Conventions Used in This Book
The following conventions are used in this book:
- Italic
Used for file and folder names, example URLs, and new terms when they are defined
-
Constant width Used for code examples and the names of variables, handlers, and commands
-
Constant width italic Used for placeholders in code, where the programmer would supply the actual name of something
-
Constant width bold Used in code examples, for user input from the command line; often seen in conjunction with
$, which symbolizes the shell prompt- -- code comment in italic
Used in code examples, for my comments to the reader about the code or its effect
-
-- code comment in bold Used in code examples, to represent the result (output) of executing the line
-
vertical bar | Used in syntax templates to indicate alternatives
-
[square brackets] Used in syntax templates to indicate that something is optional
- ¬
This character indicates a line of code that continues; these lines will be unbroken in your code but were too long to fit on the printed pages of this book.
Tip
This icon represents a tip relating to the nearby text.
Warning
This icon represents a warning relating to the nearby text.
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