implement ExactSizeIterator for linked_list::IntoIter

apasel422 · apasel422 · commit 7934d524b51c · 2015-03-23T08:51:13.000-04:00
diff --git a/src/libcollections/linked_list.rs b/src/libcollections/linked_list.rs
@@ -832,6 +832,8 @@ impl<A> DoubleEndedIterator for IntoIter<A> {
     fn next_back(&mut self) -> Option<A> { self.list.pop_back() }
 }
 
+impl<A> ExactSizeIterator for IntoIter<A> {}
+
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<A> FromIterator<A> for LinkedList<A> {
     fn from_iter<T: IntoIterator<Item=A>>(iter: T) -> LinkedList<A> {

Original file line number	Diff line number	Diff line change
`@@ -832,6 +832,8 @@ impl<A> DoubleEndedIterator for IntoIter<A> {`
`832`	`832`	`fn next_back(&mut self) -> Option<A> { self.list.pop_back() }`
`833`	`833`	`}`
`834`	`834`
	`835`	`+impl<A> ExactSizeIterator for IntoIter<A> {}`
	`836`	`+`
`835`	`837`	`#[stable(feature = "rust1", since = "1.0.0")]`
`836`	`838`	`impl<A> FromIterator<A> for LinkedList<A> {`
`837`	`839`	`fn from_iter<T: IntoIterator<Item=A>>(iter: T) -> LinkedList<A> {`