An Overview of Ruby

"Hello, World!" in Ruby

puts "Hello, world!"

Other Sample Code

class KaraokeSong < Song
     @@plays = 0
     def initialize(name, artist, duration)
          @name = name
          @artist = artist
          @duration = duration
          @plays = 0
     end
     def play
          @plays += 1
          @@plays += 1
          "This song: #@plays plays. Total #@@plays plays."
     end
end