Undo function in complex data structure.

[nigelwright7557]

I have been asked by a buyer of my software to add an undo function.

Seems all I have to do save a copy of all my data structures each time a change is made.

Then stack them up so I can have say a 5 level undo.

My data could be many megabytes so this means the hard drive will be thrashed by all this saving.

Is there a simple more efficient way around providing an undo function.



n.Wright

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