Unused subpattern

[A4-Tacks]

What it does

• Simplified code

Advantage

• Clean

Drawbacks

Possible change of Drop point

Example

fn main() {
    let (a, b) = (2, 3);
    match (a, b) {
        (_, 2) => todo!(),
        (_, 3) => todo!(),
        _ => todo!(),
    }
}

Could be written as:

fn main() {
    let (a, b) = (2, 3);
    match b {
        2 => todo!(),
        3 => todo!(),
        _ => todo!(),
    }
}