[Ruby]

class IceCreamShop 
  attr_accessor :flavors #setter/getter mathod와 instance variable 역할

  def initialize #초기 셋팅을 해줌
    @flavors = []
  end

  def add_flavor (icecream) 
    @flavors << icecream
  end

  def remove_flavor (icecream)
    @flavors.delete(icecream)
  end
end

the_freeze = IceCreamShop.new
the_freeze.add_flavor "Vanilla"
the_freeze.add_flavor "Chocolate"
the_freeze.add_flavor "Strawberry"
the_freeze.flavors
# => ["Vanilla", "Chocolate", "Strawberry"]
the_freeze.remove_flavor "Vanilla"
the_freeze.flavors
# => ["Chocolate", "Strawberry"]