Chapter 6 / undo and redo

[Pierre Arnaud]

I’m following along and would like to point out that the discussion on undo/redo should definitely talk about immutable data structures, which provide much cleaner ways to handle undoability. If you didn’t yet read Eric Lippert’s ongoing book:

https://www.manning.com/books/fabulous-adventures-in-data-structures-and-algorithms

Envoyé de mon iPhone

[Philippe]

I’m following along and would like to point out that the discussion on undo/redo should definitely talk about immutable data structures, which provide much cleaner ways to handle undoability. If you didn’t yet read Eric Lippert’s ongoing book:

Yes and no.
• Yes, because this is exactly what I use, and it’s fantastic for undo/redo.
• No, because it only works cleanly if your application model is designed around immutable (persistent) structures. That’s a foundational architectural choice, usually invasive, not just a feature you add at the end.

 

Philippe