Function main

example/cpp14/deferred/deferred_1.cpp:16–35

using boost::asio::deferred;

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

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

  auto deferred_op = timer.async_wait(deferred);

  std::move(deferred_op)(
      [](boost::system::error_code ec)
      {
        std::cout << "timer wait finished: " << ec.message() << "\n";
      }
    );

  ctx.run();

  return 0;
}