Thanks - did not post reply properly - this is very useful, as is the prior example in a different way (yours does not seem to allow the list of iteration variables to be provided dynamically, e.g., as a list, the prior has no such list, but I can index into the values). Both can fit my needs though. What a great user group! Thanks again, Rob <div class="gmail_quote">On Tue, Mar 13, 2012 at 5:09 PM, Matthias Felleisen <<a href="mailto:matthias@ccs.neu.edu">matthias@ccs.neu.edu</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> May I propose a slightly more useful macro instead: #lang racket (define-syntax (myfor stx) (syntax-case stx () [(_ (i ...) for-clause todo ...) #'(for* ([i for-clause] ...) todo ...)])) <div class="im"> (define (nestfortest . args) (displayln args)) </div>(myfor (a b c) '(1 2) (displayln `(,a ,b ,c))) <div><div class="h5"> On Mar 13, 2012, at 8:02 PM, rob cook wrote: > To add to prior query - here's what I did, but I just think there *must* be a more elegant solution. > > (define (nestfor depth forclause todo) > (define (nf depth forclause todo resultant) > (for ((x forclause)) > (if (= depth 1) > (apply todo (append (list x) resultant)) > (nf (- depth 1) forclause todo (append (list x) resultant))))) > (nf depth forclause todo empty)) > > (define (nestfortest . args) (displayln args)) > > (nestfor 3 '(1 2) nestfortest) </div></div>> ____________________ > Racket Users list: > <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> </blockquote></div>