On Jun 27, 2012, at 6:39 AM, m...@goblin.punk.net wrote:
> I am planning to work through _How to Design Programs_ but
> already have some (imperative) programming experience as well as
> some exposure to Racket/Scheme.
>
> I found the following piece of advice in the mailing list
> archive. An
I am planning to work through _How to Design Programs_ but
already have some (imperative) programming experience as well as
some exposure to Racket/Scheme.
I found the following piece of advice in the mailing list
archive. Any updates or other tips?
http://groups.google.com/group/plt-scheme/ms
A few minutes ago, Robby Findler wrote:
> On Tue, Jun 26, 2012 at 10:05 PM, Eli Barzilay wrote:
> > 6 hours ago, Danny Yoo wrote:
> >>
> >> [Note: I find a place in Scribble that might help improve speed by
> >> about 15%. See below.]
> >>
> >> I'll tried adding the fast path computation, with no
On Tue, Jun 26, 2012 at 10:05 PM, Eli Barzilay wrote:
> 6 hours ago, Danny Yoo wrote:
>>
>> [Note: I find a place in Scribble that might help improve speed by
>> about 15%. See below.]
>>
>> I'll tried adding the fast path computation, with no effective
>> difference. The statistical profiler is
6 hours ago, Danny Yoo wrote:
>
> [Note: I find a place in Scribble that might help improve speed by
> about 15%. See below.]
>
> I'll tried adding the fast path computation, with no effective
> difference. The statistical profiler is not working well in this
> instance.
Any idea why? Did you
[I thought I had done Reply to All, but apparently not. CCing the list...]
On Mon, Jun 25, 2012 at 10:47 PM, Robby Findler
wrote:
> Another thought: maybe more agressive shortcircuiting might help?
[Note: I find a place in Scribble that might help improve speed by
about 15%. See below.]
I'l
Go for it. If it works well, I am sure we could use it for freshmen -- Matthias
On Jun 26, 2012, at 1:34 PM, Me wrote:
> I saw a demo of light table (ide by Chris granger) and was thoroughly
> impressed. It is using clojure but it can be adapted to other languages.
> Python and JavaScript ar
I saw a demo of light table (ide by Chris granger) and was thoroughly
impressed. It is using clojure but it can be adapted to other languages. Python
and JavaScript are two others that it currently supports. I am wondering if
there is any interest in having this ide work for racket as well. It s
Two days ago, Michael Wilber wrote:
> If I understand correctly, by default, Racket doesn't provide forms
> with stack trace information when running from the CLI by
> default.
It does (and I tried my examples on both racket and drracket).
> Does it work from within DrRacket? If so, look into th
oke,
On 87 I have to made a choice so the user can choose between a Vcat and
a VCham so one animal and one gauge.
I have then to think how I can prevent that whn the user chooses a Vcham
petting does not work.
Thanks for the help.
Roelof
Op 26-6-2012 16:38, Matthias Felleisen schreef:
On Jun 26, 2012, at 10:21 AM, Roelof Wobben wrote:
> Sorry for the confusion.
>
> I meant exercise 87 and 88 on the stable version of HtpD/2e.
>
> So the questions I have should be :
>
> Is it correct that on exercise 87 of How to design Programms I have to make 2
> gauges and two animals.
>
> The solution that springs to mind is to choose which class to instantiate
> with (if (list? param-a) ,,,) but then I'd have to state the parameter lists
> twice.
Hi Kieron,
Can you choose the class using an if or cond?
For example:
(define
Sorry for the confusion.
I meant exercise 87 and 88 on the stable version of HtpD/2e.
So the questions I have should be :
Is it correct that on exercise 87 of How to design Programms I have to make 2
gauges and two animals.
And is exercise 88 part 1 not the same as exercise 56 ?
Roelof
Op
Your count seems to be completely out of sync with
-- the stable version of HtDP/2e (
http://www.ccs.neu.edu/home/matthias/HtDP2e/htdp2e-part1.html look for
'exercise 56' )
-- the draft version of HtDP/2e (
http://www.ccs.neu.edu/home/matthias/HtDP2e/Draft/htdp2e-part1.html , ditto )
Can yo
Hello,
Sorry for so many questions but i get again confused.
Is it correct that on exercise 56 of How to design Programms I have to
make 2 gauges and two animals.
And is exercise 57 part 1 not the same as exercise 56 ?
Regards,
Roelof
Racket Users list:
http://lists.r
What architecture?
Robby
On Tue, Jun 26, 2012 at 2:37 AM, Chad Albers wrote:
> I'm using Debian Linux.
> --
> Chad Albers
>
>
> On Sun, Jun 24, 2012 at 10:08 PM, Matthew Flatt wrote:
>> What platform are you using?
>>
>> If it's Win64, the problem is likely Racket's weak support for getting
>>
On Tue, Jun 26, 2012 at 7:26 AM, Adolfo Pérez Álvarez
wrote:
> Hi All,
>
> It seems that the problem is in for*/list: itself. For example, the
> following code fails to typecheck, but I don't see anything wrong with
> it:
>
> #lang typed/racket
>
> (for*/list: ([a : Number '(1 2 3)]
>
Hi All,
It seems that the problem is in for*/list: itself. For example, the
following code fails to typecheck, but I don't see anything wrong with
it:
#lang typed/racket
(for*/list: ([a : Number '(1 2 3)]
[b : Number '(4 5 6)])
(+ a b))
Any idea of why doesn't typecheck? I'm tota
It doesn't produce a stack trace of DrRacket.
Also, it doesn't produce a stack trace if I include the errortrace on
the command line.
:(
--
Chad Albers
On Mon, Jun 25, 2012 at 2:29 AM, Michael Wilber wrote:
> If I understand correctly, by default, Racket doesn't provide forms with
> stack trac
I'm using Debian Linux.
--
Chad Albers
On Sun, Jun 24, 2012 at 10:08 PM, Matthew Flatt wrote:
> What platform are you using?
>
> If it's Win64, the problem is likely Racket's weak support for getting
> a backtrace on that platform (when the JIT is enabled).
>
> At Sun, 24 Jun 2012 22:01:02 +0900
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