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Cocoa Programming for OS X: The Big Nerd Ranch Guide by Aaron Hillegass, Adam Preble, Nate Chandler

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Challenge: Add a Window Controller

In the exercise above you created a window with a content view controller, but did not create a window controller. In fact, NSWindowController also has a contentViewController property, which mirrors the window’s contentViewController. Create an NSWindowController subclass called MainWindowController and move the code for instantiating the view controller within it.

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