di.rs

fn di_dynamic() {
    struct S;

    struct P;

    trait T {
        fn name(&self);
    }

    impl T for S {
        fn name(&self) {
            println!("S");
        }
    }
    impl T for P {
        fn name(&self) {
            println!("P");
        }
    }

    let mut container: Vec<Box<T>> = vec![];
    container.push(Box::new(S));
    container.push(Box::new(P));
    for trait_obj in container {
        trait_obj.name();
    }
}

fn di_static() {
    struct S;

    struct P;

    trait T {
        fn name();
    }

    impl T for S {
        fn name() {
            println!("S");
        }
    }
    impl T for P {
        fn name() {
            println!("P");
        }
    }

    macro_rules! types_call {
        ( $($v:ident),* )=> {
            $(
                $v::name();
            )*
        }
    }

    types_call!(S, P);
}