From d53469c1d350fd47edc08c0419f5a4e58453d110 Mon Sep 17 00:00:00 2001
From: Jim Blandy <jimb@red-bean.com>
Date: Mon, 3 May 2021 12:01:16 -0700
Subject: [PATCH] Clarify documentation for `[T]::contains`. Fixes #84877.

---
 library/core/src/slice/mod.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs
index ec28cdd1ba0d9..0923175414edd 100644
--- a/library/core/src/slice/mod.rs
+++ b/library/core/src/slice/mod.rs
@@ -1948,8 +1948,9 @@ impl<T> [T] {
     /// assert!(!v.contains(&50));
     /// ```
     ///
-    /// If you do not have an `&T`, but just an `&U` such that `T: Borrow<U>`
-    /// (e.g. `String: Borrow<str>`), you can use `iter().any`:
+    /// If you do not have a `&T`, but some other value that you can compare
+    /// with one (for example, `String` implements `PartialEq<str>`), you can
+    /// use `iter().any`:
     ///
     /// ```
     /// let v = [String::from("hello"), String::from("world")]; // slice of `String`