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  1. #include <tuple>
  2. #include <iostream>
  3.  
  4. struct Fixture
  5. {
  6.     template <typename T>
  7.     struct Unpack
  8.     {
  9.         static T value;
  10.     };
  11.  
  12.     template <typename... T>
  13.     struct Y
  14.     {
  15.         Y()
  16.         :
  17.             tup(Unpack<T>::value...)
  18.         {
  19.         }
  20.  
  21.         std::tuple<T...> tup;
  22.     };
  23.  
  24.     Y<int, double, int> y;
  25. };
  26.  
  27. template<typename T>
  28. T Fixture::Unpack<T>::value{};
  29.  
  30. int main() {
  31. 	std::cin >> Fixture::Unpack<int>::value >> Fixture::Unpack<double>::value;
  32. 	Fixture f;
  33. 	std::cout << std::get<0>(f.y.tup) << " " << std::get<1>(f.y.tup);
  34. }
Success #stdin #stdout 0s 3232KB
comments (?)
stdin 
42 3.1415
stdout 
42 3.1415
https://ideone.com/kRgYEL
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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