From 30c61eece4ce212e8b0b6c384b3abc9d24201d26 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20M=2E=20Bezerra?= <marcospb19@hotmail.com>
Date: Mon, 26 Jun 2023 13:33:53 -0300
Subject: [PATCH] std: edit [T]::swap docs

Add a note telling that no elements change when arguments are equal
---
 library/core/src/slice/mod.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs
index 5d6e7dcfcee87..e2a2428fbc244 100644
--- a/library/core/src/slice/mod.rs
+++ b/library/core/src/slice/mod.rs
@@ -851,6 +851,8 @@ impl<T> [T] {
 
     /// Swaps two elements in the slice.
     ///
+    /// If `a` equals to `b`, it's guaranteed that elements won't change value.
+    ///
     /// # Arguments
     ///
     /// * a - The index of the first element