also forward Iterator::size_hint()

rust-lang · Jan 20, 2015 · 00cddb0 · 00cddb0
1 parent 74e111c
commit 00cddb0
Show file tree

Hide file tree

Showing 2 changed files with 8 additions and 0 deletions.
diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs
@@ -194,6 +194,10 @@ impl<'a, T> Iterator for Box<Iterator<Item=T> + 'a> {
     fn next(&mut self) -> Option<T> {
         (**self).next()
     }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        (**self).size_hint()
+    }
 }
 
 #[cfg(test)]

diff --git a/src/libcore/iter.rs b/src/libcore/iter.rs
@@ -107,6 +107,10 @@ impl<'a, T> Iterator for &'a mut (Iterator<Item=T> + 'a) {
     fn next(&mut self) -> Option<T> {
         (**self).next()
     }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        (**self).size_hint()
+    }
 }
 
 /// Conversion from an `Iterator`