プロパティをセットしたりするモジュール

propertible.rb

module Propertible

  alias propertible_original_method_missing method_missing

  def method_missing funcname, *args, &blk
    propertible_original_method_missing funcname, *args, &blk
  rescue => e
    if funcname.to_s =~ /^(.*)\=$/
      self.class.send :attr_writer, $1
      send :"#{$1}=", args[0]
    else
      self.class.send :attr_reader, funcname
      send funcname
    end
  end

end

class Person

  include Propertible

  def initialize name, age
    self.name = name
    self.age = age
  end

end

puts Person.new 'mana', 18