mirror of https://github.com/rust-lang/book
31 lines
780 B
Markdown
31 lines
780 B
Markdown
% Loops
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<small>There is a new edition of the book and this is an old link.</small>
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> Rust has three kinds of loops: `loop`, `while`, and `for`.
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> The `loop` keyword tells Rust to execute a block of code over and over again forever or until you explicitly tell it to stop.
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> `while` loops evaluate a block of code until a condition ceases to be true.
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> A `for` loop executes some code for each item in a collection.
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```rust,no_run
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loop {
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println!("again!");
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}
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let mut number = 3;
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while number != 0 {
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println!("{number}!");
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number = number - 1;
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}
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let a = [10, 20, 30, 40, 50];
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for element in a.iter() {
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println!("the value is: {element}");
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}
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```
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---
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You can find the latest version of this information
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[here](ch03-05-control-flow.html#repetition-with-loops).
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