From: Paul McMahon <pm@...>
Date: 2008-06-09T12:35:25+09:00
Subject: Singleton object vs. enhancing singleton class

In ruby, as class are singleton objects, does anyone have any ideas when
a a singleton object should be used vs. simply adding methods to the
class?  For example,

class Foo
  include Singleton
  def bar
  end
end

vs.

class Foo
  def self.bar
  end
end