Class KeyHash

tensorflow/core/framework/resource_mgr.h:226–230

 private:
  typedef std::pair<uint64, string> Key;
  struct KeyHash {
    std::size_t operator()(const Key& k) const {
      return Hash64(k.second.data(), k.second.size(), k.first);
    }
  };
  struct KeyEqual {
    bool operator()(const Key& x, const Key& y) const {
      return (x.second == y.second) && (x.first == y.first);