Subject: Re: [xsl] Re: Benefits of xsl.sequence From: "Andrew Welch" <andrew.j.welch@xxxxxxxxx> Date: Tue, 30 Sep 2008 09:17:39 +0100 |
>> <xsl:function name="t:add" as="xs:integer"> [snip] > Why is <xsl:sequence select="$first + $second"/> more efficient than > <xsl:value-of select="$first + $second"/>? It's more efficient because no atomization needs to happen: you've specified a return type of xs:integer, so the text node created by xsl:value-of needs to be converted to an xs:integer before its can be returned. Using xsl:sequence creates just the atomic value. > I can understand that math on atomic values ought to be more efficient > than math on text nodes, but is the benefits something we can measure > in any meaningful sense? You could try writing a Soduku solver where the input and intermediate steps are represented using nodes, realise how slow it is, then switch to using atomics and see the improvement :) http://andrewjwelch.com/code/xslt/sudoku/sudoku-solver.html -- Andrew Welch http://andrewjwelch.com Kernow: http://kernowforsaxon.sf.net/
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