template< typename R, typename ... Args >
struct cool_object_t {
    using fn_type = std::function< R (Args...) >;
    fn_type func;
    cool_object_t (fn_type fn) : func (fn) {}
};

template< typename R, typename ... Args >
auto cool_object (std::function< R (Args...) > t) {
    return cool_object_t<R, Args...> (t);
}