fn main() {
    let mut vec = Vec::new();
    vec.push("hello".to_string());

    let mut args = ["print", "print"].iter();
    while let Some(arg) = args.next() {
        match arg.as_ref() {
            "print" => {
                print(&vec);
                // break;
            }
            _ => {}
        }
    }
}

fn print(_vec: &[String]){
    println!("{:?}", _vec);
}