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RE: [xsl] String comparison


Subject: RE: [xsl] String comparison
From: "Michael Kay" <mhk@xxxxxxxxx>
Date: Mon, 13 Oct 2003 17:49:07 +0100

> 
> I am trying to comparing to see is a string is null,

There is no such thing as "null" in the XPath data model. Do you mean
the string is empty (zero-length?)
> 
> I have a param named userid, i want to check to see if 
> '$userid' is not null.
> 
> I tried <xsl:if test="$userid!=''>, this does'nt seem
> to help.
> 
Show us how $userid is declared.

I suspect I can guess the answer: it is a result tree fragment, not a
string.

Michael Kay


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