Function STDEXEC_CATCH

examples/hello_coro.cpp:53–56

    std::cout << "The answer is " << i.value() << '\n';
  }
  STDEXEC_CATCH(std::exception & e)
  {
    std::cerr << "error: " << e.what() << '\n';
  }
  STDEXEC_CATCH_ALL
  {
    std::cerr << "unknown error\n";