Re: NSUndoManager retain/release of arguments - ad infinitum
Re: NSUndoManager retain/release of arguments - ad infinitum
- Subject: Re: NSUndoManager retain/release of arguments - ad infinitum
- From: "Sean McBride" <email@hidden>
- Date: Tue, 11 Jan 2011 11:35:31 -0500
- Organization: Rogue Research Inc.
On Mon, 10 Jan 2011 22:35:28 -0800, Jerry Krinock said:
>Aside: Reading this thread really makes one appreciate Core Data.
>
>I've written a Core Data app which can Undo Sort. The sortable objects
>are the 'many' members of to-many relationships. Each one has an
>'index' parameter, which is re-set during sorting. When you 'Undo
>Sort', all of the 'index' parameters get set back to their original
>values. There is no code to 'Undo Sort' or 'Redo Sort'. It really is
>"for free" (well, after you've tamed Core Data's Undo Groupings).
>
>I should not discourage John from doing it the hard way first, though.
>The usual warning against Cocoa beginners diving into Core Data applies :)
I agree that Core Data is helpful here. But it's not a panacea. For
one, there doesn't seem to be a nice way to get the Undo menu item to
say descriptive things like "Undo Typing", "Redo Size Change", etc.
When doing things 'the hard way' that part's actually easier.
--
____________________________________________________________
Sean McBride, B. Eng email@hidden
Rogue Research www.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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