Objective-C Programming · The Big Nerd Ranch Guide, 2/e (Big Nerd Ranch Guides) by Hillegass, Aaron -- Read -- Imperial Library of Trantor

Index

Title Page Acknowledgments I. Getting Started 1. You and This Book C and Objective-C How this book works How the life of a programmer works 2. Your First Program Installing Apple’s developer tools Getting started with Xcode Where do I start writing code? How do I run my program? So, what is a program? Don’t stop II. How Programming Works 3. Variables and Types Types A program with variables Challenge 4. if/else Boolean variables When curly braces are optional else if For the more curious: conditional operators Challenge 5. Functions When should I use a function? How do I write and use a function? How functions work together

Standard libraries

Local variables, frames, and the stack Scope Recursion Looking at frames in the debugger return Global and static variables Challenge 6. Format Strings Using tokens Escape sequences Challenge 7. Numbers Integers

Tokens for displaying integers Integer operations

Integer division NSInteger and NSUInteger Operator shorthand

Floating-point numbers

Tokens for displaying floating-point numbers The math library

Challenge A note about comments 8. Loops The while loop The for loop break continue The do-while loop Challenge: counting down Challenge: user input 9. Addresses and Pointers Getting addresses Storing addresses in pointers Getting the data at an address How many bytes? NULL Stylish pointer declarations Challenge: how much memory? Challenge: how much range? 10. Pass-By-Reference Writing pass-by-reference functions Avoid dereferencing NULL Challenge 11. Structs Challenge 12. The Heap III. Objective-C and Foundation 13. Objects Objects

Classes Creating your first object

Methods and messages

Message sends Another message Class methods vs. instance methods Sending bad messages

Capitalization counts! Objective-C naming conventions

A note on terminology

Challenge 14. More Messages A message with an argument Multiple arguments Nesting message sends alloc and init Sending messages to nil id Challenge 15. Objects and Memory On pointers and their values Memory management

ARC

16. NSString Creating instances of NSString NSString methods Class references Other parts of the documentation Challenge: finding more NSString methods Challenge: using readline() 17. NSArray Creating arrays Accessing arrays Iterating over arrays NSMutableArray Old-style array methods Challenge: a grocery list Challenge: interesting names 18. Your First Class Accessor methods

Accessor naming conventions

self Multiple files Class prefixes Challenge 19. Properties Declaring properties Property attributes Dot notation 20. Inheritance Overriding methods super Inheritance hierarchy description and %@ Challenge 21. Object Instance Variables and Properties Object ownership and ARC

Creating the BNRAsset class Adding a to-many relationship to BNREmployee

Challenge: holding portfolio Challenge: removing assets 22. Class Extensions Hiding mutability Headers and inheritance Headers and generated instance variables Challenge 23. Preventing Memory Leaks Strong reference cycles Weak references Zeroing of weak references For the More Curious: manual reference counting and ARC history

Retain count rules

24. Collection Classes NSSet/NSMutableSet NSDictionary/NSMutableDictionary Immutable objects Sorting arrays Filtering Collections and ownership C primitive types Collections and nil Challenge: reading up Challenge: top holdings Challenge: sorted holdings 25. Constants Preprocessor directives

#include and #import #define

Global variables enum #define vs. global variables 26. Writing Files with NSString and NSData Writing an NSString to a file NSError Reading files with NSString Writing an NSData object to a file Reading an NSData from a file Finding special directories 27. Callbacks The run loop Target-action Helper objects Notifications Which to use? Callbacks and object ownership For the more curious: how selectors work 28. Blocks Using blocks

Declaring a block variable Composing a block Passing in a block typedef

Blocks vs. other callbacks More on blocks

Return values Anonymous blocks External variables

Using self in blocks

Unexpectedly using self in blocks

Modifying external variables

Challenge: an anonymous block Challenge: using a block with NSNotificationCenter 29. Protocols Calling optional methods 30. Property Lists Challenge IV. Event-Driven Applications 31. Your First iOS Application GUI-based applications Getting started with iTahDoodle BNRAppDelegate Model-View-Controller The application delegate Setting up views Running on the iOS simulator Wiring up the button Wiring up the table view Saving and loading data

Adding a C helper function Saving task data Loading task data

For the more curious: what about main()? For the more curious: running iTahDoodle on a device 32. Your First Cocoa Application Getting started with TahDoodle Setting up views in Interface Builder

Setting up the button Setting up the table view Adding autolayout constraints

Making connections

File’s Owner Setting the button’s target-action pair Connecting the table view

Implementing NSTableViewDataSource Saving and loading data Challenge V. Advanced Objective-C 33. init Writing init methods A basic init method

instancetype Using and checking the superclass initializer

init methods that take arguments Using accessors Multiple initializers Deadly init methods 34. More about Properties More on property attributes

Mutability Lifetime specifiers

copy More about copying

Advice on atomic vs. nonatomic

Implementing accessor methods 35. Key-Value coding Non-object types Key paths 36. Key-Value Observing Using the context in KVO Triggering the notification explicitly Dependent properties 37. Categories Challenge VI. Advanced C 38. Bitwise Operations Bitwise-OR Bitwise-AND Other bitwise operators

Exclusive-OR Complement Left-shift Right-shift

Using enum to define bit masks More bytes Challenge 39. C Strings char char * String literals Converting to and from NSString Challenge 40. C Arrays Challenge 41. Running from the Command Line Command-line arguments More convenient running from the command-line 42. Switch Statements A. The Objective-C Runtime

Introspection Dynamic method lookup and execution Management of classes and inheritance hierarchies How KVO works Final notes Challenge: instance variables

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