The Ruby Koans walk you along the path to enlightenment in order to learn Ruby. The goal is to learn the Ruby language, syntax, structure, and some common functions and libraries. We also teach you culture. Testing is not just something we pay lip service to, but something we live. It is essential in your quest to learn and do great things in the language.
UITableViewCell subclass that adds a “badgeNumber” (int) property the cell. This badge draws in an identical manner to the badges present in MobileMail.app. The class supports custom badge colours for both normal and highlighted states.