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Let's say variable A and B hold instances of managed objects in the same managed object context. I need to make sure that they are associated with the same "record" in the persistent store. The section on Faulting and Uniquing in the Core Data Programming Guide says that:
Core Data ensures that—in a given managed object context—an entry in a persistent store is associated with only one managed object.
From this, it seems that a pointer comparison is sufficient for my purpose. Or does it ever make sense to use isEqual: to compare managed objects in the same context?