// https://rust.cc/article?id=fa12f620-5dbd-4e61-a8c1-2529e71bc96b
fn main() {
    greet(&[]);
    greet(&["alice"]);
    greet(&["alice", "bob"]);
    greet(&["alice", "bob", "tom"]);

    let arr = [1, 2, 3];
    println!("{}", match arr {
        [_, _, 3] => "Ends with 3",
        [_, _, _] => "Ends with something else",
    });
}

fn greet(people: &[&str]) {
    match people {
        [] => println!("No noe here!"),
        [one] => println!("Has one: {}", one),
        [one, two] => println!("Has two: {} and {}", one, two),
        many => println!("Has many: {:?}", many),
    }
}

// UNSTABLE FEATURE:
// fn first<T>(xs: &[T]) -> Option<&T> {
//     match xs {
//         [x, ..] => Some(x),
//         [] => None,
//     }
// }