Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "As we have done throughout the book, we are going to create a Manager class."

A block of code is set as follows:

let arrOfInts:[Int] = []
let arrStrings = [String]()

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Once installed, launch Xcode, and you should see the following Welcome to Xcode screen."

Warnings or important notes appear like this.

Tips and tricks appear like this.