Core Data API Weirdness

weirdApi.m

// constructor returns object which is useless till you do some other stuff
NSManagedObjectContext *context = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSPrivateQueueConcurrencyType];
// The context is 'initialized' but completely useless till this next line executes.
context.persistentStoreCoordinator = coordinator;

// returned object is immediately useful and API nicely encapsulated
NSManagedObjectContext *context = [coordinator newManagedObjectContextWithConcurrencyType:NSPrivateQueueConcurrencyType];