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  1. #include <unordered_set>
  2.  
  3. struct A{};
  4.  
  5. namespace std { 
  6.   template<> 
  7.   struct hash<A> { 
  8.     size_t operator()(const A& mystruct) const {
  9.       return 0; //hash here
  10.     }
  11.   };
  12. }
  13.  
  14. int main() { 
  15.     std::unordered_set<A> a;
  16. }
Success #stdin #stdout 0s 3012KB
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https://ideone.com/p8J7Pr
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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