Conventions used

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

Code in text: 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: "A table view is usually represented by UITableViewController, which is also the data source and delegate for the table view."

A block of code is set as follows:

// APIClient.swift
lazy var geoCoder: GeoCoderProtocol
  = CLGeocoder()

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

mkdir src/client/apollo touch src/client/apollo/index.js

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: "From the Details screen, the user will be able to check an item."

Tips or Important Notes

Appear like this.