RS.CLIPPY.MANUAL_ABS_DIFF

Using an if-else pattern instead of `abs_diff`

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

What it does

Detects patterns like if a > b { a - b } else { b - a } and suggests using a.abs_diff(b).

Why is this bad?

Using abs_diff is shorter, more readable, and avoids control flow.

Examples

if a > b {
    a - b
} else {
    b - a
}

Use instead:

a.abs_diff(b)

Configuration

msrv: The minimum rust version that the project supports. Defaults to the rust-version field in Cargo.toml

(default: current version)