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Kevin Hoffman is an enterprise programmer who has worked with virtually every major technology platform and programming language. He has presented twice at Apple' Worldwide Developers Conference (WWDC), guest lectured at Columbia University on iPhone and Objective-C programming, and has written or co-written sixteen technology books. As chief systems architect for Oak Leaf Waste Management, he specializes in mobile and cloud application development. Hoffman served as editor-in-chief of iPhone Developer's Journal.