Function Pointer Wrapper

template <class>
class FnPtr;

template <class Return, class... Args>
class FnPtr<auto(Args...) -> Return> {
public:
    using Type = Return(*)(Args...);
    const Type ptr;

    FnPtr(Type ptrIn) : ptr{ ptrIn } {
    }

    Return operator()(Args... args) const {
        return this->ptr(args);
    }
};