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Sams Teach Yourself Objective-C in 24 Hours, Second Edition by Jesse Feiler

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Hour 7. Declaring a Class in an Interface File

What You’ll Learn in This Hour

Image Developing classes

Image Introducing protocols

Image 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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