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auto merge of #10885 : kballard/rust/as_mut_slice, r=cmr 

This method is primarily intended to allow for converting a [T, ..N] to
a &mut [T].
This commit is contained in:
bors 2013-12-30 01:41:55 -08:00
parent adc5eefa23 01209f1e3a
commit 28a091fc7c
1 changed files with 6 additions and 0 deletions
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6
src/libstd/vec.rs
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@ -2069,6 +2069,10 @@ fn merge_sort<T>(v: &mut [T], compare: |&T, &T| -> Ordering) {
/// Extension methods for vectors such that their elements are
/// mutable.
pub trait MutableVector<'a, T> {
/// Work with `self` as a mut slice.
/// Primarily intended for getting a &mut [T] from a [T, ..N].
fn as_mut_slice(self) -> &'a mut [T];
/// Return a slice that points into another slice.
fn mut_slice(self, start: uint, end: uint) -> &'a mut [T];
@ -2302,6 +2306,8 @@ pub trait MutableVector<'a, T> {
impl<'a,T> MutableVector<'a, T> for &'a mut [T] {
#[inline]
fn as_mut_slice(self) -> &'a mut [T] { self }
fn mut_slice(self, start: uint, end: uint) -> &'a mut [T] {
assert!(start <= end);
assert!(end <= self.len());