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: "In our context, the types of STDIN, STDOUT, and STDERR are actually instantiations of IO::FileDescriptor."

A block of code is set as follows:

require "./transform"
 
STDOUT.puts Transform::Processor.new.process STDIN.gets_to_end

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

require "./transform"
 
STDOUT.puts Transform::Processor.new.process STDIN.gets_to_end

Any command-line input or output is written as follows:

---
- id: 2
  name: Jim
- id: 3
  name: Bob

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: "Open Windows PowerShell and select Run as Administrator."

Tips or Important Notes

Appear like this.