Abrar Rahman Protyasha

Thanks for opening this PR! I have some minimal progress in #4 that I can fold into this too, do you mind if I push commits to this branch? About...

I wonder whether it's because I didn't export things correctly on the `trac_ik_lib` end, but that would manifest as a problem earlier through `trac_ik_examples` anyway. Any clue what's happening?

Apologies for the lack of activity here. #### Namespacing Wasn't it always like this though? As in, even in the ROS 1 package, the namespace was still like this no?...

+1 for a function like this, but if I understand correctly, ros2/rcl#907 looks for publisher/subscriber counts on a named topic, right? Which is close enough in spirit, but I guess...

> maybe in `rcl` and then wrap it in `rclpy` and `rclcpp` I think that's the way to go because I see utility for all of the `wait_for_*` methods in...

> How should I add a test case? Can you write a code snippet that uses the `tf2_ros` interface in a way that throws this timer handle exception without the...

@z80020100 there are linter errors in the Rpr job, can you address them please? https://build.ros2.org/job/Rpr__geometry2__ubuntu_focal_amd64/372/testReport/

@swarajpeppermint thanks for flagging this. Since I’m not a maintainer I can’t actually merge the code, but I’m tagging @clalancette who can hopefully get this PR across the finish line

> wondering whether adding PoseWithCovariance without timestamp makes sense? You don't necessarily need headers for all types of applications. For example, I can think of a planar path planner that...

> Isn't it actually misleading to have `doTransform` because two `PoseStamped` that have the same coordinates but different frames, i.e. that are supposed to express two different poses, are transformed...