This simple example shows how you can use KeyValueObserving, Bindings and Notification in Objective-C.

Each example can be seen on a separate branch. The master branch contains the basic project.

• There are separate branches on using Bindings programmatically and through the Interface Builder.
• Slides are available online.
• Video recordings of the talk can be seen online.

The screenshot shows the user interface of the application.

The following configuration is used for the project.

• Objective-C
• Xcode 4.2 64-bit
• Mac OS X 10.7 SDK
• x86_64
• Debug configuration
• Objective-C Garbage Collection: Required [-fobjc-gc-only]