Re: the nearest ancestor with the attribute

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Subject: Re: the nearest ancestor with the attribute
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Thu, 18 Jan 2001 10:20:50 -0500

At 01/01/18 13:07 +0000, Jeni Tennison wrote:

Since I started this confusion in the first place, can I summarise and
check that I've got it right now?

A node set is always unordered until you do anything with it like
iterate over it, get a value from it or whatever.

I find it is more succinct to say: "Nodes from the attribute and namespace axes are always in an arbitrary implementation-defined order, while nodes from all other axes are in proximity order within location step expressions and in document order in location path expressions."

Note that attribute and namespace axes are *not* unordered (you can index into them), just that the order cannot be relied upon. There is an important nuance.

Since a predicate can be applied to a location path expression, as in the union of two other path expressions, that predicate is always evaluated in document order.

xsl:value-of and xsl:for-each deal with location path expressions (not location step expressions), therefore their evaluation is done in document order.

This has proven to be a simple rule-of-thumb for students.

.................... Ken


--
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Current Thread

RE: Can sets have order?, (continued)
- DPawson - Thu, 18 Jan 2001 07:15:48 -0500 (EST)
  - Jeni Tennison - Thu, 18 Jan 2001 08:17:19 -0500 (EST)
    - David Carlisle - Thu, 18 Jan 2001 08:51:21 -0500 (EST)
    - G. Ken Holman - Thu, 18 Jan 2001 10:21:11 -0500 (EST) <=
    - Jeni Tennison - Thu, 18 Jan 2001 11:28:21 -0500 (EST)
    - G. Ken Holman - Thu, 18 Jan 2001 15:06:06 -0500 (EST)
    - David Carlisle - Fri, 19 Jan 2001 04:34:30 -0500 (EST)
- Oliver Becker - Thu, 18 Jan 2001 10:49:37 -0500 (EST)

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Re: the nearest ancestor with, David Carlisle	Thread	Re: the nearest ancestor with, Jeni Tennison
Re: the nearest ancestor with, Dimitre Novatchev	Date	Re: copy all attributes but o, Jeni Tennison
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