Hi all,
While working through the first bits of the HtDP2e book, in DrRacket 6.9 on
Mac, I get the following error whenever I try to run any program in the
"Definitions" window that contains (require 2htdp/universe):
link: bad variable linkage;
reference to a variable that is not a procedure
Onno,
That happens when the .zo files produced by plain command-line racket conflict
with ones that come from DrRacket. Or the other way around, I am not sure. Or
something else related to .zo files that are no longer valid for some reason.
Anyway, try removing the 'compiled' directories from
How did you install Racket? Via the Mac installer from ‘download’?
[This error happens when you had an older installation and the new one doesn’t
re-compile the byte code files.]
> On May 13, 2017, at 5:19 PM, onn...@gmail.com wrote:
>
> Hi all,
>
> While working through the first bits of
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