Subject: Re: [xsl] removing duplicates from a sequence while retaining order From: Andrew Welch <andrew.j.welch@xxxxxxxxx> Date: Tue, 9 Oct 2012 09:47:18 +0100 |
> If I'm not allowed to put the sequence into a variable, but I am allowed to > duplicate the sequence in the expression: > > T:\ftemp>xslt2 david2.xsl david2.xsl > <?xml version="1.0" encoding="UTF-8"?>Matthew Mark Luke John > T:\ftemp>type david2.xsl > <?xml version="1.0" encoding="UTF-8"?> > <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" > version="2.0"> > > <xsl:template match="/"> > <xsl:value-of > select="('Matthew','Mark','Luke','Matthew','John')[position() = > index-of(('Matthew','Mark','Luke','Matthew','John'),.)[1]]"/> > </xsl:template> > > </xsl:stylesheet> > T:\ftemp> > > I don't think I can do it otherwise, but I only have five minutes this > evening to look at this. I can't think of an xpath 2.0 without duplicating the sequence either.. but with xpath 3.0 we can do: fold-right(function($i, $j) { $i[not(index-of($j, $i))], $j }, (), ('Matthew','Mark','Luke','Matthew','John') ) -- Andrew Welch http://andrewjwelch.com
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