Yes, it is. Unfortunately I did not make this clear to at least 1 textbook author whose text now depends directly on 2htdp/image. I hope to make this clear in the future to avoid these kinds of problems.
Robby On Monday, January 31, 2011, Shriram Krishnamurthi <s...@cs.brown.edu> wrote: > I thought our working principle was that textbook authors should > create their own Teachpacks/language levels, not rely on those for > HtDP being stable for their purposes. > > This would certainly be a good time to make that point clear. > > Shriram > > On Mon, Jan 31, 2011 at 6:58 AM, Robby Findler > <ro...@eecs.northwestern.edu> wrote: >> In addition to these onlist replies, I have now heard one off-list >> reply that is fairly strongly against changing it, pointing out that >> people write books that depend on these details. >> >> Possibly adding a new function is the most viable route? >> >> Robby >> >> On Sun, Jan 30, 2011 at 10:00 PM, Marc L. Smith <mlsm...@cs.vassar.edu> >> wrote: >>> 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> >>> 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 >>> >>> >>> >>> >> >> _________________________________________________ >> For list-related administrative tasks: >> http://lists.racket-lang.org/listinfo/users > _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
