nsundomanager
There are 4 repositories under nsundomanager topic.
hitendradeveloper/Simple-Undo-Redo-Example
implementation of UndoManager in Swift5 Xcode 10.2
rohith12/DrawingShapes
Draw shapes using bezierpath. You could move the shapes which were created. Long press to delete shapes. Also, you could undo adding, deletion and movement
allenu/SimpleLists
macOS app that illustrates a few basic concepts
RockfordWei/Simplest-Undo
Simplest Undo / Redo Example for NSUndoManager