Function map

cpp/src/arrow/type.cc:3218–3222

}

std::shared_ptr<DataType> map(std::shared_ptr<DataType> key_type,
                              std::shared_ptr<DataType> item_type, bool keys_sorted) {
  return std::make_shared<MapType>(std::move(key_type), std::move(item_type),
                                   keys_sorted);
}

std::shared_ptr<DataType> map(std::shared_ptr<DataType> key_type,
                              std::shared_ptr<Field> item_field, bool keys_sorted) {