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RE: Can sets have order?
- To: xsl-list at lists dot mulberrytech dot com
- Subject: RE: [xsl] Can sets have order?
- From: Wolfgang May <may at informatik dot uni-freiburg dot de>
- Date: Fri, 2 Feb 2001 11:30:14 +0100 (MET)
- References: <20010202095839.1061.qmail@web6301.mail.yahoo.com>
- Reply-To: xsl-list at lists dot mulberrytech dot com
Dimitre Novatchev writes:
> >There is no query which yields visibly different results.
>
> ?????
>
> There are ***many*** Xpath expressions, which will produce different
> results when you swap the two nodes:
>
> 1. generate-id($node)
>
> 2. count($node/preceding::node())
>
> 3. count($nodeset[position() < 4 and count(preceding::*) = $num1])
These all are *relative* expressions - so these queries use the
_premise_ the nodes can be distinguished to show that they can be
distinguished.
For all (absolute) queries on the document
//path/one-of-the-above-expressions
there is no difference if the nodes are exchanged.
Wolfgang
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