Conventions

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

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "But what if we want to make changes to, say, the app's Build Settings, or even its Info.plist file? Can we do that too?"

A block of code is set as follows:

 cosmicDoor.shadowColor = .gold 
 cosmicDoor.shadowOffset = CGSize(width: 5.0, height: -5.0) 
 cosmicDoor.shadowRadius = 15.0 
 cosmicDoor.shadowOpacity = 1.0 

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

  override func viewDidLoad() 
  { 
    super.viewDidLoad() 
    customView.wantsLayer = true    
    setUpButton() 
  } 

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Click Options, and ensure that Copy Items if Needed is ticked." 

Warnings or important notes appear in a box like this.

Tips and tricks appear like this.