else if percentage_of_max >= 0.75 {
-            self.messenger.send("Warning: You've used up over 75% of your quota!");
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-20/src/lib.rs}}
 ```
 
 <span class="caption">Listing 15-20: A library to keep track of how close a
@@ -194,36 +152,7 @@ implement a mock object to do just that, but the borrow checker won’t allow it
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore,does_not_compile
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    struct MockMessenger {
-        sent_messages: Vec<String>,
-    }
-
-    impl MockMessenger {
-        fn new() -> MockMessenger {
-            MockMessenger { sent_messages: vec![] }
-        }
-    }
-
-    impl Messenger for MockMessenger {
-        fn send(&self, message: &str) {
-            self.sent_messages.push(String::from(message));
-        }
-    }
-
-    #[test]
-    fn it_sends_an_over_75_percent_warning_message() {
-        let mock_messenger = MockMessenger::new();
-        let mut limit_tracker = LimitTracker::new(&mock_messenger, 100);
-
-        limit_tracker.set_value(80);
-
-        assert_eq!(mock_messenger.sent_messages.len(), 1);
-    }
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-21/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 15-21: An attempt to implement a `MockMessenger`
@@ -250,13 +179,7 @@ of should now have one message in it.
 However, there’s one problem with this test, as shown here:
 
 ```text
-error[E0596]: cannot borrow immutable field `self.sent_messages` as mutable
-  --> src/lib.rs:52:13
-   |
-51 |         fn send(&self, message: &str) {
-   |                 ----- use `&mut self` here to make mutable
-52 |             self.sent_messages.push(String::from(message));
-   |             ^^^^^^^^^^^^^^^^^^ cannot mutably borrow immutable field
+{{#include ../listings/ch15-smart-pointers/listing-15-21/output.txt}}
 ```
 
 We can’t modify the `MockMessenger` to keep track of the messages, because the
@@ -273,73 +196,7 @@ shows what that looks like:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub trait Messenger {
-#     fn send(&self, msg: &str);
-# }
-#
-# pub struct LimitTracker<'a, T: Messenger> {
-#     messenger: &'a T,
-#     value: usize,
-#     max: usize,
-# }
-#
-# impl<'a, T> LimitTracker<'a, T>
-#     where T: Messenger {
-#     pub fn new(messenger: &T, max: usize) -> LimitTracker<T> {
-#         LimitTracker {
-#             messenger,
-#             value: 0,
-#             max,
-#         }
-#     }
-#
-#     pub fn set_value(&mut self, value: usize) {
-#         self.value = value;
-#
-#         let percentage_of_max = self.value as f64 / self.max as f64;
-#
-#         if percentage_of_max >= 1.0 {
-#             self.messenger.send("Error: You are over your quota!");
-#         } else if percentage_of_max >= 0.9 {
-#              self.messenger.send("Urgent warning: You've used up over 90% of your quota!");
-#         } else if percentage_of_max >= 0.75 {
-#             self.messenger.send("Warning: You've used up over 75% of your quota!");
-#         }
-#     }
-# }
-#
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use std::cell::RefCell;
-
-    struct MockMessenger {
-        sent_messages: RefCell<Vec<String>>,
-    }
-
-    impl MockMessenger {
-        fn new() -> MockMessenger {
-            MockMessenger { sent_messages: RefCell::new(vec![]) }
-        }
-    }
-
-    impl Messenger for MockMessenger {
-        fn send(&self, message: &str) {
-            self.sent_messages.borrow_mut().push(String::from(message));
-        }
-    }
-
-    #[test]
-    fn it_sends_an_over_75_percent_warning_message() {
-        // --snip--
-#         let mock_messenger = MockMessenger::new();
-#         let mut limit_tracker = LimitTracker::new(&mock_messenger, 100);
-#         limit_tracker.set_value(75);
-
-        assert_eq!(mock_messenger.sent_messages.borrow().len(), 1);
-    }
-}
-# fn main() {}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-22/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 15-22: Using `RefCell<T>` to mutate an inner
@@ -388,15 +245,7 @@ at runtime.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore,panics
-impl Messenger for MockMessenger {
-    fn send(&self, message: &str) {
-        let mut one_borrow = self.sent_messages.borrow_mut();
-        let mut two_borrow = self.sent_messages.borrow_mut();
-
-        one_borrow.push(String::from(message));
-        two_borrow.push(String::from(message));
-    }
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-23/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 15-23: Creating two mutable references in the
@@ -409,10 +258,7 @@ which isn’t allowed. When we run the tests for our library, the code in Listin
 15-23 will compile without any errors, but the test will fail:
 
 ```text
----- tests::it_sends_an_over_75_percent_warning_message stdout ----
-	thread 'tests::it_sends_an_over_75_percent_warning_message' panicked at
-'already borrowed: BorrowMutError', src/libcore/result.rs:906:4
-note: Run with `RUST_BACKTRACE=1` for a backtrace.
+{{#include ../listings/ch15-smart-pointers/listing-15-23/output.txt}}
 ```
 
 Notice that the code panicked with the message `already borrowed:
@@ -447,30 +293,7 @@ the lists:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-#[derive(Debug)]
-enum List {
-    Cons(Rc<RefCell<i32>>, Rc<List>),
-    Nil,
-}
-
-use crate::List::{Cons, Nil};
-use std::rc::Rc;
-use std::cell::RefCell;
-
-fn main() {
-    let value = Rc::new(RefCell::new(5));
-
-    let a = Rc::new(Cons(Rc::clone(&value), Rc::new(Nil)));
-
-    let b = Cons(Rc::new(RefCell::new(6)), Rc::clone(&a));
-    let c = Cons(Rc::new(RefCell::new(10)), Rc::clone(&a));
-
-    *value.borrow_mut() += 10;
-
-    println!("a after = {:?}", a);
-    println!("b after = {:?}", b);
-    println!("c after = {:?}", c);
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-24/src/main.rs}}
 ```
 
 <span class="caption">Listing 15-24: Using `Rc<RefCell<i32>>` to create a
@@ -498,9 +321,7 @@ When we print `a`, `b`, and `c`, we can see that they all have the modified
 value of 15 rather than 5:
 
 ```text
-a after = Cons(RefCell { value: 15 }, Nil)
-b after = Cons(RefCell { value: 6 }, Cons(RefCell { value: 15 }, Nil))
-c after = Cons(RefCell { value: 10 }, Cons(RefCell { value: 15 }, Nil))
+{{#include ../listings/ch15-smart-pointers/listing-15-24/output.txt}}
 ```
 
 This technique is pretty neat! By using `RefCell<T>`, we have an outwardly
diff --git a/src/ch15-06-reference-cycles.md b/src/ch15-06-reference-cycles.md
index 1a919e3a..8b59ec02 100644
--- a/src/ch15-06-reference-cycles.md
+++ b/src/ch15-06-reference-cycles.md
@@ -17,29 +17,8 @@ starting with the definition of the `List` enum and a `tail` method in Listing
 
 <span class="filename">Filename: src/main.rs</span>
 
-<!-- Hidden fn main is here to disable the automatic wrapping in fn main that
-doc tests do; the `use List` fails if this listing is put within a main -->
-
 ```rust
-# fn main() {}
-use std::rc::Rc;
-use std::cell::RefCell;
-use crate::List::{Cons, Nil};
-
-#[derive(Debug)]
-enum List {
-    Cons(i32, RefCell<Rc<List>>),
-    Nil,
-}
-
-impl List {
-    fn tail(&self) -> Option<&RefCell<Rc<List>>> {
-        match self {
-            Cons(_, item) => Some(item),
-            Nil => None,
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-25/src/main.rs}}
 ```
 
 <span class="caption">Listing 15-25: A cons list definition that holds a
@@ -61,47 +40,7 @@ reference counts are at various points in this process.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use crate::List::{Cons, Nil};
-# use std::rc::Rc;
-# use std::cell::RefCell;
-# #[derive(Debug)]
-# enum List {
-#     Cons(i32, RefCell<Rc<List>>),
-#     Nil,
-# }
-#
-# impl List {
-#     fn tail(&self) -> Option<&RefCell<Rc<List>>> {
-#         match self {
-#             Cons(_, item) => Some(item),
-#             Nil => None,
-#         }
-#     }
-# }
-#
-fn main() {
-    let a = Rc::new(Cons(5, RefCell::new(Rc::new(Nil))));
-
-    println!("a initial rc count = {}", Rc::strong_count(&a));
-    println!("a next item = {:?}", a.tail());
-
-    let b = Rc::new(Cons(10, RefCell::new(Rc::clone(&a))));
-
-    println!("a rc count after b creation = {}", Rc::strong_count(&a));
-    println!("b initial rc count = {}", Rc::strong_count(&b));
-    println!("b next item = {:?}", b.tail());
-
-    if let Some(link) = a.tail() {
-        *link.borrow_mut() = Rc::clone(&b);
-    }
-
-    println!("b rc count after changing a = {}", Rc::strong_count(&b));
-    println!("a rc count after changing a = {}", Rc::strong_count(&a));
-
-    // Uncomment the next line to see that we have a cycle;
-    // it will overflow the stack
-    // println!("a next item = {:?}", a.tail());
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-26/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-26: Creating a reference cycle of two `List`
@@ -122,13 +61,7 @@ When we run this code, keeping the last `println!` commented out for the
 moment, we’ll get this output:
 
 ```text
-a initial rc count = 1
-a next item = Some(RefCell { value: Nil })
-a rc count after b creation = 2
-b initial rc count = 1
-b next item = Some(RefCell { value: Cons(5, RefCell { value: Nil }) })
-b rc count after changing a = 2
-a rc count after changing a = 2
+{{#include ../listings/ch15-smart-pointers/listing-15-26/output.txt}}
 ```
 
 The reference count of the `Rc<List>` instances in both `a` and `b` are 2
@@ -215,14 +148,7 @@ references to its children `Node` values:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::rc::Rc;
-use std::cell::RefCell;
-
-#[derive(Debug)]
-struct Node {
-    value: i32,
-    children: RefCell<Vec<Rc<Node>>>,
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-27/src/main.rs:here}}
 ```
 
 We want a `Node` to own its children, and we want to share that ownership with
@@ -238,26 +164,7 @@ with the value 5 and `leaf` as one of its children, as shown in Listing 15-27:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::rc::Rc;
-# use std::cell::RefCell;
-#
-# #[derive(Debug)]
-# struct Node {
-#     value: i32,
-#    children: RefCell<Vec<Rc<Node>>>,
-# }
-#
-fn main() {
-    let leaf = Rc::new(Node {
-        value: 3,
-        children: RefCell::new(vec![]),
-    });
-
-    let branch = Rc::new(Node {
-        value: 5,
-        children: RefCell::new(vec![Rc::clone(&leaf)]),
-    });
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-27/src/main.rs:there}}
 ```
 
 <span class="caption">Listing 15-27: Creating a `leaf` node with no children
@@ -291,15 +198,7 @@ like this:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::rc::{Rc, Weak};
-use std::cell::RefCell;
-
-#[derive(Debug)]
-struct Node {
-    value: i32,
-    parent: RefCell<Weak<Node>>,
-    children: RefCell<Vec<Rc<Node>>>,
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-28/src/main.rs:here}}
 ```
 
 A node will be able to refer to its parent node but doesn’t own its parent.
@@ -309,35 +208,7 @@ node will have a way to refer to its parent, `branch`:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::rc::{Rc, Weak};
-# use std::cell::RefCell;
-#
-# #[derive(Debug)]
-# struct Node {
-#     value: i32,
-#     parent: RefCell<Weak<Node>>,
-#     children: RefCell<Vec<Rc<Node>>>,
-# }
-#
-fn main() {
-    let leaf = Rc::new(Node {
-        value: 3,
-        parent: RefCell::new(Weak::new()),
-        children: RefCell::new(vec![]),
-    });
-
-    println!("leaf parent = {:?}", leaf.parent.borrow().upgrade());
-
-    let branch = Rc::new(Node {
-        value: 5,
-        parent: RefCell::new(Weak::new()),
-        children: RefCell::new(vec![Rc::clone(&leaf)]),
-    });
-
-    *leaf.parent.borrow_mut() = Rc::downgrade(&branch);
-
-    println!("leaf parent = {:?}", leaf.parent.borrow().upgrade());
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-28/src/main.rs:there}}
 ```
 
 <span class="caption">Listing 15-28: A `leaf` node with a weak reference to its
@@ -390,58 +261,7 @@ in Listing 15-29:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::rc::{Rc, Weak};
-# use std::cell::RefCell;
-#
-# #[derive(Debug)]
-# struct Node {
-#     value: i32,
-#     parent: RefCell<Weak<Node>>,
-#     children: RefCell<Vec<Rc<Node>>>,
-# }
-#
-fn main() {
-    let leaf = Rc::new(Node {
-        value: 3,
-        parent: RefCell::new(Weak::new()),
-        children: RefCell::new(vec![]),
-    });
-
-    println!(
-        "leaf strong = {}, weak = {}",
-        Rc::strong_count(&leaf),
-        Rc::weak_count(&leaf),
-    );
-
-    {
-        let branch = Rc::new(Node {
-            value: 5,
-            parent: RefCell::new(Weak::new()),
-            children: RefCell::new(vec![Rc::clone(&leaf)]),
-        });
-
-        *leaf.parent.borrow_mut() = Rc::downgrade(&branch);
-
-        println!(
-            "branch strong = {}, weak = {}",
-            Rc::strong_count(&branch),
-            Rc::weak_count(&branch),
-        );
-
-        println!(
-            "leaf strong = {}, weak = {}",
-            Rc::strong_count(&leaf),
-            Rc::weak_count(&leaf),
-        );
-    }
-
-    println!("leaf parent = {:?}", leaf.parent.borrow().upgrade());
-    println!(
-        "leaf strong = {}, weak = {}",
-        Rc::strong_count(&leaf),
-        Rc::weak_count(&leaf),
-    );
-}
+{{#rustdoc_include ../listings/ch15-smart-pointers/listing-15-29/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 15-29: Creating `branch` in an inner scope and
diff --git a/src/ch16-01-threads.md b/src/ch16-01-threads.md
index 5f6eb41a..6cec741d 100644
--- a/src/ch16-01-threads.md
+++ b/src/ch16-01-threads.md
@@ -71,22 +71,7 @@ thread and other text from a new thread:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::thread;
-use std::time::Duration;
-
-fn main() {
-    thread::spawn(|| {
-        for i in 1..10 {
-            println!("hi number {} from the spawned thread!", i);
-            thread::sleep(Duration::from_millis(1));
-        }
-    });
-
-    for i in 1..5 {
-        println!("hi number {} from the main thread!", i);
-        thread::sleep(Duration::from_millis(1));
-    }
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-01/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-1: Creating a new thread to print one thing
@@ -97,6 +82,10 @@ thread ends, whether or not it has finished running. The output from this
 program might be a little different every time, but it will look similar to the
 following:
 
+<!-- Not extracting output because changes to this output aren't significant;
+the changes are likely to be due to the threads running differently rather than
+changes in the compiler -->
+
 ```text
 hi number 1 from the main thread!
 hi number 1 from the spawned thread!
@@ -139,24 +128,7 @@ in Listing 16-1 and call `join` to make sure the spawned thread finishes before
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::thread;
-use std::time::Duration;
-
-fn main() {
-    let handle = thread::spawn(|| {
-        for i in 1..10 {
-            println!("hi number {} from the spawned thread!", i);
-            thread::sleep(Duration::from_millis(1));
-        }
-    });
-
-    for i in 1..5 {
-        println!("hi number {} from the main thread!", i);
-        thread::sleep(Duration::from_millis(1));
-    }
-
-    handle.join().unwrap();
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-02/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-2: Saving a `JoinHandle` from `thread::spawn`
@@ -168,6 +140,10 @@ thread is prevented from performing work or exiting. Because we’ve put the cal
 to `join` after the main thread’s `for` loop, running Listing 16-2 should
 produce output similar to this:
 
+<!-- Not extracting output because changes to this output aren't significant;
+the changes are likely to be due to the threads running differently rather than
+changes in the compiler -->
+
 ```text
 hi number 1 from the main thread!
 hi number 2 from the main thread!
@@ -193,29 +169,16 @@ But let’s see what happens when we instead move `handle.join()` before the
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::thread;
-use std::time::Duration;
-
-fn main() {
-    let handle = thread::spawn(|| {
-        for i in 1..10 {
-            println!("hi number {} from the spawned thread!", i);
-            thread::sleep(Duration::from_millis(1));
-        }
-    });
-
-    handle.join().unwrap();
-
-    for i in 1..5 {
-        println!("hi number {} from the main thread!", i);
-        thread::sleep(Duration::from_millis(1));
-    }
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/no-listing-01-join-too-early/src/main.rs}}
 ```
 
 The main thread will wait for the spawned thread to finish and then run its
 `for` loop, so the output won’t be interleaved anymore, as shown here:
 
+<!-- Not extracting output because changes to this output aren't significant;
+the changes are likely to be due to the threads running differently rather than
+changes in the compiler -->
+
 ```text
 hi number 1 from the spawned thread!
 hi number 2 from the spawned thread!
@@ -255,17 +218,7 @@ thread. However, this won’t yet work, as you’ll see in a moment.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-use std::thread;
-
-fn main() {
-    let v = vec![1, 2, 3];
-
-    let handle = thread::spawn(|| {
-        println!("Here's a vector: {:?}", v);
-    });
-
-    handle.join().unwrap();
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-03/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-3: Attempting to use a vector created by the
@@ -277,20 +230,7 @@ should be able to access `v` inside that new thread. But when we compile this
 example, we get the following error:
 
 ```text
-error[E0373]: closure may outlive the current function, but it borrows `v`,
-which is owned by the current function
- --> src/main.rs:6:32
-  |
-6 |     let handle = thread::spawn(|| {
-  |                                ^^ may outlive borrowed value `v`
-7 |         println!("Here's a vector: {:?}", v);
-  |                                           - `v` is borrowed here
-  |
-help: to force the closure to take ownership of `v` (and any other referenced
-variables), use the `move` keyword
-  |
-6 |     let handle = thread::spawn(move || {
-  |                                ^^^^^^^
+{{#include ../listings/ch16-fearless-concurrency/listing-16-03/output.txt}}
 ```
 
 Rust *infers* how to capture `v`, and because `println!` only needs a reference
@@ -304,19 +244,7 @@ that won’t be valid:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-use std::thread;
-
-fn main() {
-    let v = vec![1, 2, 3];
-
-    let handle = thread::spawn(|| {
-        println!("Here's a vector: {:?}", v);
-    });
-
-    drop(v); // oh no!
-
-    handle.join().unwrap();
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-04/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-4: A thread with a closure that attempts to
@@ -332,9 +260,12 @@ is also invalid. Oh no!
 To fix the compiler error in Listing 16-3, we can use the error message’s
 advice:
 
+<!-- manual-regeneration
+after automatic regeneration, look at listings/ch16-fearless-concurrency/listing-16-03/output.txt and copy the relevant part
+-->
+
 ```text
-help: to force the closure to take ownership of `v` (and any other referenced
-variables), use the `move` keyword
+help: to force the closure to take ownership of `v` (and any other referenced variables), use the `move` keyword
   |
 6 |     let handle = thread::spawn(move || {
   |                                ^^^^^^^
@@ -348,17 +279,7 @@ should borrow the values. The modification to Listing 16-3 shown in Listing
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::thread;
-
-fn main() {
-    let v = vec![1, 2, 3];
-
-    let handle = thread::spawn(move || {
-        println!("Here's a vector: {:?}", v);
-    });
-
-    handle.join().unwrap();
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-05/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-5: Using the `move` keyword to force a closure
@@ -372,17 +293,7 @@ would move `v` into the closure’s environment, and we could no longer call
 `drop` on it in the main thread. We would get this compiler error instead:
 
 ```text
-error[E0382]: use of moved value: `v`
-  --> src/main.rs:10:10
-   |
-6  |     let handle = thread::spawn(move || {
-   |                                ------- value moved (into closure) here
-...
-10 |     drop(v); // oh no!
-   |          ^ value used here after move
-   |
-   = note: move occurs because `v` has type `std::vec::Vec<i32>`, which does
-   not implement the `Copy` trait
+{{#include ../listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt}}
 ```
 
 Rust’s ownership rules have saved us again! We got an error from the code in
diff --git a/src/ch16-02-message-passing.md b/src/ch16-02-message-passing.md
index 6b5c23f8..7fdbccc6 100644
--- a/src/ch16-02-message-passing.md
+++ b/src/ch16-02-message-passing.md
@@ -36,11 +36,7 @@ want to send over the channel.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-use std::sync::mpsc;
-
-fn main() {
-    let (tx, rx) = mpsc::channel();
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-06/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-6: Creating a channel and assigning the two
@@ -72,17 +68,7 @@ sending a chat message from one thread to another.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::thread;
-use std::sync::mpsc;
-
-fn main() {
-    let (tx, rx) = mpsc::channel();
-
-    thread::spawn(move || {
-        let val = String::from("hi");
-        tx.send(val).unwrap();
-    });
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-07/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-7: Moving `tx` to a spawned thread and sending
@@ -107,20 +93,7 @@ end of the river or like getting a chat message.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::thread;
-use std::sync::mpsc;
-
-fn main() {
-    let (tx, rx) = mpsc::channel();
-
-    thread::spawn(move || {
-        let val = String::from("hi");
-        tx.send(val).unwrap();
-    });
-
-    let received = rx.recv().unwrap();
-    println!("Got: {}", received);
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-08/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-8: Receiving the value “hi” in the main thread
@@ -148,6 +121,10 @@ thread is appropriate.
 When we run the code in Listing 16-8, we’ll see the value printed from the main
 thread:
 
+<!-- Not extracting output because changes to this output aren't significant;
+the changes are likely to be due to the threads running differently rather than
+changes in the compiler -->
+
 ```text
 Got: hi
 ```
@@ -167,21 +144,7 @@ this code isn’t allowed:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-use std::thread;
-use std::sync::mpsc;
-
-fn main() {
-    let (tx, rx) = mpsc::channel();
-
-    thread::spawn(move || {
-        let val = String::from("hi");
-        tx.send(val).unwrap();
-        println!("val is {}", val);
-    });
-
-    let received = rx.recv().unwrap();
-    println!("Got: {}", received);
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-09/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-9: Attempting to use `val` after we’ve sent it
@@ -195,16 +158,7 @@ unexpected results due to inconsistent or nonexistent data. However, Rust gives
 us an error if we try to compile the code in Listing 16-9:
 
 ```text
-error[E0382]: use of moved value: `val`
-  --> src/main.rs:10:31
-   |
-9  |         tx.send(val).unwrap();
-   |                 --- value moved here
-10 |         println!("val is {}", val);
-   |                               ^^^ value used here after move
-   |
-   = note: move occurs because `val` has type `std::string::String`, which does
-not implement the `Copy` trait
+{{#include ../listings/ch16-fearless-concurrency/listing-16-09/output.txt}}
 ```
 
 Our concurrency mistake has caused a compile time error. The `send` function
@@ -223,31 +177,7 @@ pause for a second between each message.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::thread;
-use std::sync::mpsc;
-use std::time::Duration;
-
-fn main() {
-    let (tx, rx) = mpsc::channel();
-
-    thread::spawn(move || {
-        let vals = vec![
-            String::from("hi"),
-            String::from("from"),
-            String::from("the"),
-            String::from("thread"),
-        ];
-
-        for val in vals {
-            tx.send(val).unwrap();
-            thread::sleep(Duration::from_secs(1));
-        }
-    });
-
-    for received in rx {
-        println!("Got: {}", received);
-    }
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-10/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-10: Sending multiple messages and pausing
@@ -265,6 +195,10 @@ printing it. When the channel is closed, iteration will end.
 When running the code in Listing 16-10, you should see the following output
 with a 1-second pause in between each line:
 
+<!-- Not extracting output because changes to this output aren't significant;
+the changes are likely to be due to the threads running differently rather than
+changes in the compiler -->
+
 ```text
 Got: hi
 Got: from
@@ -286,50 +220,7 @@ so by cloning the transmitting half of the channel, as shown in Listing 16-11:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# use std::thread;
-# use std::sync::mpsc;
-# use std::time::Duration;
-#
-# fn main() {
-// --snip--
-
-let (tx, rx) = mpsc::channel();
-
-let tx1 = mpsc::Sender::clone(&tx);
-thread::spawn(move || {
-    let vals = vec![
-        String::from("hi"),
-        String::from("from"),
-        String::from("the"),
-        String::from("thread"),
-    ];
-
-    for val in vals {
-        tx1.send(val).unwrap();
-        thread::sleep(Duration::from_secs(1));
-    }
-});
-
-thread::spawn(move || {
-    let vals = vec![
-        String::from("more"),
-        String::from("messages"),
-        String::from("for"),
-        String::from("you"),
-    ];
-
-    for val in vals {
-        tx.send(val).unwrap();
-        thread::sleep(Duration::from_secs(1));
-    }
-});
-
-for received in rx {
-    println!("Got: {}", received);
-}
-
-// --snip--
-# }
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-11/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 16-11: Sending multiple messages from multiple
@@ -343,6 +234,10 @@ messages to the receiving end of the channel.
 
 When you run the code, your output should look something like this:
 
+<!-- Not extracting output because changes to this output aren't significant;
+the changes are likely to be due to the threads running differently rather than
+changes in the compiler -->
+
 ```text
 Got: hi
 Got: more
diff --git a/src/ch16-03-shared-state.md b/src/ch16-03-shared-state.md
index c39d302b..50ce56cc 100644
--- a/src/ch16-03-shared-state.md
+++ b/src/ch16-03-shared-state.md
@@ -54,18 +54,7 @@ single-threaded context, as shown in Listing 16-12:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::sync::Mutex;
-
-fn main() {
-    let m = Mutex::new(5);
-
-    {
-        let mut num = m.lock().unwrap();
-        *num = 6;
-    }
-
-    println!("m = {:?}", m);
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-12/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-12: Exploring the API of `Mutex<T>` in a
@@ -110,28 +99,7 @@ a compiler error, and we’ll use that error to learn more about using
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-use std::sync::Mutex;
-use std::thread;
-
-fn main() {
-    let counter = Mutex::new(0);
-    let mut handles = vec![];
-
-    for _ in 0..10 {
-        let handle = thread::spawn(move || {
-            let mut num = counter.lock().unwrap();
-
-            *num += 1;
-        });
-        handles.push(handle);
-    }
-
-    for handle in handles {
-        handle.join().unwrap();
-    }
-
-    println!("Result: {}", *counter.lock().unwrap());
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-13/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-13: Ten threads each increment a counter
@@ -153,17 +121,7 @@ program.
 We hinted that this example wouldn’t compile. Now let’s find out why!
 
 ```text
-error[E0382]: use of moved value: `counter`
-  --> src/main.rs:9:36
-   |
-9  |         let handle = thread::spawn(move || {
-   |                                    ^^^^^^^ value moved into closure here,
-in previous iteration of loop
-10 |             let mut num = counter.lock().unwrap();
-   |                           ------- use occurs due to use in closure
-   |
-   = note: move occurs because `counter` has type `std::sync::Mutex<i32>`,
-which does not implement the `Copy` trait
+{{#include ../listings/ch16-fearless-concurrency/listing-16-13/output.txt}}
 ```
 
 The error message states that the `counter` value was moved in the previous
@@ -183,30 +141,7 @@ errors, we’ll also switch back to using the `for` loop, and we’ll keep the
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-use std::rc::Rc;
-use std::sync::Mutex;
-use std::thread;
-
-fn main() {
-    let counter = Rc::new(Mutex::new(0));
-    let mut handles = vec![];
-
-    for _ in 0..10 {
-        let counter = Rc::clone(&counter);
-        let handle = thread::spawn(move || {
-            let mut num = counter.lock().unwrap();
-
-            *num += 1;
-        });
-        handles.push(handle);
-    }
-
-    for handle in handles {
-        handle.join().unwrap();
-    }
-
-    println!("Result: {}", *counter.lock().unwrap());
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-14/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-14: Attempting to use `Rc<T>` to allow
@@ -216,19 +151,7 @@ Once again, we compile and get... different errors! The compiler is teaching us
 a lot.
 
 ```text
-error[E0277]: `std::rc::Rc<std::sync::Mutex<i32>>` cannot be sent between threads safely
-  --> src/main.rs:11:22
-   |
-11 |         let handle = thread::spawn(move || {
-   |                      ^^^^^^^^^^^^^ `std::rc::Rc<std::sync::Mutex<i32>>`
-cannot be sent between threads safely
-   |
-   = help: within `[closure@src/main.rs:11:36: 14:10
-counter:std::rc::Rc<std::sync::Mutex<i32>>]`, the trait `std::marker::Send`
-is not implemented for `std::rc::Rc<std::sync::Mutex<i32>>`
-   = note: required because it appears within the type
-`[closure@src/main.rs:11:36: 14:10 counter:std::rc::Rc<std::sync::Mutex<i32>>]`
-   = note: required by `std::thread::spawn`
+{{#include ../listings/ch16-fearless-concurrency/listing-16-14/output.txt}}
 ```
 
 Wow, that error message is very wordy! Here’s the important part to focus
@@ -271,29 +194,7 @@ our program by changing the `use` line, the call to `new`, and the call to
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::sync::{Mutex, Arc};
-use std::thread;
-
-fn main() {
-    let counter = Arc::new(Mutex::new(0));
-    let mut handles = vec![];
-
-    for _ in 0..10 {
-        let counter = Arc::clone(&counter);
-        let handle = thread::spawn(move || {
-            let mut num = counter.lock().unwrap();
-
-            *num += 1;
-        });
-        handles.push(handle);
-    }
-
-    for handle in handles {
-        handle.join().unwrap();
-    }
-
-    println!("Result: {}", *counter.lock().unwrap());
-}
+{{#rustdoc_include ../listings/ch16-fearless-concurrency/listing-16-15/src/main.rs}}
 ```
 
 <span class="caption">Listing 16-15: Using an `Arc<T>` to wrap the `Mutex<T>`
@@ -301,6 +202,10 @@ to be able to share ownership across multiple threads</span>
 
 This code will print the following:
 
+<!-- Not extracting output because changes to this output aren't significant;
+the changes are likely to be due to the threads running differently rather than
+changes in the compiler -->
+
 ```text
 Result: 10
 ```
diff --git a/src/ch17-01-what-is-oo.md b/src/ch17-01-what-is-oo.md
index 15eae18e..e197cbfa 100644
--- a/src/ch17-01-what-is-oo.md
+++ b/src/ch17-01-what-is-oo.md
@@ -47,10 +47,7 @@ cache the calculated average for us. Listing 17-1 has the definition of the
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub struct AveragedCollection {
-    list: Vec<i32>,
-    average: f64,
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-01/src/lib.rs}}
 ```
 
 <span class="caption">Listing 17-1: An `AveragedCollection` struct that
@@ -66,36 +63,7 @@ on the struct, as shown in Listing 17-2:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub struct AveragedCollection {
-#     list: Vec<i32>,
-#     average: f64,
-# }
-impl AveragedCollection {
-    pub fn add(&mut self, value: i32) {
-        self.list.push(value);
-        self.update_average();
-    }
-
-    pub fn remove(&mut self) -> Option<i32> {
-        let result = self.list.pop();
-        match result {
-            Some(value) => {
-                self.update_average();
-                Some(value)
-            },
-            None => None,
-        }
-    }
-
-    pub fn average(&self) -> f64 {
-        self.average
-    }
-
-    fn update_average(&mut self) {
-        let total: i32 = self.list.iter().sum();
-        self.average = total as f64 / self.list.len() as f64;
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-02/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-2: Implementations of the public methods
diff --git a/src/ch17-02-trait-objects.md b/src/ch17-02-trait-objects.md
index d7369bff..b4f7e428 100644
--- a/src/ch17-02-trait-objects.md
+++ b/src/ch17-02-trait-objects.md
@@ -69,9 +69,7 @@ Listing 17-3 shows how to define a trait named `Draw` with one method named
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub trait Draw {
-    fn draw(&self);
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-03/src/lib.rs}}
 ```
 
 <span class="caption">Listing 17-3: Definition of the `Draw` trait</span>
@@ -85,13 +83,7 @@ a `Box` that implements the `Draw` trait.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub trait Draw {
-#     fn draw(&self);
-# }
-#
-pub struct Screen {
-    pub components: Vec<Box<dyn Draw>>,
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-04/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-4: Definition of the `Screen` struct with a
@@ -104,21 +96,7 @@ On the `Screen` struct, we’ll define a method named `run` that will call the
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub trait Draw {
-#     fn draw(&self);
-# }
-#
-# pub struct Screen {
-#     pub components: Vec<Box<dyn Draw>>,
-# }
-#
-impl Screen {
-    pub fn run(&self) {
-        for component in self.components.iter() {
-            component.draw();
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-05/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-5: A `run` method on `Screen` that calls the
@@ -134,22 +112,7 @@ as in Listing 17-6:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub trait Draw {
-#     fn draw(&self);
-# }
-#
-pub struct Screen<T: Draw> {
-    pub components: Vec<T>,
-}
-
-impl<T> Screen<T>
-    where T: Draw {
-    pub fn run(&self) {
-        for component in self.components.iter() {
-            component.draw();
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-06/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-6: An alternate implementation of the `Screen`
@@ -176,21 +139,7 @@ might have fields for `width`, `height`, and `label`, as shown in Listing 17-7:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub trait Draw {
-#     fn draw(&self);
-# }
-#
-pub struct Button {
-    pub width: u32,
-    pub height: u32,
-    pub label: String,
-}
-
-impl Draw for Button {
-    fn draw(&self) {
-        // code to actually draw a button
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-07/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-7: A `Button` struct that implements the
@@ -213,19 +162,7 @@ If someone using our library decides to implement a `SelectBox` struct that has
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use gui::Draw;
-
-struct SelectBox {
-    width: u32,
-    height: u32,
-    options: Vec<String>,
-}
-
-impl Draw for SelectBox {
-    fn draw(&self) {
-        // code to actually draw a select box
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-08/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 17-8: Another crate using `gui` and implementing
@@ -240,30 +177,7 @@ components. Listing 17-9 shows this implementation:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use gui::{Screen, Button};
-
-fn main() {
-    let screen = Screen {
-        components: vec![
-            Box::new(SelectBox {
-                width: 75,
-                height: 10,
-                options: vec![
-                    String::from("Yes"),
-                    String::from("Maybe"),
-                    String::from("No")
-                ],
-            }),
-            Box::new(Button {
-                width: 50,
-                height: 10,
-                label: String::from("OK"),
-            }),
-        ],
-    };
-
-    screen.run();
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-09/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 17-9: Using trait objects to store values of
@@ -297,17 +211,7 @@ with a `String` as a component:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-use gui::Screen;
-
-fn main() {
-    let screen = Screen {
-        components: vec![
-            Box::new(String::from("Hi")),
-        ],
-    };
-
-    screen.run();
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-10/src/main.rs}}
 ```
 
 <span class="caption">Listing 17-10: Attempting to use a type that doesn’t
@@ -316,14 +220,7 @@ implement the trait object’s trait</span>
 We’ll get this error because `String` doesn’t implement the `Draw` trait:
 
 ```text
-error[E0277]: the trait bound `std::string::String: gui::Draw` is not satisfied
-  --> src/main.rs:7:13
-   |
- 7 |             Box::new(String::from("Hi")),
-   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait gui::Draw is not
-   implemented for `std::string::String`
-   |
-   = note: required for the cast to the object type `gui::Draw`
+{{#include ../listings/ch17-oop/listing-17-10/output.txt}}
 ```
 
 This error lets us know that either we’re passing something to `Screen` we
@@ -398,22 +295,13 @@ tried to implement the `Screen` struct in Listing 17-4 to hold types that
 implement the `Clone` trait instead of the `Draw` trait, like this:
 
 ```rust,ignore,does_not_compile
-pub struct Screen {
-    pub components: Vec<Box<dyn Clone>>,
-}
+{{#rustdoc_include ../listings/ch17-oop/no-listing-01-trait-object-of-clone/src/lib.rs}}
 ```
 
 We would get this error:
 
 ```text
-error[E0038]: the trait `std::clone::Clone` cannot be made into an object
- --> src/lib.rs:2:5
-  |
-2 |     pub components: Vec<Box<dyn Clone>>,
-  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `std::clone::Clone`
-  cannot be made into an object
-  |
-  = note: the trait cannot require that `Self : Sized`
+{{#include ../listings/ch17-oop/no-listing-01-trait-object-of-clone/output.txt}}
 ```
 
 This error means you can’t use this trait as a trait object in this way. If
diff --git a/src/ch17-03-oo-design-patterns.md b/src/ch17-03-oo-design-patterns.md
index 4ffb3a01..b395da9c 100644
--- a/src/ch17-03-oo-design-patterns.md
+++ b/src/ch17-03-oo-design-patterns.md
@@ -35,20 +35,7 @@ because we haven’t implemented the `blog` crate yet.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use blog::Post;
-
-fn main() {
-    let mut post = Post::new();
-
-    post.add_text("I ate a salad for lunch today");
-    assert_eq!("", post.content());
-
-    post.request_review();
-    assert_eq!("", post.content());
-
-    post.approve();
-    assert_eq!("I ate a salad for lunch today", post.content());
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-11/src/main.rs:all}}
 ```
 
 <span class="caption">Listing 17-11: Code that demonstrates the desired
@@ -89,25 +76,7 @@ inside an `Option<T>` in a private field named `state`. You’ll see why the
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub struct Post {
-    state: Option<Box<dyn State>>,
-    content: String,
-}
-
-impl Post {
-    pub fn new() -> Post {
-        Post {
-            state: Some(Box::new(Draft {})),
-            content: String::new(),
-        }
-    }
-}
-
-trait State {}
-
-struct Draft {}
-
-impl State for Draft {}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-12/src/lib.rs}}
 ```
 
 <span class="caption">Listing 17-12: Definition of a `Post` struct and a `new`
@@ -139,16 +108,7 @@ Post` block:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub struct Post {
-#     content: String,
-# }
-#
-impl Post {
-    // --snip--
-    pub fn add_text(&mut self, text: &str) {
-        self.content.push_str(text);
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-13/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-13: Implementing the `add_text` method to add
@@ -176,16 +136,7 @@ be empty. Listing 17-14 shows this placeholder implementation:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub struct Post {
-#     content: String,
-# }
-#
-impl Post {
-    // --snip--
-    pub fn content(&self) -> &str {
-        ""
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-14/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-14: Adding a placeholder implementation for
@@ -202,39 +153,7 @@ change its state from `Draft` to `PendingReview`. Listing 17-15 shows this code:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub struct Post {
-#     state: Option<Box<dyn State>>,
-#     content: String,
-# }
-#
-impl Post {
-    // --snip--
-    pub fn request_review(&mut self) {
-        if let Some(s) = self.state.take() {
-            self.state = Some(s.request_review())
-        }
-    }
-}
-
-trait State {
-    fn request_review(self: Box<Self>) -> Box<dyn State>;
-}
-
-struct Draft {}
-
-impl State for Draft {
-    fn request_review(self: Box<Self>) -> Box<dyn State> {
-        Box::new(PendingReview {})
-    }
-}
-
-struct PendingReview {}
-
-impl State for PendingReview {
-    fn request_review(self: Box<Self>) -> Box<dyn State> {
-        self
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-15/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-15: Implementing `request_review` methods on
@@ -291,62 +210,7 @@ state is approved, as shown in Listing 17-16:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub struct Post {
-#     state: Option<Box<dyn State>>,
-#     content: String,
-# }
-#
-impl Post {
-    // --snip--
-    pub fn approve(&mut self) {
-        if let Some(s) = self.state.take() {
-            self.state = Some(s.approve())
-        }
-    }
-}
-
-trait State {
-    fn request_review(self: Box<Self>) -> Box<dyn State>;
-    fn approve(self: Box<Self>) -> Box<dyn State>;
-}
-
-struct Draft {}
-
-impl State for Draft {
-#     fn request_review(self: Box<Self>) -> Box<dyn State> {
-#         Box::new(PendingReview {})
-#     }
-#
-    // --snip--
-    fn approve(self: Box<Self>) -> Box<dyn State> {
-        self
-    }
-}
-
-struct PendingReview {}
-
-impl State for PendingReview {
-#     fn request_review(self: Box<Self>) -> Box<dyn State> {
-#         self
-#     }
-#
-    // --snip--
-    fn approve(self: Box<Self>) -> Box<dyn State> {
-        Box::new(Published {})
-    }
-}
-
-struct Published {}
-
-impl State for Published {
-    fn request_review(self: Box<Self>) -> Box<dyn State> {
-        self
-    }
-
-    fn approve(self: Box<Self>) -> Box<dyn State> {
-        self
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-16/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-16: Implementing the `approve` method on
@@ -368,22 +232,8 @@ otherwise, we want to return an empty string slice, as shown in Listing 17-17:
 
 <span class="filename">Filename: src/lib.rs</span>
 
-```rust
-# trait State {
-#     fn content<'a>(&self, post: &'a Post) -> &'a str;
-# }
-# pub struct Post {
-#     state: Option<Box<dyn State>>,
-#     content: String,
-# }
-#
-impl Post {
-    // --snip--
-    pub fn content(&self) -> &str {
-        self.state.as_ref().unwrap().content(self)
-    }
-    // --snip--
-}
+```rust,ignore,does_not_compile
+{{#rustdoc_include ../listings/ch17-oop/listing-17-17/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-17: Updating the `content` method on `Post` to
@@ -418,25 +268,7 @@ Listing 17-18:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub struct Post {
-#     content: String
-# }
-trait State {
-    // --snip--
-    fn content<'a>(&self, post: &'a Post) -> &'a str {
-        ""
-    }
-}
-
-// --snip--
-struct Published {}
-
-impl State for Published {
-    // --snip--
-    fn content<'a>(&self, post: &'a Post) -> &'a str {
-        &post.content
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-18/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-18: Adding the `content` method to the `State`
@@ -528,14 +360,7 @@ Let’s consider the first part of `main` in Listing 17-11:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-# use blog::Post;
-
-fn main() {
-    let mut post = Post::new();
-
-    post.add_text("I ate a salad for lunch today");
-    assert_eq!("", post.content());
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-11/src/main.rs:here}}
 ```
 
 We still enable the creation of new posts in the draft state using `Post::new`
@@ -551,31 +376,7 @@ as well as methods on each:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub struct Post {
-    content: String,
-}
-
-pub struct DraftPost {
-    content: String,
-}
-
-impl Post {
-    pub fn new() -> DraftPost {
-        DraftPost {
-            content: String::new(),
-        }
-    }
-
-    pub fn content(&self) -> &str {
-        &self.content
-    }
-}
-
-impl DraftPost {
-    pub fn add_text(&mut self, text: &str) {
-        self.content.push_str(text);
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-19/src/lib.rs}}
 ```
 
 <span class="caption">Listing 17-19: A `Post` with a `content` method and a
@@ -611,35 +412,7 @@ shown in Listing 17-20:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub struct Post {
-#     content: String,
-# }
-#
-# pub struct DraftPost {
-#     content: String,
-# }
-#
-impl DraftPost {
-    // --snip--
-
-    pub fn request_review(self) -> PendingReviewPost {
-        PendingReviewPost {
-            content: self.content,
-        }
-    }
-}
-
-pub struct PendingReviewPost {
-    content: String,
-}
-
-impl PendingReviewPost {
-    pub fn approve(self) -> Post {
-        Post {
-            content: self.content,
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-20/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 17-20: A `PendingReviewPost` that gets created by
@@ -669,19 +442,7 @@ The updated code in `main` is shown in Listing 17-21:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore
-use blog::Post;
-
-fn main() {
-    let mut post = Post::new();
-
-    post.add_text("I ate a salad for lunch today");
-
-    let post = post.request_review();
-
-    let post = post.approve();
-
-    assert_eq!("I ate a salad for lunch today", post.content());
-}
+{{#rustdoc_include ../listings/ch17-oop/listing-17-21/src/main.rs}}
 ```
 
 <span class="caption">Listing 17-21: Modifications to `main` to use the new
diff --git a/src/ch18-01-all-the-places-for-patterns.md b/src/ch18-01-all-the-places-for-patterns.md
index d838532f..ec0389a8 100644
--- a/src/ch18-01-all-the-places-for-patterns.md
+++ b/src/ch18-01-all-the-places-for-patterns.md
@@ -53,25 +53,7 @@ input.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let favorite_color: Option<&str> = None;
-    let is_tuesday = false;
-    let age: Result<u8, _> = "34".parse();
-
-    if let Some(color) = favorite_color {
-        println!("Using your favorite color, {}, as the background", color);
-    } else if is_tuesday {
-        println!("Tuesday is green day!");
-    } else if let Ok(age) = age {
-        if age > 30 {
-            println!("Using purple as the background color");
-        } else {
-            println!("Using orange as the background color");
-        }
-    } else {
-        println!("Using blue as the background color");
-    }
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-01/src/main.rs}}
 ```
 
 <span class="caption">Listing 18-1: Mixing `if let`, `else if`, `else if let`,
@@ -108,15 +90,7 @@ Listing 18-2 shows a `while let` loop that uses a vector as a stack and prints
 the values in the vector in the opposite order in which they were pushed.
 
 ```rust
-let mut stack = Vec::new();
-
-stack.push(1);
-stack.push(2);
-stack.push(3);
-
-while let Some(top) = stack.pop() {
-    println!("{}", top);
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-02/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-2: Using a `while let` loop to print values
@@ -139,11 +113,7 @@ Listing 18-3 demonstrates how to use a pattern in a `for` loop to destructure,
 or break apart, a tuple as part of the `for` loop.
 
 ```rust
-let v = vec!['a', 'b', 'c'];
-
-for (index, value) in v.iter().enumerate() {
-    println!("{} is at index {}", value, index);
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-03/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-3: Using a pattern in a `for` loop to
@@ -152,9 +122,7 @@ destructure a tuple</span>
 The code in Listing 18-3 will print the following:
 
 ```text
-a is at index 0
-b is at index 1
-c is at index 2
+{{#include ../listings/ch18-patterns-and-matching/listing-18-03/output.txt}}
 ```
 
 We use the `enumerate` method to adapt an iterator to produce a value and that
@@ -193,7 +161,7 @@ To see the pattern matching aspect of `let` more clearly, consider Listing
 18-4, which uses a pattern with `let` to destructure a tuple.
 
 ```rust
-let (x, y, z) = (1, 2, 3);
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-04/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-4: Using a pattern to destructure a tuple and
@@ -210,7 +178,7 @@ example, Listing 18-5 shows an attempt to destructure a tuple with three
 elements into two variables, which won’t work.
 
 ```rust,ignore,does_not_compile
-let (x, y) = (1, 2, 3);
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-05/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-5: Incorrectly constructing a pattern whose
@@ -219,14 +187,7 @@ variables don’t match the number of elements in the tuple</span>
 Attempting to compile this code results in this type error:
 
 ```text
-error[E0308]: mismatched types
- --> src/main.rs:2:9
-  |
-2 |     let (x, y) = (1, 2, 3);
-  |         ^^^^^^ expected a tuple with 3 elements, found one with 2 elements
-  |
-  = note: expected type `({integer}, {integer}, {integer})`
-             found type `(_, _)`
+{{#include ../listings/ch18-patterns-and-matching/listing-18-05/output.txt}}
 ```
 
 If we wanted to ignore one or more of the values in the tuple, we could use `_`
@@ -243,9 +204,7 @@ declares a function named `foo` that takes one parameter named `x` of type
 `i32`, should by now look familiar.
 
 ```rust
-fn foo(x: i32) {
-    // code goes here
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-06/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-6: A function signature uses patterns in the
@@ -258,14 +217,7 @@ as we pass it to a function.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn print_coordinates(&(x, y): &(i32, i32)) {
-    println!("Current location: ({}, {})", x, y);
-}
-
-fn main() {
-    let point = (3, 5);
-    print_coordinates(&point);
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-07/src/main.rs}}
 ```
 
 <span class="caption">Listing 18-7: A function with parameters that destructure
diff --git a/src/ch18-02-refutability.md b/src/ch18-02-refutability.md
index 36fa17d4..029547f4 100644
--- a/src/ch18-02-refutability.md
+++ b/src/ch18-02-refutability.md
@@ -28,7 +28,7 @@ where Rust requires an irrefutable pattern and vice versa. Listing 18-8 shows a
 pattern. As you might expect, this code will not compile.
 
 ```rust,ignore,does_not_compile
-let Some(x) = some_option_value;
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-08/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-8: Attempting to use a refutable pattern with
@@ -41,11 +41,7 @@ do with a `None` value. At compile time, Rust will complain that we’ve tried t
 use a refutable pattern where an irrefutable pattern is required:
 
 ```text
-error[E0005]: refutable pattern in local binding: `None` not covered
- -->
-  |
-3 | let Some(x) = some_option_value;
-  |     ^^^^^^^ pattern `None` not covered
+{{#include ../listings/ch18-patterns-and-matching/listing-18-08/output.txt}}
 ```
 
 Because we didn’t cover (and couldn’t cover!) every valid value with the
@@ -58,10 +54,7 @@ will just skip the code in the curly brackets, giving it a way to continue
 validly. Listing 18-9 shows how to fix the code in Listing 18-8.
 
 ```rust
-# let some_option_value: Option<i32> = None;
-if let Some(x) = some_option_value {
-    println!("{}", x);
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-09/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-9: Using `if let` and a block with refutable
@@ -72,10 +65,8 @@ cannot use an irrefutable pattern without receiving an error. If we give `if
 let` a pattern that will always match, such as `x`, as shown in Listing 18-10,
 the compiler will give a warning.
 
-```rust,ignore
-if let x = 5 {
-    println!("{}", x);
-};
+```rust
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-10/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-10: Attempting to use an irrefutable pattern
@@ -85,15 +76,7 @@ Rust complains that it doesn’t make sense to use `if let` with an irrefutable
 pattern:
 
 ```text
-warning: irrefutable if-let pattern
- --> <anon>:2:5
-  |
-2 | /     if let x = 5 {
-3 | |     println!("{}", x);
-4 | | };
-  | |_^
-  |
-  = note: #[warn(irrefutable_let_patterns)] on by default
+{{#include ../listings/ch18-patterns-and-matching/listing-18-10/output.txt}}
 ```
 
 For this reason, match arms must use refutable patterns, except for the last
diff --git a/src/ch18-03-pattern-syntax.md b/src/ch18-03-pattern-syntax.md
index ccbcbd9a..d0b28184 100644
--- a/src/ch18-03-pattern-syntax.md
+++ b/src/ch18-03-pattern-syntax.md
@@ -10,14 +10,7 @@ As you saw in Chapter 6, you can match patterns against literals directly. The
 following code gives some examples:
 
 ```rust
-let x = 1;
-
-match x {
-    1 => println!("one"),
-    2 => println!("two"),
-    3 => println!("three"),
-    _ => println!("anything"),
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/no-listing-01-literals/src/main.rs:here}}
 ```
 
 This code prints `one` because the value in `x` is 1. This syntax is useful
@@ -40,18 +33,7 @@ running this code or reading further.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let x = Some(5);
-    let y = 10;
-
-    match x {
-        Some(50) => println!("Got 50"),
-        Some(y) => println!("Matched, y = {:?}", y),
-        _ => println!("Default case, x = {:?}", x),
-    }
-
-    println!("at the end: x = {:?}, y = {:?}", x, y);
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-11/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-11: A `match` expression with an arm that
@@ -94,13 +76,7 @@ value of `x` matches either of the values in that arm, that arm’s code will
 run:
 
 ```rust
-let x = 1;
-
-match x {
-    1 | 2 => println!("one or two"),
-    3 => println!("three"),
-    _ => println!("anything"),
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/src/main.rs:here}}
 ```
 
 This code prints `one or two`.
@@ -112,12 +88,7 @@ following code, when a pattern matches any of the values within the range, that
 arm will execute:
 
 ```rust
-let x = 5;
-
-match x {
-    1..=5 => println!("one through five"),
-    _ => println!("something else"),
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/no-listing-03-ranges/src/main.rs:here}}
 ```
 
 If `x` is 1, 2, 3, 4, or 5, the first arm will match. This syntax is more
@@ -133,13 +104,7 @@ which Rust can tell if a range is empty or not are `char` and numeric values.
 Here is an example using ranges of `char` values:
 
 ```rust
-let x = 'c';
-
-match x {
-    'a'..='j' => println!("early ASCII letter"),
-    'k'..='z' => println!("late ASCII letter"),
-    _ => println!("something else"),
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/src/main.rs:here}}
 ```
 
 Rust can tell that `c` is within the first pattern’s range and prints `early
@@ -158,18 +123,7 @@ break apart using a pattern with a `let` statement.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-struct Point {
-    x: i32,
-    y: i32,
-}
-
-fn main() {
-    let p = Point { x: 0, y: 7 };
-
-    let Point { x: a, y: b } = p;
-    assert_eq!(0, a);
-    assert_eq!(7, b);
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-12/src/main.rs}}
 ```
 
 <span class="caption">Listing 18-12: Destructuring a struct’s fields into
@@ -192,18 +146,7 @@ in Listing 18-12, but the variables created in the `let` pattern are `x` and
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-struct Point {
-    x: i32,
-    y: i32,
-}
-
-fn main() {
-    let p = Point { x: 0, y: 7 };
-
-    let Point { x, y } = p;
-    assert_eq!(0, x);
-    assert_eq!(7, y);
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-13/src/main.rs}}
 ```
 
 <span class="caption">Listing 18-13: Destructuring struct fields using struct
@@ -225,20 +168,7 @@ three cases: points that lie directly on the `x` axis (which is true when `y =
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# struct Point {
-#     x: i32,
-#     y: i32,
-# }
-#
-fn main() {
-    let p = Point { x: 0, y: 7 };
-
-    match p {
-        Point { x, y: 0 } => println!("On the x axis at {}", x),
-        Point { x: 0, y } => println!("On the y axis at {}", y),
-        Point { x, y } => println!("On neither axis: ({}, {})", x, y),
-    }
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-14/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-14: Destructuring and matching literal values
@@ -268,38 +198,7 @@ a `match` with patterns that will destructure each inner value.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-enum Message {
-    Quit,
-    Move { x: i32, y: i32 },
-    Write(String),
-    ChangeColor(i32, i32, i32),
-}
-
-fn main() {
-    let msg = Message::ChangeColor(0, 160, 255);
-
-    match msg {
-        Message::Quit => {
-            println!("The Quit variant has no data to destructure.")
-        }
-        Message::Move { x, y } => {
-            println!(
-                "Move in the x direction {} and in the y direction {}",
-                x,
-                y
-            );
-        }
-        Message::Write(text) => println!("Text message: {}", text),
-        Message::ChangeColor(r, g, b) => {
-            println!(
-                "Change the color to red {}, green {}, and blue {}",
-                r,
-                g,
-                b
-            )
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-15/src/main.rs}}
 ```
 
 <span class="caption">Listing 18-15: Destructuring enum variants that hold
@@ -333,41 +232,7 @@ For example, we can refactor the code in Listing 18-15 to support RGB and HSV
 colors in the `ChangeColor` message, as shown in Listing 18-16.
 
 ```rust
-enum Color {
-   Rgb(i32, i32, i32),
-   Hsv(i32, i32, i32),
-}
-
-enum Message {
-    Quit,
-    Move { x: i32, y: i32 },
-    Write(String),
-    ChangeColor(Color),
-}
-
-fn main() {
-    let msg = Message::ChangeColor(Color::Hsv(0, 160, 255));
-
-    match msg {
-        Message::ChangeColor(Color::Rgb(r, g, b)) => {
-            println!(
-                "Change the color to red {}, green {}, and blue {}",
-                r,
-                g,
-                b
-            )
-        }
-        Message::ChangeColor(Color::Hsv(h, s, v)) => {
-            println!(
-                "Change the color to hue {}, saturation {}, and value {}",
-                h,
-                s,
-                v
-            )
-        }
-        _ => ()
-    }
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-16/src/main.rs}}
 ```
 
 <span class="caption">Listing 18-16: Matching on nested enums</span>
@@ -386,12 +251,7 @@ The following example shows a complicated destructure where we nest structs and
 tuples inside a tuple and destructure all the primitive values out:
 
 ```rust
-# struct Point {
-#     x: i32,
-#     y: i32,
-# }
-#
-let ((feet, inches), Point {x, y}) = ((3, 10), Point { x: 3, y: -10 });
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/src/main.rs:here}}
 ```
 
 This code lets us break complex types into their component parts so we can use
@@ -420,13 +280,7 @@ including function parameters, as shown in Listing 18-17.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn foo(_: i32, y: i32) {
-    println!("This code only uses the y parameter: {}", y);
-}
-
-fn main() {
-    foo(3, 4);
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-17/src/main.rs}}
 ```
 
 <span class="caption">Listing 18-17: Using `_` in a function signature</span>
@@ -452,19 +306,7 @@ the user should not be allowed to overwrite an existing customization of a
 setting but can unset the setting and give it a value if it is currently unset.
 
 ```rust
-let mut setting_value = Some(5);
-let new_setting_value = Some(10);
-
-match (setting_value, new_setting_value) {
-    (Some(_), Some(_)) => {
-        println!("Can't overwrite an existing customized value");
-    }
-    _ => {
-        setting_value = new_setting_value;
-    }
-}
-
-println!("setting is {:?}", setting_value);
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-18/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-18: Using an underscore within patterns that
@@ -487,13 +329,7 @@ particular values. Listing 18-19 shows an example of ignoring the second and
 fourth values in a tuple of five items.
 
 ```rust
-let numbers = (2, 4, 8, 16, 32);
-
-match numbers {
-    (first, _, third, _, fifth) => {
-        println!("Some numbers: {}, {}, {}", first, third, fifth)
-    },
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-19/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-19: Ignoring multiple parts of a tuple</span>
@@ -514,10 +350,7 @@ only get a warning about one of them.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let _x = 5;
-    let y = 10;
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-20/src/main.rs}}
 ```
 
 <span class="caption">Listing 18-20: Starting a variable name with an
@@ -532,13 +365,7 @@ variable, whereas `_` doesn’t bind at all. To show a case where this
 distinction matters, Listing 18-21 will provide us with an error.
 
 ```rust,ignore,does_not_compile
-let s = Some(String::from("Hello!"));
-
-if let Some(_s) = s {
-    println!("found a string");
-}
-
-println!("{:?}", s);
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-21/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-21: An unused variable starting with an
@@ -550,13 +377,7 @@ doesn’t ever bind to the value. Listing 18-22 will compile without any errors
 because `s` doesn’t get moved into `_`.
 
 ```rust
-let s = Some(String::from("Hello!"));
-
-if let Some(_) = s {
-    println!("found a string");
-}
-
-println!("{:?}", s);
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-22/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-22: Using an underscore does not bind the
@@ -575,17 +396,7 @@ explicitly matched in the rest of the pattern. In Listing 18-23, we have a
 the values in the `y` and `z` fields.
 
 ```rust
-struct Point {
-    x: i32,
-    y: i32,
-    z: i32,
-}
-
-let origin = Point { x: 0, y: 0, z: 0 };
-
-match origin {
-    Point { x, .. } => println!("x is {}", x),
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-23/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-23: Ignoring all fields of a `Point` except
@@ -602,15 +413,7 @@ shows how to use `..` with a tuple.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let numbers = (2, 4, 8, 16, 32);
-
-    match numbers {
-        (first, .., last) => {
-            println!("Some numbers: {}, {}", first, last);
-        },
-    }
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-24/src/main.rs}}
 ```
 
 <span class="caption">Listing 18-24: Matching only the first and last values in
@@ -627,15 +430,7 @@ compile.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    let numbers = (2, 4, 8, 16, 32);
-
-    match numbers {
-        (.., second, ..) => {
-            println!("Some numbers: {}", second)
-        },
-    }
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-25/src/main.rs}}
 ```
 
 <span class="caption">Listing 18-25: An attempt to use `..` in an ambiguous
@@ -644,11 +439,7 @@ way</span>
 When we compile this example, we get this error:
 
 ```text
-error: `..` can only be used once per tuple or tuple struct pattern
- --> src/main.rs:5:22
-  |
-5 |         (.., second, ..) => {
-  |                      ^^
+{{#include ../listings/ch18-patterns-and-matching/listing-18-25/output.txt}}
 ```
 
 It’s impossible for Rust to determine how many values in the tuple to ignore
@@ -671,13 +462,7 @@ The condition can use variables created in the pattern. Listing 18-26 shows a
 guard of `if x < 5`.
 
 ```rust
-let num = Some(4);
-
-match num {
-    Some(x) if x < 5 => println!("less than five: {}", x),
-    Some(x) => println!("{}", x),
-    None => (),
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-26/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-26: Adding a match guard to a pattern</span>
@@ -705,18 +490,7 @@ problem.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn main() {
-    let x = Some(5);
-    let y = 10;
-
-    match x {
-        Some(50) => println!("Got 50"),
-        Some(n) if n == y => println!("Matched, n = {}", n),
-        _ => println!("Default case, x = {:?}", x),
-    }
-
-    println!("at the end: x = {:?}, y = {}", x, y);
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-27/src/main.rs}}
 ```
 
 <span class="caption">Listing 18-27: Using a match guard to test for equality
@@ -742,13 +516,7 @@ to `4`, `5`, *and* `6`, even though it might look like `if y` only applies to
 `6`.
 
 ```rust
-let x = 4;
-let y = false;
-
-match x {
-    4 | 5 | 6 if y => println!("yes"),
-    _ => println!("no"),
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-28/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-28: Combining multiple patterns with a match
@@ -789,23 +557,7 @@ name this variable `id`, the same as the field, but for this example we’ll use
 a different name.
 
 ```rust
-enum Message {
-    Hello { id: i32 },
-}
-
-let msg = Message::Hello { id: 5 };
-
-match msg {
-    Message::Hello { id: id_variable @ 3..=7 } => {
-        println!("Found an id in range: {}", id_variable)
-    },
-    Message::Hello { id: 10..=12 } => {
-        println!("Found an id in another range")
-    },
-    Message::Hello { id } => {
-        println!("Found some other id: {}", id)
-    },
-}
+{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-29/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 18-29: Using `@` to bind to a value in a pattern
diff --git a/src/ch19-01-unsafe-rust.md b/src/ch19-01-unsafe-rust.md
index c7956e86..7f6d2521 100644
--- a/src/ch19-01-unsafe-rust.md
+++ b/src/ch19-01-unsafe-rust.md
@@ -91,10 +91,7 @@ Listing 19-1 shows how to create an immutable and a mutable raw pointer from
 references.
 
 ```rust
-let mut num = 5;
-
-let r1 = &num as *const i32;
-let r2 = &mut num as *mut i32;
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-01/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-1: Creating raw pointers from references</span>
@@ -117,8 +114,7 @@ is no memory access, or the program might error with a segmentation fault.
 Usually, there is no good reason to write code like this, but it is possible.
 
 ```rust
-let address = 0x012345usize;
-let r = address as *const i32;
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-02/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-2: Creating a raw pointer to an arbitrary
@@ -129,15 +125,7 @@ raw pointers and read the data being pointed to. In Listing 19-3, we use the
 dereference operator `*` on a raw pointer that requires an `unsafe` block.
 
 ```rust,unsafe
-let mut num = 5;
-
-let r1 = &num as *const i32;
-let r2 = &mut num as *mut i32;
-
-unsafe {
-    println!("r1 is: {}", *r1);
-    println!("r2 is: {}", *r2);
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-03/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-3: Dereferencing raw pointers within an
@@ -178,22 +166,14 @@ Here is an unsafe function named `dangerous` that doesn’t do anything in its
 body:
 
 ```rust,unsafe
-unsafe fn dangerous() {}
-
-unsafe {
-    dangerous();
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-01-unsafe-fn/src/main.rs:here}}
 ```
 
 We must call the `dangerous` function within a separate `unsafe` block. If we
 try to call `dangerous` without the `unsafe` block, we’ll get an error:
 
 ```text
-error[E0133]: call to unsafe function requires unsafe function or block
- -->
-  |
-4 |     dangerous();
-  |     ^^^^^^^^^^^ call to unsafe function
+{{#include ../listings/ch19-advanced-features/output-only-01-missing-unsafe/output.txt}}
 ```
 
 By inserting the `unsafe` block around our call to `dangerous`, we’re asserting
@@ -216,14 +196,7 @@ slice and makes it two by splitting the slice at the index given as an
 argument. Listing 19-4 shows how to use `split_at_mut`.
 
 ```rust
-let mut v = vec![1, 2, 3, 4, 5, 6];
-
-let r = &mut v[..];
-
-let (a, b) = r.split_at_mut(3);
-
-assert_eq!(a, &mut [1, 2, 3]);
-assert_eq!(b, &mut [4, 5, 6]);
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-04/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-4: Using the safe `split_at_mut`
@@ -235,14 +208,7 @@ implement `split_at_mut` as a function rather than a method and only for slices
 of `i32` values rather than for a generic type `T`.
 
 ```rust,ignore,does_not_compile
-fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
-    let len = slice.len();
-
-    assert!(mid <= len);
-
-    (&mut slice[..mid],
-     &mut slice[mid..])
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-05/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-5: An attempted implementation of
@@ -261,15 +227,7 @@ slice.
 When we try to compile the code in Listing 19-5, we’ll get an error.
 
 ```text
-error[E0499]: cannot borrow `*slice` as mutable more than once at a time
- -->
-  |
-6 |     (&mut slice[..mid],
-  |           ----- first mutable borrow occurs here
-7 |      &mut slice[mid..])
-  |           ^^^^^ second mutable borrow occurs here
-8 | }
-  | - first borrow ends here
+{{#include ../listings/ch19-advanced-features/listing-19-05/output.txt}}
 ```
 
 Rust’s borrow checker can’t understand that we’re borrowing different parts of
@@ -282,19 +240,7 @@ Listing 19-6 shows how to use an `unsafe` block, a raw pointer, and some calls
 to unsafe functions to make the implementation of `split_at_mut` work.
 
 ```rust,unsafe
-use std::slice;
-
-fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
-    let len = slice.len();
-    let ptr = slice.as_mut_ptr();
-
-    assert!(mid <= len);
-
-    unsafe {
-        (slice::from_raw_parts_mut(ptr, mid),
-         slice::from_raw_parts_mut(ptr.offset(mid as isize), len - mid))
-    }
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-06/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-6: Using unsafe code in the implementation of
@@ -336,14 +282,7 @@ likely crash when the slice is used. This code takes an arbitrary memory
 location and creates a slice 10,000 items long.
 
 ```rust,unsafe
-use std::slice;
-
-let address = 0x01234usize;
-let r = address as *mut i32;
-
-let slice: &[i32] = unsafe {
-    slice::from_raw_parts_mut(r, 10000)
-};
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-07/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-7: Creating a slice from an arbitrary memory
@@ -370,15 +309,7 @@ responsibility falls on the programmer to ensure safety.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,unsafe
-extern "C" {
-    fn abs(input: i32) -> i32;
-}
-
-fn main() {
-    unsafe {
-        println!("Absolute value of -3 according to C: {}", abs(-3));
-    }
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-08/src/main.rs}}
 ```
 
 <span class="caption">Listing 19-8: Declaring and calling an `extern` function
@@ -428,11 +359,7 @@ value.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-static HELLO_WORLD: &str = "Hello, world!";
-
-fn main() {
-    println!("name is: {}", HELLO_WORLD);
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-09/src/main.rs}}
 ```
 
 <span class="caption">Listing 19-9: Defining and using an immutable static
@@ -461,21 +388,7 @@ static variable named `COUNTER`.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,unsafe
-static mut COUNTER: u32 = 0;
-
-fn add_to_count(inc: u32) {
-    unsafe {
-        COUNTER += inc;
-    }
-}
-
-fn main() {
-    add_to_count(3);
-
-    unsafe {
-        println!("COUNTER: {}", COUNTER);
-    }
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-10/src/main.rs}}
 ```
 
 <span class="caption">Listing 19-10: Reading from or writing to a mutable
@@ -502,13 +415,7 @@ compiler can’t verify. We can declare that a trait is `unsafe` by adding the
 `unsafe` too, as shown in Listing 19-11.
 
 ```rust,unsafe
-unsafe trait Foo {
-    // methods go here
-}
-
-unsafe impl Foo for i32 {
-    // method implementations go here
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-11/src/main.rs}}
 ```
 
 <span class="caption">Listing 19-11: Defining and implementing an unsafe
diff --git a/src/ch19-03-advanced-traits.md b/src/ch19-03-advanced-traits.md
index c959f231..9c334286 100644
--- a/src/ch19-03-advanced-traits.md
+++ b/src/ch19-03-advanced-traits.md
@@ -28,11 +28,7 @@ Chapter 13, we mentioned that the definition of the `Iterator` trait is as
 shown in Listing 19-12.
 
 ```rust
-pub trait Iterator {
-    type Item;
-
-    fn next(&mut self) -> Option<Self::Item>;
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-12/src/lib.rs}}
 ```
 
 <span class="caption">Listing 19-12: The definition of the `Iterator` trait
@@ -54,20 +50,14 @@ Listing 13-21, we specified that the `Item` type was `u32`:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-impl Iterator for Counter {
-    type Item = u32;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        // --snip--
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-13-21-reproduced/src/lib.rs:ch19}}
 ```
 
 This syntax seems comparable to that of generics. So why not just define the
 `Iterator` trait with generics, as shown in Listing 19-13?
 
 ```rust
-pub trait Iterator<T> {
-    fn next(&mut self) -> Option<T>;
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-13/src/lib.rs}}
 ```
 
 <span class="caption">Listing 19-13: A hypothetical definition of the
@@ -111,29 +101,7 @@ struct:
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::ops::Add;
-
-#[derive(Debug, PartialEq)]
-struct Point {
-    x: i32,
-    y: i32,
-}
-
-impl Add for Point {
-    type Output = Point;
-
-    fn add(self, other: Point) -> Point {
-        Point {
-            x: self.x + other.x,
-            y: self.y + other.y,
-        }
-    }
-}
-
-fn main() {
-    assert_eq!(Point { x: 1, y: 0 } + Point { x: 2, y: 3 },
-               Point { x: 3, y: 3 });
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-14/src/main.rs}}
 ```
 
 <span class="caption">Listing 19-14: Implementing the `Add` trait to overload
@@ -176,18 +144,7 @@ implementation of `Add` do the conversion correctly. We can implement `Add` for
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-use std::ops::Add;
-
-struct Millimeters(u32);
-struct Meters(u32);
-
-impl Add<Meters> for Millimeters {
-    type Output = Millimeters;
-
-    fn add(self, other: Meters) -> Millimeters {
-        Millimeters(self.0 + (other.0 * 1000))
-    }
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-15/src/lib.rs}}
 ```
 
 <span class="caption">Listing 19-15: Implementing the `Add` trait on
@@ -229,33 +186,7 @@ on it. Each `fly` method does something different.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-trait Pilot {
-    fn fly(&self);
-}
-
-trait Wizard {
-    fn fly(&self);
-}
-
-struct Human;
-
-impl Pilot for Human {
-    fn fly(&self) {
-        println!("This is your captain speaking.");
-    }
-}
-
-impl Wizard for Human {
-    fn fly(&self) {
-        println!("Up!");
-    }
-}
-
-impl Human {
-    fn fly(&self) {
-        println!("*waving arms furiously*");
-    }
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-16/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-16: Two traits are defined to have a `fly`
@@ -268,38 +199,7 @@ the method that is directly implemented on the type, as shown in Listing 19-17.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# trait Pilot {
-#     fn fly(&self);
-# }
-#
-# trait Wizard {
-#     fn fly(&self);
-# }
-#
-# struct Human;
-#
-# impl Pilot for Human {
-#     fn fly(&self) {
-#         println!("This is your captain speaking.");
-#     }
-# }
-#
-# impl Wizard for Human {
-#     fn fly(&self) {
-#         println!("Up!");
-#     }
-# }
-#
-# impl Human {
-#     fn fly(&self) {
-#         println!("*waving arms furiously*");
-#     }
-# }
-#
-fn main() {
-    let person = Human;
-    person.fly();
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-17/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-17: Calling `fly` on an instance of
@@ -315,40 +215,7 @@ Listing 19-18 demonstrates this syntax.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# trait Pilot {
-#     fn fly(&self);
-# }
-#
-# trait Wizard {
-#     fn fly(&self);
-# }
-#
-# struct Human;
-#
-# impl Pilot for Human {
-#     fn fly(&self) {
-#         println!("This is your captain speaking.");
-#     }
-# }
-#
-# impl Wizard for Human {
-#     fn fly(&self) {
-#         println!("Up!");
-#     }
-# }
-#
-# impl Human {
-#     fn fly(&self) {
-#         println!("*waving arms furiously*");
-#     }
-# }
-#
-fn main() {
-    let person = Human;
-    Pilot::fly(&person);
-    Wizard::fly(&person);
-    person.fly();
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-18/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-18: Specifying which trait’s `fly` method we
@@ -363,9 +230,7 @@ disambiguate.
 Running this code prints the following:
 
 ```text
-This is your captain speaking.
-Up!
-*waving arms furiously*
+{{#include ../listings/ch19-advanced-features/listing-19-18/output.txt}}
 ```
 
 Because the `fly` method takes a `self` parameter, if we had two *types* that
@@ -382,27 +247,7 @@ associated function `baby_name` defined on `Dog` directly.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-trait Animal {
-    fn baby_name() -> String;
-}
-
-struct Dog;
-
-impl Dog {
-    fn baby_name() -> String {
-        String::from("Spot")
-    }
-}
-
-impl Animal for Dog {
-    fn baby_name() -> String {
-        String::from("puppy")
-    }
-}
-
-fn main() {
-    println!("A baby dog is called a {}", Dog::baby_name());
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-19/src/main.rs}}
 ```
 
 <span class="caption">Listing 19-19: A trait with an associated function and a
@@ -420,7 +265,7 @@ In `main`, we call the `Dog::baby_name` function, which calls the associated
 function defined on `Dog` directly. This code prints the following:
 
 ```text
-A baby dog is called a Spot
+{{#include ../listings/ch19-advanced-features/listing-19-19/output.txt}}
 ```
 
 This output isn’t what we wanted. We want to call the `baby_name` function that
@@ -432,9 +277,7 @@ Listing 19-20, we’ll get a compilation error.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,ignore,does_not_compile
-fn main() {
-    println!("A baby dog is called a {}", Animal::baby_name());
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-20/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-20: Attempting to call the `baby_name`
@@ -446,13 +289,7 @@ thus doesn’t have a `self` parameter, Rust can’t figure out which
 implementation of `Animal::baby_name` we want. We’ll get this compiler error:
 
 ```text
-error[E0283]: type annotations required: cannot resolve `_: Animal`
-  --> src/main.rs:20:43
-   |
-20 |     println!("A baby dog is called a {}", Animal::baby_name());
-   |                                           ^^^^^^^^^^^^^^^^^
-   |
-   = note: required by `Animal::baby_name`
+{{#include ../listings/ch19-advanced-features/listing-19-20/output.txt}}
 ```
 
 To disambiguate and tell Rust that we want to use the implementation of
@@ -462,27 +299,7 @@ demonstrates how to use fully qualified syntax.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# trait Animal {
-#     fn baby_name() -> String;
-# }
-#
-# struct Dog;
-#
-# impl Dog {
-#     fn baby_name() -> String {
-#         String::from("Spot")
-#     }
-# }
-#
-# impl Animal for Dog {
-#     fn baby_name() -> String {
-#         String::from("puppy")
-#     }
-# }
-#
-fn main() {
-    println!("A baby dog is called a {}", <Dog as Animal>::baby_name());
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-21/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-21: Using fully qualified syntax to specify
@@ -495,7 +312,7 @@ implemented on `Dog` by saying that we want to treat the `Dog` type as an
 `Animal` for this function call. This code will now print what we want:
 
 ```text
-A baby dog is called a puppy
+{{#include ../listings/ch19-advanced-features/listing-19-21/output.txt}}
 ```
 
 In general, fully qualified syntax is defined as follows:
@@ -542,19 +359,7 @@ the trait. Listing 19-22 shows an implementation of the `OutlinePrint` trait.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::fmt;
-
-trait OutlinePrint: fmt::Display {
-    fn outline_print(&self) {
-        let output = self.to_string();
-        let len = output.len();
-        println!("{}", "*".repeat(len + 4));
-        println!("*{}*", " ".repeat(len + 2));
-        println!("* {} *", output);
-        println!("*{}*", " ".repeat(len + 2));
-        println!("{}", "*".repeat(len + 4));
-    }
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-22/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-22: Implementing the `OutlinePrint` trait that
@@ -572,27 +377,14 @@ doesn’t implement `Display`, such as the `Point` struct:
 
 <span class="filename">Filename: src/main.rs</span>
 
-```rust
-# trait OutlinePrint {}
-struct Point {
-    x: i32,
-    y: i32,
-}
-
-impl OutlinePrint for Point {}
+```rust,ignore,does_not_compile
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/src/main.rs:here}}
 ```
 
 We get an error saying that `Display` is required but not implemented:
 
 ```text
-error[E0277]: the trait bound `Point: std::fmt::Display` is not satisfied
-  --> src/main.rs:20:6
-   |
-20 | impl OutlinePrint for Point {}
-   |      ^^^^^^^^^^^^ `Point` cannot be formatted with the default formatter;
-try using `:?` instead if you are using a format string
-   |
-   = help: the trait `std::fmt::Display` is not implemented for `Point`
+{{#include ../listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/output.txt}}
 ```
 
 To fix this, we implement `Display` on `Point` and satisfy the constraint that
@@ -601,18 +393,7 @@ To fix this, we implement `Display` on `Point` and satisfy the constraint that
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-# struct Point {
-#     x: i32,
-#     y: i32,
-# }
-#
-use std::fmt;
-
-impl fmt::Display for Point {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "({}, {})", self.x, self.y)
-    }
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-03-impl-display-for-point/src/main.rs:here}}
 ```
 
 Then implementing the `OutlinePrint` trait on `Point` will compile
@@ -644,20 +425,7 @@ that holds an instance of `Vec<T>`; then we can implement `Display` on
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-use std::fmt;
-
-struct Wrapper(Vec<String>);
-
-impl fmt::Display for Wrapper {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "[{}]", self.0.join(", "))
-    }
-}
-
-fn main() {
-    let w = Wrapper(vec![String::from("hello"), String::from("world")]);
-    println!("w = {}", w);
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-23/src/main.rs}}
 ```
 
 <span class="caption">Listing 19-23: Creating a `Wrapper` type around
diff --git a/src/ch19-04-advanced-types.md b/src/ch19-04-advanced-types.md
index e1e46b1e..f20d6b4d 100644
--- a/src/ch19-04-advanced-types.md
+++ b/src/ch19-04-advanced-types.md
@@ -43,7 +43,7 @@ alias* to give an existing type another name. For this we use the `type`
 keyword. For example, we can create the alias `Kilometers` to `i32` like so:
 
 ```rust
-type Kilometers = i32;
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-04-kilometers-alias/src/main.rs:here}}
 ```
 
 Now, the alias `Kilometers` is a *synonym* for `i32`; unlike the `Millimeters`
@@ -52,12 +52,7 @@ new type. Values that have the type `Kilometers` will be treated the same as
 values of type `i32`:
 
 ```rust
-type Kilometers = i32;
-
-let x: i32 = 5;
-let y: Kilometers = 5;
-
-println!("x + y = {}", x + y);
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-04-kilometers-alias/src/main.rs:there}}
 ```
 
 Because `Kilometers` and `i32` are the same type, we can add values of both
@@ -77,16 +72,7 @@ over the code can be tiresome and error prone. Imagine having a project full of
 code like that in Listing 19-24.
 
 ```rust
-let f: Box<dyn Fn() + Send + 'static> = Box::new(|| println!("hi"));
-
-fn takes_long_type(f: Box<dyn Fn() + Send + 'static>) {
-    // --snip--
-}
-
-fn returns_long_type() -> Box<dyn Fn() + Send + 'static> {
-    // --snip--
-#     Box::new(|| ())
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-24/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-24: Using a long type in many places</span>
@@ -96,18 +82,7 @@ Listing 19-25, we’ve introduced an alias named `Thunk` for the verbose type an
 can replace all uses of the type with the shorter alias `Thunk`.
 
 ```rust
-type Thunk = Box<dyn Fn() + Send + 'static>;
-
-let f: Thunk = Box::new(|| println!("hi"));
-
-fn takes_long_type(f: Thunk) {
-    // --snip--
-}
-
-fn returns_long_type() -> Thunk {
-    // --snip--
-#     Box::new(|| ())
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-25/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 19-25: Introducing a type alias `Thunk` to reduce
@@ -127,23 +102,14 @@ possible I/O errors. Many of the functions in `std::io` will be returning
 the `Write` trait:
 
 ```rust
-use std::io::Error;
-use std::fmt;
-
-pub trait Write {
-    fn write(&mut self, buf: &[u8]) -> Result<usize, Error>;
-    fn flush(&mut self) -> Result<(), Error>;
-
-    fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>;
-    fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<(), Error>;
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-05-write-trait/src/lib.rs}}
 ```
 
 The `Result<..., Error>` is repeated a lot. As such, `std::io` has this type of
 alias declaration:
 
 ```rust
-type Result<T> = std::result::Result<T, std::io::Error>;
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-06-result-alias/src/lib.rs:here}}
 ```
 
 Because this declaration is in the `std::io` module, we can use the fully
@@ -151,14 +117,8 @@ qualified alias `std::io::Result<T>`—that is, a `Result<T, E>` with the `E`
 filled in as `std::io::Error`. The `Write` trait function signatures end up
 looking like this:
 
-```rust,ignore
-pub trait Write {
-    fn write(&mut self, buf: &[u8]) -> Result<usize>;
-    fn flush(&mut self) -> Result<()>;
-
-    fn write_all(&mut self, buf: &[u8]) -> Result<()>;
-    fn write_fmt(&mut self, fmt: Arguments) -> Result<()>;
-}
+```rust
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-06-result-alias/src/lib.rs:there}}
 ```
 
 The type alias helps in two ways: it makes code easier to write *and* it gives
@@ -173,10 +133,8 @@ Rust has a special type named `!` that’s known in type theory lingo as the
 because it stands in the place of the return type when a function will never
 return. Here is an example:
 
-```rust,ignore
-fn bar() -> ! {
-    // --snip--
-}
+```rust
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-07-never-type/src/lib.rs:here}}
 ```
 
 This code is read as “the function `bar` returns never.” Functions that return
@@ -186,15 +144,8 @@ so `bar` can never possibly return.
 But what use is a type you can never create values for? Recall the code from
 Listing 2-5; we’ve reproduced part of it here in Listing 19-26.
 
-```rust
-# let guess = "3";
-# loop {
-let guess: u32 = match guess.trim().parse() {
-    Ok(num) => num,
-    Err(_) => continue,
-};
-# break;
-# }
+```rust,ignore
+{{#rustdoc_include ../listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs:ch19}}
 ```
 
 <span class="caption">Listing 19-26: A `match` with an arm that ends in
@@ -206,10 +157,7 @@ At the time, we skipped over some details in this code. In Chapter 6 in [“The
 for example, the following code doesn’t work:
 
 ```rust,ignore,does_not_compile
-let guess = match guess.trim().parse() {
-    Ok(_) => 5,
-    Err(_) => "hello",
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-08-match-arms-different-types/src/main.rs:here}}
 ```
 
 The type of `guess` in this code would have to be an integer *and* a string,
@@ -233,14 +181,7 @@ function that we call on `Option<T>` values to produce a value or panic? Here
 is its definition:
 
 ```rust,ignore
-impl<T> Option<T> {
-    pub fn unwrap(self) -> T {
-        match self {
-            Some(val) => val,
-            None => panic!("called `Option::unwrap()` on a `None` value"),
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-09-unwrap-definition/src/lib.rs:here}}
 ```
 
 In this code, the same thing happens as in the `match` in Listing 19-26: Rust
@@ -252,11 +193,7 @@ returning a value from `unwrap`, so this code is valid.
 One final expression that has the type `!` is a `loop`:
 
 ```rust,ignore
-print!("forever ");
-
-loop {
-    print!("and ever ");
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-10-loop-returns-never/src/main.rs:here}}
 ```
 
 Here, the loop never ends, so `!` is the value of the expression. However, this
@@ -278,8 +215,7 @@ we can’t create a variable of type `str`, nor can we take an argument of type
 `str`. Consider the following code, which does not work:
 
 ```rust,ignore,does_not_compile
-let s1: str = "Hello there!";
-let s2: str = "How's it going?";
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-11-cant-create-str/src/main.rs:here}}
 ```
 
 Rust needs to know how much memory to allocate for any value of a particular
@@ -321,17 +257,13 @@ In addition, Rust implicitly adds a bound on `Sized` to every generic function.
 That is, a generic function definition like this:
 
 ```rust,ignore
-fn generic<T>(t: T) {
-    // --snip--
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-12-generic-fn-definition/src/lib.rs}}
 ```
 
 is actually treated as though we had written this:
 
 ```rust,ignore
-fn generic<T: Sized>(t: T) {
-    // --snip--
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-13-generic-implicit-sized-bound/src/lib.rs}}
 ```
 
 By default, generic functions will work only on types that have a known size at
@@ -339,9 +271,7 @@ compile time. However, you can use the following special syntax to relax this
 restriction:
 
 ```rust,ignore
-fn generic<T: ?Sized>(t: &T) {
-    // --snip--
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-14-generic-maybe-sized/src/lib.rs}}
 ```
 
 A trait bound on `?Sized` is the opposite of a trait bound on `Sized`: we would
diff --git a/src/ch19-05-advanced-functions-and-closures.md b/src/ch19-05-advanced-functions-and-closures.md
index 2955114a..ac452265 100644
--- a/src/ch19-05-advanced-functions-and-closures.md
+++ b/src/ch19-05-advanced-functions-and-closures.md
@@ -17,19 +17,7 @@ similar to that of closures, as shown in Listing 19-27.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust
-fn add_one(x: i32) -> i32 {
-    x + 1
-}
-
-fn do_twice(f: fn(i32) -> i32, arg: i32) -> i32 {
-    f(arg) + f(arg)
-}
-
-fn main() {
-    let answer = do_twice(add_one, 5);
-
-    println!("The answer is: {}", answer);
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-27/src/main.rs}}
 ```
 
 <span class="caption">Listing 19-27: Using the `fn` type to accept a function
@@ -59,22 +47,14 @@ function, let’s look at a use of `map`. To use the `map` function to turn a
 vector of numbers into a vector of strings, we could use a closure, like this:
 
 ```rust
-let list_of_numbers = vec![1, 2, 3];
-let list_of_strings: Vec<String> = list_of_numbers
-    .iter()
-    .map(|i| i.to_string())
-    .collect();
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-15-map-closure/src/main.rs:here}}
 ```
 
 Or we could name a function as the argument to `map` instead of the closure,
 like this:
 
 ```rust
-let list_of_numbers = vec![1, 2, 3];
-let list_of_strings: Vec<String> = list_of_numbers
-    .iter()
-    .map(ToString::to_string)
-    .collect();
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-16-map-function/src/main.rs:here}}
 ```
 
 Note that we must use the fully qualified syntax that we talked about earlier
@@ -92,15 +72,7 @@ implement the closure traits, which means we can specify the initializer
 functions as arguments for methods that take closures, like so:
 
 ```rust
-enum Status {
-    Value(u32),
-    Stop,
-}
-
-let list_of_statuses: Vec<Status> =
-    (0u32..20)
-    .map(Status::Value)
-    .collect();
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-17-map-initializer/src/main.rs:here}}
 ```
 
 Here we create `Status::Value` instances using each `u32` value in the range
@@ -120,25 +92,13 @@ pointer `fn` as a return type, for example.
 The following code tries to return a closure directly, but it won’t compile:
 
 ```rust,ignore,does_not_compile
-fn returns_closure() -> Fn(i32) -> i32 {
-    |x| x + 1
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-18-returns-closure/src/lib.rs}}
 ```
 
 The compiler error is as follows:
 
 ```text
-error[E0277]: the trait bound `std::ops::Fn(i32) -> i32 + 'static:
-std::marker::Sized` is not satisfied
- -->
-  |
-1 | fn returns_closure() -> Fn(i32) -> i32 {
-  |                         ^^^^^^^^^^^^^^ `std::ops::Fn(i32) -> i32 + 'static`
-  does not have a constant size known at compile-time
-  |
-  = help: the trait `std::marker::Sized` is not implemented for
-  `std::ops::Fn(i32) -> i32 + 'static`
-  = note: the return type of a function must have a statically known size
+{{#include ../listings/ch19-advanced-features/no-listing-18-returns-closure/output.txt}}
 ```
 
 The error references the `Sized` trait again! Rust doesn’t know how much space
@@ -146,9 +106,7 @@ it will need to store the closure. We saw a solution to this problem earlier.
 We can use a trait object:
 
 ```rust
-fn returns_closure() -> Box<dyn Fn(i32) -> i32> {
-    Box::new(|x| x + 1)
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-19-returns-closure-trait-object/src/lib.rs}}
 ```
 
 This code will compile just fine. For more about trait objects, refer to the
diff --git a/src/ch19-06-macros.md b/src/ch19-06-macros.md
index fbb22469..7c4661c5 100644
--- a/src/ch19-06-macros.md
+++ b/src/ch19-06-macros.md
@@ -78,18 +78,7 @@ Listing 19-28 shows a slightly simplified definition of the `vec!` macro.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-#[macro_export]
-macro_rules! vec {
-    ( $( $x:expr ),* ) => {
-        {
-            let mut temp_vec = Vec::new();
-            $(
-                temp_vec.push($x);
-            )*
-            temp_vec
-        }
-    };
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-28/src/lib.rs}}
 ```
 
 <span class="caption">Listing 19-28: A simplified version of the `vec!` macro
@@ -221,16 +210,8 @@ programmer to write code like Listing 19-30 using our crate.
 
 <span class="filename">Filename: src/main.rs</span>
 
-```rust,ignore
-use hello_macro::HelloMacro;
-use hello_macro_derive::HelloMacro;
-
-#[derive(HelloMacro)]
-struct Pancakes;
-
-fn main() {
-    Pancakes::hello_macro();
-}
+```rust,ignore,does_not_compile
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-30/src/main.rs}}
 ```
 
 <span class="caption">Listing 19-30: The code a user of our crate will be able
@@ -248,28 +229,14 @@ Next, we’ll define the `HelloMacro` trait and its associated function:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub trait HelloMacro {
-    fn hello_macro();
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/hello_macro/src/lib.rs}}
 ```
 
 We have a trait and its function. At this point, our crate user could implement
 the trait to achieve the desired functionality, like so:
 
 ```rust,ignore
-use hello_macro::HelloMacro;
-
-struct Pancakes;
-
-impl HelloMacro for Pancakes {
-    fn hello_macro() {
-        println!("Hello, Macro! My name is Pancakes!");
-    }
-}
-
-fn main() {
-    Pancakes::hello_macro();
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/no-listing-20-impl-hellomacro-for-pancakes/pancakes/src/main.rs}}
 ```
 
 However, they would need to write the implementation block for each type they
@@ -311,12 +278,7 @@ in a moment, so we need to add them as dependencies. Add the following to the
 <span class="filename">Filename: hello_macro_derive/Cargo.toml</span>
 
 ```toml
-[lib]
-proc-macro = true
-
-[dependencies]
-syn = "0.14.4"
-quote = "0.6.3"
+{{#include ../listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml:7:12}}
 ```
 
 To start defining the procedural macro, place the code in Listing 19-31 into
@@ -332,22 +294,8 @@ https://github.com/rust-lang/rust/pull/54658
 https://github.com/rust-lang/rust/issues/55599
 -->
 
-```rust,ignore
-extern crate proc_macro;
-
-use crate::proc_macro::TokenStream;
-use quote::quote;
-use syn;
-
-#[proc_macro_derive(HelloMacro)]
-pub fn hello_macro_derive(input: TokenStream) -> TokenStream {
-    // Construct a representation of Rust code as a syntax tree
-    // that we can manipulate
-    let ast = syn::parse(input).unwrap();
-
-    // Build the trait implementation
-    impl_hello_macro(&ast)
-}
+```rust,ignore,does_not_compile
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/src/lib.rs}}
 ```
 
 <span class="caption">Listing 19-31: Code that most procedural macro crates
@@ -441,17 +389,7 @@ into a `DeriveInput` instance, let’s generate the code that implements the
 <span class="filename">Filename: hello_macro_derive/src/lib.rs</span>
 
 ```rust,ignore
-fn impl_hello_macro(ast: &syn::DeriveInput) -> TokenStream {
-    let name = &ast.ident;
-    let gen = quote! {
-        impl HelloMacro for #name {
-            fn hello_macro() {
-                println!("Hello, Macro! My name is {}", stringify!(#name));
-            }
-        }
-    };
-    gen.into()
-}
+{{#rustdoc_include ../listings/ch19-advanced-features/listing-19-33/hello_macro/hello_macro_derive/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 19-33: Implementing the `HelloMacro` trait using
@@ -502,9 +440,7 @@ crate’s *Cargo.toml*. If you’re publishing your versions of `hello_macro` an
 dependencies; if not, you can specify them as `path` dependencies as follows:
 
 ```toml
-[dependencies]
-hello_macro = { path = "../hello_macro" }
-hello_macro_derive = { path = "../hello_macro/hello_macro_derive" }
+{{#include ../listings/ch19-advanced-features/no-listing-21-pancakes/pancakes/Cargo.toml:7:9}}
 ```
 
 Put the code in Listing 19-30 into *src/main.rs*, and run `cargo run`: it
diff --git a/src/ch20-01-single-threaded.md b/src/ch20-01-single-threaded.md
index a2617c00..b46d39f6 100644
--- a/src/ch20-01-single-threaded.md
+++ b/src/ch20-01-single-threaded.md
@@ -38,17 +38,7 @@ an incoming stream, it will print `Connection established!`.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,no_run
-use std::net::TcpListener;
-
-fn main() {
-    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
-
-    for stream in listener.incoming() {
-        let stream = stream.unwrap();
-
-        println!("Connection established!");
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-01/src/main.rs}}
 ```
 
 <span class="caption">Listing 20-1: Listening for incoming streams and printing
@@ -140,27 +130,7 @@ look like Listing 20-2.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,no_run
-use std::io::prelude::*;
-use std::net::TcpStream;
-use std::net::TcpListener;
-
-fn main() {
-    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
-
-    for stream in listener.incoming() {
-        let stream = stream.unwrap();
-
-        handle_connection(stream);
-    }
-}
-
-fn handle_connection(mut stream: TcpStream) {
-    let mut buffer = [0; 512];
-
-    stream.read(&mut buffer).unwrap();
-
-    println!("Request: {}", String::from_utf8_lossy(&buffer[..]));
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-02/src/main.rs}}
 ```
 
 <span class="caption">Listing 20-2: Reading from the `TcpStream` and printing
@@ -200,7 +170,7 @@ program’s output in the terminal will now look similar to this:
 ```text
 $ cargo run
    Compiling hello v0.1.0 (file:///projects/hello)
-    Finished dev [unoptimized + debuginfo] target(s) in 0.42 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 0.42s
      Running `target/debug/hello`
 Request: GET / HTTP/1.1
 Host: 127.0.0.1:7878
@@ -295,19 +265,8 @@ Listing 20-3.
 
 <span class="filename">Filename: src/main.rs</span>
 
-```rust
-# use std::io::prelude::*;
-# use std::net::TcpStream;
-fn handle_connection(mut stream: TcpStream) {
-    let mut buffer = [0; 512];
-
-    stream.read(&mut buffer).unwrap();
-
-    let response = "HTTP/1.1 200 OK\r\n\r\n";
-
-    stream.write(response.as_bytes()).unwrap();
-    stream.flush().unwrap();
-}
+```rust,no_run
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-03/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 20-3: Writing a tiny successful HTTP response to
@@ -340,17 +299,7 @@ possibility.
 <span class="filename">Filename: hello.html</span>
 
 ```html
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="utf-8">
-    <title>Hello!</title>
-  </head>
-  <body>
-    <h1>Hello!</h1>
-    <p>Hi from Rust</p>
-  </body>
-</html>
+{{#include ../listings/ch20-web-server/listing-20-04/hello.html}}
 ```
 
 <span class="caption">Listing 20-4: A sample HTML file to return in a
@@ -363,23 +312,8 @@ and send it.
 
 <span class="filename">Filename: src/main.rs</span>
 
-```rust
-# use std::io::prelude::*;
-# use std::net::TcpStream;
-use std::fs;
-// --snip--
-
-fn handle_connection(mut stream: TcpStream) {
-    let mut buffer = [0; 512];
-    stream.read(&mut buffer).unwrap();
-
-    let contents = fs::read_to_string("hello.html").unwrap();
-
-    let response = format!("HTTP/1.1 200 OK\r\n\r\n{}", contents);
-
-    stream.write(response.as_bytes()).unwrap();
-    stream.flush().unwrap();
-}
+```rust,no_run
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-05/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 20-5: Sending the contents of *hello.html* as the
@@ -415,29 +349,8 @@ received against what we know a request for */* looks like and adds `if` and
 
 <span class="filename">Filename: src/main.rs</span>
 
-```rust
-# use std::io::prelude::*;
-# use std::net::TcpStream;
-# use std::fs;
-// --snip--
-
-fn handle_connection(mut stream: TcpStream) {
-    let mut buffer = [0; 512];
-    stream.read(&mut buffer).unwrap();
-
-    let get = b"GET / HTTP/1.1\r\n";
-
-    if buffer.starts_with(get) {
-        let contents = fs::read_to_string("hello.html").unwrap();
-
-        let response = format!("HTTP/1.1 200 OK\r\n\r\n{}", contents);
-
-        stream.write(response.as_bytes()).unwrap();
-        stream.flush().unwrap();
-    } else {
-        // some other request
-    }
-}
+```rust,no_run
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-06/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 20-6: Matching the request and handling requests
@@ -467,24 +380,8 @@ indicating the response to the end user.
 
 <span class="filename">Filename: src/main.rs</span>
 
-```rust
-# use std::io::prelude::*;
-# use std::net::TcpStream;
-# use std::fs;
-# fn handle_connection(mut stream: TcpStream) {
-# if true {
-// --snip--
-
-} else {
-    let status_line = "HTTP/1.1 404 NOT FOUND\r\n\r\n";
-    let contents = fs::read_to_string("404.html").unwrap();
-
-    let response = format!("{}{}", status_line, contents);
-
-    stream.write(response.as_bytes()).unwrap();
-    stream.flush().unwrap();
-}
-# }
+```rust,no_run
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-07/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 20-7: Responding with status code 404 and an
@@ -499,17 +396,7 @@ any HTML you want or use the example HTML in Listing 20-8.
 <span class="filename">Filename: 404.html</span>
 
 ```html
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="utf-8">
-    <title>Hello!</title>
-  </head>
-  <body>
-    <h1>Oops!</h1>
-    <p>Sorry, I don't know what you're asking for.</p>
-  </body>
-</html>
+{{#include ../listings/ch20-web-server/listing-20-08/404.html}}
 ```
 
 <span class="caption">Listing 20-8: Sample content for the page to send back
@@ -532,32 +419,8 @@ the large `if` and `else` blocks.
 
 <span class="filename">Filename: src/main.rs</span>
 
-```rust
-# use std::io::prelude::*;
-# use std::net::TcpStream;
-# use std::fs;
-// --snip--
-
-fn handle_connection(mut stream: TcpStream) {
-#     let mut buffer = [0; 512];
-#     stream.read(&mut buffer).unwrap();
-#
-#     let get = b"GET / HTTP/1.1\r\n";
-    // --snip--
-
-    let (status_line, filename) = if buffer.starts_with(get) {
-        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
-    } else {
-        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
-    };
-
-    let contents = fs::read_to_string(filename).unwrap();
-
-    let response = format!("{}{}", status_line, contents);
-
-    stream.write(response.as_bytes()).unwrap();
-    stream.flush().unwrap();
-}
+```rust,no_run
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-09/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 20-9: Refactoring the `if` and `else` blocks to
diff --git a/src/ch20-02-multithreaded.md b/src/ch20-02-multithreaded.md
index 40d3a172..89182bff 100644
--- a/src/ch20-02-multithreaded.md
+++ b/src/ch20-02-multithreaded.md
@@ -17,33 +17,8 @@ for 5 seconds before responding.
 
 <span class="filename">Filename: src/main.rs</span>
 
-```rust
-use std::thread;
-use std::time::Duration;
-# use std::io::prelude::*;
-# use std::net::TcpStream;
-# use std::fs::File;
-// --snip--
-
-fn handle_connection(mut stream: TcpStream) {
-#     let mut buffer = [0; 512];
-#     stream.read(&mut buffer).unwrap();
-    // --snip--
-
-    let get = b"GET / HTTP/1.1\r\n";
-    let sleep = b"GET /sleep HTTP/1.1\r\n";
-
-    let (status_line, filename) = if buffer.starts_with(get) {
-        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
-    } else if buffer.starts_with(sleep) {
-        thread::sleep(Duration::from_secs(5));
-        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
-    } else {
-        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
-    };
-
-    // --snip--
-}
+```rust,no_run
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-10/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 20-10: Simulating a slow request by recognizing
@@ -124,23 +99,7 @@ new thread to handle each stream within the `for` loop.
 <span class="filename">Filename: src/main.rs</span>
 
 ```rust,no_run
-# use std::thread;
-# use std::io::prelude::*;
-# use std::net::TcpListener;
-# use std::net::TcpStream;
-#
-fn main() {
-    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
-
-    for stream in listener.incoming() {
-        let stream = stream.unwrap();
-
-        thread::spawn(|| {
-            handle_connection(stream);
-        });
-    }
-}
-# fn handle_connection(mut stream: TcpStream) {}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-11/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 20-11: Spawning a new thread for each
@@ -162,31 +121,8 @@ struct we want to use instead of `thread::spawn`.
 
 <span class="filename">Filename: src/main.rs</span>
 
-```rust,no_run
-# use std::thread;
-# use std::io::prelude::*;
-# use std::net::TcpListener;
-# use std::net::TcpStream;
-# struct ThreadPool;
-# impl ThreadPool {
-#    fn new(size: u32) -> ThreadPool { ThreadPool }
-#    fn execute<F>(&self, f: F)
-#        where F: FnOnce() + Send + 'static {}
-# }
-#
-fn main() {
-    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
-    let pool = ThreadPool::new(4);
-
-    for stream in listener.incoming() {
-        let stream = stream.unwrap();
-
-        pool.execute(|| {
-            handle_connection(stream);
-        });
-    }
-}
-# fn handle_connection(mut stream: TcpStream) {}
+```rust,ignore,does_not_compile
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-12/src/main.rs:here}}
 ```
 
 <span class="caption">Listing 20-12: Our ideal `ThreadPool` interface</span>
@@ -205,16 +141,7 @@ compiler errors from `cargo check` to drive our development. Here is the first
 error we get:
 
 ```text
-$ cargo check
-   Compiling hello v0.1.0 (file:///projects/hello)
-error[E0433]: failed to resolve. Use of undeclared type or module `ThreadPool`
-  --> src\main.rs:10:16
-   |
-10 |     let pool = ThreadPool::new(4);
-   |                ^^^^^^^^^^^^^^^ Use of undeclared type or module
-   `ThreadPool`
-
-error: aborting due to previous error
+{{#include ../listings/ch20-web-server/listing-20-12/output.txt}}
 ```
 
 Great! This error tells us we need a `ThreadPool` type or module, so we’ll
@@ -231,7 +158,7 @@ definition of a `ThreadPool` struct that we can have for now:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub struct ThreadPool;
+{{#rustdoc_include ../listings/ch20-web-server/no-listing-01-define-threadpool-struct/src/lib.rs}}
 ```
 
 Then create a new directory, *src/bin*, and move the binary crate rooted in
@@ -244,22 +171,14 @@ following code to the top of *src/bin/main.rs*:
 <span class="filename">Filename: src/bin/main.rs</span>
 
 ```rust,ignore
-use hello::ThreadPool;
+{{#rustdoc_include ../listings/ch20-web-server/no-listing-01-define-threadpool-struct/src/bin/main.rs:here}}
 ```
 
 This code still won’t work, but let’s check it again to get the next error that
 we need to address:
 
 ```text
-$ cargo check
-   Compiling hello v0.1.0 (file:///projects/hello)
-error[E0599]: no function or associated item named `new` found for type
-`hello::ThreadPool` in the current scope
- --> src/bin/main.rs:13:16
-   |
-13 |     let pool = ThreadPool::new(4);
-   |                ^^^^^^^^^^^^^^^ function or associated item not found in
-   `hello::ThreadPool`
+{{#include ../listings/ch20-web-server/no-listing-01-define-threadpool-struct/output.txt}}
 ```
 
 This error indicates that next we need to create an associated function named
@@ -271,13 +190,7 @@ characteristics:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-pub struct ThreadPool;
-
-impl ThreadPool {
-    pub fn new(size: usize) -> ThreadPool {
-        ThreadPool
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/no-listing-02-impl-threadpool-new/src/lib.rs:here}}
 ```
 
 We chose `usize` as the type of the `size` parameter, because we know that a
@@ -289,27 +202,11 @@ ignore --> section of Chapter 3.
 Let’s check the code again:
 
 ```text
-$ cargo check
-   Compiling hello v0.1.0 (file:///projects/hello)
-warning: unused variable: `size`
- --> src/lib.rs:4:16
-  |
-4 |     pub fn new(size: usize) -> ThreadPool {
-  |                ^^^^
-  |
-  = note: #[warn(unused_variables)] on by default
-  = note: to avoid this warning, consider using `_size` instead
-
-error[E0599]: no method named `execute` found for type `hello::ThreadPool` in the current scope
-  --> src/bin/main.rs:18:14
-   |
-18 |         pool.execute(|| {
-   |              ^^^^^^^
+{{#include ../listings/ch20-web-server/no-listing-02-impl-threadpool-new/output.txt}}
 ```
 
-Now we get a warning and an error. Ignoring the warning for a moment, the error
-occurs because we don’t have an `execute` method on `ThreadPool`. Recall from
-the [“Creating a Similar Interface for a Finite Number of
+Now the error occurs because we don’t have an `execute` method on `ThreadPool`.
+Recall from the [“Creating a Similar Interface for a Finite Number of
 Threads”](#creating-a-similar-interface-for-a-finite-number-of-threads)<!--
 ignore --> section that we decided our thread pool should have an interface
 similar to `thread::spawn`. In addition, we’ll implement the `execute` function
@@ -350,17 +247,7 @@ the thread will take to execute. Let’s create an `execute` method on
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub struct ThreadPool;
-impl ThreadPool {
-    // --snip--
-
-    pub fn execute<F>(&self, f: F)
-        where
-            F: FnOnce() + Send + 'static
-    {
-
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/no-listing-03-define-execute/src/lib.rs:here}}
 ```
 
 We still use the `()` after `FnOnce` because this `FnOnce` represents a closure
@@ -372,30 +259,13 @@ Again, this is the simplest implementation of the `execute` method: it does
 nothing, but we’re trying only to make our code compile. Let’s check it again:
 
 ```text
-$ cargo check
-   Compiling hello v0.1.0 (file:///projects/hello)
-warning: unused variable: `size`
- --> src/lib.rs:4:16
-  |
-4 |     pub fn new(size: usize) -> ThreadPool {
-  |                ^^^^
-  |
-  = note: #[warn(unused_variables)] on by default
-  = note: to avoid this warning, consider using `_size` instead
-
-warning: unused variable: `f`
- --> src/lib.rs:8:30
-  |
-8 |     pub fn execute<F>(&self, f: F)
-  |                              ^
-  |
-  = note: to avoid this warning, consider using `_f` instead
+{{#include ../listings/ch20-web-server/no-listing-03-define-execute/output.txt}}
 ```
 
-We’re receiving only warnings now, which means it compiles! But note that if
-you try `cargo run` and make a request in the browser, you’ll see the errors in
-the browser that we saw at the beginning of the chapter. Our library isn’t
-actually calling the closure passed to `execute` yet!
+It compiles! But note that if you try `cargo run` and make a request in the
+browser, you’ll see the errors in the browser that we saw at the beginning of
+the chapter. Our library isn’t actually calling the closure passed to `execute`
+yet!
 
 > Note: A saying you might hear about languages with strict compilers, such as
 > Haskell and Rust, is “if the code compiles, it works.” But this saying is not
@@ -406,36 +276,19 @@ actually calling the closure passed to `execute` yet!
 
 #### Validating the Number of Threads in `new`
 
-We’ll continue to get warnings because we aren’t doing anything with the
-parameters to `new` and `execute`. Let’s implement the bodies of these
-functions with the behavior we want. To start, let’s think about `new`. Earlier
-we chose an unsigned type for the `size` parameter, because a pool with a
-negative number of threads makes no sense. However, a pool with zero threads
-also makes no sense, yet zero is a perfectly valid `usize`. We’ll add code to
-check that `size` is greater than zero before we return a `ThreadPool` instance
-and have the program panic if it receives a zero by using the `assert!` macro,
-as shown in Listing 20-13.
+We aren’t doing anything with the parameters to `new` and `execute`. Let’s
+implement the bodies of these functions with the behavior we want. To start,
+let’s think about `new`. Earlier we chose an unsigned type for the `size`
+parameter, because a pool with a negative number of threads makes no sense.
+However, a pool with zero threads also makes no sense, yet zero is a perfectly
+valid `usize`. We’ll add code to check that `size` is greater than zero before
+we return a `ThreadPool` instance and have the program panic if it receives a
+zero by using the `assert!` macro, as shown in Listing 20-13.
 
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# pub struct ThreadPool;
-impl ThreadPool {
-    /// Create a new ThreadPool.
-    ///
-    /// The size is the number of threads in the pool.
-    ///
-    /// # Panics
-    ///
-    /// The `new` function will panic if the size is zero.
-    pub fn new(size: usize) -> ThreadPool {
-        assert!(size > 0);
-
-        ThreadPool
-    }
-
-    // --snip--
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-13/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-13: Implementing `ThreadPool::new` to panic if
@@ -486,30 +339,7 @@ returned a `ThreadPool` instance containing them.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore,not_desired_behavior
-use std::thread;
-
-pub struct ThreadPool {
-    threads: Vec<thread::JoinHandle<()>>,
-}
-
-impl ThreadPool {
-    // --snip--
-    pub fn new(size: usize) -> ThreadPool {
-        assert!(size > 0);
-
-        let mut threads = Vec::with_capacity(size);
-
-        for _ in 0..size {
-            // create some threads and store them in the vector
-        }
-
-        ThreadPool {
-            threads
-        }
-    }
-
-    // --snip--
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-14/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-14: Creating a vector for `ThreadPool` to hold
@@ -575,45 +405,7 @@ Ready? Here is Listing 20-15 with one way to make the preceding modifications.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-use std::thread;
-
-pub struct ThreadPool {
-    workers: Vec<Worker>,
-}
-
-impl ThreadPool {
-    // --snip--
-    pub fn new(size: usize) -> ThreadPool {
-        assert!(size > 0);
-
-        let mut workers = Vec::with_capacity(size);
-
-        for id in 0..size {
-            workers.push(Worker::new(id));
-        }
-
-        ThreadPool {
-            workers
-        }
-    }
-    // --snip--
-}
-
-struct Worker {
-    id: usize,
-    thread: thread::JoinHandle<()>,
-}
-
-impl Worker {
-    fn new(id: usize) -> Worker {
-        let thread = thread::spawn(|| {});
-
-        Worker {
-            id,
-            thread,
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-15/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-15: Modifying `ThreadPool` to hold `Worker`
@@ -668,53 +460,7 @@ the channel.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# use std::thread;
-// --snip--
-use std::sync::mpsc;
-
-pub struct ThreadPool {
-    workers: Vec<Worker>,
-    sender: mpsc::Sender<Job>,
-}
-
-struct Job;
-
-impl ThreadPool {
-    // --snip--
-    pub fn new(size: usize) -> ThreadPool {
-        assert!(size > 0);
-
-        let (sender, receiver) = mpsc::channel();
-
-        let mut workers = Vec::with_capacity(size);
-
-        for id in 0..size {
-            workers.push(Worker::new(id));
-        }
-
-        ThreadPool {
-            workers,
-            sender,
-        }
-    }
-    // --snip--
-}
-#
-# struct Worker {
-#     id: usize,
-#     thread: thread::JoinHandle<()>,
-# }
-#
-# impl Worker {
-#     fn new(id: usize) -> Worker {
-#         let thread = thread::spawn(|| {});
-#
-#         Worker {
-#             id,
-#             thread,
-#         }
-#     }
-# }
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-16/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-16: Modifying `ThreadPool` to store the
@@ -731,41 +477,7 @@ the closure. The code in Listing 20-17 won’t quite compile yet.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore,does_not_compile
-impl ThreadPool {
-    // --snip--
-    pub fn new(size: usize) -> ThreadPool {
-        assert!(size > 0);
-
-        let (sender, receiver) = mpsc::channel();
-
-        let mut workers = Vec::with_capacity(size);
-
-        for id in 0..size {
-            workers.push(Worker::new(id, receiver));
-        }
-
-        ThreadPool {
-            workers,
-            sender,
-        }
-    }
-    // --snip--
-}
-
-// --snip--
-
-impl Worker {
-    fn new(id: usize, receiver: mpsc::Receiver<Job>) -> Worker {
-        let thread = thread::spawn(|| {
-            receiver;
-        });
-
-        Worker {
-            id,
-            thread,
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-17/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-17: Passing the receiving end of the channel
@@ -777,17 +489,7 @@ the channel into `Worker::new`, and then we use it inside the closure.
 When we try to check this code, we get this error:
 
 ```text
-$ cargo check
-   Compiling hello v0.1.0 (file:///projects/hello)
-error[E0382]: use of moved value: `receiver`
-  --> src/lib.rs:27:42
-   |
-27 |             workers.push(Worker::new(id, receiver));
-   |                                          ^^^^^^^^ value moved here in
-   previous iteration of loop
-   |
-   = note: move occurs because `receiver` has type
-   `std::sync::mpsc::Receiver<Job>`, which does not implement the `Copy` trait
+{{#include ../listings/ch20-web-server/listing-20-17/output.txt}}
 ```
 
 The code is trying to pass `receiver` to multiple `Worker` instances. This
@@ -810,60 +512,7 @@ receiver at a time. Listing 20-18 shows the changes we need to make.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# use std::thread;
-# use std::sync::mpsc;
-use std::sync::Arc;
-use std::sync::Mutex;
-// --snip--
-
-# pub struct ThreadPool {
-#     workers: Vec<Worker>,
-#     sender: mpsc::Sender<Job>,
-# }
-# struct Job;
-#
-impl ThreadPool {
-    // --snip--
-    pub fn new(size: usize) -> ThreadPool {
-        assert!(size > 0);
-
-        let (sender, receiver) = mpsc::channel();
-
-        let receiver = Arc::new(Mutex::new(receiver));
-
-        let mut workers = Vec::with_capacity(size);
-
-        for id in 0..size {
-            workers.push(Worker::new(id, Arc::clone(&receiver)));
-        }
-
-        ThreadPool {
-            workers,
-            sender,
-        }
-    }
-
-    // --snip--
-}
-
-# struct Worker {
-#     id: usize,
-#     thread: thread::JoinHandle<()>,
-# }
-#
-impl Worker {
-    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
-        // --snip--
-#         let thread = thread::spawn(|| {
-#            receiver;
-#         });
-#
-#         Worker {
-#             id,
-#             thread,
-#         }
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-18/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-18: Sharing the receiving end of the channel
@@ -887,30 +536,7 @@ at Listing 20-19.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-// --snip--
-# pub struct ThreadPool {
-#     workers: Vec<Worker>,
-#     sender: mpsc::Sender<Job>,
-# }
-# use std::sync::mpsc;
-# struct Worker {}
-
-type Job = Box<dyn FnOnce() + Send + 'static>;
-
-impl ThreadPool {
-    // --snip--
-
-    pub fn execute<F>(&self, f: F)
-        where
-            F: FnOnce() + Send + 'static
-    {
-        let job = Box::new(f);
-
-        self.sender.send(job).unwrap();
-    }
-}
-
-// --snip--
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-19/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-19: Creating a `Job` type alias for a `Box`
@@ -933,27 +559,8 @@ shown in Listing 20-20 to `Worker::new`.
 
 <span class="filename">Filename: src/lib.rs</span>
 
-```rust,ignore,does_not_compile
-// --snip--
-
-impl Worker {
-    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
-        let thread = thread::spawn(move || {
-            loop {
-                let job = receiver.lock().unwrap().recv().unwrap();
-
-                println!("Worker {} got a job; executing.", id);
-
-                job();
-            }
-        });
-
-        Worker {
-            id,
-            thread,
-        }
-    }
-}
+```rust
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-20/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-20: Receiving and executing the jobs in the
@@ -976,10 +583,16 @@ The call to `recv` blocks, so if there is no job yet, the current thread will
 wait until a job becomes available. The `Mutex<T>` ensures that only one
 `Worker` thread at a time is trying to request a job.
 
-
 With the implementation of this trick, our thread pool is in a working state!
 Give it a `cargo run` and make some requests:
 
+<!-- manual-regeneration
+cd listings/ch20-web-server/listing-20-20
+cargo run
+make some requests to 127.0.0.1:7878
+Can't automate because the output depends on making requests
+-->
+
 ```text
 $ cargo run
    Compiling hello v0.1.0 (file:///projects/hello)
@@ -1007,7 +620,7 @@ warning: field is never used: `thread`
    |
    = note: #[warn(dead_code)] on by default
 
-    Finished dev [unoptimized + debuginfo] target(s) in 0.99 secs
+    Finished dev [unoptimized + debuginfo] target(s) in 0.99s
      Running `target/debug/hello`
 Worker 0 got a job; executing.
 Worker 2 got a job; executing.
@@ -1038,24 +651,7 @@ why we didn’t write the worker thread code as shown in Listing 20-21.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore,not_desired_behavior
-// --snip--
-
-impl Worker {
-    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
-        let thread = thread::spawn(move || {
-            while let Ok(job) = receiver.lock().unwrap().recv() {
-                println!("Worker {} got a job; executing.", id);
-
-                job();
-            }
-        });
-
-        Worker {
-            id,
-            thread,
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-21/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-21: An alternative implementation of
diff --git a/src/ch20-03-graceful-shutdown-and-cleanup.md b/src/ch20-03-graceful-shutdown-and-cleanup.md
index 174378b9..fe80857d 100644
--- a/src/ch20-03-graceful-shutdown-and-cleanup.md
+++ b/src/ch20-03-graceful-shutdown-and-cleanup.md
@@ -24,15 +24,7 @@ quite work yet.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore,does_not_compile
-impl Drop for ThreadPool {
-    fn drop(&mut self) {
-        for worker in &mut self.workers {
-            println!("Shutting down worker {}", worker.id);
-
-            worker.thread.join().unwrap();
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-22/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-22: Joining each thread when the thread pool
@@ -48,11 +40,7 @@ into an ungraceful shutdown.
 Here is the error we get when we compile this code:
 
 ```text
-error[E0507]: cannot move out of borrowed content
-  --> src/lib.rs:65:13
-   |
-65 |             worker.thread.join().unwrap();
-   |             ^^^^^^ cannot move out of borrowed content
+{{#include ../listings/ch20-web-server/listing-20-22/output.txt}}
 ```
 
 The error tells us we can’t call `join` because we only have a mutable borrow
@@ -70,37 +58,15 @@ So we know we want to update the definition of `Worker` like this:
 
 <span class="filename">Filename: src/lib.rs</span>
 
-```rust
-# use std::thread;
-struct Worker {
-    id: usize,
-    thread: Option<thread::JoinHandle<()>>,
-}
+```rust,ignore,does_not_compile
+{{#rustdoc_include ../listings/ch20-web-server/no-listing-04-update-worker-definition/src/lib.rs:here}}
 ```
 
 Now let’s lean on the compiler to find the other places that need to change.
 Checking this code, we get two errors:
 
 ```text
-error[E0599]: no method named `join` found for type
-`std::option::Option<std::thread::JoinHandle<()>>` in the current scope
-  --> src/lib.rs:65:27
-   |
-65 |             worker.thread.join().unwrap();
-   |                           ^^^^
-
-error[E0308]: mismatched types
-  --> src/lib.rs:89:13
-   |
-89 |             thread,
-   |             ^^^^^^
-   |             |
-   |             expected enum `std::option::Option`, found struct
-   `std::thread::JoinHandle`
-   |             help: try using a variant of the expected type: `Some(thread)`
-   |
-   = note: expected type `std::option::Option<std::thread::JoinHandle<()>>`
-              found type `std::thread::JoinHandle<_>`
+{{#include ../listings/ch20-web-server/no-listing-04-update-worker-definition/output.txt}}
 ```
 
 Let’s address the second error, which points to the code at the end of
@@ -110,16 +76,7 @@ new `Worker`. Make the following changes to fix this error:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-impl Worker {
-    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
-        // --snip--
-
-        Worker {
-            id,
-            thread: Some(thread),
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/no-listing-05-fix-worker-new/src/lib.rs:here}}
 ```
 
 The first error is in our `Drop` implementation. We mentioned earlier that we
@@ -129,17 +86,7 @@ The following changes will do so:
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-impl Drop for ThreadPool {
-    fn drop(&mut self) {
-        for worker in &mut self.workers {
-            println!("Shutting down worker {}", worker.id);
-
-            if let Some(thread) = worker.thread.take() {
-                thread.join().unwrap();
-            }
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/no-listing-06-fix-threadpool-drop/src/lib.rs:here}}
 ```
 
 As discussed in Chapter 17, the `take` method on `Option` takes the `Some`
@@ -166,11 +113,7 @@ variants.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-# struct Job;
-enum Message {
-    NewJob(Job),
-    Terminate,
-}
+{{#rustdoc_include ../listings/ch20-web-server/no-listing-07-define-message-enum/src/lib.rs:here}}
 ```
 
 This `Message` enum will either be a `NewJob` variant that holds the `Job` the
@@ -183,57 +126,7 @@ We need to adjust the channel to use values of type `Message` rather than type
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-pub struct ThreadPool {
-    workers: Vec<Worker>,
-    sender: mpsc::Sender<Message>,
-}
-
-// --snip--
-
-impl ThreadPool {
-    // --snip--
-
-    pub fn execute<F>(&self, f: F)
-        where
-            F: FnOnce() + Send + 'static
-    {
-        let job = Box::new(f);
-
-        self.sender.send(Message::NewJob(job)).unwrap();
-    }
-}
-
-// --snip--
-
-impl Worker {
-    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Message>>>) ->
-        Worker {
-
-        let thread = thread::spawn(move ||{
-            loop {
-                let message = receiver.lock().unwrap().recv().unwrap();
-
-                match message {
-                    Message::NewJob(job) => {
-                        println!("Worker {} got a job; executing.", id);
-
-                        job();
-                    },
-                    Message::Terminate => {
-                        println!("Worker {} was told to terminate.", id);
-
-                        break;
-                    },
-                }
-            }
-        });
-
-        Worker {
-            id,
-            thread: Some(thread),
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-23/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-23: Sending and receiving `Message` values and
@@ -255,25 +148,7 @@ changing our `Drop` implementation to look like Listing 20-24.
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust,ignore
-impl Drop for ThreadPool {
-    fn drop(&mut self) {
-        println!("Sending terminate message to all workers.");
-
-        for _ in &mut self.workers {
-            self.sender.send(Message::Terminate).unwrap();
-        }
-
-        println!("Shutting down all workers.");
-
-        for worker in &mut self.workers {
-            println!("Shutting down worker {}", worker.id);
-
-            if let Some(thread) = worker.thread.take() {
-                thread.join().unwrap();
-            }
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-24/src/lib.rs:here}}
 ```
 
 <span class="caption">Listing 20-24: Sending `Message::Terminate` to the
@@ -307,20 +182,7 @@ before gracefully shutting down the server, as shown in Listing 20-25.
 <span class="filename">Filename: src/bin/main.rs</span>
 
 ```rust,ignore
-fn main() {
-    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
-    let pool = ThreadPool::new(4);
-
-    for stream in listener.incoming().take(2) {
-        let stream = stream.unwrap();
-
-        pool.execute(|| {
-            handle_connection(stream);
-        });
-    }
-
-    println!("Shutting down.");
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-25/src/bin/main.rs:here}}
 ```
 
 <span class="caption">Listing 20-25: Shut down the server after serving two
@@ -337,11 +199,19 @@ end of `main`, and the `drop` implementation will run.
 Start the server with `cargo run`, and make three requests. The third request
 should error, and in your terminal you should see output similar to this:
 
+<!-- manual-regeneration
+cd listings/ch20-web-server/listing-20-25
+cargo run
+make 2 requests to 127.0.0.1:7878
+third request will error because server will have shut down
+Can't automate because the output depends on making requests
+-->
+
 ```text
 $ cargo run
    Compiling hello v0.1.0 (file:///projects/hello)
-    Finished dev [unoptimized + debuginfo] target(s) in 1.0 secs
-     Running `target/debug/hello`
+    Finished dev [unoptimized + debuginfo] target(s) in 1.0s
+     Running `target/debug/main`
 Worker 0 got a job; executing.
 Worker 3 got a job; executing.
 Shutting down.
@@ -383,166 +253,13 @@ Here’s the full code for reference:
 <span class="filename">Filename: src/bin/main.rs</span>
 
 ```rust,ignore
-use hello::ThreadPool;
-
-use std::io::prelude::*;
-use std::net::TcpListener;
-use std::net::TcpStream;
-use std::fs;
-use std::thread;
-use std::time::Duration;
-
-fn main() {
-    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
-    let pool = ThreadPool::new(4);
-
-    for stream in listener.incoming().take(2) {
-        let stream = stream.unwrap();
-
-        pool.execute(|| {
-            handle_connection(stream);
-        });
-    }
-
-    println!("Shutting down.");
-}
-
-fn handle_connection(mut stream: TcpStream) {
-    let mut buffer = [0; 512];
-    stream.read(&mut buffer).unwrap();
-
-    let get = b"GET / HTTP/1.1\r\n";
-    let sleep = b"GET /sleep HTTP/1.1\r\n";
-
-    let (status_line, filename) = if buffer.starts_with(get) {
-        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
-    } else if buffer.starts_with(sleep) {
-        thread::sleep(Duration::from_secs(5));
-        ("HTTP/1.1 200 OK\r\n\r\n", "hello.html")
-    } else {
-        ("HTTP/1.1 404 NOT FOUND\r\n\r\n", "404.html")
-    };
-
-    let contents = fs::read_to_string(filename).unwrap();
-
-    let response = format!("{}{}", status_line, contents);
-
-    stream.write(response.as_bytes()).unwrap();
-    stream.flush().unwrap();
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-25/src/bin/main.rs:all}}
 ```
 
 <span class="filename">Filename: src/lib.rs</span>
 
 ```rust
-use std::thread;
-use std::sync::mpsc;
-use std::sync::Arc;
-use std::sync::Mutex;
-
-enum Message {
-    NewJob(Job),
-    Terminate,
-}
-
-pub struct ThreadPool {
-    workers: Vec<Worker>,
-    sender: mpsc::Sender<Message>,
-}
-
-type Job = Box<dyn FnOnce() + Send + 'static>;
-
-impl ThreadPool {
-    /// Create a new ThreadPool.
-    ///
-    /// The size is the number of threads in the pool.
-    ///
-    /// # Panics
-    ///
-    /// The `new` function will panic if the size is zero.
-    pub fn new(size: usize) -> ThreadPool {
-        assert!(size > 0);
-
-        let (sender, receiver) = mpsc::channel();
-
-        let receiver = Arc::new(Mutex::new(receiver));
-
-        let mut workers = Vec::with_capacity(size);
-
-        for id in 0..size {
-            workers.push(Worker::new(id, Arc::clone(&receiver)));
-        }
-
-        ThreadPool {
-            workers,
-            sender,
-        }
-    }
-
-    pub fn execute<F>(&self, f: F)
-        where
-            F: FnOnce() + Send + 'static
-    {
-        let job = Box::new(f);
-
-        self.sender.send(Message::NewJob(job)).unwrap();
-    }
-}
-
-impl Drop for ThreadPool {
-    fn drop(&mut self) {
-        println!("Sending terminate message to all workers.");
-
-        for _ in &mut self.workers {
-            self.sender.send(Message::Terminate).unwrap();
-        }
-
-        println!("Shutting down all workers.");
-
-        for worker in &mut self.workers {
-            println!("Shutting down worker {}", worker.id);
-
-            if let Some(thread) = worker.thread.take() {
-                thread.join().unwrap();
-            }
-        }
-    }
-}
-
-struct Worker {
-    id: usize,
-    thread: Option<thread::JoinHandle<()>>,
-}
-
-impl Worker {
-    fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Message>>>) ->
-        Worker {
-
-        let thread = thread::spawn(move ||{
-            loop {
-                let message = receiver.lock().unwrap().recv().unwrap();
-
-                match message {
-                    Message::NewJob(job) => {
-                        println!("Worker {} got a job; executing.", id);
-
-                        job();
-                    },
-                    Message::Terminate => {
-                        println!("Worker {} was told to terminate.", id);
-
-                        break;
-                    },
-                }
-            }
-        });
-
-        Worker {
-            id,
-            thread: Some(thread),
-        }
-    }
-}
+{{#rustdoc_include ../listings/ch20-web-server/listing-20-25/src/lib.rs:here}}
 ```
 
 We could do more here! If you want to continue enhancing this project, here are