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how to store a ConstPtr msg into a vector?

asked 2020-02-25 10:00:09 -0500

Zep gravatar image

Hi, I am a ROS and C++ beginner. My aim is to merge frontiers of multiple robot exploration based on frontier exploration. I've tried several ways to achieve that, but the easiest one is to merge frontiers pose together, and the problem here is about how to create a vector to store many robot/frontiers topic output msgs. Those msgs are ConstPtr, so it cannot be directly stored into vector, otherwise some errors happened in the terminal. Could someone have any suggestions? Thanks a lot.

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answered 2020-02-26 02:43:50 -0500

mgruhler gravatar image

You need to create a copy of the msg the pointer is pointing do. You can do that by dereferencing it. my_vector.push_back(*msg)

I guess it would make sense for you to look up a bit on C++ programming, especially with regards to pointers. Also related is #q212857.

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Asked: 2020-02-25 10:00:09 -0500

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Last updated: Feb 26