믹스인(Mixin)

믹스인 소개

 믹스인의 형식

module M1
  def m1_m
    p "m1_m"
  end
end
module M2
  def m2_m
    p "m2_m"
  end
end
class C
  include M1, M2
end
c = C.new()
c.m1_m()
c.m2_m()

 ideone.com

 믹스인의 활용

module Multiply
  def multiply()
    return @v1*@v2
  end
end
module Divide
  def divide()
    return @v1/@v2
  end
end
class Cal
  include Multiply,Divide
  def initialize(v1,v2)
    @v1 = v1
    @v2 = v2
  end
  def add()
    return @v1+@v2
  end
  def subtract()
    return @v1-@v2
  end
end


c = Cal.new(100,10)
p c.add()
p c.multiply()
p c.divide()

 ideone.com