Codectionary / Developer documentation / Ruby

Ruby booleans and nil

Ruby reference for ruby booleans and nil.

Syntax

active = true
missing = nil
puts active && !missing

Examples

Ruby booleans and nil example

A focused example you can adapt while practising.

active = true
missing = nil
puts active && !missing

Best practices

  • Start with the smallest working example, then adapt it to your project.
  • Use the language’s standard library and idioms before introducing extra dependencies.

Runtime & versions

Ruby interpreter. Feature availability depends on the language and runtime version used by your project; consult the official reference below.

Ruby documentation

Specifications & further reading