Hi Matthew,
Thanks for those thoughts.
On 01/22/2015 09:11 AM, Matthew Flatt wrote:
> On 1 above: I've been uncertain of the best way to organize logging
> from the start, but the idea of grouping topics hierarchically (such as
> a "compilation" topic group) doesn't sound promising.
I agree. Bet
[Reposted from -users, since it seems likely I erred in my initial
selection of that list]
Hi all,
Over the past few months, more and more subsystems have started logging
at info level as part of regular compilation.
I prefer having PLTSTDERR=info in order to catch log-info that happens
at runti
Hi Eli,
On 12/13/2014 08:56 PM, Eli Barzilay wrote:
> there are definitely
> conflicts involving terminals that are relevant, like xrvt and
> gnome-terminal.
In my experiments (covering linux console, OS X terminal,
gnome-terminal, xterm, rxvt, aterm, screen and tmux), I haven't been
able to prov
On 2014-06-15 3:40 AM, Matthew Flatt wrote:
>[(queue-empty? ports)
> (cond
> [(zero? (random 100))
> (suspend)
> (retry)]
> [else 0])]
>
> and that's obviously a hack, but it should illustrate that regexp
> matching can be happy to work with th
Hi all,
At the moment, when regexp.c runs out of buffered lookahead during a
regexp-try-match, it peeks a few bytes. However, it looks like it will
never peek *fewer* than 16 bytes (unless eof occurs before then).
I have written the package "incremental-input" which lets a blocking
read (e.g. rea
Hi all,
I have a little shell script I use frequently:
#!/bin/sh
raco make "$1" && exec racket "$@"
It first compiles the program I wish to run, then runs it with the
arguments I've given.
Should this be something that raco or racket does itself?
Cheers,
Tony
_
Seen just now while "make CPUS=7" on racket git rev
1f1d1a38aae9f4994f76f69948f1feaca73ba57f:
raco setup: 2 rendering:
/syntax-color-doc/syntax-color/syntax-color.scrbl
JIT buffer overflow: 0x7f804194064c [0x7f804193f020,0x7f8041940648] (1)!!
Makefile:52: recipe for target 'plain-in-place' failed
On 03/11/2014 01:50 PM, John Clements wrote:
> I just had a problem compiling Racket which was successfully resolved
> by axing the racket/build subdirectory. Would in make sense to have a
> “clean” target for the top-level makefile that does this
> automatically?
As an aside, without wishing to c
Hi all,
Is there some reason the compiler can't either (a) ignore or (b) replace
the outdated .zos when it comes across a situation like the following?
compiled/html-utils_rkt.zo::0: read (compiled): wrong version for
compiled code
compiled version: 5.90.0.5
expected version: 5.90.0.9
context...:
On 08/13/2013 05:05 PM, Nick Shelley wrote:
I was mainly asking about the intermediate form because it seems like it
could be useful, but I didn't understand how it would work.
One major difference I've just spotted is that git submodules are tied
to particular commit IDs, leading to detached-
On 08/13/2013 04:49 PM, Tony Garnock-Jones wrote:
Perhaps you're right. Maybe my impression that git submodules are frozen
is out-of-date. It has been a while since I used them. Perhaps they're
first-class checkouts that can be manipulated independently of their...
supermodule. If t
On 08/13/2013 04:42 PM, Nick Shelley wrote:
Can you elaborate on your intermediate form? I don't understand how git
submodules prohibit or restrict submodule evolution. The only difference
I see with the submodule approach is that it requires an extra commit to
update the submodule versions (and
Hi all,
Matthias asked me to write a few words about an experience I had
splitting a large repository of code up into smaller repositories and
then building a mechanism to tie them together again.
== A short story ==
Once upon a time, RabbitMQ (www.rabbitmq.com) was held in a single,
monoli
On 07/31/2013 02:42 PM, Matthew Flatt wrote:
Package names show up in all sorts of other contexts, too, such as
filesystem paths.
Sure, but if there's something that won't work as a filesystem path, the
developer finds that out awfully quickly.
Note that the programming language in which we
On 07/31/2013 02:24 PM, Matthew Flatt wrote:
I think it often
makes sense for command-line tools to have weird rules[*],
I agree with you. UIs have to be humane and ergonomic for our weak,
squishy meat-bodies to cope. (Though of course the underlying model has
to be sensible too ;-) )
espe
On 07/31/2013 02:11 PM, Jay McCarthy wrote:
The restriction is primarily because they appear in URLs as single
path segments.
Could we then widen the restriction to be [-A-Za-z0-9._~!$&'()*+,;=],
following http://tools.ietf.org/html/rfc3986#section-3.3 (but
disallowing percent-escaping)?
I
Hi all,
Package names are restricted as follows, per the documentation:
"a package name — a string made of the characters a through z, A through
Z, 0 through 9, _, and -."
Why does this restriction exist? Programmers never see package names
when using (require); Operators see package names o
Hi all,
When I have a directory foo/, containing a single-collect package, and I
install it with "raco pkg install foo/", it seems to copy the contents
of the directory, meaning local edits are not found by the system.
Instead I have to "raco pkg install --link foo/".
I would prefer it if "-
Here's the one I've been using in racl (https://github.com/tonyg/racl,
raco pkg install racl). It ignores non-hex characters but is less
efficient than Stephen's version. Um, and it expects *bytes* as input,
not strings. I'm not sure why, actually.
(define (hex-string->bytes . strs)
(define cle
On 04/16/2013 03:50 PM, Matthew Flatt wrote:
Meanwhile, I've been meaning to make `raco pkg remove' setup only the
same collections that were setup for `raco pkg install' (minus any that
are gone after the uninstall), and I've pushed that change. I don't
expect that the change fixes the underlyin
On 04/16/2013 12:42 PM, Neil Van Dyke wrote:
On these out-of-memory conditions, you might want to look at the kernel
logs for what the OOM-killer said about what processes were running,
their sizes, and who it thought the culprit was.
It was *definitely* Racket: I was watching htop at the time.
On 2013-04-16 11:50 AM, Jon Rafkind wrote:
> The PPA build has been failing the past 2 days or so for amd64 machines
> due to the Racket VM running out of memory, usually during 'raco setup'
> but not correlated with any specific collection.
I have seen this behaviour after a 'raco pkg remove': du
On 2013-02-01 3:29 PM, Asumu Takikawa wrote:
> (new c% 1 2 3) => (instantiate c% (1 2 3))
> (new c% [x 1] [y 2]) => (instantiate c% [x 1] [y 2])
> (new c% [z 3] 1 2) => (instantiate c% (1 2) [z 3])
> (new c% 1 [z 3] 2) => (instantiate c% (1 2) [z 3])
How about
(inst c% 1 2 3)
(i
Hi all,
I have a speculative change to match that I'd like to propose, but
before I do I'd like to make sure it has no negative performance impact.
How do people go about checking for performance regressions in core
racket collections? Is there a standard benchmark suite?
Regards,
Tony
__
Sorry, I should have filed a bug report instead of mailing the list. I'm
filing the report now.
On 2012-06-20 8:22 PM, Tony Garnock-Jones wrote:
> Hi all,
>
> I think I've found a bug in Racket's I/O. Please interpret the following
> text as relating to the attached t
Hi all,
I think I've found a bug in Racket's I/O. Please interpret the following
text as relating to the attached tarball with a small example of the
problem. The problem manifests for me on both platforms I've tried, OS X
and Linux.
When `sync`ing on `read-bytes-evt` at the same time as on `alar
On 05/09/2012 05:09 PM, John Clements wrote:
In particular, I would expect the JIT to be totally broken, and that
there would be a lot of painful parts related to linking to standard
libraries, but the resulting program could actually do client-side
compilation in a web browser, right?
Yep. My
On 04/18/2012 03:28 PM, Eli Barzilay wrote:
`string-normalize-spaces', which takes a string and a regexp for the
spaces, and turns all spaces into single ones. Same principles as
above. This one is getting a `#:trim?' keyword that says whether
spaces at the edges should be dropped (the
On 03/06/2012 02:14 PM, Danny Yoo wrote:
The Java folks have a notion of ".jar" files that pack a collection of
class files into a single archive, but also make it possible to load
classes directly out of .jars without an intermediate unpacking stage.
.plt archives can serve a role to pack file
On 2011-12-20 4:07 AM, Robby Findler wrote:
> I like the idea, but I think our twitter feed and blog aren't updated enough.
When we decided to put a twitter feed on the rabbitmq.com homepage, we
went with simply including *any tweet mentioning rabbitmq*. This has its
upside and its downside, of co
On 2011-10-22 9:53 PM, Eli Barzilay wrote:
> I'm not following "may not have been started via `delay/thread'" -- in
> your example you also need to define a new `standard-thread' to start
> them, so you need something other than `thread' anyway.
You're right. Using standard-thread would let me sim
On 2011-10-22 5:10 PM, Eli Barzilay wrote:
> I don't see how why that cannot be built on top of `delay/thread'.
Because
1. the threads may not have been started via delay/thread, and
2. there is no way to get from (current-thread) to the promise.
My best bet so far seems to be something along the
On 2011-10-22 1:27 PM, Eli Barzilay wrote:
> Sound like `delay/thread' might be doing everything you need.
That's a neat thing, but it's not quite what I'm after. I have a
collection of threads that are started independently and later start
communicating via some shared medium. The shared medium n
On 2011-10-22 12:02 PM, Jay McCarthy wrote:
> Eh, I think imposing this on all the threads would be a bad idea
> because it would increase memory usage unexpectedly for a lot of
> programs, I would guess
Only those holding references to their threads well beyond the lifetime
of said threads. Is th
On 2011-10-22 11:42 AM, Matthew Flatt wrote:
> I think you could get this behavior by creating a manager thread when
> you create the new kind of box. If threads are too heavyweight, though,
> you can get the effect of a primitive by using `ffi/unsafe/atomic'.
Of course! Using a thread to manage t
On 2011-10-22 11:14 AM, Jay McCarthy wrote:
> I don't think any change is necessary, because this can be done as a library:
> https://github.com/jeapostrophe/exp/blob/master/ethread.rkt
I was hoping for something that works for threads created using (thread)
as well. Using either your approach or
Hi all,
What do people think of the idea of threads preserving their exit status?
The exit status would be either
- a raised exception, or
- a normally-returned value, or
- nothing as yet, because the thread is still running.
(thread-died-with-exception? thd) -> boolean?
Returns #t if th
On 2011-10-22 9:43 AM, Tony Garnock-Jones wrote:
> Nothing like the 20 seconds or so after a post to make one question
> oneself. Could it be that semaphore-peek-evt could be used to get what I
> need? I'll experiment.
The answer is "almost", i.e. "no". But sche
On 2011-10-22 9:41 AM, Tony Garnock-Jones wrote:
> (Context: I want to build a kind of box that starts empty, is able to be
> given a value exactly once, and that threads can wait on until its value
> is set by some other thread. Currently I'm using a channel and a
> newly-sp
Hi all,
It looks like scheme_sema_post_all has the effect of an infinite number
of scheme_sema_post calls. Is that right? If so, that's exactly what I
need: would it make sense to expose the functionality, perhaps as
(semaphore-post-infinite) or (semaphore-post-all)?
(Context: I want to build a k
Hi all,
Why does the implementation of async-channels use a manager thread
internally? Is it for kill-safety? Some other reason?
Regards,
Tony
_
For list-related administrative tasks:
http://lists.racket-lang.org/listinfo/dev
> Is that expected? It looks like the OS is preventing
> not-full-fledged-app-things from opening windows and handling input.
> This is OS 10.6,8.
It probably needs to run from inside the .app folder. OS X uses the full
path to the binary to figure out the name to use to dispatch events, or
someth
On 2011-08-06 8:25 PM, Eli Barzilay wrote:
> *However*, there's an awful lot of functions to try -- going over them
> will make a very slow search...
There's not *that* many. How long does 100,000 function calls take?
I'd imagine you'd search the exports from racket/base before looking
further af
On 2011-08-06 4:41 PM, Robby Findler wrote:
> But I think in Racket we have better ways of avoiding such danger
> (namely using the sandbox library or the pieces it builds upon). In
> general, in fact, you'd have to do that anyways, since a contract can
> be some arbitrary predicate (and don't forg
kles with search-by-example
with higher-order functions.)
Regards,
Tony
On 2011-08-06 3:13 PM, Tony Garnock-Jones wrote:
> Not with search by type, but at the risk of derailing the thread, I have
> had quite a few positive experiences with search by example.
___
On 2011-08-05 12:13 AM, Robby Findler wrote:
> So I wonder if anyone has a positive experience with this kind of
> searching in an "in anger" kind of setting?
Not with search by type, but at the risk of derailing the thread, I have
had quite a few positive experiences with search by example.
For
On 2011-07-27 4:17 PM, Sam Tobin-Hochstadt wrote:
> No such alchemy exists, it's just intended as part of the conceptual
> framework.
Would it be fair to say that were such a thing to come into existence,
the VM would need to be changed as part of that work?
> No, `struct->vector' uses the chape
On 2011-07-27 4:01 PM, Sam Tobin-Hochstadt wrote:
> If you have a sufficiently powerful inspector, you can traverse any
> structure. In principle, you can even traverse closures this way, but
> no inspector with the needed power exists. See `struct->vector'.
That sounds fantastic! Especially the
On 2011-07-26 1:20 PM, Jay McCarthy wrote:
> I don't have a lot of expertise on the ORM side, but I think Snooze
> would probably be awesome and my MongoDB-backed structs may be helpful
> too.
Is there a way of generically traversing all structure in a completely
privileged way in Racket, without
Hi all,
You may be interested to learn that Racket,
http://spoofed.org/files/racket/doc/, is a Ruby Raw Packet Library for
working with various network layers, that has been incorporated into
Metasploit http://www.metasploit.com/, a penetration testing toolkit.
I know I was!
Cheers,
Tony
_
On 2011-05-17 7:38 PM, Eli Barzilay wrote:
This is relevant here, since your extension leads to another layer
of headaches.
Does this make it into more of a #lang mixin, as was recently discussed
in the context of "#lang testable racket" in Another Place?
Tony
___
On 2011-05-04 6:54 PM, Asumu Takikawa wrote:
Wow, impressive! I've been benchmarking with the DrRacket interactive
tests already for contracts, so I can run my test driver and get some
numbers for that.
That'd be great. I mean, it'll probably just break, but if it doesn't...
it'd be interestin
The attached (highly experimental) patch seems to improve the
performance of normal sends (in the case of a cache hit) by roughly 100%
- 150%. The difference between this mere factor of two improvement and
the factor of six-through-ten I was seeing earlier is, I speculate,
related to object-ref
On 2011-05-04 3:57 PM, Tony Garnock-Jones wrote:
reduce the time needed for a send in Racket from 350ns to around 60ns
That was on a fancy-pants Macbook Air 1.6GHz Core 2 Duo or whatever.
On one of the stock Pentium 4 2.8GHz 32-bit Linux machines in the lab,
running Racket v5.1.1, using the
On 2011-05-04 12:04 PM, Matthias Felleisen wrote:
I still believe that the Java implementation (just under 1s without
their 'Google' contract) benefits from typed dispatches.
Maybe it does, but it's almost certain that it is benefiting from inline
caching at send sites (i.e. dynamic type infor
Eli Barzilay wrote:
* If it's OSX, and no `git' was found in the path, then try
"/opt/local/bin/git". This looks like the common place to get it
installed on OSX (please correct me if it's wrong).
Homebrew (and a simple ./configure&&make install) will put it in
/usr/local/bin. It might be
Neil Van Dyke wrote:
For testing, I think you need not just the target processor but also
various OS and chipset/firmware stuff.
Indeed. It's a thorny issue. The Openmoko phone, for instance, had a
custom configuration of qemu that simulated the GSM radio, the GPS, the
sound chip etc etc.
Q
Noel Welsh wrote:
Also, if someone had an accessible ARM device any crazy people who
were developing, e.g., assemblers, on Racket would be able to target
that platform (and hence iPhone, iPad, and Android devices).
You know qemu's ARM emulation is fairly complete, right?
Tony
58 matches
Mail list logo
