From 67fb6c0eb507965836201551f90c7d637bf6cee0 Mon Sep 17 00:00:00 2001 From: Hunter Kvalevog Date: Sun, 27 Sep 2026 17:28:34 -0500 Subject: rustlings: complete 18 --- rustlings/exercises/18_iterators/iterators5.rs | 2 ++ 1 file changed, 2 insertions(+) (limited to 'rustlings/exercises/18_iterators/iterators5.rs') diff --git a/rustlings/exercises/18_iterators/iterators5.rs b/rustlings/exercises/18_iterators/iterators5.rs index 7e434cc..74f1c74 100644 --- a/rustlings/exercises/18_iterators/iterators5.rs +++ b/rustlings/exercises/18_iterators/iterators5.rs @@ -26,6 +26,7 @@ fn count_for(map: &HashMap, value: Progress) -> usize { // TODO: Implement the functionality of `count_for` but with an iterator instead // of a `for` loop. fn count_iterator(map: &HashMap, value: Progress) -> usize { + map.values().filter(|&&x| x == value).count() // `map` is a hash map with `String` keys and `Progress` values. // map = { "variables1": Complete, "from_str": None, … } } @@ -45,6 +46,7 @@ fn count_collection_for(collection: &[HashMap], value: Progres // TODO: Implement the functionality of `count_collection_for` but with an // iterator instead of a `for` loop. fn count_collection_iterator(collection: &[HashMap], value: Progress) -> usize { + collection.iter().map(|m| count_iterator(m, value)).sum() // `collection` is a slice of hash maps. // collection = [{ "variables1": Complete, "from_str": None, … }, // { "variables2": Complete, … }, … ] -- cgit v1.2.3