Mega Code Archive

 

Categories / Ruby / Collections

 

Include Comparable

class CD   include Comparable   @@plays = 0   attr_reader :name, :artist, :duration   attr_writer :duration   def initialize(name, artist, duration)     @name     = name     @artist   = artist     @duration = duration     @plays    = 0   end   def to_s     "CD: #@name--#@artist (#@duration)"   end   def duration_in_minutes=(new_duration)     @duration = (new_duration*60).to_i   end   def play     @plays  += 1       @@plays += 1     "This  CD: #@plays plays. Total #@@plays plays."   end   def inspect     self.to_s   end   def <=>(other)     self.duration <=> other.duration   end end d = CD.new("A", "B", 1) d.to_s