- From: Jos de Bruijn <debruijn@inf.unibz.it>
- Date: Sat, 12 Jul 2008 10:19:25 +0200
- To: Axel Polleres <axel.polleres@deri.org>
- CC: Stella Mitchell <cleo@us.ibm.com>, RIF <public-rif-wg@w3.org>
actually, there is a resolution saying that we need numeric-not-equal, F2F10, day 1: RESOLVED: add builtin predicates to BLD and DTB: pred:numeric-less-or-equal, pred:numberic-greater-or-equal, pred:numberic-not-equal (they amount to shortcuts, to avoid disjunction). Jos de Bruijn wrote: > >> >>> Section 4.4.2 >>> add pred:numeric-not-equal >> >> Why? It is not backed up by any XPath/XQuery function. If you think we >> need inequality-predicates per datatype, I think this should be raised >> as an issue. I do not remember any resolution which had decided to do >> such a thing. >> > > There are other functions not backed up by XQuery functions, such as > greater than or equal. > XQuery does not need numeric--not-equal, because as negation. BLD does > not have negation, so one could argue that it should be there. > In any case, numeric--not-equal can be seen as a shortcut for > "numeric-greater or numeric-less", just like numeric-greater-equal is a > shortcut for "numeric-greater or numeric-equal". The question is then: > why define a shortcut for the latter case, but not for the former? > > Best, Jos > -- Jos de Bruijn debruijn@inf.unibz.it +390471016224 http://www.debruijn.net/ ---------------------------------------------- If knowledge can create problems, it is not through ignorance that we can solve them. - Isaac Asimov
Received on Saturday, 12 July 2008 08:19:54 UTC