attach await_ready await_suspend cast_ret_value convert_to detach forward_to forward_to future future future get get_promise has_exception has_value is_awaited is_deferred is_in_progress is_pending operator cast_ret_value operator! operator<< operator>> requires ret_value set_callback setDeferredEvaluation start startDeferredEvaluation then unset_callback wait ~future

has_value() template<typename T > bool coro::future< T >::has_value ( ) const inline Determines, whether future has a value. Return values true future has value or exception false future has no value nor exception Note future must be resolved otherwise undefined (use wait() ) Definition at line 779 of file future.h.