From: "Mauricio Fernández" <batsman.geo@...>
Date: 2003-02-04T02:12:00+09:00
Subject: Re: Fun with singletons' singleton classes

On Tue, Feb 04, 2003 at 01:05:50AM +0900, ts wrote:
> >>>>> "M" == Mauricio =?iso-8859-1?Q?Fern=E1ndez?= <Mauricio> writes:
> 
> M> class A
> 
>       def self.singleton_method_added id
>          puts "Adding singleton method #{id} to #{self}"
>       end
> 
> M>   def self.method_added id
> M>     puts "Adding method #{id} to #{self}"
> M>   end
> 

How do I do within singleton_method_added to remove a singleton method
if it matches some :name?

I tried 

class << self
  def singleton_method_added i
    remove_method i if i == :method_added
  end
end

and (more sensible)

def singleton_method_added i
  (class << self; self; end).instance_eval <<-EOF 
    remove_method :#{i.to_s} if :#{i.to_s} == :method_added
   EOF
end

I want to render impossible to redefine SomeClass.method_added without
freezing the singleton of SomeClass.

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