rust-lang / rust-lang/rust-clippy
Reduce `match` guard with equality with straightforward `match`
Open
Nobody has claimed this yet.
A-lint
- Dominant language
- Rust
- Stars
- 13.5k
- Forks
- 2.2k
- Avg merge
- 2d 10h
- Merged PRs (30d)
- 32
Description
What it does
Prefer matching on the value directly instead of using a guard with equality
Advantage
No response
Drawbacks
No response
Example
match x {
y if y == 100 => ...,
}
Could be written as:
match x {
100 => ...,
}
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 by reviewing Clippy's existing lint patterns for match guards and the Rust examples in this issue. The work is done when a guard comparing a matched value with equality is recognized as a direct value pattern, with coverage for the shown transformation.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 42/100