From 765bc9064f9b38ae227a2c61a8ed34f67f0afd0f Mon Sep 17 00:00:00 2001
From: Palmer Cox <p@lmercox.com>
Date: Wed, 11 Dec 2013 21:37:45 -0500
Subject: [PATCH] Implement size_hint() for ByRef iterator

---
 src/libstd/iter.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/libstd/iter.rs b/src/libstd/iter.rs
index 5fbb09eadcb09..f16e9b5392977 100644
--- a/src/libstd/iter.rs
+++ b/src/libstd/iter.rs
@@ -795,7 +795,8 @@ pub struct ByRef<'a, T> {
 impl<'a, A, T: Iterator<A>> Iterator<A> for ByRef<'a, T> {
     #[inline]
     fn next(&mut self) -> Option<A> { self.iter.next() }
-    // FIXME: #9629 we cannot implement &self methods like size_hint on ByRef
+    #[inline]
+    fn size_hint(&self) -> (uint, Option<uint>) { self.iter.size_hint() }
 }
 
 impl<'a, A, T: DoubleEndedIterator<A>> DoubleEndedIterator<A> for ByRef<'a, T> {