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From: Kai-Martin Knaak <knaak AT iqo DOT uni-hannover DOT de>
Subject: Re: Objects of objects (was Re: [geda-user] The state of gEDA/gaf (Was gEDA/PCBs diversity, Was: Pin hole size))
Date: Thu, 01 Nov 2012 15:06:26 +0100
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Reply-To: geda-user AT delorie DOT com

Karl Hammar wrote:

>> For some reason, Karls post does not show in my reader...
>
> Maybe I've been quiet, or what do you mean ?

It did not show because of the storm in the US.


>> You can put symbols into symbols.
> ...
> 
> Yes, but last time I raised the issue (see thread starting at [1])
> it was considered a bug.

Well, this discussion also contains me explain, why it is a feature :-)


> And if you look at [2] it is specifically
> forbidden. A first step would be to remove that ban.

+1


>> Real recursion would involve symbols that contain themselves. This can
>> only be meaningful if there is some kind of break condition. Infinite
>> recursion works only in pure mathematics... Can you give an example of
>> a use case where real recursion with a break condition would be
>> useful?
> 
> No, not now, but I see no reason to outlaw it.

The break condition would need to be implemented. Until it is, you'd be 
stuck in an endless loop.

---<)kaimartin(>---