From 43bec832667252ea2e78abe17918ba5fbbc1e27d Mon Sep 17 00:00:00 2001
From: Ezra Shaw <ezrasure@outlook.com>
Date: Sat, 7 Jan 2023 17:08:04 +1300
Subject: [PATCH] docs: make `HashSet::retain` doctest more clear

---
 library/std/src/collections/hash/set.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/std/src/collections/hash/set.rs b/library/std/src/collections/hash/set.rs
index cee884145c711..b59f89d321c47 100644
--- a/library/std/src/collections/hash/set.rs
+++ b/library/std/src/collections/hash/set.rs
@@ -317,7 +317,7 @@ impl<T, S> HashSet<T, S> {
     ///
     /// let mut set = HashSet::from([1, 2, 3, 4, 5, 6]);
     /// set.retain(|&k| k % 2 == 0);
-    /// assert_eq!(set.len(), 3);
+    /// assert_eq!(set, HashSet::from([2, 4, 6]));
     /// ```
     ///
     /// # Performance