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: "In the following code, you can see the definition of a generic Sword type for our upcoming game."

A block of code is set as follows:

type Sword struct {
  name string // Important tip for RPG players: always name your swords!
}
// Damage returns the damage dealt by this sword.
func (Sword) Damage() int {
  return 2
} 
 

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

type Sword struct {
  name string // Important tip for RPG players: always name your swords!
}
// Damage returns the damage dealt by this sword.
func (Sword) Damage() int {
  return 2
} 

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: "The following excerpt is part of a system that collects and
publishes performance metrics to a key-value store."

Warnings or important notes appear like this.

Tips and tricks appear like this.