Visual Programming for OS X This version (revision2) was revised Dec 2013 to correct some minor errors and use a new cover design. The fourth book in the Xcode Primer series. Learn to build Mac apps in Xcode 5 on OS X Mavericks or Mountain Lion. Covers app building basics, debugging, protocols, delegates, table views, collection views, KVO, popovers, windows and much more. Build on your C and Objective-C knowledge from the previous Xcode Primer books and learn the art of visual programming in Xcode 5. Free source code available.