Serialize a vector<int> about rapidyaml HOT 3 CLOSED

int main(int argc, char *argv[])
{
  ryml::Tree tree1;
  ryml::NodeRef root = tree.rootref();
  root |= ryml::MAP; // mark root as a map
  root["int_1"]   << 42;
  root["list_1"]  << std::vector<int>{1, 2, 3};
  root["list_1"] |= c4::yml::_WIP_STYLE_FLOW_SL;

  std::string str_result = ryml::emitrs_yaml<std::string>(tree);
  std::cout << str_result << std::endl;

  return 0;
}

int_1: 42
list_1: [1,2,3]