Subject: Re: [xsl] things about grouping From: Andrew Welch <andrew.j.welch@xxxxxxxxx> Date: Thu, 29 Nov 2012 08:15:14 +0000 |
> the comma operator corresponds to union written as | (by definition a > set is unordered so the additional ordering constraint imposed by the > , operator is meaningless) The comma is just a way of separating items in sequence, whereas union de-dupes and sorts into document order. select="@foo, @foo, @foo" vs select="@foo | @foo | @foo" the former selects a sequence of 3 items, the latter a sequence of 1. -- Andrew Welch http://andrewjwelch.com
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