I taught from HtDP/2e last semester, using 2htdp/image, and had similar
experiences with my students playing with overlay/xy. I must admit it wasn't
what I expected after using overlay, and I agree with Don. With the caveat
that I'm not concerned about backward compatibility, I would prefer to see
overlay/xy updated to be consistent with overlay, in the way Don described.
Short of this possibility, a revision to the documentation would also be
helpful... :-)
Thanks to Don for articulating this behavior so well, and to Robby for
soliciting further opinions!
Marc
On Sun, Jan 30, 2011 at 10:33 PM, <users-requ...@racket-lang.org> wrote:
Message: 4
Date: Sun, 30 Jan 2011 21:04:52 -0600
From: Robby Findler <ro...@eecs.northwestern.edu>
To: Don Blaheta <dblah...@monm.edu>
Cc: "users@racket-lang.org" <users@racket-lang.org>
Subject: Re: [racket] overlay and overlay/xy
Message-ID:
<AANLkTinGAs=xm7gqyjj+q5blmhmcjmic_8tnxhn31...@mail.gmail.com<xm7gqyjj%2bq5blmhmcjmic_8tnxhn31...@mail.gmail.com>
>
Content-Type: text/plain; charset=UTF-8
I find this to be a compelling argument but I am worried about
backwards compatibilty for others.
The least I can do is a better job documenting this (and thanks to
your message I think I'll be able to do that) but I'm not sure about
changing the semantics.
Do others that may depend on 2htdp/image have an opinion?
Robby
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