Hi,
Is it possible to have a splash screen displayed while loading a GRacket
program?
Much like DrRacket's in fact.
Because for some projects, it can take several seconds to initialize
everything.
I tried to open up a frame at the very beginning of the code, but it only
shows up
after everything i
Sorry for the delay. In this case, Eric's interpretation is the one I
had in mind!
On Mon, Aug 30, 2010 at 9:40 AM, Eric Tanter wrote:
> Hi Ionut, Jay,
>
> I don't understand the question this way -- rather, how to maintain laziness
> without introducing an extra variant of CFAE-Value, ie. reus
Hi all again,
In the documentation I find functions for creating tar files
(http://docs.racket-lang.org/file/tar.html?q=tar#%28def._%28%28lib._file/tar..rkt%29._tar%29%29),
but none for unpacking them.
Is anyone aware of some library functions for unpacking tarballs?
Thanks,
-ryan
__
On Tue, Aug 31, 2010 at 9:01 PM, Patrick Li wrote:
> Thanks for the suggestions.
> I'm interested in the suggestion about reasoning about data flow actually.
> I'm interested in a systematic way for users to program these optimizations.
> Do you know of any readings that might be helpful to me?
T
Thanks for the suggestions.
I'm interested in the suggestion about reasoning about data flow actually.
I'm interested in a systematic way for users to program these optimizations.
Do you know of any readings that might be helpful to me?
I presented the matrix problem as an example, but here's anot
One way to get things done "properly" is to submit the file through
the server, then on the server you get it in exactly the same format
that all files are saved. You could maybe even arrange this to happen
automatically, using symlinks to the file from the published name to
the one that you submi
On Tue, Aug 31, 2010 at 2:14 PM, Matthias Felleisen
wrote:
>
> Would this help:
>
> ;; String (instance Text%) -> Void
> ;; load the content of file f into text editor t,
> ;; strip meta-data in first three lines
> (define (load f t)
> (send t load-file f)
> (define txt (send t get-text))
> (de
Ah. Well, I guess the right thing to do is to just chop the first
three lines out of the file. You should probably check for some
keyword in the header file to make sure that it really is the header
generated by drracket.
If the file contains images, then the three lines of header will be
encoded
p.s. In that case, just read and strip the first three lines. See 'load'.
On Aug 31, 2010, at 3:13 PM, Ryan Golbeck wrote:
> I'm modifying the handin-server collection to include an option where
> our students can retrieve "starter" files for assignments and labs.
> Since these files will be s
Would this help:
;; String (instance Text%) -> Void
;; load the content of file f into text editor t,
;; strip meta-data in first three lines
(define (load f t)
(send t load-file f)
(define txt (send t get-text))
(define inp (open-input-string txt))
(define fst (read-line inp))
(def
I'm modifying the handin-server collection to include an option where
our students can retrieve "starter" files for assignments and labs.
Since these files will be saved on the server directly from DrRacket,
rather than through the handin infrastructure, the files include these
three lines of meta
You have to specially remove those lines yourself in that case.
But if you say a little more about why you want to read something into
a text% object, I may give a different answer (it isn't clear what you
want to do with this stuff).
Robby
On Tue, Aug 31, 2010 at 1:49 PM, Ryan Golbeck wrote:
>
What's the proper way to read a file produced by DrRacket into a text% object?
Using load-file produces problems when DrRacket has created a file
where the first three lines contain meta data information about the
language to use.
Thanks,
-ryan
_
One option is to define a 'minilanguage' for matrix manipulations, and
implement it as a new bit of syntax that you can implement with
"syntax-rules" or "syntax-case":
(matrixy (multiply (transpose A) B))
If you want something that doesn't require operations to be structured
like this syntact
On Tue, Aug 31, 2010 at 4:22 PM, Patrick Li wrote:
> But this starts to clutter up the library. Is it possible to provide this
> optimization at the library level for the users? eg. somehow recognize that
> whenever the user writes (matrix-transpose-multiply A B) I can replace it
> with the inter
Hi everyone,
I would like to be able to provide optimizations for my library based on how
it's used, but don't know how to go about doing it.
I have a function called (matrix-multiply A B)
and another function called (matrix-transpose A)
which are fundamental linear algebra operations.
A very com
Use `define-runtime-path' to locate a file relative to an enclosing
module's source.
At Tue, 31 Aug 2010 12:54:38 +0100, Stephen De Gabrielle wrote:
> Hi,
>
> I'm trying to determine the plugin folder at runtime for a plugin I'm
> writing;
>
> an example of where I'd like this:
>
> (def
Hi,
I'm trying to determine the plugin folder at runtime for a plugin I'm
writing;
an example of where I'd like this:
(define commit-button
(new switchable-button%
(label "commit")
(parent (make-object vertical-pane% (get-button-panel)))
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