rust-lang / rust-lang/rust-clippy
lint empty ranges like `x..x`
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A-lint
- Dominant language
- Rust
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- Avg merge
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Description
What it does
Lint on things like 3..3 which is know to be empty, or something like x..x which more likely is a mistake.
I'm not sure if we have anything like Range::empty to suggest so this would probably be a suspicious lint in case there is not "official" way to construct an empty range.
Advantage
No response
Drawbacks
No response
Example
for i in (x..x) {
somecode();
}
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
Begin with the proposed 3..3 and x..x examples, and investigate whether Rust provides Range::empty and how this would fit the suspicious lint category. The issue is complete when the supported empty-range cases and intended lint behavior are specified and covered by tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100