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26 lines
1.0 KiB
Rust
26 lines
1.0 KiB
Rust
// When performing operations on elements within a collection, iterators are
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// essential. This module helps you get familiar with the structure of using an
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// iterator and how to go through elements within an iterable collection.
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fn main() {
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// You can optionally experiment here.
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}
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#[cfg(test)]
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mod tests {
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#[test]
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fn iterators() {
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let my_fav_fruits = ["banana", "custard apple", "avocado", "peach", "raspberry"];
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// TODO: Create an iterator over the array.
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let mut fav_fruits_iterator =my_fav_fruits.iter();
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assert_eq!(fav_fruits_iterator.next(), Some(&"banana"));
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assert_eq!(fav_fruits_iterator.next(), Some(&"custard apple")); // TODO: Replace `todo!()`
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assert_eq!(fav_fruits_iterator.next(), Some(&"avocado"));
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assert_eq!(fav_fruits_iterator.next(), Some(&"peach")); // TODO: Replace `todo!()`
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assert_eq!(fav_fruits_iterator.next(), Some(&"raspberry"));
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assert_eq!(fav_fruits_iterator.next(), None); // TODO: Replace `todo!()`
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}
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}
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