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Stabilize const_slice_split_at_mut and const_slice_first_last_chunk #130428

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merged 1 commit into from
Oct 5, 2024
Merged

Stabilize const_slice_split_at_mut and const_slice_first_last_chunk #130428

merged 1 commit into from
Oct 5, 2024

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onestacked
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@onestacked onestacked commented Sep 16, 2024 •
edited by RalfJung
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Stabilizes #101804 and the remainder of #111774.

FCP proposed in the tracking issue.

Requires #130403 (or it would need a rustc_allow_const_fn_unstable for it)

Stabilized const API:

// slice
impl [T] {
    pub const fn split_at_mut(&mut self, mid: usize) -> (&mut [T], &mut [T]);
    pub const fn split_at_mut_unchecked(&mut self, mid: usize) -> (&mut [T], &mut [T]);
    pub const fn split_at_mut_checked(&mut self, mid: usize) -> Option<(&mut [T], &mut [T])>;

    pub const fn first_chunk_mut<const N: usize>(&mut self) -> Option<&mut [T; N]>;
    pub const fn last_chunk_mut<const N: usize>(&mut self) -> Option<&mut [T; N]>;
    pub const fn split_first_chunk_mut<const N: usize>(&mut self) -> Option<(&mut [T; N], &mut [T])>;
    pub const fn split_last_chunk_mut<const N: usize>(&mut self) -> Option<(&mut [T; N], &mut [T])>;
}

Closes #101804
Closes #111774

cc @RalfJung

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Failed to set assignee to gohst: invalid assignee

Note: Only org members with at least the repository "read" role, users with write permissions, or people who have commented on the PR may be assigned.

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Sep 16, 2024
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Cc @rust-lang/wg-const-eval

@RalfJung RalfJung added the S-waiting-on-fcp Status: PR is in FCP and is awaiting for FCP to complete. label Sep 16, 2024
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bors commented Sep 24, 2024

☔ The latest upstream changes (presumably #130738) made this pull request unmergeable. Please resolve the merge conflicts.

@onestacked onestacked mentioned this pull request Sep 24, 2024
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@workingjubilee workingjubilee mentioned this pull request Sep 29, 2024
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workingjubilee commented Sep 29, 2024 •
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r? @workingjubilee

@onestacked Could you remove the TODO and fix this up so it can be merged after the other PR lands? We usually just tag PRs as S-blocked to indicate they shouldn't be merged. You might have to fix it up for merge conflicts anyways.

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@workingjubilee I'll wait until the FCP is done, to avoid having to rebase again and again.

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If you want you can include stabilizing #111774 in this PR as well, as it depends on the feature here and the two went into FCP together. Given the amount of feature gates moving towards stabilization, there's no reason to have an individual PR for each of them. :)

@onestacked onestacked changed the title Stabilize const_slice_split_at_mut Stabilize const_slice_split_at_mut and slice_first_last_chunk Sep 29, 2024
@onestacked onestacked changed the title Stabilize const_slice_split_at_mut and slice_first_last_chunk Stabilize const_slice_split_at_mut and const_slice_first_last_chunk Sep 29, 2024
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@onestacked onestacked marked this pull request as ready for review September 29, 2024 22:09
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Thank you!

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bors commented Oct 5, 2024

☔ The latest upstream changes (presumably #131269) made this pull request unmergeable. Please resolve the merge conflicts.

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RalfJung commented Oct 5, 2024

Both FCPs have passed, so this is ready to go.

@onestacked can you resolve the conflicts?

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RalfJung commented Oct 5, 2024

r=me when CI is green.

@bors delegate+

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bors commented Oct 5, 2024

✌️ @onestacked, you can now approve this pull request!

If @RalfJung told you to "r=me" after making some further change, please make that change, then do @bors r=@RalfJung

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CI passed.
@bors r=@RalfJung

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bors commented Oct 5, 2024

📌 Commit d0e6758 has been approved by RalfJung

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Oct 5, 2024
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RalfJung commented Oct 5, 2024

@bors rollup

@matthiaskrgr matthiaskrgr mentioned this pull request Oct 5, 2024
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bors added a commit to rust-lang-ci/rust that referenced this pull request Oct 5, 2024
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Auto merge of rust-lang#131288 - matthiaskrgr:rollup-h0t0v2h, r=matth…
f559d61 
…iaskrgr

Rollup of 5 pull requests

Successful merges:

 - rust-lang#130428 (Stabilize `const_slice_split_at_mut` and `const_slice_first_last_chunk`)
 - rust-lang#131094 (std: replace `LazyBox` with `OnceBox`)
 - rust-lang#131256 (move f16/f128 const fn under f16/f128 feature gate)
 - rust-lang#131278 (remove outdated contribution direction)
 - rust-lang#131286 (Miri subtree update)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 386a0ba into rust-lang:master Oct 5, 2024
6 checks passed
@rustbot rustbot added this to the 1.83.0 milestone Oct 5, 2024
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Oct 5, 2024
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Unrolled build for rust-lang#130428
df832ae 
Rollup merge of rust-lang#130428 - ink-feather-org:stabilize-const-split-at-mut, r=RalfJung

Stabilize `const_slice_split_at_mut` and `const_slice_first_last_chunk`

Stabilizes rust-lang#101804 and the remainder of rust-lang#111774.

FCP proposed in the tracking issue.

Requires rust-lang#130403 (or it would need a rustc_allow_const_fn_unstable for it)

Stabilized const API:
```rust
// slice
impl [T] {
    pub const fn split_at_mut(&mut self, mid: usize) -> (&mut [T], &mut [T]);
    pub const fn split_at_mut_unchecked(&mut self, mid: usize) -> (&mut [T], &mut [T]);
    pub const fn split_at_mut_checked(&mut self, mid: usize) -> Option<(&mut [T], &mut [T])>;

    pub const fn first_chunk_mut<const N: usize>(&mut self) -> Option<&mut [T; N]>;
    pub const fn last_chunk_mut<const N: usize>(&mut self) -> Option<&mut [T; N]>;
    pub const fn split_first_chunk_mut<const N: usize>(&mut self) -> Option<(&mut [T; N], &mut [T])>;
    pub const fn split_last_chunk_mut<const N: usize>(&mut self) -> Option<(&mut [T; N], &mut [T])>;
}
```

Closes rust-lang#101804
Closes rust-lang#111774

cc `@RalfJung`
@onestacked onestacked deleted the stabilize-const-split-at-mut branch October 5, 2024 15:06
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