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Add method .as_mut_slice() to MutableVector #10885

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Merged
merged 1 commit into from
Dec 30, 2013
Merged

Add method .as_mut_slice() to MutableVector #10885

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6 changes: 6 additions & 0 deletions src/libstd/vec.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -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];

Expand Down Expand Up @@ -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());
Expand Down