[racket] custom port question

From: Kartik Agaram (ak at akkartik.com)
Date: Thu Sep 6 19:43:09 EDT 2012

I'm trying to build an output port that acts like 'tee', wrapping two
(or more) output ports and duplicating writes to them. This requires
right? I'm trying to think about what the evt arg to make-output-port
should be. It needs to be the AND of the sync-readiness of all the
constituent ports, right? Is there a way to specify that? choice-evt
is an OR, if I'm reading the docs right..


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