`NSUndoManager` is a general-purpose recorder of operations for undo and redo.
I have an NSManagedObject called appointment that I edit the attributes of. If I the user presses cancel I want …
objective-c core-data ios5 nsundomanagerHow do I use UndoManager (previously NSUndoManager) in Swift? Here's an Objective-C example I've tried to replicate: [[undoManager prepareWithInvocationTarget:self] …
ios swift nsundomanager