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Re: Does the count() function require access to the wh

Subject: Re: Does the count() function require access to the whole subtree?
From: Michael Kay <mike@xxxxxxxxxxxx>
Date: Tue, 14 Jan 2014 12:26:06 +0000
Re:  Does the count() function require access to the wh
On 14 Jan 2014, at 10:11, Costello, Roger L. <costello@xxxxxxxxx> wrote:

> Yesterday Michael Kay wrote:
> 	//x is a "crawling" expression - one that selects
> 	nodes which may overlap each other.
> Michael, I do not understand what you mean by "overlap". It seems like an
important concept, since you have used that word repeatedly.

I mean that within the set of nodes selected by //x, there may be two nodes A
and B such that A is an ancestor of B.

(I'm not using the term overlap in the sense of non-hierarchic markup: perhaps
that's the cause of any confusion).

Michael Kay

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