comprehensive-rust/src/control-flow-basics/loops/for.md

# `for`

The [`for` loop](https://doc.rust-lang.org/std/keyword.for.html) iterates over
ranges of values or the items in a collection:

```rust,editable
fn main() {
    for x in 1..5 {
        println!("x: {x}");
    }

    for elem in [1, 2, 3, 4, 5] {
        println!("elem: {elem}");
    }
}
```

<details>

- Under the hood `for` loops use a concept called "iterators" to handle
  iterating over different kinds of ranges/collections. Iterators will be
  discussed in more detail later.
- Note that the first `for` loop only iterates to `4`. Show the `1..=5` syntax
  for an inclusive range.

</details>