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  1. #include <iostream>
  2.  
  3. template<typename T, T *ptr>
  4. struct X
  5. {
  6. 	void f() { std::cout << "primary" << std::endl; }
  7. };
  8.  
  9. template<>
  10. struct X<std::nullptr_t, nullptr>
  11. {
  12. 	void f() { std::cout << "specialization" << std::endl; }
  13. };
  14.  
  15.  
  16. int i = 10;
  17. int main() {
  18.  
  19. 	X<int, &i>().f();
  20. 	X<std::nullptr_t, nullptr>().f();
  21. 	return 0;
  22. }
Success #stdin #stdout 0s 3340KB
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Standard input is empty
stdout
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primary
specialization
https://ideone.com/XRjtXk
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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