box-o-sand/rustbyexample/hello.d/print.d/print_display.rs

use std::fmt;

struct Structure(i32);

impl fmt::Display for Structure {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{}", self.0)
    }
}

fn main() {
    let s = Structure(4);
    println!("s={}", s);
}