rust-lang/rust-clippy

Lint for unused arguments starting with a _

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#3,219 创建于 2018年9月25日

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 (11 评论) (0 反应) (0 负责人)Rust (10,406 star) (1,391 fork)batch import
A-lintL-stylegood first issue

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In response to this comment

I think the idea here would be to recommend removal of arguments that are ignored and never referenced.

On the flip side, I'm wondering if it would make sense to also lint for used arguments starting _ which recommends removing the _, because that came up in the same review.

贡献者指南

技术栈
rust
领域
tooling
议题类型
feature
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3
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stale
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mostly clear
前置要求
Familiarity with RustUnderstanding of Clippy's lint API
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30
研究方向
To implement this lint, examine how existing unused argument lints work in Clippy (e.g., `unused arguments`). The issue references a comment in PR #3203 which discusses the idea. The lint should detect function arguments that start with ` ` but are never used in the body, and optionally warn when a ` ` argument is used. Start by looking at the Clippy lint collection in `clippy lints/src/` and the Rust compiler's `rustc lint` API. The discussion may have further guidance on naming and behavior.