OpenE2K/rust
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

std: Stabilize the iter_{once,empty} features

Browse Source 
This commit stabilizes these two iterator primitives as they have gone through
the RFC process and had some time to bake now.
This commit is contained in:
Alex Crichton 2015-06-10 18:45:48 -07:00
parent f3580879b9
commit 17a1059d83
1 changed files with 12 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
src/libcore/iter.rs
View File

@ -3043,10 +3043,10 @@ pub fn repeat<T: Clone>(elt: T) -> Repeat<T> {
}
/// An iterator that yields nothing.
#[unstable(feature="iter_empty", reason = "new addition")]
#[stable(feature = "iter_empty", since = "1.2.0")]
pub struct Empty<T>(marker::PhantomData<T>);
#[unstable(feature="iter_empty", reason = "new addition")]
#[stable(feature = "iter_empty", since = "1.2.0")]
impl<T> Iterator for Empty<T> {
type Item = T;
@ -3059,14 +3059,14 @@ impl<T> Iterator for Empty<T> {
}
}
#[unstable(feature="iter_empty", reason = "new addition")]
#[stable(feature = "iter_empty", since = "1.2.0")]
impl<T> DoubleEndedIterator for Empty<T> {
fn next_back(&mut self) -> Option<T> {
None
}
}
#[unstable(feature="iter_empty", reason = "new addition")]
#[stable(feature = "iter_empty", since = "1.2.0")]
impl<T> ExactSizeIterator for Empty<T> {
fn len(&self) -> usize {
0
@ -3075,7 +3075,7 @@ impl<T> ExactSizeIterator for Empty<T> {
// not #[derive] because that adds a Clone bound on T,
// which isn't necessary.
#[unstable(feature="iter_empty", reason = "new addition")]
#[stable(feature = "iter_empty", since = "1.2.0")]
impl<T> Clone for Empty<T> {
fn clone(&self) -> Empty<T> {
Empty(marker::PhantomData)
@ -3084,7 +3084,7 @@ impl<T> Clone for Empty<T> {
// not #[derive] because that adds a Default bound on T,
// which isn't necessary.
#[unstable(feature="iter_empty", reason = "new addition")]
#[stable(feature = "iter_empty", since = "1.2.0")]
impl<T> Default for Empty<T> {
fn default() -> Empty<T> {
Empty(marker::PhantomData)
@ -3092,19 +3092,19 @@ impl<T> Default for Empty<T> {
}
/// Creates an iterator that yields nothing.
#[unstable(feature="iter_empty", reason = "new addition")]
#[stable(feature = "iter_empty", since = "1.2.0")]
pub fn empty<T>() -> Empty<T> {
Empty(marker::PhantomData)
}
/// An iterator that yields an element exactly once.
#[derive(Clone)]
#[unstable(feature="iter_once", reason = "new addition")]
#[stable(feature = "iter_once", since = "1.2.0")]
pub struct Once<T> {
inner: ::option::IntoIter<T>
}
#[unstable(feature="iter_once", reason = "new addition")]
#[stable(feature = "iter_once", since = "1.2.0")]
impl<T> Iterator for Once<T> {
type Item = T;
@ -3117,14 +3117,14 @@ impl<T> Iterator for Once<T> {
}
}
#[unstable(feature="iter_once", reason = "new addition")]
#[stable(feature = "iter_once", since = "1.2.0")]
impl<T> DoubleEndedIterator for Once<T> {
fn next_back(&mut self) -> Option<T> {
self.inner.next_back()
}
}
#[unstable(feature="iter_once", reason = "new addition")]
#[stable(feature = "iter_once", since = "1.2.0")]
impl<T> ExactSizeIterator for Once<T> {
fn len(&self) -> usize {
self.inner.len()
@ -3132,7 +3132,7 @@ impl<T> ExactSizeIterator for Once<T> {
}
/// Creates an iterator that yields an element exactly once.
#[unstable(feature="iter_once", reason = "new addition")]
#[stable(feature = "iter_once", since = "1.2.0")]
pub fn once<T>(value: T) -> Once<T> {
Once { inner: Some(value).into_iter() }
}