From: Austin Ziegler <halostatue@...>
Date: 2005-05-28T00:15:45+09:00
Subject: Re: Difference between 'def self. …' and module_function …

On 5/27/05, Nikolai Weibull<mailing-lists.ruby-talk@rawuncut.elitemail.org> wrote:> I thought I new the difference between writing> module A>   def self.a>     ���>   end> end> > and>   module B>   def a>     ���>   end> >   module_function :a> end
Module A defines only A.a. Module B defines B#a and B.a. B.a is a copyof B#a at the time of the call to module_function and B#a is madeprivate (according to the documentation).
module A  def self.a    puts "#{self.inspect}.a"  endend
module B  def a    puts "#{self.inspect}.a"  end  module_function :aend
A.methods(false) # -> [ "a" ]B.methods(false) # -> [ "a" ]B.instance_methods(false) # -> []B.private_instance_methods(false) # -> ["a"]A.a # -> A.aB.a # -> B.ao = Object.newo.extend(B)o.send(:b) # -> #<Object:0x2b3fe38>.a
Does that make it clearer?
-austin-- Austin Ziegler * halostatue@gmail.com               * Alternate: austin@halostatue.ca