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Questions - ros

error: cannot bind non-const lvalue reference of type ... to an rvalue of type ... when initializing an SimpleActionClient obj in .h file

I recently developed a ros pkg, I want to initialize an action client object as a member var in head file, so that I can use it in different member functions. Here is the code in .h file: actionli...
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zhixin

c++

ros

Votes: 0

Answers: 0

How to define optional arguments in ROS service request

I want to define optional arguments in my ROS service request, the .srv file looks like this: abb_rapid_msgs/RobTarget pickpoint abb_rapid_msgs/RobTarget placepoint bool leftarm # Optional Parameters ...
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Bilal

python

ros

rospy

Votes: 0

Answers: 1

Latest Answer

Unfortunately there is no support for optional fields in either service or message files; it has been proposed a couple of times, though. Instead, you can add another field to your srv to work as a bi...
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BTables

Is ROS installed by default in Arago?

I am trying to learn about Arago, still a beginner. Reading this question gives me the impression that ROS is by default installed in the default Arago image. Is this understanding correct? Is ROS (o...
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KansaiRobot

yocto

ros

arago

Votes: 0

Answers: 0

ROS cpp callback without message type

I want to create a ROS node that is able to listen to a topic without knowing its message type. In python, this is possible as can be seen here: https://schulz-m.github.io/2016/07/18/rospy-subscribe-t...
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J.P.S.

c++

callback

message

ros

Votes: 0

Answers: 1

Latest Answer

By nature, this sort of problem is very pythonic and much harder to work around in c++. That being said, there is one (sort of) solution out there already. Take a look at the ros_msg_parser. The synta...
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