Oz and Mozart Users Mailing List

Re: "or" statement


From: Denys Duchier (Denys.Duchier@ps.uni-sb.de)
Date: Thu Sep 20 2001 - 13:46:06 CEST


luque@info.ucl.ac.be (Luis Quesada) writes:

> It is clear that to keep the semantics of the or things should be in that
> way. However, once it is known a guard of the or is entailed I just see two
> options:
>
> 1. The or commits to the entailed option, which would not add any new
> information to the store.
> 2. The or keeps suspended for ever , which would not add anything new
> neither.

neither of your suggestions is faithful to the semantics.

> Could you please explain the benefits of leaving the or alive?

I already did explain the semantics several times. Please, read my
messages again.

Cheers,

-- 
Dr. Denys Duchier			Denys.Duchier@ps.uni-sb.de
Forschungsbereich Programmiersysteme	(Programming Systems Lab)
Universitaet des Saarlandes, Geb. 45	http://www.ps.uni-sb.de/~duchier
Postfach 15 11 50			Phone: +49 681 302 5618
66041 Saarbruecken, Germany		Fax:   +49 681 302 5615
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