On Tue, 01 Nov 2016 06:47:24 +0100, Vincent St-Amour
<stamo...@eecs.northwestern.edu> wrote:

>FWIW, your `find-it` is a thin wrapper over `memf` from `racket/base`.
>
>Vincent

Sort of.  In a roundabout way, the OP also asked about how to return
multiple values from a function.  memf doesn't do that.

My point was to illustrate what needed to be done to solve the problem
- not to hand up a ready solution from the library.  

Racket's massive batteries-included implementation surely is a
blessing for practitioners, but IMO it's more a curse for newbies
trying to learn technique.  

YMMV,
George

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