Subject: Re: [xsl] Fundimentle Predicate Problem or Bug?? From: David Carlisle <davidc@xxxxxxxxx> Date: Thu, 18 Sep 2008 17:32:39 +0100 |
> It does pose an interesting question though, because in my case surely > > Race/RaceType >= 'R' and Race/RaceType <= 'R' > > AND > > Race/RaceType >= 'R' or Race/RaceType <= 'R' > > would do the same? no the first is true just if both branches are true, and the second is true if either branch is true. > Which is fine in the XSLT world but try > explaining that to the logic gurus! the operators follow standard propositional calculus here, so long as you remember that sequence operator value means exists x in sequence such that x operator value. so in your case Race/RaceType >= 'R' means (and could be written in xpath as) some $r in Race/RaceType satisfies ($r >= 'R') David ________________________________________________________________________ The Numerical Algorithms Group Ltd is a company registered in England and Wales with company number 1249803. The registered office is: Wilkinson House, Jordan Hill Road, Oxford OX2 8DR, United Kingdom. This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. ________________________________________________________________________
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