fn main() {
    let pair = (2, 2);

    println!("Pair: {:?}", pair);
    match pair {
        (x, y) if x == y => println!("These are twins"),
        // The ^ `if condition` part is a guard
        (x, y) if x + y == 0 => println!("Antimatter, kaboom!"),
        (x, _) if x % 2 == 1 => println!("The first one is odd"),
        _ => println!("No correlation")

    }
}