Re: [xsl] Evil xpath

Subject: Re: [xsl] Evil xpath
From: "Dimitre Novatchev" <dnovatchev@xxxxxxxxx>
Date: Sat, 19 Aug 2006 17:48:41 -0700
On 8/19/06, Erik Wilde <net.dret@xxxxxxxx> wrote:
 >> However, I cannot get a boolean value out of this statement.
 >> Why wont this work: preceding-sibling::*[1] = 'title'  ???
 > Because title is the name of the element, not its value.
 > You want preceding-sibling::*[1][self::title]

or exists(preceding-sibling::*[1][self::title]), if you really must get
a boolean as a result.

The context of this thread is XPath 1.0. It is perfectly correct to use:


at any place where a boolean is expected, because an empty node-set
evaluates to false() and a non-empty one to true().

Xpath 1.0 has no standard function exists().

-- Cheers, Dimitre Novatchev --------------------------------------- Truly great madness cannot be achieved without significant intelligence. --------------------------------------- To invent, you need a good imagination and a pile of junk

Current Thread