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% Iterators
<small>There is a new edition of the book and this is an old link.</small>
> The iterator pattern allows you to perform some task on a sequence of items in turn.
> An iterator is responsible for the logic of iterating over each item and determining when the sequence has finished.
```rust
let v1 = vec![1, 2, 3];
let v1_iter = v1.iter();
for val in v1_iter {
println!("Got: {}", val);
}
```
---
Here are the relevant sections in the new and old books:
* **[in the current edition: Ch 13.02 — Iterators][2]**
* <small>[In the first edition: Ch 4.5 — Iterators][1]</small>
[1]: https://doc.rust-lang.org/1.30.0/book/first-edition/iterators.html
[2]: ch13-02-iterators.html
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