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[xsl] XPath or xsl to count a number of distinct values of an attribute?


Subject: [xsl] XPath or xsl to count a number of distinct values of an attribute?
From: Lech Rzedzicki <xchaotic@xxxxxxxxx>
Date: Tue, 28 Feb 2012 12:39:02 +0100

Hi.
Hopefully a very quick question:
I have an attribute such as @class, which may have a value "h1", "H2" etc.
I want to calculate how many distinct values are there so that "H2"
and "h2" are counted as two occurrences, but following occurrences of
either do not increment a counter.
Basically a quality metric for a consistency of a document.

Is it possible with Xpath alone? (sth like count(distinct-values(//@class)) ?)

Lech


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