Thanks Matthew,
Jos
> -Original Message-
> From: Matthew Flatt [mailto:mfl...@cs.utah.edu]
> Sent: 19 September 2010 03:54
> To: Jos Koot
> Cc: 'PLT-Scheme Mailing List'
> Subject: Re: [racket] internal definitions in r6rs
>
> This is a bug in the R6RS binding for `define'. Your program
On Sun, Sep 19, 2010 at 07:02, wooks . wrote:
>
> I am running Racket on a Windows PC with an Ubuntu partition (10.4 or
> whatever the latest version is called).
>
> DrRacket tends to become unresponsive after it's been running for about an
> hour (I'm talking 15 minute response time). Worse it t
On Sun, Sep 19, 2010 at 11:34, Laurent wrote:
>
>
> On Sun, Sep 19, 2010 at 07:02, wooks . wrote:
>
>>
>> I am running Racket on a Windows PC with an Ubuntu partition (10.4 or
>> whatever the latest version is called).
>>
>> DrRacket tends to become unresponsive after it's been running for about
Well, I'll cheat: you say "raco make filename.rkt".
Robby
On Sun, Sep 19, 2010 at 12:55 AM, Mathew Kurian wrote:
> Hahahaha...Neil, i agree with you, it will be my one of my best of friends
> [?]
>
> But, give me some time to read through...it may take a while before i have
> a question.
>
> Tha
Yes, like Laurent suggests, I'd look at the amount of memory you're
using. Open a new shell window and run the command "top" in there and
see what is going on with the process named "gracket".
Robby
On Sun, Sep 19, 2010 at 12:02 AM, wooks . wrote:
>
> I am running Racket on a Windows PC with an
> Could you say, offhand: would that mostly be a matter of writing
> simple glue code for all the API, or is it harder than that?
Do you know PhoneGap? We use PhoneGap. So it would take whatever it
takes to extend PhoneGap to the other services (I imagine it's already
pretty extensive), and then
on command prompt?
On Sun, Sep 19, 2010 at 7:18 AM, Robby Findler
wrote:
> Well, I'll cheat: you say "raco make filename.rkt".
>
> Robby
>
> On Sun, Sep 19, 2010 at 12:55 AM, Mathew Kurian
> wrote:
>
>> Hahahaha...Neil, i agree with you, it will be my one of my best of
>> friends [?]
>>
>> But,
Yes.
On Sun, Sep 19, 2010 at 8:35 AM, Mathew Kurian wrote:
> on command prompt?
>
>
> On Sun, Sep 19, 2010 at 7:18 AM, Robby Findler <
> ro...@eecs.northwestern.edu> wrote:
>
>> Well, I'll cheat: you say "raco make filename.rkt".
>>
>> Robby
>>
>> On Sun, Sep 19, 2010 at 12:55 AM, Mathew Kurian
Hello,
I just wanted to ask if it's all right to download and install DrRacket
Windows x86
on my Windows 7 64-bit laptop despite the fact that x86 programs are
normally for 32-bit computers. Furthermore, the only Windows version of
Racket available for download is the x86 one. Would it cause
No, I don't think it will be a problem. I have it installed on my
64-bit laptop and it works fine.
--- nadeem
On Sun, Sep 19, 2010 at 11:21 AM, Ellis Lee wrote:
> Hello,
>
> I just wanted to ask if it's all right to download and install DrRacket
> Windows x86
> on my Windows 7 64-bit laptop des
Ditto. I run DrRacket daily on two different 64-bit laptops running
Windows 7, and it works great.
[You may notice that you have two folders, "C:\Program Files" and
"C:\Program Files (x86)". By tradition, the latter is for 32-bit
programs and the former for 64-bit programs, though you can put an
Hello,
I'm a complete newcomer to Racket. I've just begun working my way through HTDP,
and have run into problems with exercise 6.2.1, which uses draw.ss. When I load
the file, Racket complains when I make any reference to the "posn" struct
(which is essential to all of the drawing tools), sa
> > But I'm wondering if multiple calls to define-class->singleton would
> > then cause multiple calls to dynamic-require, which would take too
> > much time... ?
>
> You can lift expressions to the top-level and then use those to avoid
> multiple dynamic-require's. Search for lift in
> collects/r
Thanks, Matthew, for your in-depth reply!
If there is a 16-bit limit to some drawing operations,
this will affect the application only if using auto scrollbars.
When using manual scrollbars, everything related to drawing
stays within the coordinates of the visible area of the
canvas. So maybe it'
On Sep 19, Thomas Chust wrote:
> 2010/9/19 Eli Barzilay :
> > That's likely to be very difficult, since the Windows stuff is
> > very different from the usual configure script. But do you really
> > need to have a cygwin build?
> > [...]
>
> if this is so much more complicated than I thought it i
On Sat, 18 Sep 2010 23:15 +0200, "Jos Koot"
wrote:
> A dump question, may be, and off topic too perhaps, but where are you
> going
> to store 10x10=10^18=1000 tera pixels?
> Jos?
The virtual size of a canvas may be much greater than the
visible part of it. Sure it would be a bit s
1. The draw teachpack should be used with the HtDP teaching languages only.
I just did so and the following program runs just fine in Beginning Student
Language.
(start 100 100)
(draw-circle (make-posn 30 30) 10 'blue)
;; there's nothing else in the Def area
2. I recommend shunting the fir
I know I'm in the minority, but I would love early support for
contracts. I'm not sure how to fit it in the syntax you've got so far,
but something like
deffun: copy(img, num) =
with-contract: image?, number? -> image
if: numeq(num, 1)
img
else:
beside(img, copy(img, -(
I would start by not using the draw teachpack, nor the parts of HtDP that refer
to it. Most of us have been doing graphics using the image, universe, and/or
picturing-programs teachpacks instead for several years. One easy
introduction to the currently approved approach is at
http://www.pict
Thanks very much! I didn't quite grasp the interface, and thought I was
supposed to "Open" teachpacks; after trying "Language->Add Teachpack"
everything works just fine. I appreciate your help.
Subject: Re: [racket] trouble with draw.ss teachpack
From: matth...@ccs.neu.edu
Date: Sun, 19 Sep
I've added a construct equivalent to check-expect:
test: =?
is equivalent to
(check-expect )
You can see examples.rkt rewritten to use it almost everywhere.
No support yet for check-within, etc. Tell me if those are a priority.
_
For li
2010/9/19 Eli Barzilay :
> [...]
> It's still not clear to me why you want a cygwin build instead of a
> plain windows build. The only thing I can think of is being able to
> handle cygwin symlinks
> [...]
I want a Cygwin build because I want FFI access to some C libraries that
are intended for a
In replying to the below, I'm not ignoring the rest of your message.
> By, the way, why'd you decide on "numeq" instead of
> "number=?".
I don't think there's a good verbal choice here (though numeq is
especially ugly). You can already write plain ol' =, as in,
=(1, 2)
-- evaluates to -->
On 9/19/10 8:45 PM, Shriram Krishnamurthi wrote:
I've added a construct equivalent to check-expect:
test: =?
is equivalent to
(check-expect )
You can see examples.rkt rewritten to use it almost everywhere.
I like this experiment. Two quick remarks:
- I wish conditionals were light
On Sun, Sep 19, 2010 at 8:57 PM, Shriram Krishnamurthi
wrote:
> In replying to the below, I'm not ignoring the rest of your message.
>
>> By, the way, why'd you decide on "numeq" instead of
>> "number=?".
>
> I don't think there's a good verbal choice here (though numeq is
> especially ugly). Yo
On Sep 20, Thomas Chust wrote:
> 2010/9/19 Eli Barzilay :
> > [...]
> > It's still not clear to me why you want a cygwin build instead of a
> > plain windows build. The only thing I can think of is being able to
> > handle cygwin symlinks
> > [...]
>
> I want a Cygwin build because I want FFI acc
> But if I copy and paste in the same expression, I get an error:
>> (+ 1 2
> 3)
> reference to undefined identifier: R
Confirmed: I can see similar behavior in DrScheme 4.2.5 when I
copy-and-paste in Windows 7:
###
C:\Program F
> No clue why "M" is being introduced into the stream. There's
> something in the handling of newlines at the Windows console
> interactive REPL that is funky.
Note: when I'm using cygwin's bash console, I don't see the error.
I've only been able to replicate what you're seeing with the Command
Prof. Shriram, couldnt we simply add plugins (much like those of the
IBM's Eclipse IDE) that provide a visual/ ui for such extensions such as
PhoneGap?
This is a bit of a digression, but does anyone have the full list of
keywords in Racket? I know I could just go through all api and find them,
but
Mathew Kurian wrote at 09/19/2010 11:49 PM:
does anyone have the full list of keywords in Racket? I know I could
just go through all api and find them, but I would be obliged if the
someone had a list, paste it directly. It would save a lot of time.
If all else fails, the search index that
Boston Lisp Meeting:
Monday 2010-09-20
Hari Prashanth on Functional Data Structures for Typed Racket
http://fare.livejournal.com/158662.html
A Boston Lisp Meeting will take place on Monday, September 20th 201
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