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  1. #include <iostream>
  2. #include <string>
  3. #include <vector>
  4. #include <array>
  5. #include <type_traits>
  6.  
  7.     template<typename T>
  8. 	struct is_container
  9. 	{
  10. 		static const bool value = false;
  11. 	};
  12.  
  13. 	template<typename T , size_t N>
  14. 	struct is_container<std::array<T , N>>
  15. 	{
  16. 		static const bool value = true;
  17. 	};
  18.  
  19. 	template<typename T , typename Alloc>
  20. 	struct is_container<std::vector<T , Alloc>>
  21. 	{
  22. 		static const bool value = true;
  23. 	};
  24.  
  25. 	template<typename T , typename Enable = void>
  26. 	struct is_container_sequence
  27. 	{
  28. 		static const bool value = false;
  29. 	};
  30.  
  31.     template<typename T>
  32. 	struct is_container_sequence<T , typename std::enable_if<is_container<T>::value>::type>
  33. 	{
  34. 		static const bool value = true;
  35. 	};
  36.  
  37. int main()
  38. {
  39.     std::vector<int> vec1;
  40.     std::vector<std::string> vec2;
  41.  
  42.     std::cout << is_container_sequence<std::vector<int>>::value
  43.     	<< is_container_sequence<std::vector<std::string>>::value
  44.     	<< std::is_pod<int>::value;
  45. }
  46.  
Success #stdin #stdout 0s 3340KB
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https://ideone.com/mI7eg9
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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