Is it necessary to using Callback function when I subscribe?
Hi guys! I'm begginer studying ros at this moment. When I do tutorials that make talker and listener (Publisher & Subscriber), I really wonder weather it is necessary to using callback function in subscriber. If I dosen't use callback function, I could get the message? Or If I can use it, How to I get the message?
Thanks guys! Have a good day also.
Never seen such a possibility and I think the fact that ros works heavily with callbacks is one of the good things about ros. Why would you avoid callbacks?
I just curious about it for understanding ros system. Thanks a lot comment to me!