On Sep 3, 2009, at 11:32 AM, Alexander Cohen wrote:
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?
@dynamic properties are assigned implementations on the fly at runtime. NSManagedObject's implementation of the setter method includes setting the dirty flag, I suppose.
So actually my "no" wasn't strictly true. You can track changes to arbitrary dynamic properties, including those defined in subclasses, because they all funnel through a common implementation.
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