At
file:///usr/share/doc/racket/foreign/Enumerations_and_Masks.html?q=_enum#%28def._%28%28lib._ffi%2Funsafe..rkt%29.__enum%29%29
procedure
( _bitmask symbols [ basetype ] ) → ctype?
symbols : ( or symbol? list? )
Trying:
(_bitmask '(a b))
_bitmask: bad spec in '(a b)
Can anyone explain the behavior that is observed here with the
parser-tools/lexer. I think I'm overlooking something but both precedence
and trying to make the longest match should be creating the expected
behavior (please see comments in the .rkt). Thanks for your help!
David
simple.rkt
Hello Racket Users;
I am learning to programme online using Racket but I a having problems opening
/ downloading the problems on my blackboard.
I then uninstall Rackett and right click to open in a new window. This it does.
Could you advice me what I did wrong and how to resolve this?
A
Greetings all! First post here.
Just finished my first significant project in Racket: writing parser in Racket
for my new Python/Racket fusion programming language (roughly 2000 lines of
Racket for the parser). The next phase is the runtime classes, which seems
less straightforward--wish me
It is the ones that it has special indentation rules for. Not super heplful
to you here, I know.
The specific conditional that you might be looking (if you wish to do
things differently) for is in framework/private/racket.rkt around line 1306
in the body of racket-lexer-wrapper. The first case of
On Jun 8, 2013, at 1:31 PM, Robby Findler ro...@eecs.northwestern.edu wrote:
It is the ones that it has special indentation rules for. Not super heplful
to you here, I know.
That sounds like this won't be super easy, but it's a start! Thank you Robby.
Who knows how to add indentation rules
(Possible irrelevant rambling, but I generally am very aware of my
code formatting, and this looked like a good point to highlight. It's
still probably picking on something that not many people care about as
much as I do...)
The style guide has a section labeled size matters -- it also has
I was coincidentally just thinking about this. I'm experimenting with
terse names myself right now.
I believe the general rule for consistent pain/gain is that the favoring
of the short name is proportional to both how frequently it's used and
how obvious it is. For-loops in C had better
Sorry about the multiple posts, but an idea just occurred to me to save
on name length in the case of name conflicts, like in the posted
fill-sack example. Example code:
(let ([n #1])
(let ([n-that-needs-new-name #2])
(+ n n-that...)
The inner most n will overwrite the outer one if the
If anyone is developing a Racket-related Web site and needs a domain
name, I have a few registrations that will expire soon...
* racket-club.com racket-club.org
* racket-rtfm.com racket-rtfm.org
* rackout.org
Any of these can be transferred for no charge from me, so long as it's
for a
On 2013-06-06 18:58:01 -0700, Vashtie Ellis wrote:
I am learning to programme online using Racket but I a having
problems opening / downloading the problems on my blackboard.
Can you describe what problems you are having in more detail? Can you
just right-click save the file to your desktop
This tension between clarity and line length is precisely why I wish
camelCase were more common in Lisp languages. When using clear multi-word
names, those hyphens between words can really eat up a significant
percentage of your line width.
Racket Users list:
The results you're seeing are consistent with longest match;
ILandroid is longer than I. The order of the [trigger action-expr]
pairs won't affect that. The order only affects which action is chosen
for an ambiguous match, but this case isn't ambiguous.
I don't think you can do what you're trying
Hi
I am a beginner programmer and just came across Racket this week when I was
on the Coursera website. I found the course called Intro to Systematic
Program Design. I am trying to use Stephen Bloch's Picturing Programs. But
my first attempt was using Quick-An Introduction to Racket with Pictures.
Did you follow the instructions in the part labeled 2 Set...? You
need to put #lang slideshow at the top of your definitions window
(replacing any #lang line that might already be there), and you need
to press Run after doing that.
On Sat, Jun 8, 2013 at 10:26 PM, Steve Lett
Make sure that if you're using Picturing Programs, don't skip Section 0.3
in:
http://picturingprograms.com/download/chap00.pdf
It talks about how to set up the software for the rest of the book. You'll
need to do it in order for things like circle to work.
Racket
Ah, sorry. If you've already set up DrRacket to use the student
languages, you need to undo that to do the Quick tutorial.
You'll need to go back to the Language - Choose Language... menu and
select the Racket language.
On Sat, Jun 8, 2013 at 11:04 PM, Jon Zeppieri zeppi...@gmail.com wrote:
Or, to put it another way, your language settings need to be different
for the Quick tutorial than for Picturing Programs.
On Sat, Jun 8, 2013 at 11:07 PM, Jon Zeppieri zeppi...@gmail.com wrote:
Ah, sorry. If you've already set up DrRacket to use the student
languages, you need to undo that to
-- Forwarded message --
From: Steve Lett steve.lett...@gmail.com
Date: Sat, Jun 8, 2013 at 8:25 PM
Subject: Re: [racket] Beginner problem
To: Danny Yoo d...@hashcollision.org
Thanks, but how do I install a library when my only internet connection is
on Android, Galaxy Tab? I have
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