what I meant is that ros::message_traits::Definition< Type >::value() return a __const char*__ But this static C string contains the information in a easy to parse format that any language can easily parse. Something like this https://gist.github.com/facontidavide/4ade0fb2d3cd48a64eb47c5c1a927de6 --- [Visit Topic](https://discourse.ros.org/t/ros2-anything-equivalent-to-topic-tools-shapeshifter/3393/9) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: