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This chapter is from the book

This chapter is from the book

Sams Teach Yourself Objective-C in 24 Hours, 2nd EditionSams Teach Yourself Objective-C in 24 Hours, 2nd Edition

Learn More Buy

This chapter is from the book

This chapter is from the book

Sams Teach Yourself Objective-C in 24 Hours, 2nd EditionSams Teach Yourself Objective-C in 24 Hours, 2nd Edition

Learn More Buy

Workshop

Quiz

  1. How do you differentiate class and instance methods in your code?
  2. When do you call [super init] in an initializer?

Quiz Answers

  1. Class methods begin with +; instance methods begin with –.
  2. This is the first thing you do. You might go up through a hierarchy, but you have to have all of the superclasses created and initialized before you continue with your own.

Activities

Browse the Cocoa frameworks to see how messages are structured. Get used to the sequence of labeled parameters in the messages. It might take a while to be comfortable reading them, but remember that this is the environment in which you are going to be working.

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