Nice - this is useful to me too, thanks very much. FWIW, instead of
make-base-namespace
I had to use
make-gui-namespace
to avoid a "cannot instantiate `racket/gui/base' a second time in the
same process" error.
On Thu, Feb 9, 2012 at 10:15 PM, Robby Findler
wrote:
> On Thu, Feb 9, 2012 at 9:
Sweet. I'll try that out when I get back to the machine tomorrow. Thanks for
the speedy help!
Best,
jmj
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Robby Findler wrote:
On Thu, Feb 9, 2012 at 9:12 PM, Eli Barzilay wrote:
> The other way is what gets you what you want: you need to use
> `sa
On Thu, Feb 9, 2012 at 9:12 PM, Eli Barzilay wrote:
> The other way is what gets you what you want: you need to use
> `sandbox-namespace-specs' to make the sandbox share an instance of the
> necessary modules between your own code and the sandbox, so that
> structs in the sandbox are the same type
The structs that are used to represent images are generative and
you're getting two different versions of them, one inside the sandbox
and one outside.
You could do the equality comparison inside the sandbox (the notion of
booleans is shared between the sandbox and the outside, unlike
images). You
20 minutes ago, Jordan Johnson wrote:
> But the REPL renders (ev '(rectangle 2 2 'solid 'blue))) as a
> picture of a tiny rectangle, as I would expect.
>
> How is the above exposing the difference between image=?'s
> perception of an image, and the object implementing the image?
My guess is that
Hi all,
Definitions:
#lang racket
(require racket/sandbox lang/imageeq)
(define ev
(make-evaluator '(special beginner)
#:requires '(2htdp/image)))
Interactions:
> (image? (ev '(rectangle 2 2 'solid 'blue)))
#f
> (image=? (ev '(rectangle 2 2 'solid 'blue))
>
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