[plt-scheme] Using threads in Teaching Languages through teachpack

From: Robby Findler (robby at cs.uchicago.edu)
Date: Mon Jun 5 15:16:50 EDT 2006

I think that this is a bug in DrScheme. I'll try to take a look in the
next day or so.


At Mon, 05 Jun 2006 12:02:46 -0700, Wayne Iba wrote:
> I posted this general issue last week but I've narrowed it down just a 
> bit.  I still need your help.  The goal is to give students a teachpack 
> that lets them create threads.  This simple teachpack works fine in 
> "Textual" but fails in "Advanced Student" (v300 and v301).  Here is the 
> teachpack:
> (module exposethread mzscheme
>   (provide thread)
>   )
> and here is the error from evaluating (thread (lambda () (display "show 
> this independently")))
> hash-table-get: expects type <hash-table> as 1st argument, given: false; 
> other arguments were: 'test-coverage-point22886
> Maybe I'm missing something simple?  As I mentioned before, this works 
> fine in v207. Thanks in advance,
> --Wayne Iba
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