[plt-scheme] #<undefined>

From: David Feuer (dfeuer at techhouse.org)
Date: Sat Jun 22 22:11:54 EDT 2002

Would it be feasable to have something more useful than #<undefined>?  I'm
imagining something holding enough info to throw a useful exception if
any Scheme primitive is applied.  (at the least info about what variable
binding in what letrec caused the problem).  I'm kind of curious how you
decided to use #<undefined>, rather than an optimized true letrec.


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