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stabilize Option::as_(mut_)slice

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This commit is contained in:
Andre Bogus 2023-09-28 08:31:14 +02:00
parent aeaa5c30e5
commit 702da3b89c
2 changed files with 2 additions and 13 deletions
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1
compiler/rustc_hir_typeck/src/lib.rs
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@ -5,7 +5,6 @@
#![feature(box_patterns)]
#![feature(min_specialization)]
#![feature(control_flow_enum)]
#![feature(option_as_slice)]
#![recursion_limit = "256"]
#[macro_use]

14
library/core/src/option.rs
View File

@ -743,8 +743,6 @@ impl<T> Option<T> {
/// # Examples
///
/// ```rust
/// #![feature(option_as_slice)]
///
/// assert_eq!(
/// [Some(1234).as_slice(), None.as_slice()],
/// [&[1234][..], &[][..]],
@ -755,15 +753,13 @@ impl<T> Option<T> {
/// borrowing) [`[_]::first`](slice::first):
///
/// ```rust
/// #![feature(option_as_slice)]
///
/// for i in [Some(1234_u16), None] {
/// assert_eq!(i.as_ref(), i.as_slice().first());
/// }
/// ```
#[inline]
#[must_use]
#[unstable(feature = "option_as_slice", issue = "108545")]
#[stable(feature = "option_as_slice", since = "CURRENT_RUSTC_VERSION")]
pub fn as_slice(&self) -> &[T] {
// SAFETY: When the `Option` is `Some`, we're using the actual pointer
// to the payload, with a length of 1, so this is equivalent to
@ -794,8 +790,6 @@ impl<T> Option<T> {
/// # Examples
///
/// ```rust
/// #![feature(option_as_slice)]
///
/// assert_eq!(
/// [Some(1234).as_mut_slice(), None.as_mut_slice()],
/// [&mut [1234][..], &mut [][..]],
@ -806,8 +800,6 @@ impl<T> Option<T> {
/// our original `Option`:
///
/// ```rust
/// #![feature(option_as_slice)]
///
/// let mut x = Some(1234);
/// x.as_mut_slice()[0] += 1;
/// assert_eq!(x, Some(1235));
@ -817,13 +809,11 @@ impl<T> Option<T> {
/// is [`[_]::first_mut`](slice::first_mut):
///
/// ```rust
/// #![feature(option_as_slice)]
///
/// assert_eq!(Some(123).as_mut_slice().first_mut(), Some(&mut 123))
/// ```
#[inline]
#[must_use]
#[unstable(feature = "option_as_slice", issue = "108545")]
#[stable(feature = "option_as_slice", since = "CURRENT_RUSTC_VERSION")]
pub fn as_mut_slice(&mut self) -> &mut [T] {
// SAFETY: When the `Option` is `Some`, we're using the actual pointer
// to the payload, with a length of 1, so this is equivalent to