Rust study : Formatted print Debug

formatted_print_debug

/*
The rust by example ko https://hanbum.gitbooks.io/rustbyexample/content/hello/print/print_debug.html
compiled on https://play.rust-lang.org/
result:
12 months in a year
"Christian" "Slater" is the "actor's" name.
Now Structure(3) will print!
Now Deep(Structure(3)) will print!
*/

#[derive(Debug)]
struct Structure(
    i32
);

#[derive(Debug)]
struct Deep(
    Structure
);

fn main()
{
    println!("{:?} months in a year", 12);
    println!("{1:?} {0:?} is the {actor:?} name.",
        "Slater",
        "Christian",
        actor="actor's"
    );
    
    println!("Now {:?} will print!", Structure(3));
    println!("Now {:?} will print!", Deep(Structure(3)));
}