rust-lang / rust-lang/rust-clippy
lint String::as_str()
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A-lint
good first issue
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- Rust
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Description
Using my_string.as_str() is noisy and adds no value in comparison to &my_string. This lint should not apply to using it in a .map(_) or some other higher-order stuff, just calling the function directly.
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 locating Clippy's lint implementation and tests for direct String::as_str() calls. Confirm that direct calls can be replaced with &my_string, while uses in .map(_) or other higher-order contexts remain unaffected; add coverage showing both cases.
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