Rust | References and Borrowing

let s = String::from("data");
println!(&s);

fn main(){
    let mut s = String::from("data");
    print(&mut s); // ยืมแบบสามารถแก้ไขข้อมูล "data" ได้ด้วย
    println!("in main: {}", s);
}

fn print(n: &mut String) {
    println!("in print : {}", n);
    n.push_str(" change here");
}

in print : data
in main: data change here