From: Daniel Carrera <dcarrera@...>
Date: 2003-08-01T07:04:34+09:00
Subject: Re: Extracting a parent class

Answer:
a = b.class.superclass.new

Why:
b.class == B
b.class.superclass == A
b.class.superclass.new == A.new

Cheers,
Daniel.

On Fri, Aug 01, 2003 at 06:53:01AM +0900, Michael Garriss wrote:
> Sorry about the newbie question but....
> 
> class A
>  attr_accessor :a
> end
> 
> class B < A
>  attr_accessor :b
> end
> 
> b = B.new
> b.a = "some data"
> b.b = "some more data"
> a = b.?????
> 
> How do I set 'a' from 'b' so that a is of class A and not class B?  I 
> don't want the extra info, I want just the subset of members found in 
> the parent class.  Is there a way to cast?
> 
> TIA
> Michael Garriss
> 

-- 
Daniel Carrera | PGP: 6643 8C8B 3522 66CB D16C D779 2FDD 7DAC 9AF7 7A88
Math PhD. UMD  | http://www.math.umd.edu/~dcarrera/pgp.html

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