[racket] student languages: getting started?

This sounds like something has gone wrong in the pkg setup on your
machine. What do you get when you do

  raco pkg show -a

Robby

On Wed, May 21, 2014 at 7:56 AM, Éric Tanter <etanter at dcc.uchile.cl> wrote:
> Well, I had tried that and the problem was, as I mentioned in my previous message, that "nor is there an htdp section in the `choose language...' dialog".
>
> Now I tried on another machine, and yes, there is such an htdp section. And the stepper works as expected.
>
> But I don't remember having explicitly uninstalled htdp on my machine. And also, yesterday I reinstalled (getting the latest .dmg) and the same happened.
> - how come this disappeared?
> - how can I get it back?
>
> Thanks,
>
> -- Éric
>
>
> On May 20, 2014, at 10:42 AM, Robby Findler <robby at eecs.northwestern.edu> wrote:
>
>> I think the instructions in HtDP are wrong. You could choose "Choose
>> Language" and then click on "Beginning Student Language" in the
>> resulting dialog.
>>
>> Robby
>>
>> On Tue, May 20, 2014 at 9:24 AM, Éric Tanter <etanter at dcc.uchile.cl> wrote:
>>> Hi,
>>>
>>> I'm having trouble using the base student languages from scratch (v6.0.1).
>>> (strangely enough, it's the first time ever I'm really interested in running these languages since the whole #lang story was introduced)
>>>
>>> 1. If I start DrRacket and try to follow the instructions online
>>> http://www.ccs.neu.edu/home/matthias/HtDP2e/part_prologue.html
>>> "Start DrRacket and choose “Beginning Student Language” from the “How to Design Programs” submenu in the “Language” menu."
>>> -> there is simply no such submenu in the language menu, nor is there an htdp section in the "choose language..." dialog
>>>
>>> 2. If I put #lang htdp/bsl then I can use bsl and run it, but the stepper does not work:
>>> send: no such method
>>>  method name: stepper-button-callback
>>>  class name: ...ket/version/tool.rkt:176:9
>>>  context...:
>>>   /Applications/Racket/collects/racket/private/class-internal.rkt:4387:0: obj-error34
>>>   /Applications/Racket/share/pkgs/htdp-lib/stepper/drracket-button.rkt:11:3
>>>   /Applications/Racket/collects/racket/private/more-scheme.rkt:147:2: call-with-break-parameterization
>>>   /Applications/Racket/collects/racket/private/more-scheme.rkt:264:2: call-with-exception-handler
>>>   /Applications/Racket/share/pkgs/gui-lib/mred/private/wx/cocoa/window.rkt:751:4: dispatch-on-event method in window%
>>>   /Applications/Racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:451:6
>>>   /Applications/Racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:502:32
>>>   /Applications/Racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:650:3
>>>
>>> Clearly, I must be doing something wrong, because those things should work right out of the box I assume!
>>>
>>> (I tried running raco setup, that didn't fix the issues)
>>>
>>> Thanks,
>>>
>>> -- Éric
>>>
>>>
>>>
>>> ____________________
>>>  Racket Users list:
>>>  http://lists.racket-lang.org/users
>>
>