Function main

example/cpp14/deferred/deferred_5.cpp:45–66

}

int main()
{
  boost::asio::io_context ctx;

  boost::asio::steady_timer timer(ctx);
  timer.expires_after(std::chrono::seconds(1));

  async_wait_twice(
      timer,
      [](int result)
      {
        std::cout << "result is " << result << "\n";
      }
    );

  // Uncomment the following line to trigger an error in async_wait_twice.
  //timer.cancel();

  ctx.run();

  return 0;
}