Function deferred_conditional

include/boost/asio/deferred.hpp:492–497

  // Helper constructor.
  template <typename T, typename F>
  explicit deferred_conditional(bool b, T&& on_true, F&& on_false)
    : on_true_(static_cast<T&&>(on_true)),
      on_false_(static_cast<F&&>(on_false)),
      bool_(b)
  {
  }

  OnTrue on_true_;
  OnFalse on_false_;