rust-lang / rust-lang/rust-clippy
manual_unsigned_abs
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A-lint
- Dominant language
- Rust
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Description
What it does
Replace -{signed} as {unsigned} with {signed}.unsigned_abs()
Advantage
Clear and concise meaning & order of operations.
No panics or overflow (potentially).
Drawbacks
No response
Example
let n: isize = -42;
-n as usize
Could be written as:
let n: isize = -42;
n.unsigned_abs()
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
No implementation file or test is named. Start by reviewing rust-lang/rust-clippy's existing lint patterns for signed-to-unsigned casts; done means the requested unsigned_abs() replacement is covered by appropriate lint behavior and 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
- 42/100