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Aaron Hillegass

Christian Keur (Atlanta, GA) is a software engineer and instructor at Big Nerd Ranch, where he maintains the course materials for the company's highly acclaimed iOS Bootcamp on which this book is based. Christian earned a degree in Computer Science from Georgia Tech and can often be found wandering around Atlanta, glancing up at the stars, or reading a book.

Aaron Hillegass (Atlanta, GA), founder of Big Nerd Ranch and a former employee at NeXT and Apple, has nearly two decades' experience programming and teaching Objective-C, Cocoa, and, more recently, iOS. Aaron is the co-author of Cocoa Programming for Mac OS X and Objective-C Programming: The Big Nerd Ranch Guide.