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Re: [xsl] Predicates

Subject: Re: [xsl] Predicates
From: David Carlisle <davidc@xxxxxxxxx>
Date: Fri, 7 Jan 2005 16:12:13 GMT

> I have tried several combinations, but none work...am I heading in the right
> direction?

The boolean operator for or is or not | (not sure why so many people miss

[not(name='Frank Lampard' or  name=' Damian Deff')]


[(name!='Frank Lampard') and  (name!=' Damian Deff')]

although beware of using != ever in Xpath unless you are sure you know
what you are doing. It has quite entertaining meaning and in the cases
where it isn't the same as using not (   =    ) it almost always doesn't
do what you want, so I find it's better to simply always use  not() and
= rather than !=.

Of the things you tried:

[name!='Frank Lampard | Damian Duff']

That is legal and tests that every name element is not equal to teh
string 'Frank Lampard | Damian Duff'

[name!='Frank Lampard' | name!=' Damian Duff']

that is a syntax error as | is set union and can only be applied to node
sets, not to boolean expressions.


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