Hello,
I was trying to compile Racket Textual from source in a Webfaction's shared
host machine. It's running CentOS 5.6.
After downloading and extracting the tarball, cd racket-textual-5.1.2/src/;
mkdir build; cd build; ../configure; make:
---
Sam Phillips samdphillips@... writes:
On Fri, Oct 8, 2010 at 4:40 PM, Jay McCarthy jay.mccarthy@... wrote:
I use dynamic-wind for this. If there is something better, I don't
know what it is. dynamic-wind is a little bit funny though because if
you capture continuations then the in/out
Sam Phillips samdphillips@... writes:
Hi All,
I understand using call-with-exception-handler/with-handlers/etc. to
catch exceptions in a block of code, but I'm at a loss to what the best
way to do a finally or cleanup action after a block of code. My
intuition is to use dynamic-wind,
Hi all!
I want to create macro for creating a DFA automaton (similar to one described
here:
http://www.cs.brown.edu/~sk/Publications/Papers/Published/sk-automata-macros/paper.pdf
)
My desire is that, for example, this form
(automaton init
(init : (c - more))
(more : (a - more)
dynamic-wind is the proper way to express 'finally' in Racket.
_
For list-related administrative tasks:
http://lists.racket-lang.org/listinfo/users
2011/8/11 Racket Noob racketn...@hotmail.com:
Hi all!
I want to create macro for creating a DFA automaton (similar to
one described
here: http://www.cs.brown.edu/~sk/Publications/Papers/Published/sk-automata-macros/paper.pdf )
My desire is that, for example, this form
(automaton init
On Fri, Aug 12, 2011 at 7:26 AM, Jay McCarthy jay.mccar...@gmail.com wrote:
2011/8/11 Racket Noob racketn...@hotmail.com:
(define-syntax automaton
(syntax-rules (: - END)
[(_ init-state
(state : transition ...)
...)
(letrec ([curr-state empty]
Unfortunately, that position in a 'case' expression is not a place
where macro expansion happens. You can, however, use a 'cond' instead
of 'case'.
Robby
On Fri, Aug 12, 2011 at 7:33 AM, Casey Klein
clkl...@eecs.northwestern.edu wrote:
On Fri, Aug 12, 2011 at 7:26 AM, Jay McCarthy
On Fri, Aug 12, 2011 at 7:39 AM, Robby Findler
ro...@eecs.northwestern.edu wrote:
Unfortunately, that position in a 'case' expression is not a place
where macro expansion happens. You can, however, use a 'cond' instead
of 'case'.
But you still can't use a macro like `process-state' to
On Fri, Aug 12, 2011 at 7:49 AM, Casey Klein
clkl...@eecs.northwestern.edu wrote:
On Fri, Aug 12, 2011 at 7:39 AM, Robby Findler
ro...@eecs.northwestern.edu wrote:
Unfortunately, that position in a 'case' expression is not a place
where macro expansion happens. You can, however, use a 'cond'
At Tue, 26 Jul 2011 00:37:41 -0300, Diogo F. S. Ramos wrote:
Is there a documented way to extend the racket/gui language with widgets
already present in Gtk?
For now, I'm particularly interested in using GtkSpinButton.
I'm using Ubuntu and Racket v5.1.2.3.
[Sorry for the delay in
Oh, that's my problem: i obviously don't understand what's the places where
macro expansion happens.
I ended up writing classical lisp non-hygienic macro instead.
It's a sad thing that I cannot find a book or text as clear as PG's On Lisp
that covers Racket's hygienic macros in such
Racket/Scheme language designers sometimes ask navel-gazing questions
like What does it really mean to return a value? -- asked
intelligently, not under the influence of psychoactives -- and this kind
of thinking soon leads to greater insight and to more powerful
programming language features.
We've made some repairs in that area since 5.1.2, but I don't know if
we've solved the problem that you're seeing. Which version of gcc are
you using?
At Fri, 12 Aug 2011 03:01:54 -0300, Rodolfo Carvalho wrote:
Hello,
I was trying to compile Racket Textual from source in a Webfaction's shared
Thank you, Neil.
I really appreciate your answer. I've just started programming with
syntax-rules and I see now that I have lot to learn further about these
scheme-way macros.
Unfortunately, i'm currently unable to produce this macro with syntax-rules or
syntax-case.
But i have done it in
On Fri, Aug 12, 2011 at 9:22 AM, Neil Van Dyke n...@neilvandyke.org wrote:
1. Without trying it, I'm pretty sure this particular syntax transformation
can be done in syntax-rules, but I'm not certain it can be done using only
the power of ... in syntax-rules, without a helper macro. Your life
Neil Van Dyke n...@neilvandyke.org writes:
(Pardon the writing in enumerations, but someone erroneously put caf
coffee in the decaf coffee carafe.)
Say *that* ten times fast.
_
For list-related administrative tasks:
Oh, that's my problem: i obviously don't understand what's the places where
macro expansion happens.
I ended up writing classical lisp non-hygienic macro instead.
It's a sad thing that I cannot find a book or text as clear as PG's On
Lisp that covers Racket's hygienic macros in such
On Fri, Aug 12, 2011 at 10:44 AM, Danny Yoo d...@cs.wpi.edu wrote:
Kent Dybvig's tutorial on syntax case was helpful for me:
http://www.cs.indiana.edu/~dyb/pubs/tr356.pdf
I second that recommendation. It was a huge help to me when learning
to write macros in Racket.
Thank you, beautiful people!
I'll take a look at Dybvig's article. And, i hope that upcoming book, Realm of
Racket, will contain non-trivial chapter about racket-way macros.
By the way, when will RoR be published? I'm so eager to see it! :)
Racket Noob
Date: Fri, 12 Aug 2011 11:05:30
2011/8/12 Racket Noob racketn...@hotmail.com:
Thank you, beautiful people!
I'll take a look at Dybvig's article.
Also:
http://blog.racket-lang.org/2011/04/writing-syntax-case-macros.html
Hmmm... we need some consolidation. This material belongs in the Guide.
Hello,
Is there a way to encode/escape binary data in query part of url.
For example :
(require net/url)
(define (escape-bytes bites)
%ff%ff)
(define hash (bytes 255 255))
(define a-url (string-url http://www.example.com/;))
(set-url-query! a-url (list (cons 'test (escape-bytes hash
I like how you show one way of converting a match to an object, and then
show a better way. What I did not like very much is how the first way is
really verbose and made me question whether to read on, and in
retrospect the way using match isn't much less verbose. Wouldn't a
simple (apply
I'm having some difficulty using local-expand with regards to stop
lists. Here's what I'm trying:
;;;
;; small-lang.rkt
#lang racket
(provide (except-out (all-from-out racket)
On Fri, Aug 12, 2011 at 1:25 PM, Danny Yoo d...@cs.wpi.edu wrote:
In which the first three lines are coming from compile-time, and I see
that my lift-to-toplevel macro is firing off, even though I placed it
in the stop-list of local-expand.
What's happening here is that the `#%module-begin'
The library already does some URL encoding for you, as % is an
illegal character in a query string, since that's the escape character
itself for arbitrary bytes, %25 gets translated down to...
;;;
(integer-char (string-number 25 16))
#\%
On Fri, Aug 12, 2011 at 1:39 PM, Danny Yoo d...@cs.wpi.edu wrote:
On Fri, Aug 12, 2011 at 1:37 PM, Sam Tobin-Hochstadt sa...@ccs.neu.edu
wrote:
On Fri, Aug 12, 2011 at 1:25 PM, Danny Yoo d...@cs.wpi.edu wrote:
In which the first three lines are coming from compile-time, and I see
that my
Darn it, I declared victory too soon, as usual. :)
I'm still running into the same problem even switching out with
#%plain-module-begin. Here's where I am now:
;
;;; small-lang.rkt
#lang racket
(provide
On 08/12/2011 11:37 AM, Sam Tobin-Hochstadt wrote:
On Fri, Aug 12, 2011 at 1:25 PM, Danny Yood...@cs.wpi.edu wrote:
In which the first three lines are coming from compile-time, and I see
that my lift-to-toplevel macro is firing off, even though I placed it
in the stop-list of local-expand.
On Fri, Aug 12, 2011 at 1:58 PM, Ryan Culpepper r...@cs.utah.edu wrote:
On 08/12/2011 11:37 AM, Sam Tobin-Hochstadt wrote:
On Fri, Aug 12, 2011 at 1:25 PM, Danny Yood...@cs.wpi.edu wrote:
In which the first three lines are coming from compile-time, and I see
that my lift-to-toplevel macro
That's what the Web Server stuffers do
http://docs.racket-lang.org/web-server/stateless.html#(part._stuffers)
On Fri, Aug 12, 2011 at 11:38 AM, Danny Yoo d...@cs.wpi.edu wrote:
The library already does some URL encoding for you, as % is an
illegal character in a query string, since that's the
On 08/12/2011 12:08 PM, Sam Tobin-Hochstadt wrote:
On Fri, Aug 12, 2011 at 1:58 PM, Ryan Culpepperr...@cs.utah.edu wrote:
On 08/12/2011 11:37 AM, Sam Tobin-Hochstadt wrote:
On Fri, Aug 12, 2011 at 1:25 PM, Danny Yood...@cs.wpi.eduwrote:
In which the first three lines are coming from
Hello,
I checked that the version of GCC in the machine is way too old.
GCC's website tells that GCC 4.4.6 is the oldest maintained release series.
So maybe it's better to don't invest any time in fixing anything.
I have a possibility to migrate to a newer server at Webfaction with newer
GCC.
On Saturday, Eric Hanchrow wrote:
I would like to put in a plug for my dear friend Rudybot, written
partly by Eli but mostly by me, now playing on #racket and #scheme
on Freenode:
https://github.com/offby1/rudybot
It's written completely by Eric! -- My contribution was mostly in
helping
I have a macro that restructures `let' binding lists, and I would like
to have it play nice with Check Syntax.
Here's an example:
(let ([x 1.2+3.4i])
body ...)
is expanded to:
(let ([x-real 1.2]
[x-imag 3.4])
body ...)
with references to `x' replaced by references to `x-real' and
2011/8/12 Racket Noob racketn...@hotmail.com:
It's a sad thing that I cannot find a book or text as clear as PG's On
Lisp that covers Racket's hygienic macros in such detailed manner. :(
Be sure to read TSPL's section on syntax-rules and syntax-case and
work through all of the problems.
It appears that compile-omit-paths doesn't prevent a scribble file
from being compiled, which is problematic if the scribble file
requires another module that includes image snips. We're seeing that
when we PLaneT install a package, that during compilation, we see this
error message:
raco
On Fri, Aug 12, 2011 at 9:00 PM, Robby Findler
ro...@eecs.northwestern.edu wrote:
I'm not following exactly-- are you saying that removing the
scribblings field causes fewer files to be compiled?
Yes. We're running into this situation when installing version 1.6 of tracer:
Since server part expects escaped data based on rfc 1738 , I assume
that it will not be able to interpret the data as base64 encoding.
As per bittorrent spec , the get request to tracker must have
info_hash(20 byte sha) escaped along with others.
Is there any other way to insert query part in url
This url http://localhost:8000/servlets/standalone.rkt?test=%ff
causes server to close connection whereas
http://localhost:8000/servlets/standalone.rkt?test=%23 does not , and
works as expected.
I suppose this is caused by use of net/url library, right?
On Fri, Aug 12, 2011 at 11:43 PM, Jay
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