rust-lang / rust-lang/rust-clippy
Suggest std::iter::{once, empty}
Open
Nobody has claimed this yet.
A-lint
E-medium
L-complexity
L-suggestion
- Dominant language
- Rust
- Stars
- 13.5k
- Forks
- 2.2k
- Avg merge
- 2d 10h
- Merged PRs (30d)
- 32
Description
I don't know whether clippy is capable of doing this, but it would be nice to suggest std::iter::once() and std::iter::empty(), especially when things like vec![element].iter() (or similar) is used.
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 rust-clippy's existing lint implementations and tests for patterns involving vec![element].iter() or similar iterator construction. Determine the intended cases for suggesting std::iter::once() and std::iter::empty(), then add coverage showing the suggestions and verify the relevant Clippy tests pass.
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
- 32/100