[quote="facontidavide, post:9, topic:3393"] what I meant is that ros::message_traits::Definition< Type >::value() return a const char* [/quote] I think exposing this information (even a preprocessed version to actually store e.g. yaml) through the ament resource index would be better in order to make it available to any language. --- [Visit Topic](https://discourse.ros.org/t/ros2-anything-equivalent-to-topic-tools-shapeshifter/3393/10) 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: