tuple-de-voider.cpp

#include <iostream>
#include <tuple>
using namespace std;
 
 
template<class Tuple, class... Types>
struct Devoider;
 
template<class Tuple>
struct Devoider<Tuple> {
	using tuple_type = Tuple;
};
 
template<class... TupleTypes, class Head, class... Tail>
struct Devoider<tuple<TupleTypes...>, Head, Tail...> : public Devoider<tuple<TupleTypes..., Head>, Tail...> {};
 
template<class... TupleTypes, class... Tail>
struct Devoider<tuple<TupleTypes...>, void, Tail...> : public Devoider<tuple<TupleTypes...>, Tail...> {};
 
int main() {
 
	Devoider<tuple<>, int, int, void, const char*>::tuple_type t{1,2,"hello"};
 
	cout << get<0>(t) << " " << get<1>(t) << " " << get<2>(t) << endl;
	return 0;
}