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Re: User defined operations and PREMISES keyword

From: Dan Connolly <connolly@w3.org>
Date: Thu, 12 May 2005 09:24:32 -0500
To: Stephane Fellah <stephanef@imagemattersllc.com>, public-rdf-dawg-comments@w3.org
Message-Id: <1115907872.13402.383.camel@localhost>

Your message of 20 Apr continues...
http://lists.w3.org/Archives/Public/public-rdf-dawg-comments/2005Apr/0038.html

> ISSUE 2: OPTIONAL OR NULL PARAMETERS.

>The other issue is how optional or null  parameter are set in the functions.

I don't understand how this issue arises. Functions may be
variadic, so you can just omit the last argument...

        FILTER fn:withinDistance(?g1,
<http://www.foo.org/userdefined#p1>,10) 

>I can see two alternatives: using null or using blank parameter ...

-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
D3C2 887B 0F92 6005 C541  0875 0F91 96DE 6E52 C29E
see you at XTech in Amsterdam 24-27 May?
Received on Thursday, 12 May 2005 14:24:39 GMT

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