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seeking clarity on ros::SingleSubscriberPublisher class

I recently came across 'ros::SingleSubscriberPubliser' class. The documentation describes it as 'Allows publication of a message to a single subscriber. Only available inside subscriber connection callbacks'.

What does 'subscriber connection callbacks' mean?

Also, when does it make sense to use this class?

Asked by skpro19 on 2021-04-06 14:20:48 UTC

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