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Re: [xsl] How many passes through the document

Subject: Re: [xsl] How many passes through the document
From: Liam R E Quin <liam@xxxxxx>
Date: Sun, 23 Sep 2012 00:44:01 -0400

On Sun, 2012-09-23 at 01:03 +0100, Ihe Onwuka wrote:
> Of course if I had written it like this with the variable local
> instead of global I wouldn't be asking the question.
> So I guess the question is whether the global version entails an extra
> pass over the data or any other performance penalty.

Measure it and see. With declarative / non-procedural languages,
performance is often more about the implementation and what it optimizes
than anything else. For example, some XSLT implementations build a table
of elements in the document as the document is loaded, and others don't.


Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/
Pictures from old books: http://fromoldbooks.org/
Ankh: irc.sorcery.net irc.gnome.org freenode/#xml
Co-author, 5th edition of "Beginning XML", Wrox, Summer 2012

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