Each time you evaluate the "(sxpath ...)" it does a lot of computation
to contruct a query procedure that actually can be used many times. So
you probably want to construct the query procedure only once, like:
(define my-sxpath-for-some-name-text (sxpath
"tag/tag2[$i]/tag3/name/text()"))
Also, as you do more processing of XML with the SXML tools, having
awareness of what's happening mechanically can make your Racket program
a lot faster than what a Java programmer would or could do. When
working with XML in Racket, I often mix "sxpath" with "sxml-match" and
normal Racket list processing functions.
--
http://www.neilvandyke.org/
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