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  1. #include <iostream>
  2. #include <vector>
  3. #include <iterator>
  4. #include <type_traits>
  5.  
  6. template<typename... Args>
  7. using void_t = void;
  8.  
  9. template<typename T, typename = void>
  10. 		struct is_iterator : std::false_type {
  11.  
  12. 		};
  13.  
  14. 		template<typename T>
  15. 		struct is_iterator<T, void_t<typename std::iterator_traits<T>::value_type>> : std::true_type {
  16.  
  17. 		};
  18.  
  19. int main() {
  20. 	std::cout << is_iterator<int*>::value << is_iterator<std::back_insert_iterator<std::vector<int>>>::value;
  21. }
Success #stdin #stdout 0s 3096KB
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stdin 
Standard input is empty
stdout 
11
https://ideone.com/gqPG7o
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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