About the Author
Joseph Hoffman is an electrical engineer who does freelance web and iOS development in his spare time. In 2012 he started NSCookbook.com, which is an iOS programming tutorial site that provides tutorials in recipe format.
Hans-Eric Grönlund has developed software professionally since 1990. He’s currently an employee at Knowit, a leading Scandinavian IT consultancy company, where he helps teams develop software with agile methods.
Software development is not only Hans-Eric’s profession; it’s also his hobby. In his spare time, he ...
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