From 4dfc11d74ab02ac5765ae5d08fb750c91f4744b4 Mon Sep 17 00:00:00 2001
From: Hunter Kvalevog <hunter@kvog.sh>
Date: Fri, 2 Oct 2026 21:53:51 -0500
Subject: rustlings: move to rust/

---
 rustlings/solutions/18_iterators/iterators5.rs | 168 -------------------------
 1 file changed, 168 deletions(-)
 delete mode 100644 rustlings/solutions/18_iterators/iterators5.rs

(limited to 'rustlings/solutions/18_iterators/iterators5.rs')

diff --git a/rustlings/solutions/18_iterators/iterators5.rs b/rustlings/solutions/18_iterators/iterators5.rs
deleted file mode 100644
index 067a117..0000000
--- a/rustlings/solutions/18_iterators/iterators5.rs
+++ /dev/null
@@ -1,168 +0,0 @@
-// Let's define a simple model to track Rustlings' exercise progress. Progress
-// will be modelled using a hash map. The name of the exercise is the key and
-// the progress is the value. Two counting functions were created to count the
-// number of exercises with a given progress. Recreate this counting
-// functionality using iterators. Try to not use imperative loops (for/while).
-
-use std::collections::HashMap;
-
-#[derive(Clone, Copy, PartialEq, Eq)]
-enum Progress {
-    None,
-    Some,
-    Complete,
-}
-
-fn count_for(map: &HashMap<String, Progress>, value: Progress) -> usize {
-    let mut count = 0;
-    for val in map.values() {
-        if *val == value {
-            count += 1;
-        }
-    }
-    count
-}
-
-fn count_iterator(map: &HashMap<String, Progress>, value: Progress) -> usize {
-    // `map` is a hash map with `String` keys and `Progress` values.
-    // map = { "variables1": Complete, "from_str": None, … }
-    map.values().filter(|val| **val == value).count()
-}
-
-fn count_collection_for(collection: &[HashMap<String, Progress>], value: Progress) -> usize {
-    let mut count = 0;
-    for map in collection {
-        count += count_for(map, value);
-    }
-    count
-}
-
-fn count_collection_iterator(collection: &[HashMap<String, Progress>], value: Progress) -> usize {
-    // `collection` is a slice of hash maps.
-    // collection = [{ "variables1": Complete, "from_str": None, … },
-    //               { "variables2": Complete, … }, … ]
-    collection
-        .iter()
-        .map(|map| count_iterator(map, value))
-        .sum()
-}
-
-// Equivalent to `count_collection_iterator` and `count_iterator`, iterating as
-// if the collection was a single container instead of a container of containers
-// (and more accurately, a single iterator instead of an iterator of iterators).
-fn count_collection_iterator_flat(
-    collection: &[HashMap<String, Progress>],
-    value: Progress,
-) -> usize {
-    // `collection` is a slice of hash maps.
-    // collection = [{ "variables1": Complete, "from_str": None, … },
-    //               { "variables2": Complete, … }, … ]
-    collection
-        .iter()
-        .flat_map(HashMap::values) // or just `.flatten()` when wanting the default iterator (`HashMap::iter`)
-        .filter(|val| **val == value)
-        .count()
-}
-
-fn main() {
-    // You can optionally experiment here.
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use Progress::*;
-
-    fn get_map() -> HashMap<String, Progress> {
-        let mut map = HashMap::new();
-        map.insert(String::from("variables1"), Complete);
-        map.insert(String::from("functions1"), Complete);
-        map.insert(String::from("hashmap1"), Complete);
-        map.insert(String::from("arc1"), Some);
-        map.insert(String::from("as_ref_mut"), None);
-        map.insert(String::from("from_str"), None);
-
-        map
-    }
-
-    fn get_vec_map() -> Vec<HashMap<String, Progress>> {
-        let map = get_map();
-
-        let mut other = HashMap::new();
-        other.insert(String::from("variables2"), Complete);
-        other.insert(String::from("functions2"), Complete);
-        other.insert(String::from("if1"), Complete);
-        other.insert(String::from("from_into"), None);
-        other.insert(String::from("try_from_into"), None);
-
-        vec![map, other]
-    }
-
-    #[test]
-    fn count_complete() {
-        let map = get_map();
-        assert_eq!(count_iterator(&map, Complete), 3);
-    }
-
-    #[test]
-    fn count_some() {
-        let map = get_map();
-        assert_eq!(count_iterator(&map, Some), 1);
-    }
-
-    #[test]
-    fn count_none() {
-        let map = get_map();
-        assert_eq!(count_iterator(&map, None), 2);
-    }
-
-    #[test]
-    fn count_complete_equals_for() {
-        let map = get_map();
-        let progress_states = [Complete, Some, None];
-        for progress_state in progress_states {
-            assert_eq!(
-                count_for(&map, progress_state),
-                count_iterator(&map, progress_state),
-            );
-        }
-    }
-
-    #[test]
-    fn count_collection_complete() {
-        let collection = get_vec_map();
-        assert_eq!(count_collection_iterator(&collection, Complete), 6);
-        assert_eq!(count_collection_iterator_flat(&collection, Complete), 6);
-    }
-
-    #[test]
-    fn count_collection_some() {
-        let collection = get_vec_map();
-        assert_eq!(count_collection_iterator(&collection, Some), 1);
-        assert_eq!(count_collection_iterator_flat(&collection, Some), 1);
-    }
-
-    #[test]
-    fn count_collection_none() {
-        let collection = get_vec_map();
-        assert_eq!(count_collection_iterator(&collection, None), 4);
-        assert_eq!(count_collection_iterator_flat(&collection, None), 4);
-    }
-
-    #[test]
-    fn count_collection_equals_for() {
-        let collection = get_vec_map();
-        let progress_states = [Complete, Some, None];
-
-        for progress_state in progress_states {
-            assert_eq!(
-                count_collection_for(&collection, progress_state),
-                count_collection_iterator(&collection, progress_state),
-            );
-            assert_eq!(
-                count_collection_for(&collection, progress_state),
-                count_collection_iterator_flat(&collection, progress_state),
-            );
-        }
-    }
-}
-- 
cgit v1.2.3