[racket] sxml parsing

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/