Tomoya Fujita

@ivanpauno > I also think that we should add the try/catch in our examples/demos. Just FYI, I think that I already did it with https://github.com/ros2/examples/pull/270.

i think that is feasible. one question, what is the difference between RCL_RET_IS_SHUTDOWN and RCL_RET_CONTEXT_INVALID? i was thinking RCL_RET_CONTEXT_INVALID is equal to RCL_RET_IS_SHUTDOWN. we should add specific state that tells...

@ivanpauno thanks for the clarification, we will take care of this.

i guess we got to the consensus.

> shutdown() call isn't blocking and you can't call init() right afterwards without being subject to a race or warnings like "logging already initialized". i think that we can, and...

> i have a parameter that should only accept the double value of 0.0 to 100.0, but what if i accidently set the parameter to be 101.0. i guess that...

@jacobperron > However, doing something like re-adapting to new pub/subs on the graph sounds difficult. > but it is not clear how to achieve this without recreating the publisher or...

@eboasson appreciate for your quick and informative comments. > I'd suggest recreating the publisher/subscription, make sure that the new one is discovered before deleting the old one and deal with...

@SteveMacenski I know this does not answer your request, but how about using `LoanedMessage` for intra-process communication? this cannot cover the requirement because of the performance or something else? just...

thanks for sharing thoughts. the problem is that QoS is provided by RMW implementation. since rclcpp intra-process communication is integrated only in rclcpp, it needs to be re-implemented into rclcpp....