borrow-splitting: Use take instead of replace (#391)

rust-lang · Jan 5, 2023 · 03fa5be · 03fa5be
1 parent 8ca2612
commit 03fa5be
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/borrow-splitting.md b/src/borrow-splitting.md
@@ -159,7 +159,7 @@ impl<'a, T> Iterator for IterMut<'a, T> {
     type Item = &'a mut T;
 
     fn next(&mut self) -> Option<Self::Item> {
-        let slice = mem::replace(&mut self.0, &mut []);
+        let slice = mem::take(&mut self.0);
         if slice.is_empty() { return None; }
 
         let (l, r) = slice.split_at_mut(1);
@@ -170,7 +170,7 @@ impl<'a, T> Iterator for IterMut<'a, T> {
 
 impl<'a, T> DoubleEndedIterator for IterMut<'a, T> {
     fn next_back(&mut self) -> Option<Self::Item> {
-        let slice = mem::replace(&mut self.0, &mut []);
+        let slice = mem::take(&mut self.0);
         if slice.is_empty() { return None; }
 
         let new_len = slice.len() - 1;