[plt-scheme] How to make unit functors?

From: Robby Findler (robby at cs.uchicago.edu)
Date: Wed May 28 17:32:15 EDT 2003

Actually, this seems bad (or maybe just confusing?) -- it means that I
have to save not only the hash-code for an object; I also have to save
the object itself to ensure the hash-code doesn't change. Maybe this is
only really confusing for symbols?


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