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  1. #include <iostream>
  2. #include <tuple>
  3.  
  4. template<class T> struct Convert;
  5. template<> struct Convert<int>  {typedef bool Type;};
  6. template<> struct Convert<char> {typedef int Type;};
  7. template<> struct Convert<bool> {typedef char Type;};
  8.  
  9. template <typename... Args>
  10. struct convert;
  11.  
  12. template <typename... Args>
  13. struct convert<std::tuple<Args...>>
  14. {
  15.     typedef std::tuple<typename Convert<Args>::Type...> type;
  16. };
  17.  
  18. int main()
  19. {
  20.     static_assert(
  21.         std::is_same<
  22.             convert<std::tuple<int, char, bool>>::type,
  23.             std::tuple<bool, int, char>
  24.         >::value, ""
  25.     );
  26. }
Success #stdin #stdout 0s 2848KB
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https://ideone.com/zqWCYy
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
secret

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