From b36ed7d2edf68453c0344eb3cd55281e48c96ecb Mon Sep 17 00:00:00 2001
From: Johannes Oertel <johannes.oertel@uni-due.de>
Date: Wed, 3 Jun 2015 12:38:42 +0200
Subject: Implement RFC 839

Closes #25976.
---
 src/libcollections/vec_deque.rs | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/libcollections/vec_deque.rs')

diff --git a/src/libcollections/vec_deque.rs b/src/libcollections/vec_deque.rs
index 0bc42bd2c7e..88d0a96b78c 100644
--- a/src/libcollections/vec_deque.rs
+++ b/src/libcollections/vec_deque.rs
@@ -1785,6 +1785,13 @@ impl<A> Extend<A> for VecDeque<A> {
     }
 }
 
+#[stable(feature = "extend_ref", since = "1.2.0")]
+impl<'a, T: 'a + Copy> Extend<&'a T> for VecDeque<T> {
+    fn extend<I: IntoIterator<Item=&'a T>>(&mut self, iter: I) {
+        self.extend(iter.into_iter().cloned());
+    }
+}
+
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<T: fmt::Debug> fmt::Debug for VecDeque<T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-- 
cgit 1.4.1-3-g733a5