Do you really need the entire range of an NSUInteger? On iOS that’s an unsigned 32 bit value, which can get very large. It will find into a signed 64 bit. But you probably don’t need that much precision anyway. The maximum for a uint32_t is UINT32_MAX which is 4,294,967,295 (4 billion). If you increment … Read more
I’ve now found out that this is quite simple – once you know where to look. In my AppDelegate I set-up the NSPersistentStoreCoordinator – and you need to add some options to this to tell it to handle auto-migrate: NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil]; NSError *error; _persistentStoreCoordinator = … Read more
Click on the top level .xcdatamodelId file (the one that has the many versions of .xcdatamodel under it as children). Make sure the Utilities sidepane is visible (if not click on the third “View” button at the top right of the window). In the Utilities sidepane select the File inspector (little paper icon on the … Read more