Re: [xsl] Correcting a prior error

[Michael Kay <mike@xxxxxxxxxxxx>]

On 30/07/2010 16:43, Wendell Piez wrote:
> At 05:44 AM 7/30/2010, Dave wrote:
> > Or change this to count(ancestor::*|preceding::*) + 1?
>
> Or count(ancestor-or-self::*|preceding::*)
>
> Or count(.|ancestor::*|preceding::*) ... :-)

Or count(ancestor::*) + count(preceding::*) + 1 to avoid the cost of 
unnecessarily sorting into document order, merging the lists, and 
eliminating the non-existent duplicates. (That's one reason I suggested 
xsl:number. Another, more important, is that in Saxon, xsl:number is 
optimized so that when you make repeated calls with the same attributes 
to number successive nodes, Saxon doesn't count all the nodes from the 
beginning of the document each time, it only counts back to the most 
recently numbered node).

Michael Kay
Saxonica