Conventions

In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text are shown as follows: "The contentSize property is the bounding box of the node."

A block of code is set as follows:

    
// Apple recommend assigning self with supers return value
    self = [super init];
    if (!self) return(nil);
 

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "Press the Publish button. Your app will now be published on Xcode".