Anyone know of an existing function or property that provides a count of the records in a core data entity that I'm missing in the docs?
Any help appreciated Thanks // :)
+1
A:
I believe the best way to accomplish this is through NSManagedObjectContext's countForFetchRequest:error:
It works just like a regular fetch request, except that it only returns the count and presumably could therefore be more optimized.
Matt B.
2010-07-06 06:58:12
It is definitely more optimized.
Marcus S. Zarra
2010-07-06 14:14:41
@Marcus: Yeah, the reason I hedged there is simply because I haven't used all the backing stores and it's possible that there'd be one where there's no shortcut available for the count.
Matt B.
2010-07-06 14:52:14
Count is always more efficient even on an xml store (the least performant store) because it is not constructing objects as a result of the fetch.
Marcus S. Zarra
2010-07-06 15:52:00