I guess you probably need to step back and understand how things tend to
mutate this hash and look for another construct that more accurately
captures the interesting use cases for mutating the hash. That is, hash
mutation is a kind of do-anything assembly language and until you have a
good handle
Todd wrote:
This is clearly a problem with you academic types not knowing how
things work in the real world. San Francisco is *full* of people who,
for the right price, will be happy to rifle through Mr. Dlouhy's
things until they find the videos or determine that he doesn't have
them. They migh
I was able to get in touch with Jeff, and am working with him to get the
videos ready. I'll post updates as I go.
Thanks,
Dave
On 05/15/2012 03:29 PM, John Clements wrote:
On May 15, 2012, at 2:03 PM, Todd O'Bryan wrote:
This is clearly a problem with you academic types not knowing how
thin
On May 15, 2012, at 2:03 PM, Todd O'Bryan wrote:
> This is clearly a problem with you academic types not knowing how
> things work in the real world. San Francisco is *full* of people who,
> for the right price, will be happy to rifle through Mr. Dlouhy's
> things until they find the videos or de
+1 It was really a wonderful opportunity last year.
On Tue, May 15, 2012 at 2:12 PM, Scott Hickey wrote:
> Are there any plans for a RacketCon 2012?
>
> Scott Hickey
>
>
> Racket Users list:
> http://lists.racket-lang.org/users
>
>
Racket Users list:
On May 15, 2012, at 3:02 PM, Danny Yoo wrote:
>
> The DIY offering is pretty new with limited doc.
>
> https://openshift.redhat.com/community/blogs/new-openshift-release-march-22-2012-nodejs-diy-cartridge-new-website-and-more
>
> https://openshift.redhat.com/community/blogs/a-paas-that-runs-an
>
>
> The DIY offering is pretty new with limited doc.
>
>
> https://openshift.redhat.com/community/blogs/new-openshift-release-march-22-2012-nodejs-diy-cartridge-new-website-and-more
>
>
> https://openshift.redhat.com/community/blogs/a-paas-that-runs-anything-http-getting-started-with-diy-applicat
On Tuesday, May 15, 2012, Chad Albers wrote:
> Definitely. Using Racket's hashes, I can duplicate the same functionality.
>
> But this hash mechanism bothers me, because I see a informal
> convention developing in Rack middleware, where the middleware starts
> injecting it's own state into the ha
This is clearly a problem with you academic types not knowing how
things work in the real world. San Francisco is *full* of people who,
for the right price, will be happy to rifle through Mr. Dlouhy's
things until they find the videos or determine that he doesn't have
them. They might even throw in
I don't understand why this code doesn't work :
(: & (case-> [True -> One] [False -> Zero]))
(define (& x) (if (eq? x #t) 1 0))
-> Type Checker: Expected Zero, but got One in: 1
Any idea ?
Racket Users list:
http://lists.racket-lang.org/users
On May 15, 2012, at 3:11 PM, Asumu Takikawa wrote:
> On 2012-05-15 10:49:20 -0400, Matthias Felleisen wrote:
>> (parameterize ([p 1])
>> (λ (zzz) ;; <= INCLUDING THE parameterize r while
>> not including parameterize p is an arbitrary choice
>
> I only included `
On 2012-05-15 10:49:20 -0400, Matthias Felleisen wrote:
>(parameterize ([p 1])
> (λ (zzz) ;; <= INCLUDING THE parameterize r while
> not including parameterize p is an arbitrary choice
I only included `r` because it is the only parameterization in the
source cod
https://github.com/RayRacine/rackos
Racket Users list:
http://lists.racket-lang.org/users
Are there any plans for a RacketCon 2012?
Scott Hickey
Racket Users list:
http://lists.racket-lang.org/users
On Tue, May 15, 2012 at 11:00 AM, Chad Albers wrote:
> injecting it's own state into the hash, with hacky namespaces on the
> keys to prevent key collisions. I would like to avoid that.
off the top of my head, it seems like if there is sharing, yet you
want to avoid collisions, then you either h
Definitely. Using Racket's hashes, I can duplicate the same functionality.
But this hash mechanism bothers me, because I see a informal
convention developing in Rack middleware, where the middleware starts
injecting it's own state into the hash, with hacky namespaces on the
keys to prevent key co
Just noticed that Redhat's OpenShift (their cloud thingy) has released a
DIY v0.1 cartrige to their PAAS offering. You can run up to 3 applications
free and while it's not official, they have specifically said that they
intend have a free offering indefinitely.
The DIY offering has all the machin
> In the Rack middleware in the chain, each piece of the middleware receives a
> hash which encapsulates the response/requests, and the middleware mutates
> this hash depending on the functionality it adds.
Could each middleware layer return the updated hash value? Racket has
functional hash tabl
Hi,
I'm working on project to port the Ruby Rack framework to Racket scheme.
If you're not familiar with Rack, it creates a layer to manage the http
response/requests, and a level of abstraction to build a chained list of
middle ware clients - each calling the next in chain.
Switching from from
Joe -
Jeff Dlouhy was an undergrad at Northeastern; he's since graduated and now
lives in San Francisco. Unfortunately, that means that I don't have much
way to get him to do anything.
Sam
On May 15, 2012 6:54 AM, "Joe Gilray" wrote:
> Sam,
>
> Any update on RacketCon videos? Any way that Jeff
It is hopeless. I believe it was an undergraduate and I believe we
currently have no way to contact this person.
Robby
On Tue, May 15, 2012 at 11:54 AM, Joe Gilray wrote:
> Sam,
>
> Any update on RacketCon videos? Any way that Jeff's advisor can be
> prevailed upon to at least ask him to releas
This code was generated in response to the user who sought to implement
run-length encoding of a bit-vector on Sunday night.
I didn't post this to the board b/c there's a much easier way to solve
problem using regular expressions, which Eli B. demonstrated.
But, the (infinite-k-pump) function st
Sam,
Any update on RacketCon videos? Any way that Jeff's advisor can be
prevailed upon to at least ask him to release the videos as they are?
Thanks,
-Joe
On Wed, Apr 4, 2012 at 8:44 AM, Sam Tobin-Hochstadt wrote:
> On Wed, Apr 4, 2012 at 11:35 AM, Greg Hendershott
> wrote:
> > I do think the
Thanks very much for
Neil's detailed outline for a solution;
and
Kevin's example code
I will digest them and ask questions again if I stumble into
issues.
--hp
On 05/13/2012 01:53 PM, HP Wei wrote:
Would you please suggest to me some links so that I can
get some info or even better
At Mon, 14 May 2012 18:52:33 -0400,
Ray Racine wrote:
> I love seeing all them little green boxes informing me that Typed/Racket
> has elided runtime operation. Some of my recent code is doing a great deal
> of processing (Vectorof Float) with vector-ref / vector-set!.
>
> I'm wondering if there
Yesterday, Kevin Tew wrote:
> Attached is a distributed places program that will do what you want.
>
> It requires the latest checkout from git head. You must have ssh
> public-key authentication setup on all the nodes. For easy use, it
> also requires that racket and remote-eval.rkt be installe
TWO DISTINCT ISSUES:
I have encoded the apparent first step in the reduction sequence via
submodules.
ISSUE 1: I am disturbed that submodule b is evaluated before submodule a.
ISSUE 2: What is the semantics of parameterize?
#lang racket
(module a racket
(require racket/control)
(d
On May 14, 2012, at 6:52 PM, Ray Racine wrote:
> I love seeing all them little green boxes informing me that Typed/Racket has
> elided runtime operation. Some of my recent code is doing a great deal of
> processing (Vectorof Float) with vector-ref / vector-set!.
>
> I'm wondering if there is
I'd like to write a program (in Arc, which is a language on top of Racket)
using the Twitter API. I'd like to use a library for Twitter, if one
exists. Does anyone know of one? I've looked on planet.racket-lang, and the
only two twitter-related libraries I can find are one using Twitter Basic
Authe
I've gotten a bit of help in #racket on freenode so far, but I'm still
facing a problem with this.
In Racket, I expect that this will get me a SHA1 hash (as bytes) of a
string, using a key:
(require web-server/stuffers/hmac-sha1
net/base64)
(define (str-to-hash private-key str)
(b
On Tue, May 15, 2012 at 1:49 PM, Matthew Flatt wrote:
> At Tue, 15 May 2012 06:31:13 -0500, Robby Findler wrote:
>> FWIW, the list? check that is inside first and rest caches its result
>> in the header information in the cons cells it traverses.
>
> In other words, `first and `rest' are amortized
Is the 'Script Plugin' an option for keybindings?
S.
The Script Plugin for DrRacket may help to create simple plugins, like
automatic text (or snip%s) insertion, text selection replacement (and much
more), without needing to restart DrRacket :
http://planet.plt-scheme.org/display.ss?package=scrip
On Tue, May 15, 2012 at 1:31 PM, Robby Findler
wrote:
> FWIW, the list? check that is inside first and rest caches its result
> in the header information in the cons cells it traverses.
I see. I was missing this piece of information.
Cheers
P.
Racket Users list:
http://l
At Tue, 15 May 2012 06:31:13 -0500, Robby Findler wrote:
> FWIW, the list? check that is inside first and rest caches its result
> in the header information in the cons cells it traverses.
In other words, `first and `rest' are amortized constant-time, due to
the use of the amortized constant-time
FWIW, the list? check that is inside first and rest caches its result
in the header information in the cons cells it traverses.
Robby
On Tue, May 15, 2012 at 3:06 AM, Pierpaolo Bernardi wrote:
> On Mon, May 14, 2012 at 8:16 PM, Jay McCarthy wrote:
>> They could be identical, but they are differ
On Mon, May 14, 2012 at 8:16 PM, Jay McCarthy wrote:
> They could be identical, but they are different because one set is
> about lists and the other is about pairs. The fact that pairs may be
> used to implement lists is immaterial.
>
> You should really never use the c[ad]*r functions unless you
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