Tracking Issue for Iterator::contains
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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(iter_contains)]
This is a tracking issue for a method of the Iterator trait that checks whether an iterator contains an item.
A method of the iterator trait to check whether it contains an element.
It goes over all the elements in the iterator and checks if they are in the collection.
Public API
fn contains<Q: ?Sized>(&mut self, item: Q) -> bool
where
Q: PartialEq<Self::Item>,
Self: Sized,
Steps / History
- ACP: https://github.com/rust-lang/libs-team/issues/408
- Implementation: #135018
- Final comment period (FCP)^1
- Stabilization PR
Unresolved Questions
- None yet.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the proposed Iterator::contains API and review the linked ACP and implementation issue #135018. The tracking issue records that implementation is still unchecked and that final comment period and stabilization remain; done requires completing the feature lifecycle rather than a single code edit.
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
- 20/100