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May 16, 2016 20:26
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| let remoteItems = localPrimaryKey | |
| let localRelationship = self.valueForKey(relationship.name) | |
| let localItems = localRelationship?.valueForKey(entity.sync_localPrimaryKey()) as? NSArray ?? NSArray() | |
| let intersection = NSMutableSet(array: remoteItems as [AnyObject]) | |
| intersection.intersectSet(Set(arrayLiteral: localItems)) | |
| let updatedItems = intersection.allObjects | |
| let deletedItems = localItems.mutableCopy() | |
| deletedItems.removeObjectsInArray(remoteItems as [AnyObject]) | |
| let insertedItems = remoteItems.mutableCopy() | |
| insertedItems.removeObjectsInArray(localItems as [AnyObject]) |
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