RS.CLIPPY.MANUAL_RANGE_PATTERNS

Manually writing range patterns using a combined OR pattern (`|`)

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_range_patterns. Copyright ©2025 The Rust Team. All rights reserved.

What it does

Looks for combined OR patterns that are all contained in a specific range, e.g. 6 | 4 | 5 | 9 | 7 | 8 can be rewritten as 4..=9.

Why is this bad?

Using an explicit range is more concise and easier to read.

Known issues

This lint intentionally does not handle numbers greater than i128::MAX for u128 literals in order to support negative numbers.

Example

let x = 6;
let foo = matches!(x, 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10);

Use instead:

let x = 6;
let foo = matches!(x, 1..=10);