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Rollup merge of #125171 - scottmcm:rename-flatten, r=jhpratt

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Rename `flatten(_mut)` → `as_flattened(_mut)`

As requested by libs-api in https://github.com/rust-lang/rust/issues/95629#issuecomment-2113081194

(This is just the rename, not the stabilization, so can land without waiting on the FCP in that other issue.)
This commit is contained in:
Matthias Krüger 2024-05-17 07:20:57 +02:00 committed by GitHub
commit 7a8d222d6b
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2 changed files with 10 additions and 10 deletions
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16
library/core/src/slice/mod.rs
View File

@ -4533,21 +4533,21 @@ impl<T, const N: usize> [[T; N]] {
/// ```
/// #![feature(slice_flatten)]
///
/// assert_eq!([[1, 2, 3], [4, 5, 6]].flatten(), &[1, 2, 3, 4, 5, 6]);
/// assert_eq!([[1, 2, 3], [4, 5, 6]].as_flattened(), &[1, 2, 3, 4, 5, 6]);
///
/// assert_eq!(
/// [[1, 2, 3], [4, 5, 6]].flatten(),
/// [[1, 2], [3, 4], [5, 6]].flatten(),
/// [[1, 2, 3], [4, 5, 6]].as_flattened(),
/// [[1, 2], [3, 4], [5, 6]].as_flattened(),
/// );
///
/// let slice_of_empty_arrays: &[[i32; 0]] = &[[], [], [], [], []];
/// assert!(slice_of_empty_arrays.flatten().is_empty());
/// assert!(slice_of_empty_arrays.as_flattened().is_empty());
///
/// let empty_slice_of_arrays: &[[u32; 10]] = &[];
/// assert!(empty_slice_of_arrays.flatten().is_empty());
/// assert!(empty_slice_of_arrays.as_flattened().is_empty());
/// ```
#[unstable(feature = "slice_flatten", issue = "95629")]
pub const fn flatten(&self) -> &[T] {
pub const fn as_flattened(&self) -> &[T] {
let len = if T::IS_ZST {
self.len().checked_mul(N).expect("slice len overflow")
} else {
@ -4581,11 +4581,11 @@ impl<T, const N: usize> [[T; N]] {
/// }
///
/// let mut array = [[1, 2, 3], [4, 5, 6], [7, 8, 9]];
/// add_5_to_all(array.flatten_mut());
/// add_5_to_all(array.as_flattened_mut());
/// assert_eq!(array, [[6, 7, 8], [9, 10, 11], [12, 13, 14]]);
/// ```
#[unstable(feature = "slice_flatten", issue = "95629")]
pub fn flatten_mut(&mut self) -> &mut [T] {
pub fn as_flattened_mut(&mut self) -> &mut [T] {
let len = if T::IS_ZST {
self.len().checked_mul(N).expect("slice len overflow")
} else {

4
library/core/tests/slice.rs
View File

@ -2609,14 +2609,14 @@ fn test_slice_from_ptr_range() {
#[should_panic = "slice len overflow"]
fn test_flatten_size_overflow() {
let x = &[[(); usize::MAX]; 2][..];
let _ = x.flatten();
let _ = x.as_flattened();
}
#[test]
#[should_panic = "slice len overflow"]
fn test_flatten_mut_size_overflow() {
let x = &mut [[(); usize::MAX]; 2][..];
let _ = x.flatten_mut();
let _ = x.as_flattened_mut();
}
#[test]