Tracking Issue for LocalKey<Cell>::update

[camsteffen]

Feature gate: #![feature(local_key_cell_update)]

This is a tracking issue for adding LocalKey::<Cell<T>>::update, similar to other LocalKey::<Cell<T>> methods.

ACP: rust-lang/libs-team#617

Public API

impl<T: 'static> LocalKey<Cell<T>> {
    pub fn update(&'static self, f: impl FnOnce(T) -> T) where T: Copy;
}

Steps / History

(Remember to update the S-tracking-* label when checking boxes.)

• Implementation: Add LocalKey<Cell>::update #143990
• Final comment period (FCP)¹
• Stabilization PR

Unresolved Questions

• None yet.

Footnotes

1. https://std-dev-guide.rust-lang.org/feature-lifecycle/stabilization.html ↩

[pthariensflame]

Is this ready to be stabilized? We don't see any outstanding concerns, or indeed any questions about this API’s shape or behavior.

[tgross35]

Stabilization PR #157734

[Amanieu]

@rfcbot merge libs-api

[rust-rfcbot]

@Amanieu has proposed to merge this. The next step is review by the rest of the tagged team members:

• @Amanieu
• @BurntSushi
• @dtolnay
• @joshtriplett
• @the8472

No concerns currently listed.

Once a majority of reviewers approve (and at most 2 approvals are outstanding), this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!

See this document for info about what commands tagged team members can give me.