NSPredicate - filtering values based on a BOOLEAN stored value

Question

I have a core data model object called Entry. In this I have an attribute IsFavorite.

I would like to use an NSPredicate to filter the results of my NSFetchedResultsCont

Answer 1

swift 3 version worked great for me:

 let predicate = NSPredicate(format: "isFriend == %@" ,NSNumber(booleanLiteral: false))

following @scipilot answer the bool shouldn't be an optional. thanks for that!