Objectice c

tObject-Oriented Programming with Objective-C
Tools & Languages: Objective-C

2010-11-15

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Contents
Introduction

Introduction 7
Who Should Read This Document 7 Organization of This Document 8 See Also 8

Chapter 1 Chapter 2

Why Objective-C? 9 Object-Oriented Programming 11
Data and Operations 11 Interface and Implementation 12

Chapter 3

The Object Model15
The Messaging Metaphor 16 Classes 17 Modularity 18 Reusability 19 Mechanisms of Abstraction 20 Encapsulation 20 Polymorphism 21 Inheritance 22 Class Hierarchies 22 Subclass Definitions 23 Uses of Inheritance 23 Dynamism 24 Dynamic Typing 25 Dynamic Binding 25 Dynamic Loading 27

Chapter 4

Structuring Programs 29
Outlet Connections 29 Extrinsic and Intrinsic Connections 30 Activating theObject Network 31 Aggregation and Decomposition 31 Models and Frameworks 32

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2010-11-15 | © 2010 Apple Inc. All Rights Reserved.

CONTENTS

Chapter 5

Structuring the Programming Task 35
Collaboration 35 Organizing Object-Oriented Projects 36 Designing on a Large Scale 36 Separating the Interface from the Implementation 36 Dividing the Work into Modules 36 Keeping the Interface Simple37 Making Decisions Dynamically 37 Inheriting Generic Code 37 Reusing Tested Code 37

Document Revision History 39

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2010-11-15 | © 2010 Apple Inc. All Rights Reserved.

Figures
Chapter 2

Object-Oriented Programming 11
Figure 2-1 Interface and implementation 12

Chapter 3

The Object Model 15
Figure 3-1 Figure 3-2 Figure 3-3 An object 15 Objects in a network 16 An inheritance...