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  1. #include <map>
  2. #include <functional>
  3.  
  4. template <typename T>
  5. 	static bool indirectLess(const T* a, const T* b)
  6. {
  7. 	if (a==b) 
  8. 		return false;
  9. 	if (!a)
  10. 		return true;
  11. 	if (!b)
  12. 		return false;
  13. 	return std::less<T>()(*a, *b);
  14. }
  15.  
  16. typedef int T;
  17. typedef int V;
  18.  
  19. int main()
  20. {
  21. 	typedef bool (*cmp_t)(const T*, const T*);
  22.  
  23. 	std::map<T*,V,cmp_t> tsMap(&indirectLess<T>);
  24. }
  25.  
  26.  
Success #stdin #stdout 0s 2720KB
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https://ideone.com/TpgLw
language:
C++ (gcc 8.3)
created:
14 years ago
visibility:
public

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