Most of the DDS vendors support the idea of a primary key in their message structures. Have we discussed enabling that from the ROS msg format? What are the issues here? A "key" keyword seems fairly straightforward. --- [Visit Topic](https://discourse.ros.org/t/keys-in-msg/1942/1) 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: