From: Robert Feldt <feldt@...>
Date: 2001-11-11T18:43:33+09:00
Subject: [ruby-talk:24867] Re: Help needed on subclassing

On Sun, 11 Nov 2001, Aristarkh A Zagorodnikov wrote:

> class T
> 	def initialize(a, b, c)
> 		............
> 	end
> end
> 
> class S < T
> 	def self.new(c)
> 		super -12, "nothing more than a test string", c
> 	end
> end
> 
Yes, correct semantics so far.

> class M
> 	def [](arg)
> 		S.new 47
> 	end
> end
> 
But here I need to create S anew each time since the arg to [] defines
different subclasses of T. I need a kind of partial evaluation, one could
say.

So no nice solution so far. Please post if you've got other ideas.

Regards,

/Robert