From: walter@...
Date: 2004-07-03T21:32:56+09:00
Subject: Re: define_method to add a Class method?


> Hi,
> 
> At Sat, 3 Jul 2004 08:46:48 +0900,
> walter@mwsewall.com wrote in [ruby-talk:105154]:
> > def create(data)
> >   Class.new do
> >     my_lambda = lambda{data}
> >     define_method("instance", my_lambda)  #this is fine
> >     
>       (class << self; self; end).class_eval do
> >       define_method("ok_method"){"ok method"}  #this is fine
> >       define_method("data_passed_in", my_lambda) 
> >     end
> >   end
> > end
> 
> Or:
> 
>   class Result
>     def instance
>       self.class.data_passed_in
>     end
>     class << self
>       def ok_method
>         "ok_method"
>       end
>       def data_passed_in
>         @data
>       end
>     end
>   end
> 
>   def create(data)
>     Class.new(Result) {@data = data}
>   end
> 
> -- 
> Nobu Nakada
> 


Thanks Nobu,

The part I missed was setting @data within the scope of the new 
class.
so this now works..
  def create(data)
    Class.new do
      @data = data
      class << self
        define_method("data_passed_in"){@data}
      end
      define_method("q"){"we are in q"}
    end
  end

  create("some data").data_passed_in

Now that I look at it this morning I can't believe I missed that.
Also I didn't realize that you could pass in a Class while creating 
an anonymous class and extend that in the body of new.  Very cool.


Thanks again,  I knew I was missing something.


Walt
*****************************************************
Walter Szewelanczyk
IS Director
M.W. Sewall & CO.        email : walter@mwsewall.com     
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