mirror of
https://github.com/notohh/rustlings.git
synced 2024-12-24 03:58:08 -05:00
26 lines
1,011 B
Rust
26 lines
1,011 B
Rust
// When performing operations on elements within a collection, iterators are
|
|
// essential. This module helps you get familiar with the structure of using an
|
|
// iterator and how to go through elements within an iterable collection.
|
|
|
|
fn main() {
|
|
// You can optionally experiment here.
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
#[test]
|
|
fn iterators() {
|
|
let my_fav_fruits = ["banana", "custard apple", "avocado", "peach", "raspberry"];
|
|
|
|
// Create an iterator over the array.
|
|
let mut fav_fruits_iterator = my_fav_fruits.iter();
|
|
|
|
assert_eq!(fav_fruits_iterator.next(), Some(&"banana"));
|
|
assert_eq!(fav_fruits_iterator.next(), Some(&"custard apple"));
|
|
assert_eq!(fav_fruits_iterator.next(), Some(&"avocado"));
|
|
assert_eq!(fav_fruits_iterator.next(), Some(&"peach"));
|
|
assert_eq!(fav_fruits_iterator.next(), Some(&"raspberry"));
|
|
assert_eq!(fav_fruits_iterator.next(), None);
|
|
// ^^^^ reached the end
|
|
}
|
|
}
|