Assign geometry_msgs::position in one line

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HI,

I am struggling with a really easy problem. I declared :

geometry_msgs::Pose pose_msg;

I am trying to assign x y z coordinates in one line instead of doing:

pose_msg.position.x = 0.0;
pose_msg.position.y = 0.0;
pose_msg.position.z = 0.0;

I would like to do something like:

pose_msg.position = (0.0,0.0,0.0)

Sorry if the question has been already asked but for me, it was hard to find an answer online.

Thanks in advance for your help