func sortlist(){ //1 guard let appDelegate = UIApplication.shared.delegate as? AppDelegate else { return } let managedContext = appDelegate.persistentContainer.viewContext //2 let fetchRequest = NSFetchRequest<NSManagedObject>(entityName: "User") let sort = NSSortDescriptor(key: "date", ascending: false) fetchRequest.sortDescriptors = [sort] //3 do { let langugeCodes = try managedContext.fetch(fetchRequest) for result in langugeCodes as [NSManagedObject] { var username:String = result.value(forKey: "username")! as! String print("username==>",username) } } catch let error as NSError { print("Could not fetch. \(error), \(error.userInfo)") }
}