// A trait to implement all the shared functions that can be overriden
trait BaseTrait {
    fn foo0(&self) { println!("Foo 0!") }
    fn foo1(&self) { println!("Foo 1!") }
}

// An 'inheriting class' that implements some functions of it's own and overrides on
// Composited one
struct SubClass{}
impl SubClass  {
    fn foo2(&self) { println!("Foo 2!") }
    fn foo1(&self) { println!("Foo 1 from 'Subclass'")}
}
impl BaseTrait for SubClass {}

// A base 'class' that doesn't require any implementation
struct BaseClass{}
impl BaseTrait for BaseClass{}

fn main() {

    let s = SubClass{};
    s.foo0();
    s.foo1();
    s.foo2();

    let base = BaseClass{};
    base.foo0();
    base.foo1();

}