[racket] Problem Stream with alternating values

From: Jos Koot (jos.koot at gmail.com)
Date: Tue May 21 13:48:27 EDT 2013

Sorry for the late reply, I was out of home without communication for a
couple days. Indeed, my first impression was that the problem states that
streams are to be constructed with thunks. But as a student it is a very
good thing to try, without forgetting the original form of the exercise,
more than one approach and then compare them (my personal opion though).

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