First Glance Differences

• Sigils indicate scope not type

  • @ instance variable
    

  • $ global variable
    

  • @@ class variable
    

• semicolons optional
• parens around method arguments optional
• interpolation operator #{}

  • puts "At the tone the time will be: #{Time.now}\a"
    

• 'What is Truth?'
  • In Ruby only false and nil are false (so the values 0,"0" and "" are true in Ruby)
• pretty much everything is an object:

  • 3.times { |i| puts i }