template<class BaseLhs, class BaseRhs, class SomeLhs, class SomeRhs, typename ResultType, class CastLhs, class CastRhs, class Fun, bool SwapArgs>
class Loki::Private::FunctorDispatcherHelper< BaseLhs, BaseRhs, SomeLhs, SomeRhs, ResultType, CastLhs, CastRhs, Fun, SwapArgs >