rust-lang / rust-lang/rust

Tracking Issue for SliceIndex wrapper types

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C-tracking-issue T-libs
Dominant language
Rust
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Forks
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PR merge metrics
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Description

Feature gate: #![feature(sliceindex_wrappers)]

This is a tracking issue for the SliceIndex wrapper types Clamp and Last.
ACP: rust-lang/libs-team#619

Public API
pub struct Clamp<Idx>(pub index: Idx);

impl<T, Idx: SliceIndex<T>> SliceIndex<T> for Clamp<Idx> {
    ...
}

pub struct Last;

impl<T> SliceIndex<T> for Last {
    ...
}
Steps / History

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

  • Implementation: #146260
  • Final comment period (FCP)^1
  • Stabilization PR
Unresolved Questions
  • None yet.

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

This is a tracking issue for Rust's SliceIndex wrapper types Clamp and Last; implementation is tracked in #146260. Start by reviewing that implementation and the stabilization process in the linked feature-lifecycle guide, then follow the remaining FCP and stabilization PR steps. Done means the feature completes stabilization.

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
Quiet
Clarity
Mostly clear
Newbie friendliness
25/100

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