transformer.rb

require 'json'

class Transformer
  def initialize(string)
    @string = string
  end

  def transformed_string(type)
    if type == :json
      JSON.parse(@string)
    elsif type == :binary
      @string.unpack('B*').first
    end
  end
end

t = Transformer.new('Hello')
x = t.transformed_string(:binary)

p x