From: "Peña, Botp" <botp@...>
Date: 2004-01-26T19:00:06+09:00
Subject: Re: nuby: determine method passed and determine the receiver that	 rec eived the method

Mauricio Fern�ndez [mailto:batsman.geo@yahoo.com] aka batsman humbly replied
assisted again:

> 
> batsman@tux-chan:/tmp$ ruby e.rb
> You called Dog#foo
> the dog does foo
> You called Dog#bar
> the dog does bar
> You called Dog#bar
> e.rb:21:in `method_missing': undefined method `bar' for 
> #<Dog:0x401c8034> (NoMethodError)
>         from e.rb:19:in `method_missing'
>         from e.rb:42
> batsman@tux-chan:/tmp$ expand -t2 e.rb
> 
> # keep this secret :P
> module MethodCalledMagic
>   def method_added(id)
>     @level ||= 0
>     return if @level == 1
>     @level += 1
>     alias_method "_real_#{id}", id
>     module_eval <<-EOF
>       def #{id}(*a,&b)
>         puts "You called #{self.inspect}##{id}"
>         _real_#{id}(*a,&b)
>       end
>     EOF
>     @level -= 1
>   end
> 
>   def self.extend_object(obj)
>     obj.send :define_method, :method_missing do |id,*a|
>       puts "You called #{self.class}##{id}"
>       super id
>     end
>     super
>   end
> end
> 
> # this is what your son sees
> class Dog
>   extend MethodCalledMagic   #
> end
> 
> d = Dog.new
> class Dog
>   def foo; puts "the dog does foo" end
>   def bar; puts "the dog does bar" end
> end
> 
> d.foo
> d.bar
> 
> class Dog; undef_method :bar end
> d.bar
> 
> 
> 
> You could also redefine Module#undef_method.


Wow. That was impressive.
Many thanks for the kind assistance, sir batsman.

kind regards -botp