Hour 7. Declaring a Class in an Interface File
What You’ll Learn in This Hour
Developing classes
Introducing protocols
Looking at class declarations
Letting Xcode Do the Work
In Hour 6, “Exploring Messaging and a Testbed App,” you saw how you use messages to tell the object that receives the message what to do. The message itself consists of the name of a method along with zero or more arguments. At runtime, information about the receiver is ...
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