symmetric_pair.h

Go to the documentation of this file.

#ifndef LIBLEVENSHTEIN_DISTANCE_SYMMETRIC_IMMUTABLE_PAIR_H
#define LIBLEVENSHTEIN_DISTANCE_SYMMETRIC_IMMUTABLE_PAIR_H
 
#include <iostream>
#include <string>
 
namespace liblevenshtein::distance {
 
class SymmetricPair {
public:
 
  SymmetricPair(const std::string &u, const std::string &v);
 
  auto operator==(const SymmetricPair &other) const -> bool;
 
  friend class std::hash<SymmetricPair>;
 
  friend auto operator<<(std::ostream &out, const SymmetricPair &pair)
      -> std::ostream &;
 
private:
 
  std::string first;
 
  std::string second;
};
 
} // namespace liblevenshtein::distance
 
namespace std {
 
template <>
struct hash<liblevenshtein::distance::SymmetricPair> {
 
  auto operator()(const liblevenshtein::distance::SymmetricPair &pair) const
    -> std::size_t;
};
 
} // namespace std
 
#endif // __LIBLEVENSHTEIN__COLLECTION__SYMMETRIC_IMMUTABLE_PAIR_H__