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c++ custom hash

Creepy Cormorant answered on April 16, 2022 Popularity 6/10 Helpfulness 3/10

answer c++ custom hash

c++ custom hash

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namespace std {

  template <>
  struct hash<Key>
  {
    std::size_t operator()(const Key& k) const
    {
      using std::size_t;
      using std::hash;
      using std::string;

      // Compute individual hash values for first,
      // second and third and combine them using XOR
      // and bit shifting:

      return ((hash<string>()(k.first)
               ^ (hash<string>()(k.second) << 1)) >> 1)
               ^ (hash<int>()(k.third) << 1);
    }
  };

}

Popularity 6/10 Helpfulness 3/10 Language cpp

Source: stackoverflow.com

Tags: c++ hash

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