On 15/01/2011, at 4:50 AM, Uli Kusterer wrote:

> Guys, why is sorting like this even an undo-able action in your apps ... ? 
> That's pointless.


Not always pointless. Probably mostly. Depends on the app.

Personally I have never bothered to make sorting undoable - I was thinking 
hypothetically. However I have implemented the caching of sorting in the manner 
described (though more as a controller-level implementation than a model one) 
because I've found that sorting thousands of items when supplying them to e.g. 
a table view or icon view to be a major performance drag.

--Graham


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