Re: [xsl] Can someone explain this generate-id and key xsl fragment to me?

[David Carlisle <davidc@xxxxxxxxx>]

On 28/02/2014 18:17, russurquhart1@xxxxxxxxxxx wrote:
>   Hi,
>
> I'm having to manage an xslt that someone else wrote, that generally works correctly, but when it doesn't i have problems.
>
> In one template that is a for-each command that is executed. The line is:
>
> <xsl:for-each select="//errata_section[generate-id(.)=generate-id(key('module-index', module_impacted)[1])]">
>   <xsl:sort select="module_impacted"/>



That is the standard idiom known as Muenchian grouping (google for it) 
that was used to group items (or remove duplicates0 in XSLT 1. It is 
largely replaced by xsl:for-each-group in XSLT2.