From: Carmine Moleti <carmineaskme@...>
Date: 2005-11-15T22:22:16+09:00
Subject: module_function question

Hi to everyone,

let's say I've the following astonishing module:

------------------------------------------------------
module Mod	# contained in the file "mymodule.rb"
   CONST = 1974

   def initialize()
     @initialized_value=892
   end

   def metodo1()
     puts "this is metodo1"
   end

   class MyModClass
     attr_reader :mymodclass_value
     def initialize()
       @mymodclass_value = 2005
     end
   end

   module_function :metodo1

end
------------------------------------------------------

is it correct that "module_function :metodo1" should allow me to access 
to "metodo1" the following ways:

------------------------------------------------------
require 'mymodule'

Mod.metodo1()	# This is Ok, and works as expected

class MyClass
   include Mod
   attr_reader :myclass_value
   attr_reader :initialized_value
   def initialize()
     super()
     @myclass_value = Mod::CONST
   end
end

temp = MyClass.new()

temp.metodo1() # without the module_function, this works!
------------------------------------------------------

Why the line "temp.metodo1()" gives the error:
"Private method 'metodo1' called for..." ?

The Pickaxe book states that using "Module#module_function" actually 
makes a copy of the methods and not an alias.


Thanks again for your help.
Regards,
Carmine