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RE: [xsl] sum of products

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Steve,

> Is there another method that does not use node-set?

You could use this recursive template:

<xsl:template name="prod-sum">
  <xsl:param name="sum">0</xsl:param>
  <xsl:param name="nodes" />
  <xsl:choose>
    <xsl:when test="$nodes">
      <xsl:call-template name="prod-sum">
        <xsl:with-param name="sum" 
          select="$sum + number($nodes[1]/a) * number($nodes[1]/b)" />
        <xsl:with-param name="nodes" select="$nodes[position()!=1]" />
      </xsl:call-template>
    </xsl:when>
    <xsl:otherwise>
      <xsl:value-of select="$sum" />
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

Regards,
Marco


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