这里列出了所有类成员，并附带类的详细说明:

- r -

• reasonCode : MQTTAsync_disconnectOptions , MQTTAsync_failureData5 , MQTTAsync_successData5 , MQTTResponse
• reasonCodeCount : MQTTAsync_successData5 , MQTTResponse
• reasonCodes : MQTTAsync_successData5 , MQTTResponse
• reliable : MQTTClient_connectOptions
• restart : CommandGroup
• restoreMessages : MQTTAsync_createOptions
• retainAsPublished : MQTTSubscribe_options
• retained : MQTTAsync_message , MQTTAsync_willOptions , MQTTClient_message , MQTTClient_willOptions
• retainHandling : MQTTSubscribe_options
• retryInterval : MQTTAsync_connectOptions , MQTTClient_connectOptions
• returned : MQTTClient_connectOptions
• right_margin : lib_fbinfo
• rotate : uvc_fd , uvc_struct_v4l_args