Initializing Instance Variables Defined by a Module : Modules Creation « Language Basics « Ruby






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  3. Modules Creation

Initializing Instance Variables Defined by a Module


module Timeable
 attr_reader :time_created

  def initialize
    @time_created = Time.now
  end

  def age      #in seconds
    Time.now - @time_created
  end
end

class Character
  include Timeable
  attr_reader :name
  def initialize( name )
    @name = name
    super() #calls Timeable's initialize
  end
end

c = Character.new "Fred"
c.time_created
# => Mon Mar 27 18:34:31 EST 2006

p Character.ancestors               #  => [Character, Timeable, Object, Kernel]








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