Re: watch changes to any properties on an object
Re: watch changes to any properties on an object
- Subject: Re: watch changes to any properties on an object
- From: Alexander Cohen <email@hidden>
- Date: Thu, 3 Sep 2009 14:32:44 -0400
Ok, thats what i thought. But just for implementation ideas, how does
CoreData know when one of it's @dynamic properties is changed? It must
set some sort of flag somewhere in order to know what to write out
when it needs to save. How does it handle that?
thx
AC
On Sep 3, 2009, at 12:27 PM, Jens Alfke wrote:
On Sep 3, 2009, at 8:24 AM, Alexander Cohen wrote:
I have a base object that needs to know when any of it's properties
or subclasses properties have changed and set a dirty flag on
itself. Is there a way to do this?
No, not in general. Key-value observing requires knowing the exact
property name(s) in advance. You'll need to set the 'dirty' flag
manually.
—Jens
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