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Re: Equivalent of a Global Counter

Subject: Re: Equivalent of a Global Counter
From: David Carlisle <davidc@xxxxxxxxx>
Date: Tue, 14 Nov 2000 01:03:17 GMT
xslt decrement counter


> can you think of a way of incrementing a number in an
> element match without having that same number decrement on element exit.
> Cheers,

That would clearly be a side effect if the template so not possible in
XSLT which is side effect free, unless you use an extension function.

But what you ask for is an undefined random output, as the templates 
for the various elements may be executed in any order, or concurrently
and needn't be executed in the same order if the same file is processed
again.

You can of course preserve the state by passing the number as a
parameter in every apply-templates and declaring it as a parameter to
every template, but this is rarely the best way of tackling a problem.

David

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