From: John Feminella <johnf@...>
Date: 2011-06-05T21:55:16+09:00
Subject: Re: Class instance method

In the case of a method they're approximately the same:

==== begin snippet ====
module M
  def self.foo; "foo"; end
end

M.foo
# => "foo"

M::foo
# => "foo"
==== end snippet ====

But sometimes you want to access _constants_, not methods. Then
they're drastically different:

==== begin snippet ====
module M
  module Inner; end
end

M::Inner
# => M::Inner

M.Inner
# => NoMethodError: undefined method `Inner' for M:Module
==== end snippet ====
--
John Feminella
Principal Consultant, BitsBuilder
LI: http://www.linkedin.com/in/johnxf
SO: http://stackoverflow.com/users/75170/