Attr_accessor on class variables

Question

attr_accessor does not work on the following code. The error says \"undefined method \'things\' for Parent:Class (NoMethodError)\":

Answer 1

Just some clarification: class variables won't be accessible using attr_accessor. It's all about instance variables:

class SomeClass
  class << self
    attr_accessor :things
  end
  @things = []
end

because in Ruby, class is an instance of the class "Class" (God, I love to say that) and attr_accessor sets accessor methods for instance variables.