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rustlings/solutions/18_iterators/iterators1.rs

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2024-06-27 20:07:56 -04:00
// 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
}
}