Shared via Rust Playground

playground.rs

use std::fmt::Debug;

fn takes_two_things<T: Debug, U: Debug>(x: T, y: U) {
        println!("{:?} {:?}", x, y);
}

fn main() {
    takes_two_things(3, "ok");
    takes_two_things(3, 2); // fine if the same
}