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Re: [TF-LIB] first text for new library built-in functions

From: Gregory Williams <greg@evilfunhouse.com>
Date: Thu, 3 Jun 2010 15:43:41 -0400
Cc: SPARQL Working Group WG <public-rdf-dawg@w3.org>
Message-Id: <3E1FB2BC-6F6B-4075-8C08-A107A1E5A979@evilfunhouse.com>
To: Andy Seaborne <andy.seaborne@talis.com>
On Jun 3, 2010, at 3:39 PM, Gregory Williams wrote:

> On Jun 3, 2010, at 3:34 PM, Andy Seaborne wrote:
> 
>> The prototype definitions define the types of arguments accepted by the function and that after evaluation of expressions.
> 
> Ah, sorry. My mistake. I was misunderstanding the blockquoted prototypes in each section as something closer to grammar definitions (but didn't bother to actually check the grammar).

After saying that, I think I'm still confused. Aren't IN and NOT IN similar to IF and COALESCE in that they treat evaluation errors differently?

2 IN (1/0, 2) yielding true seems like IN would have to function like COALESCE. Have I misunderstood how the evaluation happens?

thanks,
.greg
Received on Thursday, 3 June 2010 19:44:13 GMT

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