diff options
| -rw-r--r-- | src/libcore/iter/adapters/flatten.rs | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/src/libcore/iter/adapters/flatten.rs b/src/libcore/iter/adapters/flatten.rs index d8d41a2a31e..d812da26580 100644 --- a/src/libcore/iter/adapters/flatten.rs +++ b/src/libcore/iter/adapters/flatten.rs @@ -72,8 +72,7 @@ impl<I: Iterator, U: IntoIterator, F> Iterator for FlatMap<I, U, F> impl<I: DoubleEndedIterator, U, F> DoubleEndedIterator for FlatMap<I, U, F> where F: FnMut(I::Item) -> U, - U: IntoIterator, - U::IntoIter: DoubleEndedIterator, + U: IntoIterator<IntoIter: DoubleEndedIterator>, { #[inline] fn next_back(&mut self) -> Option<U::Item> { self.inner.next_back() } @@ -107,10 +106,7 @@ impl<I, U, F> FusedIterator for FlatMap<I, U, F> /// [`Iterator`]: trait.Iterator.html #[must_use = "iterators are lazy and do nothing unless consumed"] #[stable(feature = "iterator_flatten", since = "1.29.0")] -pub struct Flatten<I: Iterator> -where - I::Item: IntoIterator, -{ +pub struct Flatten<I: Iterator<Item: IntoIterator>> { inner: FlattenCompat<I, <I::Item as IntoIterator>::IntoIter>, } |