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Ch. 18: further clarify about irrefutable patterns

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Chris Krycho 2024-04-18 13:55:40 -06:00
parent 976b2d812d
commit 0b869eecc8
1 changed files with 4 additions and 4 deletions
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src/ch18-02-refutability.md
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@ -60,10 +60,10 @@ the code in the curly brackets, giving it a way to continue validly. Listing
<span class="caption">Listing 18-9: Using `if let` and a block with refutable <span class="caption">Listing 18-9: Using `if let` and a block with refutable
patterns instead of `let`</span> patterns instead of `let`</span>
We’ve given the code an out! This code is perfectly valid, although it means we We’ve given the code an out! This code is perfectly valid now. However,
cannot use an irrefutable pattern without receiving a warning. If we give `if if we give `if let` an irrefutable pattern (a pattern that will always
let` a pattern that will always match, such as `x`, as shown in Listing 18-10, match), such as `x`, as shown in Listing 18-10, the compiler will give a
the compiler will give a warning. warning.
```rust ```rust
{{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-10/src/main.rs:here}} {{#rustdoc_include ../listings/ch18-patterns-and-matching/listing-18-10/src/main.rs:here}}