Instead through iteration like for or do which assign values to element of
array, deliver list or vector directly to the ctype function imported by ffi.
Because I think that operating the list or vector with built-in functions is
more conveniently than the ctype array.
In the reference, I find _a
begin0 is for exactly the case you ignore, multiple values. You cannot know
the number of values the first expression will return statically so if you
did a translation to begin it would need to allocate them in a list on the
heap and then use (apply values ...) later.
With begin0 as a primitive y
Greg Hendershott wrote at 12/14/2012 11:56 AM:
The reason I want this is for the About box of an app:
"http://i.imgur.com/TofUX.png";.
What does it look like after you tap to expand "Hardware"?
Off-topic for this thread, but: http://postimage.org/image/hnmg5klex/
(Now you know the m
Tobias and Matthew,
Thank you, both your answers were informative.
David
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Matthew Flatt wrote at 12/14/2012 08:53 AM:
At Thu, 13 Dec 2012 23:52:03 -0500, Neil Van Dyke wrote:
Can a program running in Racket VM introspect on itself to determine the
names and versions of PLaneT packages that the program uses?
You should be able traverse the import hierarchy
The "begin" and "begin0" forms appear in the racket programs, in the
fully expanded programs and in the bytecode. I expected that in some
intermediate expansion step the "begin0" form expands to a "begin"
form.
For example something like: (This version doesn't work for multiple
return values.)
(d
Just to update, also tried this on v5.3.1 using
spawn-node-supervise-place-at with #:thunk set. same result.
On 12/14/2012 03:31 PM, Matthew Eric Bassett wrote:
Hey folks,
I was playing around with distributed places and I ran into a some
problems. I'm using racket v5.3 and am following the
I think this isn't exactly the problem you're looking for. You get
> "waitpid: No child pocesses" because Racket (with places enabled)
> creates its own thread to reap child processes.
>
Is it possible to make Racket not to reap child processes? Can it be done
during its initialization or is comp
> The reason I want this is for the About box of an app:
> "http://i.imgur.com/TofUX.png";.
What does it look like after you tap to expand "Hardware"?
Racket Users list:
http://lists.racket-lang.org/users
I'm also interested in this, along with deleting keys. It'd be so nice to
do this kind of stuff in Racket!
On Fri, Dec 14, 2012 at 10:32 AM, wrote:
> Date: Fri, 14 Dec 2012 09:37:39 +0100
> From: herak...@gmx.de
> To: "racket "
> Subject: [racket] Registry renaming keys
> Message-ID: <201212140
Hey folks,
I was playing around with distributed places and I ran into a some
problems. I'm using racket v5.3 and am following the docs from the
racket reference
(http://docs.racket-lang.org/reference/distributed-places.html)
Let's say we have an example just like the one in the reference.
At Thu, 13 Dec 2012 23:52:03 -0500, Neil Van Dyke wrote:
> Can a program running in Racket VM introspect on itself to determine the
> names and versions of PLaneT packages that the program uses?
>
> I tried poking around with environment introspection, and trying to
> follow module use graph tha
I hope it's ok that I'm cc'ing the list. You ask good questions and
others might be interested in the answers or in improving my answers.
At Thu, 13 Dec 2012 22:09:18 -0800, Rajah Mahsohn Omega wrote:
> You gave this example for
> specifying a language in a submodule.
>
> #lang racket/base
>
>
At Fri, 14 Dec 2012 09:15:48 +0100, Tobias Hammer wrote:
> On Fri, 14 Dec 2012 07:25:36 +0100, David T. Pierson
> wrote:
>
> > I've wondered about this. What is the rational behind these
> > differences? Wrapping events is cumbersome.
> >
> > For instance, my first intuition is that the synch
Hello friends,
are there functions in racket which makes regitry/keys renaming possible?
I know about get-resource and write-resource. But I seems that they can only
write and get. But modifying??
Yours,
Racket Users list:
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On Fri, 14 Dec 2012 07:25:36 +0100, David T. Pierson
wrote:
I've wondered about this. What is the rational behind these
differences? Wrapping events is cumbersome.
For instance, my first intuition is that the synchronization result of a
place channel would be the place channel itself, just
In a.rkt:
#lang racket
(require racket/runtime-path)
(define-runtime-path cwd ".")
(provide cwd)
On 12/14/2012 12:55 AM, Haiwei Zhou wrote:
> Hi,
>
> For example, I have two module a and other-directory/b
>
> a.rkt
> - begin of file ---
>
> #lang racket
>
> (define cwd (current-directory))
>
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