Comment by benschulz

Sorry, based on the replies I'm getting I did not make myself clear. I only want to use Either in cases like the following.

    fn some_func() -> impl SomeTrait {
        if some_condition {
            Either::Left(a)
        } else {
            Either::Right(b)
        }
    }

Both a and b will implement SomeTrait which is all callers care about. However, because they're structurally different they must be wrapped in an Either that delegates all methods from SomeTrait to a or b respectively.