rust at operator binding

binding_arr.rs

fn main() {
    let strs = ["hello world", "1", "hello", "world"];
    let mut remaining: &[&str] = &strs;

    while let [current, tail @ ..] = remaining {
        println!("{} - {:?}", current, tail);
        remaining = tail;
    }
    println!("The real strs {:?}", strs);
}