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Tracking Issue for *mut [T]::split_at_mut #95595

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the8472 opened this issue Apr 2, 2022 · 3 comments
Open
1 of 3 tasks

Tracking Issue for *mut [T]::split_at_mut #95595

the8472 opened this issue Apr 2, 2022 · 3 comments
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A-raw-pointers Area: raw pointers, MaybeUninit, NonNull A-slice Area: [T] C-tracking-issue Category: A tracking issue for an RFC or an unstable feature. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.

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@the8472
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the8472 commented Apr 2, 2022

The feature gate for the issue is #![feature(raw_slice_split)].

This is a tracking issue for the split_at_mut method on raw slice pointers

Public API

impl<T> *mut [T] {
   pub unsafe fn split_at_mut(self, mid: usize) -> (*mut [T], *mut [T]);

   pub unsafe fn split_at_mut_unchecked(self, mid: usize) -> (*mut [T], *mut [T]);
}

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@the8472 the8472 added T-libs-api Relevant to the library API team, which will review and decide on the PR/issue. C-tracking-issue Category: A tracking issue for an RFC or an unstable feature. A-slice Area: [T] A-raw-pointers Area: raw pointers, MaybeUninit, NonNull labels Apr 2, 2022
@lukas-code
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Is there any reason why these (and is_empty) only exist for *mut [T] and not *const [T]?

@the8472
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the8472 commented Mar 21, 2023

No particular reason beyond that there only was an immediate motivating use for *mut, not one for *const.

@RalfJung
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#118231 adds is_empty to const raw pointers; a PR to do the same for the split methods would be welcome. :)

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Labels
A-raw-pointers Area: raw pointers, MaybeUninit, NonNull A-slice Area: [T] C-tracking-issue Category: A tracking issue for an RFC or an unstable feature. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
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