Early-breaking from Rust's match

Question

I want to switch through many possible cases for x and there\'s one case (here x == 0) where I want to check the result of some additional code to

Answer 1

You could create a macro like

macro_rules! block {
    ($xs:block) => {
        loop { let _ = $xs; break; }
    };
}

and do

match x {
    1 => block!({
        ...
        if y == 0 { break; }
        ...
    })
    _ => {}
}

It's not an amazing solution, but it is semantically meaningful.