[plt-scheme] A tutorial on simple zippers

From: Danny Yoo (dyoo at hkn.eecs.berkeley.edu)
Date: Fri Jun 30 15:26:44 EDT 2006

Hi everyone,

I think I finally understand the zipper data structure.  I cooked up a 
tutorial trying to explain them to myself, and thought it might be helpful 
to others:


I try to stick with HTDP terminology as best as I can, but any suggestions 
to simplify would be greatly appreciated.  Thanks!

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