You’ll cover topics that may not be the flashiest parts of Cocoa, but they’re ones you’ll need to know to create robust, feature-rich applications for yourself. And you’ll learn more than just Cocoa and RubyCocoa, you’ll get first-hand effective agile development practices. You’ll see test-first development of user-interface code, little domain-specific languages that take advantage of Ruby features, and other Rubyish tricks. At the end of the book, you’ll be ready to write a real Mac OS X application that can be distributed to real users.