About the Authors

Dave Mark is a longtime Mac developer and author who has written a number of books on Mac and iOS development, including Beginning iOS 6 Development (Apress, 2013), More iOS 6 Development (Apress, 2013), Learn C on the Mac (Apress, 2013), Ultimate Mac Programming (Wiley, 1995), and the Macintosh Programming Primer series (Addison-Wesley, 1992). Dave was one of the founders of MartianCraft, an iOS and Android development house. Dave loves the water and spends as much time as possible on it, in it, or near it. He lives with his wife and three children in Virginia. On Twitter, he’s @davemark.

Jack Nutting has been using Cocoa since the olden days, long before it was even called Cocoa. He has used Cocoa and its predecessors to develop software for a wide range of industries and applications, including gaming, graphic design, online digital distribution, telecommunications, finance, publishing, and travel. Jack has written several books on iOS and Mac development, including Beginning iOS 6 Development (Apress, 2013), Learn Cocoa on the Mac (Apress, 2013), and Beginning iPad Development for iPhone Developers (Apress, 2010). Besides writing software and books, he also leads developer training and blogs from time to time at www.nuthole.com. He’s @jacknutting on Twitter.

Kim Topley is a software engineer with over 30 years of experience ranging from mainframe microcode and the UNIX kernel to graphical user interfaces and mobile applications. He is the author of five books on various aspects of Java and JavaFX and has been working with iOS since reading one of the first books published on the subject—the first edition of Beginning iPhone Development.

Fredrik Olsson has been using Cocoa since Mac OS X 10.1 and for iPhone since the unofficial toolchain. He has had a long and varied career, ranging from real-time assembly to enterprise Java. He is passionate about Objective-C for its elegance, Cocoa frameworks for its clarity, and both for creating a greater whole than their parts. When away from a keyboard, Fredrik has spoken at conferences and led developer training. You’ll find Fredrik on Twitter as @peylow.

Jeff LaMarche is a Mac and an iOS developer with more than 20 years of programming experience. Jeff has written a number of iOS and Mac development books, including Beginning iOS 6 Development (Apress, 2013) and More iOS 6 Development (Apress, 2013). Jeff is a principal at MartianCraft, an iOS and Android development house. He has written about Cocoa and Objective-C for MacTech magazine, as well as articles for Apple’s developer web site. Jeff also writes about iOS development for his widely read blog at www.iphonedevelopment.blogspot.com. He can be found on Twitter as @jeff_lamarche.