I found this task challenging too, so I made a Scribble-derived DSL that's
natively oriented toward making X-expressions, for instance:
#lang pollen/markup
◊title{Bottles --- ◊italic{Abridged}}
◊(apply itemlist
(for/list ([n (in-range 100 0 -1)])
◊item{◊(format "~a" n) bottles.}))
O
On Tue, Nov 3, 2015 at 8:07 PM, Jon Zeppieri wrote:
> Ok, I just pushed an update to the tzinfo package. It make take a
> little while for the package catalog to notice the change.
>
Actually, the package catalog already noticed it, so you should be
able to update that package now.
Thanks for th
Ok, I just pushed an update to the tzinfo package. It make take a
little while for the package catalog to notice the change.
-Jon
On Tue, Nov 3, 2015 at 6:59 PM, Jon Zeppieri wrote:
> On Tue, Nov 3, 2015 at 6:44 PM, William J. Bowman
> wrote:
>> On Tue, Nov 03, 2015 at 06:37:59PM -0500, Jon Ze
Hi,
is there a way to to generate xexprs for consumption of the web server
I thought making a simple wiki with scribble as the syntax might be fun, but
I'm tripping at this first hurdle i.e. (scribblestring->xexpr a-string) ->xexpr
Any suggestions appreciated
Stephen
#lang racket
(require
On Tue, Nov 3, 2015 at 6:44 PM, William J. Bowman
wrote:
> On Tue, Nov 03, 2015 at 06:37:59PM -0500, Jon Zeppieri wrote:
>> Okay, that is odd. I'll try reinstalling from scratch on my own machine to
>> make sure I didn't introduce a bug at some point. That's also where my
>> zoneinfo DB is too,
On Tue, Nov 03, 2015 at 06:37:59PM -0500, Jon Zeppieri wrote:
> Okay, that is odd. I'll try reinstalling from scratch on my own machine to
> make sure I didn't introduce a bug at some point. That's also where my
> zoneinfo DB is too, so I'd expect it to behave the same way. I am running
> macos,
Okay, that is odd. I'll try reinstalling from scratch on my own machine to make
sure I didn't introduce a bug at some point. That's also where my zoneinfo DB
is too, so I'd expect it to behave the same way. I am running macos, but I
don't see why that should make any difference.
By the way, do
I'm running Arch Linux, and the zoneinfo database is in /usr/share/zoneinfo.
--
William J. Bowman
On Tue, Nov 03, 2015 at 06:20:54PM -0500, Jon Zeppieri wrote:
>
> What OS are you using, and to you happen to know if/where the zoneinfo
> database is on your system? If the problem is that your d
Though, looking at the stack trace, it seems like something in my path
manipulation code is probably at fault. For some reason, it appears to be using
a path that's prefixed with ../ when it shouldn't, but I'll need to know where
your zoneinfo is to be sure. It's *probably* in /usr/share/zoneinf
What OS are you using, and to you happen to know if/where the zoneinfo database
is on your system? If the problem is that your database is in a location that
Gregor doesn't expect, I'll be happy to fix that. If you don't have the
database, at all (which would be odd for a modern UNIX), you can
On Tuesday, November 3, 2015 at 5:55:58 PM UTC-5, Brian Adkins wrote:
> On Tuesday, November 3, 2015 at 5:46:23 PM UTC-5, Brian Adkins wrote:
> > This is my own fault, but maybe Dr Racket could be made a little clearer. I
> > had hit -+ a few times to increase the font size, and I wanted to go
>
On Tuesday, November 3, 2015 at 5:46:23 PM UTC-5, Brian Adkins wrote:
> This is my own fault, but maybe Dr Racket could be made a little clearer. I
> had hit -+ a few times to increase the font size, and I wanted to go
> back to the default. -0 did not work as expected, then I checked the
> menu
I get the following contract error when installed Gregor (the excellent
date and time library) on my machine.
Any one know if this is a problem with my setup and if so how to
resolve?
; find-relative-path: contract violation
; expected: (and/c path-for-some-system? simple-form?)
; given: #
;
This is my own fault, but maybe Dr Racket could be made a little clearer. I had
hit -+ a few times to increase the font size, and I wanted to go back to
the default. -0 did not work as expected, then I checked the menus and
didn't find anything. Then I pulled up preferences which opens to the Fo
> On Nov 3, 2015, at 12:32 PM, Alex Knauth wrote:
>
>
>> On Nov 3, 2015, at 3:01 PM, 'John Clements' via Racket Users
>> wrote:
>>
>>> On Oct 29, 2015, at 10:01 AM, Marco Faustinelli
>>> wrote:
>
>>> I see that during a debugging session I can hover above an expression and
>>> rightclick
> On Nov 3, 2015, at 3:01 PM, 'John Clements' via Racket Users
> wrote:
>
>> On Oct 29, 2015, at 10:01 AM, Marco Faustinelli
>> wrote:
>> I see that during a debugging session I can hover above an expression and
>> rightclick to send its value to the console or so set! it something else.
>>
> On Oct 29, 2015, at 10:01 AM, Marco Faustinelli
> wrote:
>
> This question has been asked in 2012 and the fact that no reply has been
> posted makes me think this is a dead track. But nevertheless...
>
> I see that during a debugging session I can hover above an expression and
> rightclick
Holdouts who never adopted the new-fangled internal `define` still find
`begin`'s semantics to be quite simple and intuitive. :)
I suspect that people like internal `define` because it looks simpler
than `let`.
However, if simplicity is one's motivation for teaching internal
`define` rather
The naive model for begin is to think of it as a function that returns its last
argument (assuming left-to-right evaluation).
So that doesn’t scale.
The example without begin you mention indeed behaves the same, and that follows
from the model of “let has an implicit begin” that I tell them abo
I think its more a complexity of “define” than of “begin” (though begin is
certainly tricky be because it can introduce and internal definition context).
Your student’s program has the same behavior as this program without the begin,
since the let also introduces a definition context:
(let ([y
At Tue, 03 Nov 2015 17:30:38 +0300, Dmitry Pavlov wrote:
> Actually, extflonums in my 32-bit Windows installation
> are supported on the first sight. But as soon as I run an actual
> program, I get the following error message:
>
> unsafe-extfllong_double_mult: unsupported on this platform
>
> FWI
Matthew,
But current 32-bit Windows
nightly builds do not provide it either. I did not notice when they
stopped to provide it.
When I try the 32-bit Windows builds, they seem to have extflonums enabled.
Oh, sorry. It has turned out that I was jumping to conclusion
on this one.
Actually, ex
Thanks all! This is helpful — the mental model of begin that I presented to my
students was too simple to account for defines.
-- Éric
> On Nov 2, 2015, at 10:00 PM, Scott Moore wrote:
>
> The relevant part of the reference for these “internal definition contexts”
> is here:
> http://docs.r
Thanks, your blog post very succinctly summarizes what I have been
looking for as a feasibility analysis. We are in quite similar places of
thinking about the scientific computing present and looking to the
scientific computing future.
It doesn't look like Racket (or anything) will be an easy repl
John,
> I am exploring whether Racket could be a Lisp replacement for
> Python in scientific and engineering calculations. I currently use
> Python extensively in teaching chemical engineering courses
> (http://kitchingroup.cheme.cmu.edu/pycse/) and in running molecular
> simulations (http://
Hi John,
I am a PhD student doing a degree in chemical engineering. I am doing some
process modelling work using MIT-Scheme (scmutils to be precise) at the moment
but I would like to port it to Racket, which is feasible, but does require some
extra work:
- Racket already has great plotting lib
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