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Another question re: ACTION-920

From: Axel Polleres <axel.polleres@deri.org>
Date: Sun, 20 Sep 2009 10:33:15 +0100
Cc: "RIF (E-mail)" <public-rif-wg@w3.org>
Message-Id: <060E35D7-B986-4D12-9483-BBB9CCFCD225@deri.org>
To: Sandro Hawke <sandro@w3.org>
Sandro,

was there a reason why you specified the domain of the position  
argument in

    http://www.w3.org/2005/rules/wiki/DTB#func:get

to be xs:int?

I changed that to xs:nonNegativeInteger, since it made more sense to me.

Please acknowledge.

Axel

On 20 Sep 2009, at 08:40, Axel Polleres wrote:

> Started to clean up DTB wrt. List functions and predicates... cf.  
> ACTION-920
>
> Question: Is
>
> External( pred: is-list( List ( 1 | 2 ) ) )
>
> true or false or undefined? From the current informal definition  
> this is not clear.
>
> I adapted the definition of
>  http://www.w3.org/2005/rules/wiki/DTB#pred:is-list
> assuming the former.
> Further, I added the following examples to the definition of is-list  
> in DTB:
>
>   is-list(List(0 1 2 | List(3 4))) = True
>   is-list(List(1 | 2)) = True
>
> BTW, this is not RIF syntax, so the examples for lists in the  
> document need to be
> in proper RIF presentation syntax,  ie. instead it should be:
>
>  External(pred:is-list(List(0 1 2 | List(3 4)))) will evaluate to t  
> in any interpretation.
>  External(pred:is-list(List(1 | 2))) will evaluate to t in any  
> interpretation.
>
>
> I am not sure whether I manage to clean up all list functions, but I  
> think we cannot have
> examples in the document which aren't valid for any syntax we  
> support, so at least the examples should be cleaned up.
> Given ambiguities of the informal mappings like thes further  
> convinces me that it we
> probably don't want the informal mappings in the spec. Opinions?
> (I am still not sure how far I get with the cleaning...)
>
>
> Axel
>
>
>
> -- 
> Dr. Axel Polleres
> Digital Enterprise Research Institute, National University of  
> Ireland, Galway
> email: axel.polleres@deri.org  url: http://www.polleres.net/
>
>
>

-- 
Dr. Axel Polleres
Digital Enterprise Research Institute, National University of Ireland,  
Galway
email: axel.polleres@deri.org  url: http://www.polleres.net/
Received on Sunday, 20 September 2009 09:33:57 GMT

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