gistfile1.rb

class Object
  def self.gimme_attrs(attr)
    define_method("#{attr}") do
      instance_variable_get "@#{attr}"
    end

    define_method("#{attr}=") do |attribute|
      instance_variable_set :"@#{attr}", attribute
    end
  end
end

class Person
  gimme_attrs :name

  def initialize(name)
    @name = name
  end
end

p = Person.new('Frank')
puts p.name
p.name = 'Sam'
puts p.name