[plt-scheme] Explanation of this piece of code?

From: Grant Rettke (grettke at acm.org)
Date: Sat Apr 25 21:26:22 EDT 2009

On Sat, Apr 25, 2009 at 8:00 PM, -gary- <gary.dunne1 at gmail.com> wrote:
> Again, apologies for the very basic question here.  I'm just trying to
> get a basic understanding of hat exactly is going on in this piece of
> code.  Any help would be aprechiated.

Where did you get this code?


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