Method InsertPath

cpp/src/arrow/ipc/dictionary.cc:117–122

  }

  void InsertPath(const FieldPosition& pos) {
    const int64_t id = field_path_to_id.size();
    const auto pair = field_path_to_id.emplace(FieldPath(pos.path()), id);
    DCHECK(pair.second);  // was inserted
    ARROW_UNUSED(pair);
  }
};

DictionaryFieldMapper::DictionaryFieldMapper() : impl_(new Impl) {}