Is there a way to paste a pixel map (such as a .png ?) to
a face of one of the objects in pict3d? If so, I haven't found it.
I'd like to paint the objects with interesting textures.
-- hendrik
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On Sat, Sep 21, 2019 at 08:01:16PM -0400, Hendrik Boom wrote:
> On Sat, Sep 21, 2019 at 04:44:47PM -0400, Philip McGrath wrote:
> > I'm not sure if I understand your question; do you mean something like this?
> > #lang racket
> > (require syntax/parse/define)
> > (define-syntax-parser macro-list
>
On Sat, Sep 21, 2019 at 04:44:47PM -0400, Philip McGrath wrote:
> I'm not sure if I understand your question; do you mean something like this?
> #lang racket
> (require syntax/parse/define)
> (define-syntax-parser macro-list
> [(_)
>#'null]
> [(_ x0 x ...)
>#'(cons x0 (macro-list x ...)
Correction: "see which Scheme implementations come out with *Wasm* backends"
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Thanks. I'm currently running 6.12, so this may be what convinces me to go
ahead and upgrade.
-- Jonathan
On Sat, Sep 21, 2019 at 4:28 PM Philip McGrath
wrote:
> Use `~@` (sine Racket 7.0):
> (syntax-parse #'(1 2 2 a 2 2 b 2 c)
> [(1 (~seq n:nat ...+ x) ...)
>#'((~@ n ... x) ...)])
>
> -P
On 9/21/19 10:15 PM, Jonathan Simpson wrote:
Given this macro that I'm experimenting with:
(syntax-parse #'(1 2 2 a 2 2 b 2 c) [(1 (~seq n:nat ...+ x) ...) #'((n
... x) ...)])
How would I change it so that it returns #'(2 2 a 2 2 b 2 c) instead of
#'((2 2 a) (2 2 b) (2 c)) ?
I don't want t
caleb wrote on 9/21/19 11:27 AM
I'm a bit of a Racket noob--how extensive of a project is it to get Racket
running on x R6RS scheme?
I think there's a number of ways to do that, and to scope it, and I want
to just put some initial thoughts out there, rather than propose
requirements and part
I'm not sure if I understand your question; do you mean something like this?
#lang racket
(require syntax/parse/define)
(define-syntax-parser macro-list
[(_)
#'null]
[(_ x0 x ...)
#'(cons x0 (macro-list x ...))])
(macro-list 1 2 3 4 5)
-Philip
On Sat, Sep 21, 2019 at 4:29 PM Hendrik Bo
I've read the syntax-parse and its documentation, and I'd like to know
if there's a way for a macro to accept a varying number of parameters
without them having to be handled in a uniform way, spliced into a list.
I'd like to be able to expand
(foo a1 a2 a3 a4 a5)
into something like
(bar a1 (
Den lør. 21. sep. 2019 kl. 22.15 skrev Jonathan Simpson :
> Given this macro that I'm experimenting with:
>
> (syntax-parse #'(1 2 2 a 2 2 b 2 c) [(1 (~seq n:nat ...+ x) ...) #'((n ...
> x) ...)])
>
> How would I change it so that it returns #'(2 2 a 2 2 b 2 c) instead of
> #'((2 2 a) (2 2 b) (2 c
Use `~@` (sine Racket 7.0):
(syntax-parse #'(1 2 2 a 2 2 b 2 c)
[(1 (~seq n:nat ...+ x) ...)
#'((~@ n ... x) ...)])
-Philip
On Sat, Sep 21, 2019 at 4:15 PM Jonathan Simpson wrote:
> Given this macro that I'm experimenting with:
>
> (syntax-parse #'(1 2 2 a 2 2 b 2 c) [(1 (~seq n:nat ...+
Given this macro that I'm experimenting with:
(syntax-parse #'(1 2 2 a 2 2 b 2 c) [(1 (~seq n:nat ...+ x) ...) #'((n ...
x) ...)])
How would I change it so that it returns #'(2 2 a 2 2 b 2 c) instead of
#'((2 2 a) (2 2 b) (2 c)) ?
I don't want the parens around the individual sequences that I'
Thanks,
Your report shows even weirder things.
Best wishes, Jos
De: Gustavo Massaccesi
Enviado el: 21 September 2019 13:33
Para: Jos Koot
CC: Racket-Users List
Asunto: Re: [racket-users] scribble defproc looses parenthesis
It looks like an error to me. I made a bug report in
https://
On Sat, Sep 21, 2019 at 09:27:04AM -0600, caleb wrote:
> This is awesome.
>
> I'm a bit of a Racket noob--how extensive of a project is it to get
> Racket running on x R6RS scheme?
If you mean running R6RS scheme on Racket,
I suspect it's as simple as starting with
#lang r6rs
instead of
#
I haven't figured out how to forbid the use of length in submitted code. I'm a
little lost with
:language
:with-submission-bindings
I did understand
:requires
so I'm able to let submissions use extra libraries, but I'd like to forbid,
say, length in '(special beginner) too.
Thanks!
-
This is awesome.
I'm a bit of a Racket noob--how extensive of a project is it to get
Racket running on x R6RS scheme?
Neil Van Dyke writes:
> FYI, a proof-of-concept of compiling a good subset of Scheme to WebAssembly:
>
> https://github.com/google/schism
>
> It relies on two experimental(?) Wa
I don't know if I'm doing this right, but I wanted to write the student's grade
after writing the submission report. I had to provide get-student-score in
grading-utils.rkt. I'd be surprised if I'm the first one to need this, so I
think I'm probably misunderstanding things.
Also, just to lear
‐‐‐ Original Message ‐‐‐
On Friday, September 20, 2019 3:04 PM, gfb wrote:
> Yes, the How To Design Programs (and possibly DeinProgramm ) tool relies
> on the Test Engine tool.
>
> If you have a moment to do so, I'd encourage filing this consequence as an
> issue on GitHub.
Done.
It looks like an error to me. I made a bug report in
https://github.com/racket/scribble/issues/211 because it is easy to track
the problem there.
You can subscribe to the issue to get any update, or I can try to remember
to post any (big) update here.
Gustavo
On Sat, Sep 14, 2019 at 2:05 PM Jos
Den lør. 21. sep. 2019 kl. 10.05 skrev Marc Kaufmann <
marc.kaufman...@gmail.com>:
> Could I use the send/forward to essentially disable forms if I use as the
> `action` attribute on the form an (embed-url ...), which will no longer
> work later on? This will probably through an error if people do
I haven't had the time to test it, but I am wondering if calling
(clear-continuations-table!) which send/forward does will delete all
continuations, even those of other users. So suddenly links that other
users want to use will also get wiped out. I probably won't have time to
test today, but will
A few days ago I posted about adding maps to the DrRacket REPL -- while a
nice demo, this is not why I implemented the `map-snip%` object. The
reason I implemented it is because I wanted to add maps to an interface
which was designed for displaying plots produced by `plot-snip`. While
this i
Could I use the send/forward to essentially disable forms if I use as the
`action` attribute on the form an (embed-url ...), which will no longer
work later on? This will probably through an error if people do the 'Go
back, resubmit' cycle, but I don't mind throwing an error on that, rather
than gr
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