Well, you can't do it like that, but you can like this:
#lang typed/racket
(: test0 (Integer [#:zero Integer] -> Boolean))
(define (test0 x #:zero [v 0])
(= x v))
I think the `Keyword' type is for symbols that happen to be keywords:
(cast '#:zero Keyword)
I believe there is currently no w
Hi Jens,
You are probably right (no pun intended!), but I was only looking at the
docs and since prime-strong-pseudo-single? is unexported and not in the
docs, I didn't see it.
I may not fully understand your code, but where do you put in the number of
trials (it is not in the signature of prime-
Greetings.
Should I be able to specify a function which can take keywords, in Typed Racket?
The 'define:' form suggests not, and an experiment with:
(define test0
(case-lambda:
(((x : Integer))
(= x 0))
(((x : Integer)
(k : Keyword)
(v : Integer))
(begin
(
Hi Joe,
2013/2/20 Joe Gilray :
> Racketeers,
>
> Thanks for putting together the fantastic math library. It will be a
> wonderful resource. Here are some quick impressions (after playing mostly
> with math/number-theory)
>
> 1) The functions passed all my tests and were very fast. If you need e
On Wed, Feb 20, 2013 at 7:01 AM, Matthew Flatt wrote:
> If you load this DLL via DrRacket, then you won't see output, because
> stdout isn't connected to anything in particular in a GUI appplication.
> That is, stdout at the C level is not redirected to the Racket current
> output port.
That bei
I did a google search for log-gamma and then browsed around the
documentation. I think the issue is I was poking through the "Special
Functions" and statistics functions sections, but the binomial stuff is
under the "flonum" section, even though fllog-gamma can be found in
"Special Functions." May
On Wed, Feb 20, 2013 at 3:06 PM, Matthew Flatt wrote:
> The problem is that DrRacket sets various other parameters that affect
> compilation --- so that the programs you run within DrRacket get
> automatically compiled, for example.
>
> It's possible that things used to work back before `Populate
You're welcome!
A user not finding a documented function is excellent feedback. It means
we need to communicate better. Do you remember how you searched for a
combinations function?
Neil ⊥
On 02/20/2013 08:45 AM, Luke Vilnis wrote:
Ha! Sorry for not reading the documentation more thoroughly
Ha! Sorry for not reading the documentation more thoroughly - I hope this
was at least a bit educational to someone besides me :) Fantastic library
and docs, by the way.
On Wed, Feb 20, 2013 at 10:38 AM, Neil Toronto wrote:
> On 02/20/2013 06:42 AM, Luke Vilnis wrote:
>
>> No problem. They should
On 02/20/2013 06:42 AM, Luke Vilnis wrote:
No problem. They should be faster even for fairly small numbers since
they usually require the evaluation of a polynomial (an approximation of
(log)gamma) versus repeated multiplication/division. From memory the
code should be something like:
(exp (fllo
On 02/19/2013 05:28 PM, Joe Gilray wrote:
Racketeers,
Thanks for putting together the fantastic math library. It will be a
wonderful resource. Here are some quick impressions (after playing
mostly with math/number-theory)
The thanks in this case goes to Jens Axel, who wrote almost all of the
If you load this DLL via DrRacket, then you won't see output, because
stdout isn't connected to anything in particular in a GUI appplication.
That is, stdout at the C level is not redirected to the Racket current
output port.
If you use a command shell, run plain Racket, and then call the DLL,
th
The problem is that DrRacket sets various other parameters that affect
compilation --- so that the programs you run within DrRacket get
automatically compiled, for example.
It's possible that things used to work back before `Populate "compiled"
directories' was on by default in DrRacket, and turni
At Tue, 19 Feb 2013 13:36:17 +0100, herak...@gmx.de wrote:
> is this the right direction?
>
> (with-handlers ([exn:fail? (lambda (exn) (printf "com-exp-file-exists"))])
> (set! Object (com-invoke COMOBJ "Method1" 2)))
Assuming that you want to catch exceptions that are raised by "
At Wed, 20 Feb 2013 11:48:02 +0100, herak...@gmx.de wrote:
> is there a method to adjust columns to contents in list-box% object??
>
> I search in the docs, but I cannot find such method with similar
> functionality.
There's currently no method to make a column's width match the width of
the colu
Hi Joe,
There is a straight way to calculate product.
(define (combinations n r)
(/ (for/product ([i (in-range n (- n r) -1)]) i)
(for/product ([i (in-range r 1 -1 )]) i)))
Regards,
haiwei
On 20 February 2013 14:44, Joe Gilray wrote:
> Hi Luke,
>
> Thanks for the knowledge. Do you ha
No problem. They should be faster even for fairly small numbers since they
usually require the evaluation of a polynomial (an approximation of
(log)gamma) versus repeated multiplication/division. From memory the code
should be something like:
(exp (fllog-gamma (+ 1.0 n)) - (fllog-gamma (+ 1.0 r))
By all means do so. Thank you -- Matthias
On Feb 20, 2013, at 7:50 AM, Tim Brown wrote:
> On 19/02/13 00:33, Matthias Felleisen wrote:
>>
>> Yes, that's the conclusion they come to but did they act on it?
>
> I suspect that with it being a Wiki in nature, any amount of discussion
> can go on
Folks,
I usually read the documentation for racket in the scribbled HTML form.
But today, I needed to print something from the PDF, which I find better
laid out for paper.
So I went to http://pre.racket-lang.org/docs/pdf/reference.pdf and noticed
that the first page has a "margin-note" which jus
On 19/02/13 00:33, Matthias Felleisen wrote:
Yes, that's the conclusion they come to but did they act on it?
I suspect that with it being a Wiki in nature, any amount of discussion
can go on around the Village Pump (or whatever), but it's up to the
contributors themselves to "act on it" themse
Hello friends,
is there a method to adjust columns to contents in list-box% object??
I search in the docs, but I cannot find such method with similar functionality.
Yours,
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