On Sat, 1 Dec 2012 09:49:23 +1100, Graham Cox said:

>> Could be.  But Apple could have provided a NSPersistentDocument2 class
>that people could opt into.  But they haven't.
>
>Have you noticed that they never do this though? It must be some sort of
>policy because there are numerous examples where a fork would seem to
>make more sense than adding more and more features to a class.
>NSTableView comes to mind among others.

Sorta... I mean, they'd never use a stupid name like NSPersistentDocument2.  
But it's not so different from entirely deprecating NSMovieView and calling it 
QTMovieView.  They sometimes do something else, like a big fat mode switch like 
NSDateFormatterBehavior10_4.

Cheers,

-- 
____________________________________________________________
Sean McBride, B. Eng                 s...@rogue-research.com
Rogue Research                        www.rogue-research.com 
Mac Software Developer              Montréal, Québec, Canada



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