From: "David A. Black" <dblack@...>
Date: 2003-12-15T01:14:12+09:00
Subject: Re: inplace assignment

On Mon, 15 Dec 2003, Simon Strandgaard wrote:

> On Sun, 14 Dec 2003 23:59:21 +0900, David A. Black wrote:
> >> 
> >>   class MyClass < MyClass
> > 
> > Yikes.  I *think* that resorting to that is a reasonably good
> > indication that you might want to look for a new program design :-)
> 
> irb(main):001:0> class A < A
> irb(main):002:1> def test
> irb(main):003:2> super
> irb(main):004:2> end
> irb(main):005:1> end
> TypeError: undefined superclass `A'
>         from (irb):1
> irb(main):006:0>

I assume Tom meant that A would already exist.  

> Special way of writing recursive methods/classes, which reminds me of
> modern c++ design's powerful ideas of recursive classes.
> 
> Is it possible to make classes which inherit from themselves ?

Yes, you just have to make sure the class exists in the first place
:-) But I can't imagine what good it would do.  I'm not even sure in
what sense it would be "recursive"; I think all it does is duplicate
the method search path needlessly.  


David

-- 
David A. Black
dblack@wobblini.net