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 iPhone 4 Development (Apress, 2011), More iPhone 3 Development (Apress, 2010), Learn C on the Mac (Apress, 2008), 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.

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. When he is not working on Mac or iOS projects, he is developing web applications with Ruby on Rails. Jack is a passionate proponent of Objective-C and the Cocoa frameworks. At the drop of a hat, he will speak at length on the virtues of dynamic dispatch and runtime class manipulations to anyone who will listen (and even to some who won't). Jack has written several books on iOS and Mac development, including Beginning iPhone 4 Development (Apress, 2011), Learn Cocoa on the Mac (Apress, 2010), and Beginning iPad Development for iPhone Developers (Apress, 2010). He blogs from time to time at www.nuthole.com.

Jeff LaMarche is a Mac and iOSdeveloper with more than 20 years of programming experience. Jeff has written a number of iOS and Mac development books, including Beginning iPhone 4 Development (Apress, 2011), More iPhone 3 Development (Apress, 2010), and Learn Cocoa on the Mac (Apress, 2010). 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 website. Jeff also writes about iOS development for his widely read blog at www.iphonedevelopment.blogspot.com.