View source for Objective-C 2.0 Essentials

This on-line book is currently under development. It is scheduled for completion in November 2009.

# [[About Objective-C Essentials]]
#* [[About Objective-C Essentials|Why are you reading this?]]
#* [[About Objective-C Essentials|Supported Platforms]]<br><br>
# [[The History of Objective-C]]
#* [[The History of Objective-C|The C Programming Language]]
#* [[The History of Objective-C|The Smalltalk programming Language]]
#* [[The History of Objective-C|C meets Smalltalk]]
#* [[The History of Objective-C|Objective-C and Apple]]<br><br>
# [[Installing Xcode and Compiling Objective-C on Mac OS X]]
#* [[Installing Xcode and Compiling Objective-C on Mac OS X|Installing Xcode on Mac OS X]]
#* [[Installing Xcode and Compiling Objective-C on Mac OS X|Starting Xcode]]
#* [[Installing Xcode and Compiling Objective-C on Mac OS X|Starting a New Project]]
#* [[Installing Xcode and Compiling Objective-C on Mac OS X|Writing an Objective-C Application with Xcode]]
#* [[Installing Xcode and Compiling Objective-C on Mac OS X|Compiling Objective-C from the Command Line]]<br><br>
# [[Installing and using GNUstep and Objective-C on Windows]]
#* [[Installing and using GNUstep and Objective-C on Windows|Downloading the GNUstep Packages]]
#* [[Installing and using GNUstep and Objective-C on Windows|Installing MinGW and GNUstep on Windows]]
#* [[Installing and using GNUstep and Objective-C on Windows|Running the GNUstep Shell]]
#* [[Installing and using GNUstep and Objective-C on Windows|Testing the Installation]]<br><br>
# [[Installing and Using GNUstep and Objective-C on Linux]]
#* [[Installing and Using GNUstep and Objective-C on Linux|Installing GNUstep on Ubuntu]]
#* [[Installing and Using GNUstep and Objective-C on Linux|Compiling Objective-C Code]]<br><br>
# [[Building and Installing GNUstep on Linux]]
#* [[Building and Installing GNUstep on Linux|Installing gcc and Objective-C Support on Linux]]
#* [[Building and Installing GNUstep on Linux|Package Dependencies]]
#* [[Building and Installing GNUstep on Linux|Obtaining the GNUstep Source Code]]
#* [[Building and Installing GNUstep on Linux|Configuring the Build Process]]
#* [[Building and Installing GNUstep on Linux|Building GNUstep]]
#* [[Building and Installing GNUstep on Linux|Testing the Objective-C and GNUstep Installation]]
#* [[Building and Installing GNUstep on Linux|Compiling Objective-C Code]]<br><br>
# [[Objective-C 2.0 Data Types]]
#* [[Objective-C 2.0 Data Types|int Data Type]]
#* [[Objective-C 2.0 Data Types|char Data Type]]
#* [[Objective-C 2.0 Data Types|Special Characters/Escape Sequences]]
#* [[Objective-C 2.0 Data Types|float Data Type]]
#* [[Objective-C 2.0 Data Types|double Data Type]]
#* [[Objective-C 2.0 Data Types|id Data Type]]
#* [[Objective-C 2.0 Data Types|BOOL Data Type]]
#* [[Objective-C 2.0 Data Types|Objective-C Data Type Qualifiers]]
#* [[Objective-C 2.0 Data Types|long]]
#* [[Objective-C 2.0 Data Types|long long]]
#* [[Objective-C 2.0 Data Types|short]]
#* [[Objective-C 2.0 Data Types|signed / unsigned]]<br><br>
# [[Working with Variables and Constants in Objective-C]]
#* [[Working with Variables and Constants in Objective-C|What is an Objective-C Variable]]
#* [[Working with Variables and Constants in Objective-C|What is an Objective-C Constant?]]
#* [[Working with Variables and Constants in Objective-C|Type Casting Objective-C Variables]]<br><br>
# [[Objective-C Operators and Expressions]]
#* [[Objective-C Operators and Expressions|What is an Expression?]]
#* [[Objective-C Operators and Expressions|The Basic Assignment Operator]]
#* [[Objective-C Operators and Expressions|Objective-C Arithmetic Operators]]
#* [[Objective-C Operators and Expressions|Compound Assignment Operators]]
#* [[Objective-C Operators and Expressions|Increment and Decrement Operators]]
#* [[Objective-C Operators and Expressions|Comparison Operators]]
#* [[Objective-C Operators and Expressions|Boolean Logical Operators]]
#* [[Objective-C Operators and Expressions|The Ternary Operator]]
#* [[Objective-C Operators and Expressions|Bitwise Operators]]
#* [[Objective-C Operators and Expressions|Bitwise AND]]
#* [[Objective-C Operators and Expressions|Bitwise OR]]
#* [[Objective-C Operators and Expressions|Bitwise XOR]]
#* [[Objective-C Operators and Expressions|Bitwise Left Shift]]
#* [[Objective-C Operators and Expressions|Bitwise Right Shift]]
#* [[Objective-C Operators and Expressions|Compound Bitwise Operators]]<br><br>
# [[Objective-C 2.0 Operator Precedence]]
# [[Commenting Objective-C Code]]
#* [[Commenting Objective-C Code|Why Comment your Code?]]
#* [[Commenting Objective-C Code|Single Line Comments]]
#* [[Commenting Objective-C Code|Multi-line Comments]]<br><br>
# [[Objective-C Flow Control with if and else]]
#* [[Objective-C Flow Control with if and else|Using the if Statement]]
#* [[Objective-C Flow Control with if and else|Using if ... else .. Statements]]
#* [[Objective-C Flow Control with if and else|Using if ... else if .. Statements]]
#* [[Objective-C Flow Control with if and else|Summary]]<br><br>
# [[The Objective-C switch Statement]]
#* [[The Objective-C switch Statement|Why Use a switch Statement?]]
#* [[The Objective-C switch Statement|Using the switch Statement Syntax]]
#* [[The Objective-C switch Statement|A switch Statement Example]]
#* [[The Objective-C switch Statement|Explaining the Example]]
#* [[The Objective-C switch Statement|Combining case Statements]]<br><br>
# [[Objective-C Looping - The for Statement]]
#* [[Objective-C Looping - The for Statement|Why Use Loops?]]
#* [[Objective-C Looping - The for Statement|Objective-C Loop Variable Scope]]
#* [[Objective-C Looping - The for Statement|Creating an Infinite for Loop]]
#* [[Objective-C Looping - The for Statement|Breaking Out of a for Loop]]
#* [[Objective-C Looping - The for Statement|Nested for Loops]]
#* [[Objective-C Looping - The for Statement|Breaking from Nested Loops]]
#* [[Objective-C Looping - The for Statement|Continuing for Loops]]
#* [[Objective-C Looping - The for Statement|Using for Loops with Multiple Variables]]<br><br>
# [[Objective-C Looping with do and while Statements]]
#* [[Objective-C Looping with do and while Statements|The Objective-C while Loop]]
#* [[Objective-C Looping with do and while Statements|Objective-C do ... while loops]]
#* [[Objective-C Looping with do and while Statements|Breaking from Loops]]
#* [[Objective-C Looping with do and while Statements|The continue Statement]]<br><br>
# [[An Overview of Objective-C Object Oriented Programming]]
#* [[An Overview of Objective-C Object Oriented Programming|What is an Object?]]
#* [[An Overview of Objective-C Object Oriented Programming|What is a Class?]]
#* [[An Overview of Objective-C Object Oriented Programming|Declaring an Objective-C Class Implementation]]
#* [[An Overview of Objective-C Object Oriented Programming|Adding Instance Variables to a Class]]
#* [[An Overview of Objective-C Object Oriented Programming|Define Class Methods]]
#* [[An Overview of Objective-C Object Oriented Programming|Declaring an Objective-C Class Implementation]]
#* [[An Overview of Objective-C Object Oriented Programming|Declaring, Initializing and Releasing a Class Instance]]
#* [[An Overview of Objective-C Object Oriented Programming|Calling Methods and Accessing Instance Data]]
#* [[An Overview of Objective-C Object Oriented Programming|Creating the Program Section]]
#* [[An Overview of Objective-C Object Oriented Programming|Bringing it all Together]]
#* [[An Overview of Objective-C Object Oriented Programming|Structuring Object-Oriented Objective-C Code]]<br><br>
# [[Writing Objective-C Class Methods]]
#* [[Writing Objective-C Class Methods|Instance and Class Methods]]
#* [[Writing Objective-C Class Methods|Creating a New Class Method]]
#* [[Writing Objective-C Class Methods|The @interface Section]]
#* [[Writing Objective-C Class Methods|The @implementation Section]]
#* [[Writing Objective-C Class Methods|The main() Function]]<br><br>
# [[Objective-C - Data Encapsulation, Synthesized Accessors and Dot Notation]]
#* [[Objective-C - Data Encapsulation, Synthesized Accessors and Dot Notation|Data Encapsulation]]
#* [[Objective-C - Data Encapsulation, Synthesized Accessors and Dot Notation|Synthesized Accessor Methods]]
#* [[Objective-C - Data Encapsulation, Synthesized Accessors and Dot Notation|Direct Access to Encapsulated Data]]
#* [[Objective-C - Data Encapsulation, Synthesized Accessors and Dot Notation|Objective-C and Dot Notation]]
#* [[Objective-C - Data Encapsulation, Synthesized Accessors and Dot Notation|Controlling Access to Instance Variables]]<br><br>
# [[Objective-C Inheritance]]
#* [[Objective-C Inheritance|Inheritance, Classes and Subclasses]]
#* [[Objective-C Inheritance|An Objective-C Inheritance Example]]
#* [[Objective-C Inheritance|Extending the Functionality of a Subclass]]
#* [[Objective-C Inheritance|Overriding Inherited Methods]]<br><br>
# [[Pointers and Indirection in Objective-C]]
#* [[Pointers and Indirection in Objective-C|How Variables are Stored]]
#* [[Pointers and Indirection in Objective-C|An Overview of Indirection]]
#* [[Pointers and Indirection in Objective-C|Indirection and Objects]]
#* [[Pointers and Indirection in Objective-C|Indirection and Object Copying]]<br><br>
# [[Objective-C Dynamic Binding and Typing with the id Type]]
#* [[Objective-C Dynamic Binding and Typing with the id Type|Static Typing vs Dynamic Typing]]
#* [[Objective-C Dynamic Binding and Typing with the id Type|Dynamic Binding]]
#* [[Objective-C Dynamic Binding and Typing with the id Type|Polymorphism]]<br><br>
# [[Objective-C Variable Scope and Storage Class]]
#* [[Objective-C Variable Scope and Storage Class|Variable Scope]]
#* [[Objective-C Variable Scope and Storage Class|Block Scope]]
#* [[Objective-C Variable Scope and Storage Class|Function Scope]]
#* [[Objective-C Variable Scope and Storage Class|Global Scope]]
#* [[Objective-C Variable Scope and Storage Class|File Scope]]
#* [[Objective-C Variable Scope and Storage Class|Variable Storage Class]]<br><br>
# [[An Overview of Objective-C Functions]]
#* [[An Overview of Objective-C Functions|What is a Function?]]
#* [[An Overview of Objective-C Functions|How to Declare an Objective-C Function]]
#* [[An Overview of Objective-C Functions|Calling an Objective-C Function]]
#* [[An Overview of Objective-C Functions|Function Prototypes]]
#* [[An Overview of Objective-C Functions|Function Scope and the static Specifier]]
#* [[An Overview of Objective-C Functions|Static Variables in Functions]]<br><br>
# [[Objective-C Enumerators]]
#* [[Objective-C Enumerators|Why Use Enumerators]]
#* [[Objective-C Enumerators|Declaring an Enumeration]]
#* [[Objective-C Enumerators|Creating and Using an Enumeration]]
#* [[Objective-C Enumerators|Enumerators and Variable Names]]<br><br>
# [[An Overview of the Objective-C Foundation Framework]]
#* [[An Overview of the Objective-C Foundation Framework|The Foundation Framework]]
#* [[An Overview of the Objective-C Foundation Framework|Including the Foundation Headers]]
#* [[An Overview of the Objective-C Foundation Framework|Finding the Foundation Framework Documentation]]<br><br>
# [[Working with String Objects in Objective-C]]
#* [[Working with String Objects in Objective-C|Strings without NSString]]
#* [[Working with String Objects in Objective-C|Declaring Constant String Objects]]
#* [[Working with String Objects in Objective-C|Creating Mutable and Immutable String Objects]]
#* [[Working with String Objects in Objective-C|Getting the Length of a String]]
#* [[Working with String Objects in Objective-C|Copying a String]]
#* [[Working with String Objects in Objective-C|Searching for a Substring]]
#* [[Working with String Objects in Objective-C|Replacing Parts of a String]]
#* [[Working with String Objects in Objective-C|String Search and Replace]]
#* [[Working with String Objects in Objective-C|Deleting Sections of a String]]
#* [[Working with String Objects in Objective-C|Extracting a Subsection of a String]]
#* [[Working with String Objects in Objective-C|Inserting Text into a String]]
#* [[Working with String Objects in Objective-C|Appending Text to the End of a String]]
#* [[Working with String Objects in Objective-C|Comparing Strings]]
#* [[Working with String Objects in Objective-C|Checking for String Prefixes and Suffixes]]
#* [[Working with String Objects in Objective-C|Converting to Upper or Lower Case]]
#* [[Working with String Objects in Objective-C|Converting Strings to Numbers]]
#* [[Working with String Objects in Objective-C|Converting a String Object to ASCII]]<br><br>
# [[Understanding Objective-C Number Objects]]
#* [[Understanding Objective-C Number Objects|Creating and Initializing NSNumber Objects]]
#* [[Understanding Objective-C Number Objects|Getting the Value of a Number Object]]
#* [[Understanding Objective-C Number Objects|Comparing Number Objects]]
#* [[Understanding Objective-C Number Objects|Getting the Number Object Value as a String]]<br><br>
# [[Working with Objective-C Array Objects]]
#* [[Working with Objective-C Array Objects|Mutable and Immutable Arrays]]
#* [[Working with Objective-C Array Objects|Creating an Array Object]]
#* [[Working with Objective-C Array Objects|Finding out the Number of Elements in an Array]]
#* [[Working with Objective-C Array Objects|Accessing the Elements of an Array object]]
#* [[Working with Objective-C Array Objects|Accessing Array Elements using Fast Enumeration]]
#* [[Working with Objective-C Array Objects|Adding Elements to an Array Object]]
#* [[Working with Objective-C Array Objects|Inserting Elements into an Array]]
#* [[Working with Objective-C Array Objects|Deleting Elements from an Array Object]]
#* [[Working with Objective-C Array Objects|Sorting Array Objects]]<br><br>
# [[Objective-C Dictionary Objects]]
#* [[Objective-C Dictionary Objects|What are Dictionary Objects?]]
#* [[Objective-C Dictionary Objects|Creating Dictionary Objects]]
#* [[Objective-C Dictionary Objects|Initializing and Adding Entries to a Dictionary Object]]
#* [[Objective-C Dictionary Objects|Getting an Entry Count]]
#* [[Objective-C Dictionary Objects|Accessing Dictionary Entries]]
#* [[Objective-C Dictionary Objects|Removing Entries from a Dictionary Object]]<br><br>
# [[Working with Directories in Objective-C]]
#* [[Working with Directories in Objective-C|The Objective-C NSFileManager, NSFileHandle and NSData Classes]]
#* [[Working with Directories in Objective-C|Understanding Pathnames in Objective-C]]
#* [[Working with Directories in Objective-C|Creating an NSFileManager Instance Object]]
#* [[Working with Directories in Objective-C|Identifying the Current Working Directory]]
#* [[Working with Directories in Objective-C|Changing to a Different Directory]]
#* [[Working with Directories in Objective-C|Creating a New Directory]]
#* [[Working with Directories in Objective-C|Deleting a Directory]]
#* [[Working with Directories in Objective-C|Renaming or Moving a Directory]]
#* [[Working with Directories in Objective-C|Getting a Directory File Listing]]
#* [[Working with Directories in Objective-C|Getting the Attributes of a File or Directory]]<br><br>
# [[Working with Files in Objective-C]]
#* [[Working with Files in Objective-C|Creating an NSFileManager Instance]]
#* [[Working with Files in Objective-C|Checking if a File Exists]]
#* [[Working with Files in Objective-C|Comparing the Contents of Two Files]]
#* [[Working with Files in Objective-C|Checking if a File is Readable/Writable/Executable/Deletable]]
#* [[Working with Files in Objective-C|Moving/Renaming a File]]
#* [[Working with Files in Objective-C|Copying a File]]
#* [[Working with Files in Objective-C|Removing a File]]
#* [[Working with Files in Objective-C|Creating a Symbolic Link]]
#* [[Working with Files in Objective-C|Reading and Writing Files with NSFileManager]]
#* [[Working with Files in Objective-C|Working with Files using the NSFileHandle Class]]
#* [[Working with Files in Objective-C|Creating an NSFileHandle Object]]
#* [[Working with Files in Objective-C|NSFileHandle File Offsets and Seeking]]
#* [[Working with Files in Objective-C|Reading Data from a File]]
#* [[Working with Files in Objective-C|Writing Data to a File]]
#* [[Working with Files in Objective-C|Truncating a File]]<br><br>
# [[Constructing and Manipulating Paths with NSPathUtilities]]
#* [[Constructing and Manipulating Paths with NSPathUtilities|The Anatomy of a Path]]
#* [[Constructing and Manipulating Paths with NSPathUtilities|Finding a Temporary Directory]]
#* [[Constructing and Manipulating Paths with NSPathUtilities|Getting the Current User's Home Directory]]
#* [[Constructing and Manipulating Paths with NSPathUtilities|Getting the Home Directory of a Specified User]]
#* [[Constructing and Manipulating Paths with NSPathUtilities|Extracting the Filename from a Path]]
#* [[Constructing and Manipulating Paths with NSPathUtilities|Extracting the Filename Extension]]
#* [[Constructing and Manipulating Paths with NSPathUtilities|Standardizing a Path]]
#* [[Constructing and Manipulating Paths with NSPathUtilities|Extracting the Components of a Path]]<br><br>
# [[Copying Objects in Objective-C]]
#* [[Copying Objects in Objective-C|Objects and Pointers]]
#* [[Copying Objects in Objective-C|Copying an Object in Objective-C using the <NSCopying> Protocol]]
#* [[Copying Objects in Objective-C|<NSCopying> Protocol and copyWithZone Method Implementation]]
#* [[Copying Objects in Objective-C|Performing a Deep Copy]]<br><br>
# [[Using Objective-C Preprocessor Directives]]
#* [[Using Objective-C Preprocessor Directives|The #define Statement]]
#* [[Using Objective-C Preprocessor Directives|Creating Macros with the #define Statement]]
#* [[Using Objective-C Preprocessor Directives|Changing the Objective-C Language with #define]]
#* [[Using Objective-C Preprocessor Directives|Undefining a Definition with #undef]]
#* [[Using Objective-C Preprocessor Directives|Conditional Compilation]]
#* [[Using Objective-C Preprocessor Directives|The #import Directive]]<br><br>