RS.CLIPPY.RENAMED_FUNCTION_PARAMS

Renamed function parameters in trait implementation

This checker is a Clippy lint created by The Rust Project Contributors. The documentation shown here is a copy of the original documentation for: renamed_function_params. Copyright ©2025 The Rust Team. All rights reserved.

What it does

Lints when the name of function parameters from trait impl is different than its default implementation.

Why restrict this?

Using the default name for parameters of a trait method is more consistent.

Example

struct A(u32);

impl PartialEq for A {
    fn eq(&self, b: &Self) -> bool {
        self.0 == b.0
    }
}

Use instead:

struct A(u32);

impl PartialEq for A {
    fn eq(&self, other: &Self) -> bool {
        self.0 == other.0
    }
}

Configuration

allow-renamed-params-for: List of trait paths to ignore when checking renamed function parameters.

Example

allow-renamed-params-for = [ "std::convert::From" ]

Noteworthy

By default, the following traits are ignored: From, TryFrom, FromStr
".." can be used as part of the list to indicate that the configured values should be appended to the default configuration of Clippy. By default, any configuration will replace the default value.

(default: ["core::convert::From", "core::convert::TryFrom", "core::str::FromStr"])