>
> ;This I understand:
> ;To return pattern and everything to left of first instance of pattern,
> use: [^]* ;where ^ means 'not'; example:
> (car (regexp-match* #rx"[^/]*/" "12/4/6")) ; => "12/"
>
A caveat for this. in the first instance isn't quite right. [...]
defines a single character. [abc
Regexp-match question: ? means what, or .*? means what...
;This I understand:
;To return pattern and everything to left of first instance of pattern,
use: [^]* ;where ^ means 'not'; example:
(car (regexp-match* #rx"[^/]*/" "12/4/6")) ; => "12/"
;This I do not understand:
;To return pattern and ev
The original code used port 587. This is for SSL/TLS
encrypted communication. Try the same port as Matthias:
465.
j
On 5/8/2013 8:05 PM, Matthias Felleisen wrote:
I have used the script below to send email to my students via gmail:
#! /bin/sh
#|
exec racket -t "$0" ${1+"$@"}
|#
#lang racke
I have used the script below to send email to my students via gmail:
#! /bin/sh
#|
exec racket -t "$0" ${1+"$@"}
|#
#lang racket
;; -
;; send graded solutions located in _directory_ and label them _subject_
(define d
hello all,
i am trying to use ``smtp-send-message" to send emails via gmail. my
code is following:
``
#! /usr/local/bin/racket
#lang racket
(require net/head net/smtp)
(smtp-send-message
"smtp.gmail.com"
"w1 "
'("w2 ")
(standard-message-header
"w1 "
'("w2 ")
'() ; CC
'() ; BCC
"Su
On 5/8/2013 11:46 AM, Eli Barzilay wrote:
Racket version 5.3.4 is now available from
http://racket-lang.org/
One thing I have noticed with this and other versions of
Racket: the downloader website chooses Windows 32 bit for
me, even though my platform is Windows 64 bit. Small
minor detail
Thanks Eli.
The installation "feels" faster, but I have seen a couple of random "not
responding"s so far on a W7/32bit OS. Tonight I will try out W7/64bit and
OSX.
-joe
On Wed, May 8, 2013 at 9:46 AM, Eli Barzilay wrote:
> Racket version 5.3.4 is now available from
>
> http://racket-lang.o
I have speeded up the procedure a little bit by avoiding to recompute the
inverse of the logarithm of the base each time the procedure is called.
Please let me know whether or not you want the new version. In that case
I'll send you the new version.
Jos
> -Original Message-
> From: Jos Ko
On 05/08/13 21:39, Neil Van Dyke wrote:
I had a similar problem this morning when installing from the
pre-release source, but figured it was probably my fault and didn't have
time to investigate. (Sorry, I didn't know the release was going to be
today, or I would've emailed.)
Neil V.
I've t
40 minutes ago, Tim Brown wrote:
> I've just installed 5.3.4 for windows 64 bit. I've ended up with a
> GRacket icon in my start menu, whereas I'd rather expect a DrRacket.
I think that Windows 7 uses some obscure guess about programs that it
shows you in the menu's toplevel, but I have no idea ho
Attached an order-of-magnitude with optional base argument.
May be you want to replace the current version that I wrote about one or two
years ago.
IIRC Matthew Flatt included it in the math.
File order-of-magnitude.rkt includes a commented out test.
Jos
> -Original Message-
> From: R
Folks,
I've just installed 5.3.4 for windows 64 bit. I've ended up with a GRacket
icon in my start menu,
whereas I'd rather expect a DrRacket.
DrRacket is installed and running lovely from the "Programs" menu.
But it's at least one (if not two) more clicks away!
Tim
--
| Tim Brown | M:+44(0)7
I had a similar problem this morning when installing from the
pre-release source, but figured it was probably my fault and didn't have
time to investigate. (Sorry, I didn't know the release was going to be
today, or I would've emailed.)
Neil V.
Racket Users list:
http:
Hello!
First thanks for this great programming environment. I just downloaded and
compiled racket-5.3.4. The programm drracket started as usual and worked fine.
But as I tried to open the documentation via the help-button my browser
announced file file:///home/axel/racket-5.3.4/share/doc/racket
On May 8, 2013, at 11:54 AM, Eli Barzilay wrote:
> An hour ago, John Clements wrote:
>>
>> The traditional way to do this would be to match a sequence of
>> non-x's followed by an x, like this:
>>
>> #lang racket
>>
>> (regexp-match #rx"[^x]*x" "12x4x6") ; => '("12x")
>>
>> Things get a bit m
Sorry I missed last year's RacketCon. It was held on the same weekend we
had all the kids (and now grandkids) here in Denver for a long weekend. It
also coincided with the American Beer Festival held in Denver, which is
probably why the kids - especially our son and son-in-laws - wanted the
reunion
An hour ago, John Clements wrote:
>
> The traditional way to do this would be to match a sequence of
> non-x's followed by an x, like this:
>
> #lang racket
>
> (regexp-match #rx"[^x]*x" "12x4x6") ; => '("12x")
>
> Things get a bit more interesting if you put a more complex pattern
> in place o
On Wed, 8 May 2013 13:55:28 -0400
Eli Barzilay wrote:
> Three hours ago, Ray Racine wrote:
> > On a tangent, if you run your Racket on Linux (like anyone would use
> > anything else :0 ) you can "install" *.rkt files as executables with
> > binfmt.
> > [...]
> > Better odds Eli has something done
Is there a language mode for Racket, or perhaps a 3rd party library, that
can do basic syntax checking for ANSI SQL? I hate writing a query, starting
the app, getting through the UI to the point I'm working on, executing a
command, and only THEN learning I have a syntax error from accidentally
typi
Don, hello.
On 2013 May 8, at 18:25, Don Green wrote:
> (regexp-match #rx"___" "12x4x6") ; => '("12x") ;returns everything to left
> of first pattern x
Orthogonally to John's answer (which is all about matching the thing you want),
you can aim to match the pattern you want to terminate the th
RacketCon is listed as co-event for "Lisp in Summer."
Begin forwarded message:
> From: Asumu Takikawa
> Subject: [Racket announcement] [ANN] RacketCon 2013: 29 September
> Date: May 8, 2013 12:10:28 PM EDT
> To: Racket Announce
>
> RacketCon 2013
> --
>
> We are please
Three hours ago, Ray Racine wrote:
> On a tangent, if you run your Racket on Linux (like anyone would use
> anything else :0 ) you can "install" *.rkt files as executables with
> binfmt.
> [...]
> Better odds Eli has something done along these lines polished to
> perfection. : )
I played with it i
On May 8, 2013, at 10:25 AM, Don Green wrote:
> Regexp question: Is there a pattern that can match everything to left of
> first pattern?
>
> (regexp-match #rx"x.*" "12x4x6") ; => '("x4x6") ;returns everything to right
> of first pattern x
>
> (regexp-match #rx"___" "12x4x6") ; => '("12x") ;r
Nothing wrong at all.
binfmt is both a more complex and a more powerful approach. It could be
set up files where one cannot place a hashbang such as zo files or and
often is for jar files. While I haven't tried this, imagine you have
several cloud servers and wish to "promote" Racket applicatio
Regexp question: Is there a pattern that can match everything to left of
first pattern?
(regexp-match #rx"x.*" "12x4x6") ; => '("x4x6") ;returns everything to
right of first pattern x
(regexp-match #rx"___" "12x4x6") ; => '("12x") ;returns everything to left
of first pattern x
Thanks.
Don Gr
Thanks for the report! I've taken your suggestion for ~r's
order-of-magnitude estimate. (I didn't change the version in
racket/math, though, but it seems like a reasonable idea to me.)
Ryan
On 05/08/2013 03:21 AM, Jos Koot wrote:
I came across another thing:
#lang racket
(define x #e100.e-5
On 05/07/2013 01:12 PM, Dmitry Pavlov wrote:
Hello,
I just came across the following oddness with formatting
of real numbers:
> (~r 1.0 #:notation 'exponential #:precision '(= 4))
"1.e+00"
OK
> (~r 0.0 #:notation 'exponential #:precision '(= 4))
"0.e+04"
???
Is there a rational expla
On 05/08/13 16:27, Ray Racine wrote:
On a tangent, if you run your Racket on Linux (like anyone would use
anything else :0 ) you can "install" *.rkt files as executables with
binfmt.
Very Short (no validation) Path
1) Create a shell script runracket.rkt in your racket installation bin.
i.e. /us
On Wed, 8 May 2013 10:27:09 -0400
Ray Racine wrote:
> On a tangent, if you run your Racket on Linux (like anyone would use
> anything else :0 ) you can "install" *.rkt files as executables with
> binfmt.
>
> Very Short (no validation) Path
>
> 1) Create a shell script runracket.rkt in your rack
Racket version 5.3.4 is now available from
http://racket-lang.org/
* Extflonums (80-bit floating-point numbers) are supported on some
x86/x86_64 platforms -- including Windows, and including platforms
where Racket is compiled to use SSE instructions for flonum
arithmetic. Thanks to Micha
Everyone, please take a look at the Lisp in Summer project page:
http://lispinsummerprojects.org/welcome
The FAQ explicitly lists Racket, and it would be wonderful to see some Racket
projects carried out under the Lisp in Summer umbrella.
-- Matthias
Racket Users
They're using a shared image of the Racket run-time system, but they
have separate copies of the Racket-implemented libraries that are in
bytecode form and embedded in each executable.
The reason that `raco exe' produced slower results than `raco make' is
that the generated executable did not supp
I think you're looking for ".*":
> (regexp-match "a.*e" "zaijklez")
("aijkle")
See:
docs.racket-lang.org/guide/regexp.html
Laurent
On Wed, May 8, 2013 at 6:06 PM, Don Green wrote:
> Is there a symbol in regexp-match syntax, similar to the period but... a
> representation for all the charact
Don, hello.
On 2013 May 8, at 17:06, Don Green wrote:
> The ___ below represents the pattern and all the remaining characters in
> the string to the right of the pattern 'x':
>
> (regexp-match #rx"x___" "12x4x6") ; => '("x4x6")
>
>
> I realize I could place a period for each character I want
Is there a symbol in regexp-match syntax, similar to the period but... a
representation for all the characters to one side of the pattern?
For example, the period below represents the pattern and a single character
to the right of the pattern 'x':
(regexp-match #rx"x." "12x4x6") ; => '("x4")
Th
RacketCon 2013
--
We are pleased to announce that (third RacketCon) will take place on
September 29, 2013 at Northeastern University in Boston. This year, we
plan to bring in several speakers from industry, as well as host talks
from Racket developers and users.
Lunch will be provide
After a raco make r.rkt tr.rkt
ray@rpr:~$ time racket r.rkt
real0m0.036s
user0m0.020s
sys0m0.016s
ray@rpr:~$ time racket tr.rkt
real0m0.382s
user0m0.352s
sys0m0.028s
ray@rpr:~$
On Wed, May 8, 2013 at 11:26 AM, Sam Tobin-Hochstadt wrote:
> I have a fast SSD, so that mi
I have a fast SSD, so that might be the difference.
Sam
On Wed, May 8, 2013 at 11:05 AM, Ray Racine wrote:
> Oddly
>
> ray@rpr:~$ time racket r.rkt
>
> real0m0.052s
> user0m0.040s
> sys0m0.012s
>
> ray@rpr:~$ time racket tr.rkt
>
> real0m0.958s
> user0m0.876s
> sys0m0.080
Oddly
ray@rpr:~$ time racket r.rkt
real0m0.052s
user0m0.040s
sys0m0.012s
ray@rpr:~$ time racket tr.rkt
real0m0.958s
user0m0.876s
sys0m0.080s
On Wed, May 8, 2013 at 10:35 AM, Sam Tobin-Hochstadt wrote:
> On Wed, May 8, 2013 at 6:19 AM, Carl Eastlund wrote:
> >
> > I
On Wed, May 8, 2013 at 6:19 AM, Carl Eastlund wrote:
>
> I see just under 5 seconds for test.rkt and just over 5 seconds for
> utest.rkt. So there's a fraction of a second extra startup time for Typed
> Racket, but it takes less time for each subsequent computation, so the
> difference depends on
On a tangent, if you run your Racket on Linux (like anyone would use
anything else :0 ) you can "install" *.rkt files as executables with
binfmt.
Very Short (no validation) Path
1) Create a shell script runracket.rkt in your racket installation bin.
i.e. /usr/local/racket/bin/runracket
#! /bin/sh
Perhaps the EXEs take longer because they are not using a shared image of
Racket, thus the OS must load code that is 99% equivalent from two
different disk locations.
On Wed, May 8, 2013 at 7:55 AM, Manfred Lotz wrote:
> On Wed, 8 May 2013 07:31:37 -0400
> Carl Eastlund wrote:
>
> > On Wed, Ma
On 3 May 2013 22:49, Jose A. Ortega Ruiz wrote:
> Of course, if anyone has the time and inclination to create an
> independent package, whatever Geiser does would be done using it.
>
Making an independent package is as simple as adding a standard comment
header sensible autoloads and then either
Correct, my message has nothing to do with the initial problem.
Jos
> -Original Message-
> From: Dmitry Pavlov [mailto:dpav...@ipa.nw.ru]
> Sent: miércoles, 08 de mayo de 2013 12:11
> To: Jos Koot
> Cc: users@racket-lang.org
> Subject: Re: [racket] ~r: formatting 0.0 with 'exponential
>
On Wed, 8 May 2013 07:31:37 -0400
Carl Eastlund wrote:
> On Wed, May 8, 2013 at 7:04 AM, Manfred Lotz
> wrote:
>
> > On Wed, 8 May 2013 06:19:27 -0400
> > Carl Eastlund wrote:
> >
> > > I'm seeing similar results on my end; I timed by first running
> > > "raco make" on both files, then timing
On Wed, May 8, 2013 at 7:04 AM, Manfred Lotz wrote:
> On Wed, 8 May 2013 06:19:27 -0400
> Carl Eastlund wrote:
>
> > I'm seeing similar results on my end; I timed by first running "raco
> > make" on both files, then timing "racket" on both. I think what
> > we're seeing is a small startup time
On Wed, 8 May 2013 06:19:27 -0400
Carl Eastlund wrote:
> I'm seeing similar results on my end; I timed by first running "raco
> make" on both files, then timing "racket" on both. I think what
> we're seeing is a small startup time cost on Typed Racket. I ran a
> longer benchmark and Typed Racke
I'm seeing similar results on my end; I timed by first running "raco make"
on both files, then timing "racket" on both. I think what we're seeing is
a small startup time cost on Typed Racket. I ran a longer benchmark and
Typed Racket edges out untyped Racket if I run a few million iterations
(giv
Hi Jos,
I have nothing sensible to say about line 340 and
the fix you propose (probably it is right), but the
initial problem with 0.0 originates not in line 340
but rather in lines 330-331
(if (zero? N-abs)
(values 0 0 (if exactly? significand-precision 0))
or line 311
[exponent (- signif
Hi there,
I did a small test using typed racket.
This is an example from the documentation:
#lang typed/racket
;; test.rkt
(struct: pt ([x : Float] [y : Float]))
(: distance (pt pt -> Float))
(define (distance p1 p2)
(sqrt (+ (sqr (- (pt-x p2) (pt-x p1)))
(sqr (- (pt-y p2) (pt-y p
I came across another thing:
#lang racket
(define x #e100.e-5)
(rational? x) ; #t
(log x) ; -inf.0
(exact->inexact x); 0.0
(~r x #:notation 'exponential) ; error inexact->exact: no exact
representation
number: -inf.0
I think this is introduced in line 340 of racket/format.rkt which contain
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