rust match

    let i = 3;
    match i {
        0 => println!("000"),
        1...11 => println!("1-11"),
        _ => println!("other"),
    }
1-11

    let mut v = vec![1,2,3,4];
    loop {
        match v.pop() {
            Some(x) => println!("{}",x),
            None => break,
        }
    }

4
3
2
1