Functions for creating and accessing object-like lists in OpenSCAD
Until we get packaging up and running here, the simpliest way to install this is to download the most recent zip from Github, and copy the object_common_functions.scad file into your OpenSCAD library directory.
You'll need the most-excellent BOSL2 framework to get this working; see https://github.com/revarbat/BOSL2 for instructions on how to download and incorporate it.
A lot of this project might be generously considered "works for me", and I'm entirely not sure what'll happen when you use it for you. That's ok! If something doesn't seem to work right, I think a GitHub issue is perhaps the best way to let me know. I'll try to respond as quickly as life permits.