Other than the standard docs, Danny Yoo's “Fudging Up Racket,” and Matthew
Flatt’s "Creating Languages in Racket," are there other good sources of
tutorials & sample code for the language-building facilities in Racket?
Racket Users list:
http://lists.racket-lang.org/users
I think I get it just from reading it (in bed, on the phone, annoying the
wife). I had tried to do almost this very thing with datum->syntax at one
point, but I had put the quotesyntax on datum->syntax, not on id directly.
I don't understand why that would make a difference, it seems like it is
si
Aaah, man. Thanks. Shutdown the pc for the night so u will try tomorrow.
On May 2, 2013 10:35 PM, "Jay McCarthy" wrote:
> You were close to what you want. Here's a version with a nice utility
> and then the underlying machinery that makes it:
>
> #lang racket
> (require (for-syntax racket/syntax)
You were close to what you want. Here's a version with a nice utility
and then the underlying machinery that makes it:
#lang racket
(require (for-syntax racket/syntax))
(define-syntax (double-define stx)
(syntax-case stx (double-define)
[(_ id val1 val2)
(with-syntax ([id-1 (format-id
Hi there!
I'm pretty new to Racket, though not the basic concepts of functional
programming [1] Maybe I don't need macros here at all, but it seemed like
the right sort of lever when I first started, but now I'm pretty stuck[2]
and I don't understand enough about the macro system yet to be able to
A stack overflow in scheme_uncopy_stack() sounds like a thread that is
trying to jump to a continuation whose representation is corrupted. (An
all-zeroed Scheme_Jmpup_Buf could have that effect, but I don't
particularly trust gdb to tell us the actual content, unless you
disabled optimization when
I mean address space randomization in general, not stack.
Neil Van Dyke wrote at 05/02/2013 08:12 PM:
Perhaps only Matthew Flatt can solve this, but a few bits of info
might help:
* Is this running on Amazon EC2?
* Have you disabled any stack randomization feature of the OS?
* Are you using
Perhaps only Matthew Flatt can solve this, but a few bits of info might
help:
* Is this running on Amazon EC2?
* Have you disabled any stack randomization feature of the OS?
* Are you using any FFI or C extensions in the Racket process?
Neil V.
Racket Users list:
http:
Hi, I'm not a Racket expert, but I have a little experience with
core dumps.
If you compiled the interpreter yourself, no one else will be able to
do much with the core. But that's not the end of the world.
Do you have the source/debug info option turned on when compiling?
If not, recompile with
I think you're missing some diagnostic info that is easy to get.
Install the "htop" program, and leave it running in a terminal window.
When things seem to suddenly get slow, go to your "htop" terminal window
(if you can), and look at what the RAM and swap usage bars say, and
which processes
Because I overlooked that argument. Thanks for pointing it out!
-Ian
- Original Message -
From: "Robby Findler"
To: "J. Ian Johnson"
Cc: "users"
Sent: Thursday, May 2, 2013 5:24:16 PM GMT -05:00 US/Canada Eastern
Subject: Re: [racket] Trimmed view in redex's traces?
Why not just use th
Why not just use the pp argument that's already there? (And I think your
editor is indenting improperly; some of those lines don't seem to have
changed except indentation)
Robby
On Thu, May 2, 2013 at 3:02 PM, J. Ian Johnson wrote:
> Okay, here's a diff that hacks it in for my purposes and doe
Still having a hard time catching Racket or Ubuntu "in the act".
Fortunately, this is at least in part because I haven't had many crashes
lately.
One thing that seems to happen fairly consistently is that I end up waiting
a lot on the background syntax expansion. Sometimes Racket recovers.
Sometime
Okay, here's a diff that hacks it in for my purposes and doesn't crash. I don't
know what this breaks due to the new init-field in size-snip though. Will
anyone familiar with this part of the codebase please comment?
Thanks,
-Ian
diff --git a/collects/redex/gui.rkt b/collects/redex/gui.rkt
index
I'm trying to debug an abstract machine with some large auxiliary tables. Is
there a way to make traces only show a portion of a term, but still treat the
box it's in as the entire term? An additional bonus would be to drill down into
a trimmed box via click or something.
I don't see this in the
Hi all,
It might be better to send this to dev@racket-lang. Then again, it
might be completely useless to them.
So we have a job scheduler program written in racket that handles
various places and tcp clients. This program sporadically and
inconsistently terminates with the following error
Interesting!
On Thu, May 2, 2013 at 4:20 PM, Jay McCarthy wrote:
> On Thu, May 2, 2013 at 8:18 AM, Laurent wrote:
> > Does this mean that if I include a test suite in my package and register
> it
> > on PLaneT, the tests will be automatically run from your servers?
>
> If you put a test suite
Given there was a time when things were pretty solid (within the last
year??) a git bisect approach is an option for someone blessed with spare
time and system.
On Thu, May 2, 2013 at 10:03 AM, Tim Brown wrote:
> Back on the subject of right menu fragility...
> I ran a drracket up in an Xnest
On Thu, May 2, 2013 at 8:18 AM, Laurent wrote:
> Does this mean that if I include a test suite in my package and register it
> on PLaneT, the tests will be automatically run from your servers?
If you put a test suite in your package and register it on our
catalog, and your package is ring 0, then
On Tue, Apr 30, 2013 at 12:24 PM, Matthew Flatt wrote:
> 2. It could mean that the package system has a built-in way to declare
> dependencies not only on a particular package, but on a particular
> revision of a package --- either to ensure that certain features
> are available or th
Does this mean that if I include a test suite in my package and register it
on PLaneT, the tests will be automatically run from your servers?
And if some test fails, the package will not be updated for those who run
`raco pkg update` ?
On Thu, May 2, 2013 at 4:11 PM, Robby Findler
wrote:
> One t
Yes, this curation system is already partially in place. When you go
to the main catalog, you'll see that each package has a 'ring' number
where 0 = trusted, 1 = non conflicting, 2 = unknown. I have not yet
set up continuous integration of ring 0, but I will soon. Also, I
haven't got the documentat
One thing perhaps worth mentioning, tho, is that there will be a curated
package source where we will make significant efforts to avoid "accidental"
bugs like this, by automatically running test suites, etc. Something much
like the process that we use for Racket's git (except that in the case of
Ra
Back on the subject of right menu fragility...
I ran a drracket up in an Xnest server. No window manager nor desktop
environment.
Fragility still there. The more exciting stuff I did (selection, allowing
arrows to appear with their respective "n bindings" popups) the more
fragile. But still diffic
On Thu, May 2, 2013 at 7:29 AM, Matthew Flatt wrote:
> [Jay will have to correct me if I have any part of this wrong...]
Nope, it was beautiful.
> At Thu, 2 May 2013 11:31:09 +0200, Laurent wrote:
> As an aside, the `raco pkg update' action is not restricted to packages
> installed by package na
That sounds all good to me! Thanks!
On Thu, May 2, 2013 at 3:29 PM, Matthew Flatt wrote:
> [Jay will have to correct me if I have any part of this wrong...]
>
> At Thu, 2 May 2013 11:31:09 +0200, Laurent wrote:
> > Say I want to use a package, registered on the PLaneT catalog as X.
> > First I
[Jay will have to correct me if I have any part of this wrong...]
At Thu, 2 May 2013 11:31:09 +0200, Laurent wrote:
> Say I want to use a package, registered on the PLaneT catalog as X.
> First I do `raco pkg install X`.
Yes.
> In my Racket files, I simply use `(require X)'.
Assuming that packa
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