Time Travel for Your State: Undo/Redo - with...

In Part 1, we discussed the snapshot pattern with past/present/future arrays for undo and redo. If you haven't checked it out, you can do so here. Some background In a personal project I've been working on, I spent the past week trying to find a clean, generic way to implement undo/redo without ending up with a bunch of hardcoded states. I wanted something that could manage itself instead of turning into a mess over time. The first approach with past, present, and future arrays? Elegant. Clean.