count() vs. xsl:number (was: Measuring performance)

While writing about performance measurement, Joe Ortiz said:
>Also, there are a few resources that indicate the efficiency
>of using certain commands over others (ie using count instead
>of xsl:number for certain applications).

If you have a situation where either count() or xsl:number
can do the job, I would certainly favor count!! I discourage
the use of xsl:number for simple counting, because it's so
big and featureful. It's purpose is to generate output
numbering when you need to display all individual items in
a set and number them. The count() function is simple and,
depending on the argument, may be able to take advantage of
prior counting activity that occurred.
.................David Marston


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