Undo/Redo implementation

Question

Give me some thoughts how to implement undo/redo functionality - like we have in text editors. What algorithms should I use and what I may read. thanks.

Answer 1

You may study an example of an existing undo/redo framework, the first Google hit is on codeplex (for .NET). I don't know if that is better or worse than any other framework, there are lots of them.

If your goal is to have undo/redo functionality in your application you might as well just pick an existing framework that looks suitable to your kind of application.
If you want to learn how to build your own undo/redo you can download the source code and have a look at both patterns and the details how to wire things up.