manual-range-pattern

Prefer range patterns over enumerating consecutive values

A union that enumerates consecutive scalar values repeats the interval element by element.
Instead, you SHOULD write one inclusive range pattern.

- Category: style
- Level: warning
- Fix: suggestion
- Scope: module

Reported

function digit(value: char): boolean {
    return match (value) {
        '0' | '1' | '2' | '3' => true
        _ => false
    };
}
Accepted

function digit(value: char): boolean {
    return match (value) {
        '0'..='3' => true
        _ => false
    };
}
Prior art

- Clippy · manualrangepatterns

language/linter/src/rules/style/manualrangepattern.rs:10