RE: add variables

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Subject: RE: add variables
From: Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>
Date: Tue, 17 Jul 2001 18:40:07 -0400

Zongqing:

At 05:49 PM 7/17/01, you wrote:

Thanks. Now another question:

How to do the counter increment?
        <xsl:variable name="counter">1</xsl:variable>
        $counter=$counter + 1

Oops. A FAQ. You can't: that's not the way XSLT is designed to work.

If you could describe why (you think) you need to increment the counter, someone can undoubtedly suggest how else to approach your problem. In general, XSLT assumes processing can and should be driven by the content of the source tree (element and attribute types, their order and position, etc. etc.), not by some processing logic in the stylesheet. That is, whatever it is that you need to track by incrementing a counter, you probably don't need to track it, since the information's already available to you. (Only in extreme cases does one use recursion and have to track things otherwise.)

Check out the XSL FAQ, there's some commentary in there on this issue (deep in the section on variables).

Cheers,
Wendell

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Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
Mulberry Technologies, Inc.                http://www.mulberrytech.com
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XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list

Current Thread
Re: add variables, (continued) David Carlisle - Wed, 18 Jul 2001 04:17:39 -0400 (EDT) Crowers, Steve - Tue, 17 Jul 2001 16:58:21 -0400 (EDT) David Carlisle - Wed, 18 Jul 2001 04:20:59 -0400 (EDT) Chen, Zhongqing - Tue, 17 Jul 2001 17:53:34 -0400 (EDT) Wendell Piez - Tue, 17 Jul 2001 18:47:54 -0400 (EDT) <= David Carlisle - Wed, 18 Jul 2001 04:30:06 -0400 (EDT)

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