From 25d8a9ebbfaa74068fbed79151fadaaf38955be0 Mon Sep 17 00:00:00 2001
From: JustForFun88 <100504524+JustForFun88@users.noreply.github.com>
Date: Mon, 4 Apr 2022 23:42:09 +0500
Subject: [PATCH] Improve iter_mut example. Add that it is fused iterator

---
 src/map.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/map.rs b/src/map.rs
index b5455c1..56d9e0e 100644
--- a/src/map.rs
+++ b/src/map.rs
@@ -1650,6 +1650,10 @@ impl<K1, K2, V> FusedIterator for Iter<'_, K1, K2, V> {}
 /// iter.next().map(|(_, _, v)| v.push_str(" coin"));
 /// iter.next().map(|(_, _, v)| v.push_str(" coin"));
 ///
+/// // It is fused iterator
+/// assert_eq!(iter.next(), None);
+/// assert_eq!(iter.next(), None);
+///
 /// assert_eq!(map.get_key1(&1).unwrap(), &"One coin".to_owned()  );
 /// assert_eq!(map.get_key1(&2).unwrap(), &"Two coin".to_owned()  );
 /// assert_eq!(map.get_key1(&3).unwrap(), &"Three coin".to_owned());