I have an existing c++ app that is entirely event-loop driven with epoll
and I am trying to figure out how to integrate Racket in the same thread
and allow the existing code to work as-is. I have read the docs about the
C api and the FFI but so far a straightforward and clean option is not
app
On Mon, Aug 03, 2020 at 02:01:16PM -0400, Philip McGrath wrote:
> Is this what you're looking for? https://pkgs.racket-lang.org/package/sgl
>
> -Philip
Yes, looks like it. Is it messing from the index for some good reason?
I'm not sure how the packaging works.
I end up at https://github.com/ra
I am pleased to announce that Clotho version 1.0.0 is available. You can find
it in the Racket package catalog at:
https://pkgs.racket-lang.org/package/clotho
Clotho provides controllable randomness functions for Racket programs, allowing
sequences of random values to be recorded, replayed, an
> On Aug 3, 2020, at 11:48, Hendrik Boom wrote:
>
> Still, it would be nice to find out how to get this information more
> directly instead of relying on functions that do much more than
> what I was asking for.
In general, there aren’t any. The ability of struct->vector to extract a
symbolic
Is this what you're looking for? https://pkgs.racket-lang.org/package/sgl
-Philip
On Sun, Aug 2, 2020 at 5:51 PM Hendrik Boom wrote:
> Time to rethink everything before I go further.
>
> So far I've found several opengl bindings.
> There's opengl, documented here:
>https://docs.racket-lang
On Mon, Aug 3, 2020 at 9:47 AM Hendrik Boom wrote:
> On Sun, Aug 02, 2020 at 08:58:54PM -0700, Sorawee Porncharoenwase wrote:
> > For DrRacket, it's possible via "Insert > Insert Image". It's been used
> in
> > HtDP. See https://htdp.org/2020-8-1/Book/part_prologue.html
>
> Now that's presumably
This release announcement mistakenly omitted two important contributors: Tim
Brown, and Dionna Amalie Glaze. Many thanks for their help!
John Clements
> On Aug 3, 2020, at 09:35, John Clements wrote:
>
> Racket version 7.8 is now available from
>
>https://racket-lang.org/
>
>
> * Racket
but beware, for
> (for-each
(lambda (x) (printf "~a: ~a\n" (~v x #:min-width 28) (struct->vector
x)))
(list "hello" (let () (struct string (n)) (string 5
"hello" : #(struct:string ...)
# : #(struct:string ...)
Ryan
On Mon, Aug 3, 2020 at
On Mon, Aug 03, 2020 at 05:06:51PM +0100, Laurent wrote:
> and yet:
>
> > (for-each
>(λ (x) (printf "~a: ~a\n" (~v x #:min-width 28) (struct->vector x)))
>`(hello "hello" 43110 #f #(h e l l o) #"hello" (h e l l o)
>,(new frame% [label ""])))
>
> hello : #
and yet:
> (for-each
(λ (x) (printf "~a: ~a\n" (~v x #:min-width 28) (struct->vector x)))
`(hello "hello" 43110 #f #(h e l l o) #"hello" (h e l l o)
,(new frame% [label ""])))
hello : #(struct:symbol ...)
"hello" : #(struct:string ...)
43
In general, the answer is “no,” mostly because it’s not clear in Racket what
“the type of a value” means. It’s difficult to come up with a definition that
would be useful enough to satisfy your criterion of not “having to guess it
first.” Consider: suppose you had a hypothetical `type-of` operat
Maybe try `struct->vector`, which works on any value iirc (from mobile,
can't test)
On Mon, Aug 3, 2020, 15:19 Hendrik Boom wrote:
> In plain, untyped Racket:
>
> It is possible to ask if a value is a symbol with symbol?
> It is possible to ask if a value is a string with string?
> etc.
>
> Is t
In plain, untyped Racket:
It is possible to ask if a value is a symbol with symbol?
It is possible to ask if a value is a string with string?
etc.
Is there a way to ask the type of a value without having to guess it first?
-- hendrik
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On Sun, Aug 02, 2020 at 08:58:54PM -0700, Sorawee Porncharoenwase wrote:
> For DrRacket, it's possible via "Insert > Insert Image". It's been used in
> HtDP. See https://htdp.org/2020-8-1/Book/part_prologue.html
Yes! That's where I saw this many years ago.
Now that's presumably something that wo
Racket version 7.8 is now available from
https://racket-lang.org/
* Racket CS may become the default Racket implementation in the next
release. With the improvements in this release, Racket CS provides all
of the functionality of Racket BC (the current default
implementation). If, betw
Sorry, I cherry-picked the doc example as an "easy" example that others
might be able to easily observe.
However, please imagine the following filesystem:
/var/tmp/test/1.txt
/var/tmp/test/2.txt
/var/tmp/test/3.txt
/var/tmp/test/4.txt
The following shows these files in order:
> (for/list ([f (
At Sun, 2 Aug 2020 18:38:18 -0700 (PDT), evdubs wrote:
> However, the docs also show:
>
> > (current-directory (collection-path "info"))
> > (for/list ([f (in-directory)])
> f)
> '(#
> #
> #
> #)
>
> Isn't this not getting sorted correctly? I am seeing that calls to
> (in-directory) d
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