rust-lang / rust-lang/rust-clippy
Suggest use `to_string` rather than `format!("{}")`
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A-lint
- Dominant language
- Rust
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Description
What it does
Sometime, people are using format!("{}") to stringify an object, which can be rewritten in .to_string() to keep code clean.
Lint Name
No response
Category
style
Advantage
No response
Drawbacks
No response
Example
let a = format!("{}", x);
Could be written as:
let a = x.to_string();
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
The issue names no files, tests, or entry points, so start by locating the existing Clippy style-lint implementation and its test conventions. Done means recognizing format!("{}", x) as equivalent to x.to_string() and covering the transformation with a regression test.
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
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 55/100