Method TestToString_stringstream

be/src/benchmarks/date-benchmark.cc:192–206

  }

  void TestToString_stringstream(int batch_size) {
    for (int i = 0; i < batch_size; ++i) {
      int n = date_.size();
      for (int j = 0; j < n; ++j) {
        // Old implementation before IMPALA-12111.
        stringstream ss;
        int year, month, day;
        if (date_[j].ToYearMonthDay(&year, &month, &day)) {
          ss << std::setfill('0') << setw(4) << year << "-" << setw(2) << month << "-"
            << setw(2) << day;
        }
        to_string_old_result_[j] = ss.str();
      }
    }
  }

  bool CheckResults() {
    DCHECK(to_ymd_result_.size() == cctz_to_ymd_result_.size());