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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. template<typename T>   // primary template
  5. struct is_int : std::false_type
  6. {};
  7.  
  8. template<>  // explicit specialization for T = int
  9. struct is_int<int> : std::true_type
  10. {};
  11.  
  12. int main() {
  13.     std::cout << is_int<char>::value << std::endl;  // prints 0 (false)
  14.     std::cout << is_int<int>::value << std::endl;   // prints 1 (true)
  15.     return 0;
  16. }
Success #stdin #stdout 0.01s 5292KB
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https://ideone.com/jDLWeT
language:
C++14 (gcc 8.3)
created:
4 hours ago
visibility:
public

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