About the Authors

Jack Nutting has been using Cocoa since the olden days, long before it was even called Cocoa. He’s 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’s not working on Mac or iOS projects, making killer games with Unity3D, or rocking out in his punk rock band, he’s usually spending time with his family. Jack is @jacknutting on Twitter and blogs from time to time at www.nuthole.com. (Photograph courtesy of Alison De Mars von Blixen.)

Peter Clark started with NeXTStep in college, circa 1990. That experience set the tone for the first half of his career when he worked with Jack at a consulting company in the Twin Cities. He worked with companies in the Bay Area, Chicago, and Twin Cities on NeXTStep and WebObjects projects, wrote a book on OpenStep development, and then moved on to Java, .NET, Ruby, and Scala development and managing engineering teams. He’s pleased that so many of the design patterns from NeXTStep are still useful today and finds that Cocoa development is a mix of comfort and pleasant surprises. Peter is currently the Director of Software Development for a research project at the University of Minnesota. He blogs occasionally at http://blog.pclark.net and can be found on Twitter as @pclark. Peter wants you to know that he started using NeXTStep at least a month or two before Jack did. (Photograph courtesy of Wade Stebbings.)