Question

Can someone please explain what happens to the pointers to the NSManagedObjects after the object is deleted and the context is saved? How should I set them up so that they get set to nil automatically?

Answer 1

Well, it’s quite simple.

[managedObjectContext deleteObject:managedObject];
[managedObjectContext save:error];
managedObject = nil;

If you are afraid of memory leaks when deleting lots of objects, just use fast enumeration. This is pretty much guaranteed to clean up behind itself:

for (NSManagedObject *obj in fetchedObjects) {
    [managedObjectContext deleteObject:obj];
}
[managedObjectContext save:error];