[racket-dev] Huh?

6 hours ago, Jens Axel Søgaard wrote:
> In DrRacket 6.0.0.1 open
> 
>    pkgs/draw-pkgs/draw-lib/racket/draw/private/record-dc.rkt
> 
> and then click Run.
> 
> I see:
> 
>   define-values: assignment disallowed;
>    cannot re-define a constant
>     constant: get-recorded-command1.1
> 
> Why?

That's not new -- usually when you run the code you get a clean
environment with the old instantiation gone, but some core files are
shared across runs, so it's like trying to redefine things that are
already defined.  Many files in racket/* will do the same.  To debug
this kind of stuff it can be helpful to work on a copy of the file
that you want to edit, and rename it back over the original (and
recompile) when it's working.

-- 
          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
                    http://barzilay.org/                   Maze is Life!