Chapter 4Just Enough Objective-C: Part Two
Key Skills & Concepts
• Using properties
• Understanding multiple-argument messages
• Understanding the id variable type, dynamic typing, and dynamic binding
• Understanding inheritance
• Using composition
• Using categories
• Using protocols
• Handling exceptions
In the last chapter, you learned about Objective-C classes, simple message syntax, and managing memory. In this chapter, you learn about properties, multiple-argument messages, dynamic binding, polymorphism, the id type, and inheritance. You also learn about categories and protocols. And finally, you learn about Objective-C exception handling.
Properties
In the last chapter, you had to manage memory when setting an object’s instance variable. ...
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