Method CountLine

include/LightGBM/utils/text_reader.h:231–235

  }

  INDEX_T CountLine() {
    return ReadAllAndProcess(
      [=](INDEX_T, const char*, size_t) {
    });
  }

  INDEX_T ReadAllAndProcessParallelWithFilter(const std::function<void(INDEX_T, const std::vector<std::string>&)>& process_fun, const std::function<bool(INDEX_T, INDEX_T)>& filter_fun) {
    last_line_ = "";