This repository contains examples that I completed when reading the Objective-C Programming The Big Nerd Ranch Guide.

The folder AGoodStart represents the Part 1 of the book.

The folder Turkey represents Chapter 3 Variables and Types in the book.

The folder TwoFloats contains the challenge for Chapter 3 Variables and Types in the book.

The folder ClassCertificates represents Chapter 5 Functions in the book.

The folder BeerSong represents Chapter 5 Functions in the book.

The folder Degrees represents Chapter 5 Functions in the book.

The folder Triangle contains the challenge Chapter 5 Functions in the book.

I will update the README to match the correct chapters as soon as I get the time. I'm very lazy about this.

The folder Callbacks represents Chapter 24 Callbacks in the book.

Some notes about that chapter include the following:

For Objective-C programmers there are three forms of callbacks;

Target-Action . Objects that do just one thing use target-action. Objects do not own their targets so if you should zero the target pointer in its dealloc method:

- (void)dealloc
{
	[buttonThatKeepsSendingMeMessages setTarget:nil];
}

Helper-Objects . Objects that have more complicated lives use helper objects and the most common type of helper is the delegate.

- (void)dealloc
{
	[windowThatBossesMeAround setDelegate:nil];
	[tableViewThatBegsForData setDataSource:nil];
}

Notifications . Objects that might need to trigger callbacks in several other object use notifications.

- (void)dealloc
{
	[[NSNotificationCenter defaultCenter] removeObserver:self];
}