Archive for February 23rd, 2009
Command Pattern – Undo and Command Stack
As requested, here’s a demo of the command pattern in action. This example shows how to use the Command Pattern to undo an action. Please watch the video in the previous post before browsing through this source.
Try to focus on how the commands are all added into the command stack, then you’ll see how the stack can be used for undoing, redoing, logging actions, queuing actions, and all sorts of other useful stuff
Click on the green, red, and blue boxes to create new circles. Click on the black box to undo.

source
Search
Recommended Books
Speaking at FITC Toronto
Recent Posts
- Moving to johnlindquist.com
- AsyncCommand with Robotlegs, Signals, Flight, MinimalComps
- Search Widget – Robotlegs, Signals, Flight, Minimal Comps, Yahoo Astra
- FDT Super Awesome March Deal
- haXe Tutorial
- AS3 Signals Tutorial
- Preferred Video Tutorial Resolution?
- TweenMax – Tweening a timeline (Advanced Tweening)
- Robotlegs + Flight + Union Platform
- Back in the saddle
- Eclipse Theme Designer Preview
- RobotLegs Hello World Video Tutorial
- 10 Things Every Senior Flash Developer Should Know
- Efflex – 3D Effects for Flex
- MorphController – Mighty Morphing Papervision3D
Recent Comments
- شقق للبيع في الاردن on Moving to johnlindquist.com
- Annakhan006 on Augmented Reality – Recursive Webcam
- Yarout on Augmented Reality – Recursive Webcam
- Vivon on about
- Josh @ Wall Stickers on Moving to johnlindquist.com
- list of lpn courses on SpringCamera3D and Driving a Car
- rn to bsn in montgomery al on archive
- PowerPoint Recovery on Eclipse Theme Designer Preview
- cheat mw3 on Test if a plane is within the view of the camera (aka testing if culled)
- Goa Hotels on Looking around the inside of a Sphere
Categories
Archives
Preferred Video Tutorial Resolution
- 1024x768 (53%, 85 Votes)
- 1280x1024 (15%, 24 Votes)
- 1920x1080 (15%, 24 Votes)
- 800x600 (13%, 20 Votes)
- 480x320 (4%, 6 Votes)
- 640x480 (0%, 2 Votes)
Total Voters: 160

