[racket-dev] lib changes between versions

I'm maintaining the same racket code between Racket version 5.2.1 and 6.1.
One thing that changed between those version was the json to string (and
vice versa) lib functions.

Is there a straightforward way to define those functions so they'll work
with both lib versions?

Thanks,
-- 
Dan Liebgold    [dan.liebgold at gmail.com]
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