From: Markus Jais <info@...>
Date: 2002-01-21T00:14:09+09:00
Subject: Mixin question

hello

lets say I have this module

module Mod
   def mod_meth
          puts "in MyMod#meth3"
   end
end


what is the difference between

class Cla
    class << self
        include Mod
    end
end

and

class Cla
   extend Mod
end


the output is always 

/home/markus/ruby/own$  ./mixin.rb
in MyMod#meth3

best regards
markus