On Thu, Mar 13, 2014 at 11:56 AM, David Carlisle
<davidc(_at_)nag(_dot_)co(_dot_)uk> wrote:
On 13/03/2014 11:38, Ihe Onwuka wrote:
By all means reply but from an educational perspective point out that
your preference for for-each-group, has no set-theoretic
interpretation,
It's iterating through representatives of the quotient set if you factor
by the relation implied by the group-by clause.
A union (B difference A). People who speak English will understand that.
will not work for anybody restricted to XSLT 1.0
It's easy to rewrite any such use of for-each-group as xsl-for-each plus
a filter using a key (look up muenchian grouping for the details)
Easy for who?
Where's that quote from Mike Kay that use of xsl:key should be common
knowledge in XSLT development - which obviously suggests that it is
not.
and does not port to XPATH or XQuery.
For xquery you can use the similar group-by clause so long as you
are using V3 http://www.w3.org/TR/xquery-30/#id-group-by
For the cognoscenti who have access to 3.0 processors, the same group
of people that almost have nothing to learn from reading any of this.
--~------------------------------------------------------------------
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to: http://lists.mulberrytech.com/xsl-list/
or e-mail: <mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--