[racket] Places and non-blocking get

From: Charles Hixson (charleshixsn at earthlink.net)
Date: Sun Jun 1 16:18:05 EDT 2014

I'm contemplating implementing a program in Racket, but it involves
different processes sending messages to each other, so I need to be able
to check for the presence of a message without brining everything to a
halt.  In Python I'd do this using a Queue.  Is there something similar
in Racket?  The documentation just says that get is a blocking call, but
if there's a way to check for the presence of a message it doesn't seem
to mention it.



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