Nice, thank you very much. I think I'll gonna use it now.
Too bad for the delete key, it would be really useful to me :)
Is it normal that it does not work in the interaction window?
Laurent
On Tue, Dec 4, 2012 at 4:42 AM, Robby Findler
wrote:
> Thanks, Nadeem!
>
> Robby
>
> On Mon, Dec 3, 20
On Mon, Dec 3, 2012 at 5:07 PM, J. Ian Johnson wrote:
> Graph algorithms are often meant to be very fast, and different algorithms
> necessitate different representations. Two popular representations are
> adjacency lists and shared structures.
The representations usually used in general purpos
On Mon, Dec 3, 2012 at 9:17 AM, Matthew Flatt wrote:
> > I have tried the install-plain make target and it is indeed much
> > smaller, but it compiles/installs very little -- no raco, and
> > apparently very little byte-compiling, because the racket REPL takes
> > an age to load -- so it's basical
On Wed, Nov 28, 2012 at 5:23 PM, Daniel Farina wrote:
>
> I have tried the install-plain make target and it is indeed much
> smaller, but it compiles/installs very little -- no raco, and
> apparently very little byte-compiling, because the racket REPL takes
> an age to load -- so it's basically un
Really? What happened with the command I posted? It certainly works
for me here.
On Tue, Dec 4, 2012 at 12:03 PM, Kevin Tew wrote:
> On 12/04/2012 08:53 AM, Sam Tobin-Hochstadt wrote:
>>
>> On Wed, Nov 28, 2012 at 5:23 PM, Daniel Farina wrote:
>>>
>>> I have tried the install-plain make target
On Tue, Dec 4, 2012 at 9:00 AM, Nadeem Abdul Hamid wrote:
> Some improvements to DrRacket's "automatic parentheses" mode are now
> available in the nightly build version and git repository. If you have
> previous tried auto-parens and abandoned it, or if you have never tried it,
> please do try it
On 12/04/2012 08:53 AM, Sam Tobin-Hochstadt wrote:
On Wed, Nov 28, 2012 at 5:23 PM, Daniel Farina wrote:
I have tried the install-plain make target and it is indeed much
smaller, but it compiles/installs very little -- no raco, and
apparently very little byte-compiling, because the racket REPL
Nevermind, my bad, I was using a "uninstalled racket3m" binary.
~/src/racket/build/racket/racket3m
On 12/04/2012 10:06 AM, Sam Tobin-Hochstadt wrote:
Really? What happened with the command I posted? It certainly works
for me here.
On Tue, Dec 4, 2012 at 12:03 PM, Kevin Tew wrote:
On 12/04/
Should a Place (a true locally spawned Place via dynamic-place) be eligible
for Custodian management in a similar vein as with other resources such at
threads, sockets, ports et al?
Ray
Racket Users list:
http://lists.racket-lang.org/users
Is this a bug with the json module, or am I missing something about the
implementation?
It seems it crashes when serializing a hashtable that has strings for keys.
Symbols work fine.
ie,
>> (jsexpr->string (hash "id" 1 "title" "core"))
write-json: expected argument of type
BUT this works:
>>
The documentation for jsexpr? states that JS-expressions use symbols as
keys for hash tables, and strings for all other JSON-strings. Presumably
this is to improve the efficiency of hash table lookup.
http://docs.racket-lang.org/json/index.html
Carl Eastlund
On Tue, Dec 4, 2012 at 2:21 PM, Sco
Hi,
I just checked the spam folder on the gmail account that filters the
racket users list, and found a post that you sent (forwarded below).
The reason that gmail said for this is just:
Why is this message in Spam? It's similar to messages that were
detected by our spam filters. Learn more
[Bah, please ignore this, I didn't change the email address. There's
probably a second one that will follow...]
10 minutes ago, Eli Barzilay wrote:
> Hi,
>
> I just checked the spam folder on the gmail account that filters the
> racket users list, and found a post that you sent (forwarded below
Dear list members,
I'm a little confused about the difference between the definition of a
predicate and the definition of a flat contract. If someone could
clear that up I'd appreciate it.
1) AT ALL PLACES in the documentation where it uses the term
"predicate" does that mean a procedure th
On Tue, Dec 4, 2012 at 12:21 PM, Scott Klarenbach wrote:
> Is this a bug with the json module, or am I missing something about the
> implementation?
>
> It seems it crashes when serializing a hashtable that has strings for
> keys. Symbols work fine.
>
>
According to the documentation in:
htt
My bad, thanks!
On Tue, Dec 4, 2012 at 12:24 PM, Danny Yoo wrote:
>
>
> On Tue, Dec 4, 2012 at 12:21 PM, Scott Klarenbach wrote:
>
>> Is this a bug with the json module, or am I missing something about the
>> implementation?
>>
>> It seems it crashes when serializing a hashtable that has strings
I am a student in a Racket class would it be wrong to post any questions I
have on this group mailing list if i need help a problem or two
On Tue, Dec 4, 2012 at 3:39 PM, Scott Klarenbach wrote:
> My bad, thanks!
>
>
> On Tue, Dec 4, 2012 at 12:24 PM, Danny Yoo wrote:
>
>>
>>
>> On Tue, Dec 4
On Tue, Dec 4, 2012 at 1:52 PM, dman dus wrote:
> I am a student in a Racket class would it be wrong to post any questions
> I have on this group mailing list if i need help a problem or two
>
You may want to first check the policy of your class with regards to asking
for help; some academic
How does one bind an identifier to the matched structure?
In SML, Scala one can do something along the lines of s@S (x y z)
#lang typed/racket
(struct: Thing ())
(struct: Person Thing ([fname : String] [lname : String]))
(: person-name (Person -> String))
(define (person-name p)
(string-appen
On 2012-12-04 17:53:57 -0500, Ray Racine wrote:
>How does one bind an identifier to the matched structure?
You can use an `and` pattern. In your example:
(define js (Person "Joe" "Smith"))
(: do-it (Thing -> String))
(define (do-it thing)
(match thing
;; shadow `thing` here
You can use an `and' pattern:
(: do-it (Thing -> String))
(define (do-it thing)
(match thing
((and p [Person fn ln])
(displayln fn)
(person-name p
Vincent
At Tue, 4 Dec 2012 17:53:57 -0500,
Ray Racine wrote:
>
> [1 ]
> [1.1 ]
> How does one bind an
At Tue, 4 Dec 2012 13:31:38 -0500, Ray Racine wrote:
> Should a Place (a true locally spawned Place via dynamic-place) be eligible
> for Custodian management in a similar vein as with other resources such at
> threads, sockets, ports et al?
Yes, places are managed by custodians.
_
Good to know. May have missed it, but the Custodian doc does not mention
Place as a managed resource.
On Dec 4, 2012 6:56 PM, "Matthew Flatt" wrote:
> At Tue, 4 Dec 2012 13:31:38 -0500, Ray Racine wrote:
> > Should a Place (a true locally spawned Place via dynamic-place) be
> eligible
> > for Cu
On Fri, Nov 2, 2012 at 9:33 PM, Robby Findler
wrote:
> I've pushed a fix to this. Thanks to Matthew for looking into it and
> sorting it out and sorry for the delay.
I'm using git head and I'm still seeing this problem (Ubuntu 11.10). I
can't reliably reproduce it but in case it helps, it most re
Flat contracts includes more things than contracts. For example:
[robby@yanpu] ~/git/plt/collects/scribblings/reference$ racket
Welcome to Racket v5.3.1.9.
> (flat-contract? 'x)
#t
> (procedure? 'x)
#f
The flat-contract function is a holdover from the days when flat contracts
weren't able to be u
On Dec 4, 2012, at 8:08 PM, Carl Eastlund wrote:
> The following program works just fine:
>
> #lang racket
> (define-syntax (foo stx) #`(quote-syntax #,stx))
> (list foo)
#lang racket
(define-syntax (foo stx) #'7)
(list foo)
Hmph.
Racket Users list:
http://lists.racket
On Tue, Dec 4, 2012 at 7:49 PM, Robby Findler
wrote:
> Flat contracts includes more things than contracts. For example:
>
> [robby@yanpu] ~/git/plt/collects/scribblings/reference$ racket
> Welcome to Racket v5.3.1.9.
> > (flat-contract? 'x)
> #t
> > (procedure? 'x)
> #f
>
> The flat-contract funct
On Tue, Dec 4, 2012 at 7:28 PM, Carl Eastlund wrote:
> On Tue, Dec 4, 2012 at 7:49 PM, Robby Findler
> wrote:
>>
>> Flat contracts includes more things than contracts. For example:
>>
>> [robby@yanpu] ~/git/plt/collects/scribblings/reference$ racket
>> Welcome to Racket v5.3.1.9.
>> > (flat-contr
Hello, I am using DrRacket on Windows 7
I wonder how can I save screen to a file.
There might be some ways.
the way I tried is
simulate PrintScreen keystroke
and save clipboard to image file.
referring to racket document,
I tried
(define ke (new key-event%))
(send ke set-key-code 'print) or (send
On Tue, Dec 4, 2012 at 6:11 PM, Stephen Chang wrote:
> On Fri, Nov 2, 2012 at 9:33 PM, Robby Findler
> wrote:
>> I've pushed a fix to this. Thanks to Matthew for looking into it and
>> sorting it out and sorry for the delay.
>
> I'm using git head and I'm still seeing this problem (Ubuntu 11.10).
OK I see the docs to flat-contract? but not flat-contract
http://docs.racket-lang.org/reference/contract-utilities.html#(def._((lib._racket/contract/private/misc..rkt)._flat-contract~3f))
mention that flat-contracts are more than predicates. Those docs
don't mention it, but it appears from experim
It does that for symbols, but not everything.
This is the place you should be looking, I think.
http://docs.racket-lang.org/reference/contracts.html
Robby
On Tue, Dec 4, 2012 at 8:38 PM, Harry Spier wrote:
> OK I see the docs to flat-contract? but not flat-contract
> http://docs.racket-lang.or
You're going to have to synthesize a PrtSc keystroke and send that
directly to the PC's keyboard driver. Take the code in Q240653
(http://support.microsoft.com/?kbid=240653) and translate it from VB to
Racket's FFI.
On 12/4/2012 6:02 PM, 김태윤 wrote:
Hello, I am using DrRacket on Windows 7
I w
Yea, I didn't want to make a big deal out of it, but the up/down button
change did not fix the issue. In fact I'd say no impact positive or
negative.
It seems to happen when there is additional drawing 'complexity' in
co-occurrence with the pop up drawing area. I.e. the pop up menu is
drawing w
Are flat-contract and flat-contract-predicate equivalent?
> ((flat-contract 'x) 'x)
#t
> ((flat-contract-predicate 'x) 'x)
#t
> ((flat-contract 'x) 'y)
#f
> ((flat-contract-predicate 'x) 'y)
#f
>
Harry
On Tue, Dec 4, 2012 at 9:41 PM, Robby Findler
wrote:
> It does that for symbols, but not ever
Yes ..., I think so (well, eq? probably messes things up, as usual).
But that's a funny question! What's really going on there is that
flat-contract is coercing the value into a contract, and flat
contracts also acts as predicate functions (matching what the
contracts match). flat-contract-predica
Could what you're experiencing have anything to do with tooltips? It
seems my right-click menu doesn't stay up whenever there's a tooltip
out. Which is, like, every time I want it.
Neil ⊥
On 12/04/2012 07:55 PM, Ray Racine wrote:
Yea, I didn't want to make a big deal out of it, but the up/dow
37 matches
Mail list logo
