Rust dynamic dispatch vs static dispatch

main.rs

trait Test {
    fn toto(&self) -> String;
}

impl Test for uint {
    fn toto(&self) -> String {
        "uint".to_string()
    }
}

impl Test for int {
    fn toto(&self) -> String {
        "int".to_string()
    }
}

fn print_toto_dynamic(value: &Test) {
    println!("{}", value.toto());
}

fn print_toto_static<T: Test>(value: T) {
    println!("{}", value.toto());
}

// This code is editable and runnable!
fn main() {
    print_toto_dynamic(&1u);
    print_toto_dynamic(&1i);
    
    print_toto_static(1u);
    print_toto_static(1i);
}