rust-lang / rust-lang/rust

Tracking Issue for `Box::take`

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#147,212 9 comments 4 reactions 0 assignees View on GitHub

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C-tracking-issue T-libs
Dominant language
Rust
Stars
119k
Forks
16.1k
PR merge metrics
PR metrics pending

Description

Feature gate: #![feature(box_take)]

This is a tracking issue for Box::take, which adds the ability to move the value out of a Box without consuming its allocation.

Public API
impl<T> Box<T> {
    pub fn take(boxed: Box<T>) -> (T, Box<MaybeUninit<T>>);
}
Steps / History

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

Unresolved Questions

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the Box::take API and the implementation PR #147227, then review stabilization PR #160436 and the linked ACP. The issue's checklist indicates that final comment period and stabilization remain; done means the unresolved lifecycle steps are completed and the checklist is updated.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
compilers
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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