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      1 #ifndef NOTCONSTRUCTIBLE_H
      2 #define NOTCONSTRUCTIBLE_H
      3 
      4 #include <functional>
      5 
      6 class NotConstructible
      7 {
      8     NotConstructible(const NotConstructible&);
      9     NotConstructible& operator=(const NotConstructible&);
     10 public:
     11 };
     12 
     13 inline
     14 bool
     15 operator==(const NotConstructible&, const NotConstructible&)
     16 {return true;}
     17 
     18 namespace std
     19 {
     20 
     21 template <>
     22 struct hash<NotConstructible>
     23     : public std::unary_function<NotConstructible, std::size_t>
     24 {
     25     std::size_t operator()(const NotConstructible&) const {return 0;}
     26 };
     27 
     28 }
     29 
     30 #endif  // NOTCONSTRUCTIBLE_H
     31