# Error code E0576

An associated item wasn't found in the given type.

Erroneous code example:

    #![allow(unused)]
    fn main() {
    trait Hello {
        type Who;

        fn hello() -> <Self as Hello>::You; // error!
    }
    }

In this example, we tried to use the nonexistent associated type `You` of the `Hello` trait. To fix this error, use an existing associated type:

    #![allow(unused)]
    fn main() {
    trait Hello {
        type Who;

        fn hello() -> <Self as Hello>::Who; // ok!
    }
    }