stabilize core::array::{from_ref,from_mut}

This commit is contained in:
Waffle 2021-04-11 22:06:32 +03:00
parent 010c2368fa
commit 740b0529fb
2 changed files with 2 additions and 3 deletions

View file

@ -23,14 +23,14 @@ mod iter;
pub use iter::IntoIter;
/// Converts a reference to `T` into a reference to an array of length 1 (without copying).
#[unstable(feature = "array_from_ref", issue = "77101")]
#[stable(feature = "array_from_ref", since = "1.53.0")]
pub fn from_ref<T>(s: &T) -> &[T; 1] {
// SAFETY: Converting `&T` to `&[T; 1]` is sound.
unsafe { &*(s as *const T).cast::<[T; 1]>() }
}
/// Converts a mutable reference to `T` into a mutable reference to an array of length 1 (without copying).
#[unstable(feature = "array_from_ref", issue = "77101")]
#[stable(feature = "array_from_ref", since = "1.53.0")]
pub fn from_mut<T>(s: &mut T) -> &mut [T; 1] {
// SAFETY: Converting `&mut T` to `&mut [T; 1]` is sound.
unsafe { &mut *(s as *mut T).cast::<[T; 1]>() }

View file

@ -1,6 +1,5 @@
#![feature(alloc_layout_extra)]
#![feature(array_chunks)]
#![feature(array_from_ref)]
#![feature(array_methods)]
#![feature(array_map)]
#![feature(array_windows)]