> I have my <NodeID> elements already sorted.
> I am testing whether or not there are duplicate NodeIDs.
> If there are, I need to only include one of them.
> preceding:: or following:: would work.
> This works fine for small files, but the order is N^N.
> Could someone please give me some performance tips?
>
> I am using the following lines:
>      <xsl:if test = "NodeID[not(.=preceding::NodeID)]">
>      ...
>      </xsl:if>
>
Try "NodeID[not(.=preceding::NodeID[1])]"

Most processors should optimise that so they only look at the immediately
preceding node.

Mike Kay


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