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Re: n-triples for datatype values [was: Agenda for RDFCore WG Telecon 2002-10-18]

From: Jos De_Roo <jos.deroo.jd@belgium.agfa.com>
Date: Sat, 2 Nov 2002 00:59:48 +0100
To: timbl@w3.org
Cc: "Graham Klyne" <Graham.Klyne@MIMEsweeper.com>, w3c-rdfcore-wg@w3.org, w3c-rdfcore-wg-request@w3.org
Message-ID: <OFE4E3D201.2F0843B7-ONC1256C64.00826BA5-C1256C65.0000007F@agfa.be>


right, so a standards body compliant implementtion
of an engine could do with that; that's what I thouhgt
when you said fixed set of datatypes
I think RDF is a rather neat way to extend on those ;-)
We also experimented with one generic numeral
type (and used single quotes for that e.g :Jenny :age '10'
where the '10' or the '+1.00E1' denotes the number 10)
which is actually always an internal double with a
slightly restricted interval for long and unsignedLong
but had some locale issues with C# (not with Java)
in that it forced to write '10,0' while in Belgium)

-- ,
Jos De Roo, AGFA http://www.agfa.com/w3c/jdroo/


                                                                                                                        
                    "Tim Berners-Lee"                                                                                   
                    <timbl@w3.org>            To:     "Jos De_Roo" <jos.deroo.jd@belgium.agfa.com>, "Graham Klyne"      
                    Sent by:                   <Graham.Klyne@MIMEsweeper.com>                                           
                    w3c-rdfcore-wg-requ       cc:     <w3c-rdfcore-wg@w3.org>                                           
                    est@w3.org                Subject:     Re: n-triples for datatype values [was: Agenda for RDFCore   
                                               WG  Telecon 2002-10-18]                                                  
                                                                                                                        
                    2002-11-01 11:31 PM                                                                                 
                                                                                                                        
                                                                                                                        





I think fixed in this case means "a small number extended by standards body
work",
rather than 'anyone can make a new one".  Interoperability at the atomic
datatype
level is important.  But maybe I am being near-sighted.  In languages like
python
it is important to have a very well-defined common set of atomic datatypes,
but the again the ability to make new ones is rather neat.

I guess I could imagine the implementations of code for integer, real,
floating point
and rational arithmetic being handled as optimizations.

Tim

----- Original Message -----
From: "Graham Klyne" <Graham.Klyne@MIMEsweeper.com>
To: "Jos De_Roo" <jos.deroo.jd@belgium.agfa.com>
Cc: <w3c-rdfcore-wg@w3.org>; "Tim Berners-Lee" <timbl@w3.org>
Sent: Friday, November 01, 2002 4:58 AM
Subject: Re: n-triples for datatype values [was: Agenda for RDFCore WG
Telecon 2002-10-18]


> At 01:31 AM 11/1/02 +0100, Jos De_Roo wrote:
> > > I feel that "^^", being syntactic, should only be usable with a
> > > fixed set of type URIs.
> >
> >that's indeed better
>
> I have a concern with that.  For example rational values as described in
> CC/PP.  I'm rather concerned that the type system would be closed.
>
> [later]
>
> Or does "fixed" in this context mean non-variable?  I have no problem
with
> that.
>
> #g
>
>
> -------------------
> Graham Klyne
> <GK@NineByNine.org>
>
Received on Friday, 1 November 2002 19:05:21 EST

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