I did so privately as well, but he said he doesn't have his password I
guess. I replied to that and pointed him to the users-request email option.
Hopefully that will help.
On Mon, Sep 29, 2014 at 3:34 PM, Neil Van Dyke wrote:
> I had privately pointed him to the URL to unsubscribe himself, but
I'm not certain, but I'm pretty sure following the instructions at the top
of the emails you are receiving would be a faster way to get what you want,
rather than spamming the whole list for every email you receive. I'll quote
them for your convenience (copied from the email you are replying to):
I've been trying to convince my Apple fanboy coworkers to learn a real
programming language like Racket for a while, but they always dismissed
everything I said because Apple can do no wrong. One of them posted his
notes from WWDC that included the following bullet point. Very vindicating.
(I don't
As someone who learned correct programming principles from HtDP (out of
classroom but with help from a PL professor), I'm glad it exists and I
think it hit the right balance for me, and probably works well in classroom
settings as well.
However, since I understand the value of HtDP from experience
Thanks for the suggestions. I will add those to my list.
Would it make sense to add any of these responses to the Learn page of the
Racket web site?
On Thu, Aug 29, 2013 at 12:17 PM, Asumu Takikawa wrote:
> On 2013-08-29 14:08:30 -0400, Greg Hendershott wrote:
> > 3. There are a few blogs that
I'm interested in learning more about Racket, macros, programming
languages, and anything else that will make me a better programmer. The
problem is, there is so much material out there that I'd appreciate help in
prioritizing what to do first.
As a background, I understand that using Racket is on
I just ran into this very thing today because I didn't realize the packages
were put into a submodule and I'm in the habit of not reading error
messages. However, after trying some things and getting this error multiple
times, I finally read it carefully. The answer is in your skimmed
"something so
I recently came across a site that made coming up with regular expressions
much, much easier for me: http://www.debuggex.com/
Hopefully that will help with your "regex hell" problem.
On Thursday, July 18, 2013, Greg Hendershott wrote:
> To add to what Carl and Robby said:
>
> On Thu, Jul 18, 201
The simplicity and DSL thread mentioned Java DSLs, and I came across an
example of one at http://camel.apache.org/java-dsl.html.
To me, this isn't really a DSL, it's more of a programming pattern. One of
the usage patterns on the wiki page for DSL is embedded DSL that uses the
syntax of the host l
I haven't heard of HtD Components or HtD Systems before. I can't seem to
find it after some quick googling (the closest I got was a draft of HtD
Classes).
Can you point me to these resources? I really enjoyed HtDP.
Ok, after a bit more searching I found a reference to components in the
intro of H
rough some of the struct docs, but couldn't find a way to introspect a
struct type.
On Fri, May 24, 2013 at 1:16 PM, Jay McCarthy wrote:
> On Fri, May 24, 2013 at 11:18 AM, Nick Shelley
> wrote:
> > The struct-copy docs say "The result of struct-expr can be an instance
&g
The struct-copy docs say "The result of struct-expr can be an instance of a
sub-type of id, but the resulting copy is an immediate instance of id (not
the sub-type)." Why is this?
For instance, I would hope this would work:
(struct posn (x y))
(struct 3d-posn posn (z))
(3d-posn-z (struct-copy pos
I'm sure you'll get more sophisticated responses soon, but this blog post
by John Carmack helped me understand the ideas and tradeoffs a bit. I'm not
sure everything in there is 100% correct or that I agree with everything,
but I think it provides a pretty good overview.
http://www.altdevblogaday.
I went to do my "tee" workaround that I assumed would work, and I
discovered that it suffers from the same issue. I then just ran the command
without Racket but included the pipe to tee and none of the output is shown
until the process finishes. The same thing happened when I pipe to less.
There's
; > yourself. You'd do something like
> >
> > (system* "/usr/bin/instruments" "-t" (path->string instruments-path)
> > (path->string app-path) "-e" "UIASCRIPT" (path->string script-path))
> >
> > roughly.
> &
I tried "file-stream-buffer-mode" on the stdout port and that didn't help.
That seems to be the only port that will work with that method.
I also realize I misled you when I put "" as a
placeholder in the code. Really it is a command of the form (format
"instruments -t ~a \"~a\" -e UIASCRIPT ~a" .
copies the data to the real port you want it to go to
> and then stdout (or whatever) and when you do that, you have to be careful
> to make sure ports get closed properly, or else you'll lose data, but it
> doesn't take much code and works well.
>
> Robby
>
>
> On
I have a script that runs some automated tests and logs the results to the
console. The tests can take 10+ minutes, so logging steps to the console is
informative. I'm using Racket to run the script with (system ...) and parse
the logs and report pass/failure, but to do that I have to capture the
l
First off, thanks Carl and Danny for the code. The thing is, the system
call to python works for our needs and is easier than rolling my own. The
reason I started this thread in the first place is because it seems like
outputting human-readable json is common and often desired (see the upvotes
in t
#x27;ve had good luck porting simple Python examples to Racket. Perhaps you
> could start with the Python code that works as you expect, port it to
> Racket, then refactor it to more Rackety ways:
> http://hg.python.org/cpython/file/cc0e72082e52/Lib/json
>
>
> On Tue, Apr 16, 2013 at 1:
ake
sure I wasn't missing it somewhere (which happens often with me).
On Tue, Apr 16, 2013 at 11:06 AM, Nick Shelley wrote:
> I ended up just doing a system call to Python as suggested here:
> http://stackoverflow.com/questions/352098/how-to-pretty-print-json-from-the-command-line
&
cause he's a
Python guy. I guess he wins this round...
On Sat, Apr 13, 2013 at 11:37 AM, Nick Shelley wrote:
> Is there a way to get formatted json output to a file? I couldn't figure
> out how to get pretty-print hooked in with write-json. I'm probably just
Is there a way to get formatted json output to a file? I couldn't figure
out how to get pretty-print hooked in with write-json. I'm probably just
missing something simple.
Racket Users list:
http://lists.racket-lang.org/users
ns change that state
to permanent or deleted. I don't see a need to track history. But again, I
have very little knowledge about this subject.
On Sat, Nov 24, 2012 at 12:16 PM, Nadeem Abdul Hamid wrote:
> On Sat, Nov 24, 2012 at 12:07 PM, Nick Shelley wrote:
>
>> For what it
For what it's worth, Xcode differentiates these cases by inserting a
temporary closing paren that is gray instead of black. You can make it
permanent by arrowing over it, typing it yourself, tabbing over it, or just
moving the cursor outside the matching parens. When it becomes permanent it
is blac
> > Add a print before the place start to see it. Seems to be broken since <
> > 5.2.1.
> >
> > On Thu, 18 Oct 2012 06:39:56 +0200, Nick Shelley >
> > wrote:
> >
> > > It looks like that was the problem. Thanks!
> > >
> > > Howeve
'm missing?
On Wed, Oct 17, 2012 at 10:26 PM, Robby Findler wrote:
> Does your racket program exit before the place runs?
>
> Robby
>
> On Wed, Oct 17, 2012 at 11:12 PM, Nick Shelley
> wrote:
> > It's usually the case that I'm just missing something obviou
It's usually the case that I'm just missing something obvious, but when I
have a file that just creates a place that prints something and I run it in
DrRacket, I see the thing printed after a slight pause, but when I run the
file with the racket executable from the command line, I don't see
anythin
o'
> program?
>
> On Fri, Sep 28, 2012 at 3:36 PM, Laurent wrote:
> > Can't you write
> > (build-path (getenv "WORKSPACE") )
> > ?
> >
> > Laurent
> >
> > On Fri, Sep 28, 2012 at 11:30 PM, Nick Shelley
> > wrote:
>
I can't seem to find a path function that deals with environment variables.
Is there some variant of cleanse-path that resolves environment variables
first?
Concretely, I have an environment variable $WORKSPACE that tells where I'm
operating from. The result of (getenv "WORKSPACE") is the correct
lled the most
recent changes and, lo and behold, it was fixed and works great.
Thanks again.
On Wed, May 16, 2012 at 1:44 PM, Nick Shelley wrote:
> Thanks for pointing out the 'no-sheet option. I guess I missed that in the
> docs.
>
> I played with the work-around for a bit and could
I'm definitely not the expert on this, but I just quickly subtracted the gc
time from the cpu time and the times look pretty consistent:
> (- 7176 4537)
2639
> (- 5600 2949)
2651
> (- 4040 1388)
2652
Also, I would guess that cpu time adds the time of all cores or threads or
whatever, so I assume
he 'no-sheet fix to be pushed since what I'm working on
isn't very urgent.
Thanks again for responding.
On Wed, May 16, 2012 at 7:38 AM, Matthew Flatt wrote:
> At Wed, 9 May 2012 20:06:15 -0600, Nick Shelley wrote:
> > When I assign a frame as a dialog's parent, the
more
convenient.
On Fri, May 11, 2012 at 1:39 PM, Nick Shelley wrote:
> Sorry to be imprecise. It lists all menu actions plus many standard text
> actions. Here's a screenshot of the last menu actions followed by some
> selection actions.
>
> On Fri, May 11, 2012 at 1:32 PM, Luke Vil
On the topic of key bindings, is there a reason this can't be done in the
preferences menu? Xcode has a key bindings section in the preferences menu
that has all possible actions on the left and the current bindings on the
right, and you can just click on the current binding and change it to
whatev
When I assign a frame as a dialog's parent, the title of the dialog isn't
shown, but when I leave the parent as #f, the dialog shows up in the middle
of the screen even though the window may be in a totally different place.
Is there a way to have a frame as the parent and still have the title
displ
Sending these responses to the group.
On Wed, May 9, 2012 at 4:22 PM, Nick Shelley wrote:
> Thanks for the link, I should definitely go through that.
>
> However, after quickly looking through the problem set, it seems like
> these are problems made for features, not features
This sounds a lot like Paul Graham's "Blub Paradox" from
http://www.paulgraham.com/avg.html.
My experience with Racket is that I initially hated it because I didn't
understand it, but now that I'm past that pettiness I use Racket whenever I
have a choice. However, I'm certain I don't use the full
st flow-spacer)
> (list flow-spacer flow-spacer
> flow-spacer flow-spacer))]
> -[one-ok? (tagged+arg-width . < . 60)])
> + [one-ok? (and (not (eq? mode 'new)) (tagged+arg-width
> . < . 60))])
Only beside. But how can I then take care that the text are
displayed into the empty-scene. I think you need overlay or something for
that.
Every image function returns an image, so you can use beside to create an
image of your text with the cursor in the right spot, and then place that
i
I don't have much gui programming experience, so sorry if this is a dumb
question.
I want to draw a bunch of rectangles and sub-rectangles on a canvas and
have something happen when each sub-rectangle is moused over. I was
thinking about just making each sub-rectangle its own canvas so it can
hand
Punny, right? Anyway, I can't figure out how to get DrRacket to indent like
this:
(define<../reference/define.html#(form._((lib._racket/private/base..rkt)._define))>
msg
(new<../reference/objcreation.html#(form._((lib._racket/private/class-internal..rkt)._new))>
message% [parent frame]
Maybe someone should make a tool that strips the newlines out of macro
definitions so they all meet the "10 lines or less" requirement. After all,
isn't law mainly about finding loopholes?
On Fri, Apr 6, 2012 at 1:22 PM, Brian Mastenbrook wrote:
> On 04/06/2012 03:06 AM, Eli Barzilay wrote:
>
>>
I guess I'm not the only one who was confused by this. To get to bugs page,
you need to go to the documentation section of the site and then on the
left there is a "report a bug" link. I personally would expect this link to
be in the community section.
Maybe it's purposefully hidden so people use
You should look into the composing image functions available. The beside
function should make it so you don't need to calculate exactly where the
cursor should be displayed.
On Thu, Apr 5, 2012 at 11:39 AM, Roelof Wobben wrote:
> Op 5-4-2012 19:28, Danny Yoo schreef:
>
> http://www.ccs.neu.edu/
One thing to consider: "if" takes a boolean value as the first part. The
function "string?" evaluates to a boolean value, so you can just use this
result directly instead of seeing if it is equal to "true."
In other words, you could simplify the first part to (if (string? s) ...)
In general, you
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