Tags / nspredicate
Understanding Duplicate Objects in Core Data: Strategies for Dealing with NSManagedObjectID Conflicts
Using NSPredicate with Nested Arrays in iOS: Advanced Filtering Techniques
Fetching albums with songs of a specific tag name: How to use NSPredicate with Double-to-One Relationships
Understanding the Error in Sorting a UITableView: Avoiding "Bad Receiver Type Void" When Filtering and Sorting Data Inside tableView:cellForRowAtIndexPath