Class ByPath

cpp/src/arrow/filesystem/filesystem.h:106–114

Function object implementing less-than comparison and hashing by path, to support sorting infos, using them as keys, and other interactions with the STL.

  /// path, to support sorting infos, using them as keys, and other
  /// interactions with the STL.
  struct ByPath {
    bool operator()(const FileInfo& l, const FileInfo& r) const {
      return l.path() < r.path();
    }

    size_t operator()(const FileInfo& i) const {
      return std::hash<std::string>{}(i.path());
    }
  };

 protected:
  std::string path_;