mosaic6 questions

• Objective-C method 'controller:didChangeObject:atIndexPath:forChangeType:newIndexPath
• Cannot call value of non-function type '((success: Bool, error: NSError?) throws -> Void)?)
• Cannot convert value of type 'NSRange' (aka '_NSRange') to expected type 'Range<Index>'(aka 'Range<String.CharacterView.Index>')
• Initializer for conditional binding must have Optional type, not 'String'

mosaic6 answers