Yep, printing that out is indeed all I want. I hadn't thought about the
fact that 'print and 'display will show up in standard output.
John, how do you use drrackt's log handlers, are you running the server via
Drracket or did you mean something different.
I can't use daemontools for reasons to d
Hi,
I'm using Racket v6.4.
I tried to run an Algol 60 program (that worked in the past) by
selecting the Algol 60 option in the experimental languages section. I got
the following error message.
for-body43686: unbound identifier;
also, no #%top syntax transformer is bound in: for-body4
> On Mar 17, 2016, at 11:50 AM, Marc Kaufmann wrote:
>
> Hi all,
>
> I do not want people to see "Contract violation: massive stack trace
> documenting my brilliance as a programmer" every time they hit a bug on my
> website.
>
> Currently I show them simply an error page and redirect the tr
> On Mar 17, 2016, at 4:48 PM, Marc Kaufmann wrote:
>
> Yep, printing that out is indeed all I want. I hadn't thought about the fact
> that 'print and 'display will show up in standard output.
>
> John, how do you use drrackt's log handlers, are you running the server via
> Drracket or did y
Hi Matthew
Do you want the leftmost, longest substring matching the predicate?
E.g. something like (substring/p string->number "foo-46.3bar12789") returns
"-46.3"?
Dan
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Matthew writes:
> The idea of a subset of Racket that compiles to this kind of
statistically probable subset of JS is very appealing.
Agreed. The way Jens has split it up is that Urlang is a thin, cleaned-up
Racket-ish syntax for ES5, with a bit of sugar and a macro capability.
Then there's rjs,
On Thu, Mar 17, 2016 at 4:17 PM, Matthew Butterick wrote:
>
> On Mar 17, 2016, at 2:05 PM, Andrew Gwozdziewycz wrote:
>
> I am imagining an API that utilizes SCSH style regexes but allows you to
> do something like this (fictional):
>
> (define-values (area prefix line) (sre-match (: (= digits 3
On Mar 17, 2016, at 2:05 PM, Andrew Gwozdziewycz wrote:
> I am imagining an API that utilizes SCSH style regexes but allows you to do
> something like this (fictional):
>
> (define-values (area prefix line) (sre-match (: (= digits 3) (_? "-") (=
> digits 3) (_? "-") (= digits 3
Racket's
It's great. Check out the various libraries of the web-server. I'd
suggest starting from web-server/servlet-env and web-server/dispatch.
Jay
On Fri, Mar 18, 2016 at 5:00 PM, Kaylen Wheeler wrote:
> Hi,
>
> I'm new to Racket, but not to lisp. I have been a Clojure user for some
> time. I began
What is the best approach to destructuring strings using predicates? For
instance "match a substring for which `string->number` is true."
I can approximate this using `regexp-match-positions` and stepping through
possible substrings, testing until one matches, etc.
But I notice that this amou
Hm, it sounded like I needed sudo rights to run daemontools if I want to
use it to start racket as sudo (I may be wrong). Either way, the admins
told me no, so no it is. Either supervisord or daemontools are of course
several steps up from my previous way of doing things (which may justify
their re
Ir works fine.
I must have overlooked something in the docs.
Thanks again.
Jos
_
From: Scott Moore [mailto:sc...@thinkmoore.net] On Behalf Of Scott Moore
Sent: miércoles, 16 de marzo de 2016 18:05
To: Jos Koot; Racket Users
Cc: Jos Koot
Subject: Re: [racket-users] dynamic-require
If t
Could anyone currently working through or teaching SICP please try out
the new `#lang sicp` support, in Jens Axel Sogaard's `sicp` package in
the new package system?
http://docs.racket-lang.org/sicp-manual/
If you find any problems with this, please let me and Jens Axel know.
I'd prefer to sh
Ah, very nice. Do I infer correctly that the predicates are greedy
left-to-right?
#lang racket
(require match-string rackunit)
(define (no-digits x) (regexp-match #px"^\\D+$" x))
(check-equal?
(match "foo42.3bar"
[(string-append (? no-digits) (? string->number x) rest) x]
[else 'no])
"
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