Patrick Li wrote at 10/16/2011 11:41 PM:
Racket is nice to get started with, but eventually I will need to move this onto a different system, so I cannot rely upon Racket's utilities. Even though they are very nice!
If you will be moving this onto an old Scheme implementation instead of Racket, you might also want to look at Tiny-CLOS.
I suspect you have unusual requirements, if you'll be moving to something other than Racket. Racket is good for most purposes nowadays.
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