rust-lang/rust-clippy

Lint for unused arguments starting with a _

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#3,219 opened on Sep 25, 2018

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Description

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.

Contributor guide

Research direction
Examine the existing unused variable lint in Clippy and understand how to add a new lint for arguments starting with underscore. Look at similar lints for guidance.
Tech stack
rust
Domain
developer experiencetooling
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
RustClippy development basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65