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how i know subsciber is started?

asked 2022-02-16 13:02:46 -0500

muratkoc503 gravatar image

i want to use, if subscriber spin first time, i start my code? So, how i know subsciber is started at first time? Or, how i use similar idea, consept?

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answered 2022-02-17 07:00:59 -0500

osilva gravatar image

Please refer to prior answer is a good explanation how subscriber works.

Also, I suggest you read the ROS Concepts Computational Graph Level: http://wiki.ros.org/ROS/Concepts

And there is a good article by Nicolo Valigi about concurrency in ROS1 and ROS2 worth reading: https://nicolovaligi.com/articles/con...

Hope this helps you understand how it all ties together.

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Asked: 2022-02-16 13:02:46 -0500

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Last updated: Feb 17 '22