std::string source = "{{ title }}";
    jinja2::Template tpl;

    const int N = 100000;
    auto start_time = std::chrono::high_resolution_clock::now();

    for (int i = 0; i < N; i++)
    {

        tpl.Load(source);


    }

    ValuesMap data;
    data["title"] = "My title";
    data["t"] = "My List";
    std::string result = tpl.RenderAsString(data).value();;

    auto end_time = std::chrono::high_resolution_clock::now();
    auto time_span = std::chrono::duration_cast<std::chrono::milliseconds>(end_time - start_time);
    std::cout << "Loop time：" << time_span.count() << "milliseconds" << std::endl;


  std::cout << result << std::endl;

  return 0;