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library: Stabilize const_slice_first_last

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Const-stabilizes:
- `slice::first_mut`
- `slice::split_first_mut`
- `slice::last_mut`
- `slice::split_last_mut`
This commit is contained in:
Jubilee Young 2024-09-27 13:50:09 -07:00
parent 75db6b29b5
commit ac53f1f242
1 changed files with 8 additions and 4 deletions
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12
library/core/src/slice/mod.rs
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@ -172,7 +172,8 @@ impl<T> [T] {
/// assert_eq!(None, y.first_mut()); /// assert_eq!(None, y.first_mut());
/// ``` /// ```
#[stable(feature = "rust1", since = "1.0.0")] #[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_unstable(feature = "const_slice_first_last", issue = "83570")] #[cfg_attr(bootstrap, rustc_allow_const_fn_unstable(const_mut_refs))]
#[rustc_const_stable(feature = "const_slice_first_last", since = "CURRENT_RUSTC_VERSION")]
#[inline] #[inline]
#[must_use] #[must_use]
pub const fn first_mut(&mut self) -> Option<&mut T> { pub const fn first_mut(&mut self) -> Option<&mut T> {
@ -214,7 +215,8 @@ impl<T> [T] {
/// assert_eq!(x, &[3, 4, 5]); /// assert_eq!(x, &[3, 4, 5]);
/// ``` /// ```
#[stable(feature = "slice_splits", since = "1.5.0")] #[stable(feature = "slice_splits", since = "1.5.0")]
#[rustc_const_unstable(feature = "const_slice_first_last", issue = "83570")] #[cfg_attr(bootstrap, rustc_allow_const_fn_unstable(const_mut_refs))]
#[rustc_const_stable(feature = "const_slice_first_last", since = "CURRENT_RUSTC_VERSION")]
#[inline] #[inline]
#[must_use] #[must_use]
pub const fn split_first_mut(&mut self) -> Option<(&mut T, &mut [T])> { pub const fn split_first_mut(&mut self) -> Option<(&mut T, &mut [T])> {
@ -256,7 +258,8 @@ impl<T> [T] {
/// assert_eq!(x, &[4, 5, 3]); /// assert_eq!(x, &[4, 5, 3]);
/// ``` /// ```
#[stable(feature = "slice_splits", since = "1.5.0")] #[stable(feature = "slice_splits", since = "1.5.0")]
#[rustc_const_unstable(feature = "const_slice_first_last", issue = "83570")] #[cfg_attr(bootstrap, rustc_allow_const_fn_unstable(const_mut_refs))]
#[rustc_const_stable(feature = "const_slice_first_last", since = "CURRENT_RUSTC_VERSION")]
#[inline] #[inline]
#[must_use] #[must_use]
pub const fn split_last_mut(&mut self) -> Option<(&mut T, &mut [T])> { pub const fn split_last_mut(&mut self) -> Option<(&mut T, &mut [T])> {
@ -298,7 +301,8 @@ impl<T> [T] {
/// assert_eq!(None, y.last_mut()); /// assert_eq!(None, y.last_mut());
/// ``` /// ```
#[stable(feature = "rust1", since = "1.0.0")] #[stable(feature = "rust1", since = "1.0.0")]
#[rustc_const_unstable(feature = "const_slice_first_last", issue = "83570")] #[cfg_attr(bootstrap, rustc_allow_const_fn_unstable(const_mut_refs))]
#[rustc_const_stable(feature = "const_slice_first_last", since = "CURRENT_RUSTC_VERSION")]
#[inline] #[inline]
#[must_use] #[must_use]
pub const fn last_mut(&mut self) -> Option<&mut T> { pub const fn last_mut(&mut self) -> Option<&mut T> {