fn main() {
    let s = "abcd";
    let bytes = s.as_bytes();

    println!("{:?}", bytes.iter().enumerate().collect::<Vec<_>>());
    // prints [(0, 97), (1, 98), (2, 99), (3, 100)]

    println!("{:?}", bytes.iter().enumerate().skip(1).collect::<Vec<_>>());
    // prints [(1, 98), (2, 99), (3, 100)]

    println!("{:?}", bytes.iter().skip(1).enumerate().collect::<Vec<_>>());
    // prints [(0, 98), (1, 99), (2, 100)]
}