Fastest/One-liner way to list attr_accessors in Ruby?

Question

What\'s the shortest, one-liner way to list all methods defined with attr_accessor? I would like to make it so, if I have a class MyBaseClass, any

Answer 1

Following up on Christian's response, but modifying to use ActiveSupport::Concern...

module TrackAttributes
  extend ActiveSupport::Concern

  included do
    define_singleton_method(:attr_reader) do |*params|
      @attr_readers ||= []
      @attr_readers.concat params
      super(*params)
    end

    define_singleton_method(:attr_writer) do |*params|
      @attr_writers ||= []
      @attr_writers.concat params
      super(*params)
    end

    define_singleton_method(:attr_accessor) do |*params|
      @attr_accessors ||= []
      @attr_accessors.concat params
      super(*params)
    end
  end

  def attr_readers
    self.class.instance_variable_get('@attr_readers')
  end

  def attr_writers
    self.class.instance_variable_get('@attr_writers')
  end

  def attr_accessors
    self.class.instance_variable_get('@attr_accessors')
  end

end