[plt-scheme] Debugging the lazy language

From: Noel Welsh (noelwelsh at gmail.com)
Date: Sun Dec 30 17:39:01 EST 2007

Final question of the evening...

I'm experimenting with the lazy language.  Now I've written some code
that works fine w/ eager evaluation.  I converted to lazy, mostly just
by changing module declarations to (lib "lazy.ss" "lazy"), and now the
code doesn't do anything.  I've peppered force ("!") statements around
but still no joy.  It uses the class system if that makes any

Is there any way I can debug program in the lazy language and work out
what is and isn't getting evaluated (and better yet, why)?  I
sprinkled a few printfs around and so far, no output.

Also, if there any better documentation than the terse doc.txt?


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