In addition to the other suggestions, if you can express the thing you
want to generate as a contract, the contract library will generate
random instances of it. But it doesn't have the tuning of weights
you're looking for.
Robby
On Thu, Jun 6, 2019 at 3:41 PM Eric Eide wrote:
>
> Ryan Kramer w
On Thu, May 30, 2019 at 8:03 AM Laurent wrote:
> I suspect that if Matthew feels a need to ask about this, this means the
> price of backward compatibility to pay for all of us may be quite significant.
Not one to put words in Matthew's mouth, but I presume that he is
hopeful that no one is actu
DrRacket doesn't currently know about the difference between those two
(it just evaluates the program and eval knows what it is doing, but
doesn't currently tell).
There is a related thing, tho: when debugging is turned off, if you
see a green bubble (it will have little spikeys on it), then click
Great! I've pushed it. Hopefully the docs make it clear how to define
the C you wanted earlier. If they don't let me know and I'll fix 'em.
Robby
On Wed, May 8, 2019 at 11:21 AM William J. Bowman
wrote:
>
> Yeah, I think I would be.
>
> On Wed, May 08, 2019 at
Hi William: are you agreeing that if redex added a new pattern that
you would be in good shape or not?
Thanks,
Robby
On Wed, May 8, 2019 at 10:05 AM William J. Bowman
wrote:
>
> On Wed, May 08, 2019 at 08:31:26AM -0500, Robby Findler wrote:
> > On Tue, May 7, 2019 at 9:19 PM Willi
On Tue, May 7, 2019 at 9:19 PM William J. Bowman
wrote:
>
> On Tue, May 07, 2019 at 03:55:09PM -0500, Robby Findler wrote:
> > I can agree that the current definition isn't the best one, but this
> > one doesn't seem right. I mean, this requires that both sides step?
On Mon, May 6, 2019 at 2:11 PM William J. Bowman
wrote:
>
> I took a quick look at the implementation of `cross` and `compatible-closure`,
> and couldn't make sense of any of it.
> For now, I guess I'll manually write out the contexts, and discuss a feature
> request.
>
> I spoke to Max a bit abo
ure".
> To me, it's the obvious compatible closure, but apparently not.
> (It's the one the paper I'm reading calls "the congruence closure", as far
> as I
> can tell; the definition is missing, hence my Redex modeling.)
>
> --
> William J. Bowman
> (C ::= VT TT)
>
> and take the context-closure of C.
> (see attached)
>
> Can I get my hands on the generated VT and TT easily, or would I need to
> tweak
> Redex internals to automate this?
>
> --
> William J. Bowman
>
> On Fri, May 03, 2019 at 07:52:09PM
>
> > On May 3, 2019, at 20:02, Robby Findler wrote:
> >
> > Redex, when asked to create the compatible closure, creates a context
> > and then uses that. In this case, it will create a context something
> > like this:
> >
> > TT ::= hole | (\
Redex, when asked to create the compatible closure, creates a context
and then uses that. In this case, it will create a context something
like this:
TT ::= hole | (\ (x) TT) | (TT v) | (t VT) | (force VT) | (return VT)
VT ::= (thunk TT)
If you want something else (I'm not sure of an algorithm to
My guess is that the GUI system under 2htdp/image remembered the color
was drawn with an alpha value of 100 but there isn't enough resolution
to determine the difference between 50 and 48 when you are at 101/256
(or whatever the alpha as a percentage really would be ...).
Robby
On Fri, Apr 26, 20
Thanks for working on this, but Racket's `thread` construct is not
parallel (in the sense that you will not see more than one CPU active
on your machine at a time with code that uses `thread`).
Check out places and futures for alternatives that do support parallelism.
Robby
On Wed, Apr 24, 2019
ICFP 2018 should be available to all (and other years too). It was paid for
and I can get the PDF.
Could you send me more info?
Robby
On Sun, Apr 21, 2019 at 12:53 PM Greg Hendershott
wrote:
> On Sat, Apr 20, 2019 at 12:02 PM Norman Gray
> wrote:
> > On 20 Apr 2019, at 1:11, 'John Clements' v
I think it would be nice if there were a new library, pulled out of
the current slideshow/base that exported more pict-making functions
and didn't depend on these various things.
I've looked into this before and I came to the conclusion that it
didn't belong in pict because of the way it does font
Generate multiples of those and combine them (shifting old ones over
and adding new ones as the lowest digits)?
I'm not sure of a good way to generate nats uniformly at random where
you don't specify an upper bound, but Neil Toronto suggested something
crazy we used this paper:
http://users.cs.nor
It is control-left and control-right to go by words in DrRacket. If
you go to Edit|Keybindings|Show Active Keybindings and type "word"
you'll see those and the ones Matthias mentioned and some other
word-related keystrokes.
Robby
On Wed, Mar 13, 2019 at 1:24 PM Matt Jadud wrote:
>
> Hi all,
>
>
For the purposes of documentation building however, does it perhaps make
sense to fake then actual network connection?
Robby
On Sun, Mar 10, 2019 at 9:48 AM Matthew Flatt wrote:
> Use `call-with-trusted-sandbox-configuration` around the creation of
> the evaluator. It's painful and unlikely to
Is the issue simply that `begin`'s body is not an internal definition
context, but instead spliced into the containing context?
Robby
On Thu, Mar 7, 2019 at 12:01 AM Milo Turner wrote:
>
> I was discussing with a friend some of the edge cases in how internal
> definition contexts and expansion
I have been bitten by this one too, it is a bit pernicious. Perhaps we
can adjust the documentation to make more clear that `else` isn't
special in `match`?
Robby
On Mon, Feb 25, 2019 at 6:51 PM Sorawee Porncharoenwase
wrote:
>
> I usually use _ for the otherwise case because I usually match on
For the record, `for` iterators go element-by-element. For example,
this program does not construct anything that has all of the natural
numbers in it:
#lang racket
(define my-stuffs-value
(hash 'telephone 3
'bluejeans 24
'house 10
'computer 3000))
(define my-estate
This is what struct/dc is for. Let me know if the docs let you down!
Robby
On Thu, Feb 14, 2019 at 7:57 PM Chris GauthierDickey
wrote:
> I'm wondering if it's possible to have a contract for a struct that only
> allows certain kinds of initializations. For example, I have this:
>
> (provide (co
ried it out on a very simple
> language to make sure I understood it. I'm not using the lexer-contract,
> I'll give that a shot and see if I can narrow it down. Thanks for the
> advice!
> Chris
>
> On Wed, Feb 13, 2019 at 7:08 PM Robby Findler
> wrote:
>
>> Am I r
Am I right in inferring this is a lang you made and not a lang that
you'd like to report a bug about?
The symptoms you're seeing are generally bugs in the results of the
lexing function. It can be hard to get those right and the colorer
calls into your lang's reader in ways that you might not have
s racket/gui
> refactoring myself? Or is this something I should expect would happen
> without my help?
>
> Either is cool. I just wasn't sure which you were suggesting.
>
>
>
> On Mon, Feb 11, 2019 at 2:46 PM Robby Findler
> wrote:
>>
>> Probably
Probably the best thing would be to adjust racket/gui so that the
text% (and perhaps a few smaller other things) was available without
racket/gui/base having to be required. I believe that Sam did that to
make racket/draw for a reason that was probably like this one.
Robby
On Mon, Feb 11, 2019 a
[ tl;dr See the newly added struct-guard/c ]
I agree this is a problem (and a pernicious one!).
Thinking about it from the contract system design point of view, the
way serializable struct work this looks a lot like the situation where
the module author has (separately) exported the constructor w
There are some messages that get held up in the spam traps that
requires one of the admins to explicitly approve (this happens when
the post comes from someone on the list, but where they post with a
different email address, I believe).
I didn't approve these particular ones, tho, so I'm not sure
Sounds like you are already in good shape!
Robby
On Tue, Feb 5, 2019 at 12:57 AM Laurent wrote:
> On Mon, Feb 4, 2019 at 9:55 PM Robby Findler
> wrote:
>
>> > Possibly. I'm not sure what would be the best option yet, I'll think
>> about it but I welcome s
On Mon, Feb 4, 2019 at 8:34 AM Laurent wrote:
> On Sun, Feb 3, 2019 at 7:00 PM Robby Findler
> wrote:
>> On Sun, Feb 3, 2019 at 11:50 AM Laurent wrote:
>>>
>>> I've pushed a repair. It should be integrated with the next racket nightly
>>> releas
It seems like a great addition to the performance section of the guide.
Robby
On Sun, Feb 3, 2019 at 3:35 PM Matthias Felleisen
wrote:
>
> 1. I think this is a great start for a generic introduction to data
> structures. Someone should integrate Jens’s short table:
>
>
> https://stackoverflow.c
> On Fri, Feb 1, 2019 at 1:37 PM Laurent wrote:
>
>> Okay then, I'll work on a fix tomorrow.
>>
>> On Fri, Feb 1, 2019 at 1:23 PM Robby Findler
>> wrote:
>>
>>> I can't say concretely what will go wrong I am sorry to say. There are
>>
This is very nice!
Robby
On Sat, Feb 2, 2019 at 10:37 PM Alex Harsanyi
wrote:
>
> I put together some notes about available data structures in Racket, with
> some performance considerations. It needs more work, but perhaps it can be
> used as a starting point and it can be added to the Racket
On Sat, Feb 2, 2019 at 9:23 AM George Neuner wrote:
>
>
> On 2/2/2019 9:38 AM, Robby Findler wrote:
> > Lists seem like a common pitfall here, due to the overlap in
> > terminology but not functionality/performance. Maybe the right thing
> > is to add a library to da
r example.
>
> Sam
>
> On Sat, Feb 2, 2019 at 9:38 AM Robby Findler
> wrote:
> >
> > Lists seem like a common pitfall here, due to the overlap in terminology
> but not functionality/performance. Maybe the right thing is to add a
> library to data/ that is the python
Lists seem like a common pitfall here, due to the overlap in terminology
but not functionality/performance. Maybe the right thing is to add a
library to data/ that is the python list data structure and
point to it from the list documentation?
Robby
On Sat, Feb 2, 2019 at 12:28 AM Alex Harsanyi
w
gt;>>
>>> Could it be changed to also set `(print-as-expression)` appropriately?
>>>
>>> Sam
>>>
>>> On Fri, Feb 1, 2019 at 11:02 AM Robby Findler
>>> wrote:
>>> >
>>> > Ah, right! I forgot about that setting. Y
;> I'm in #lang racket for DrRacket, and I assume it's the same for the command
>> line when merely starting "$ racket"
>>
>>
>> On Fri, Feb 1, 2019 at 3:39 PM Robby Findler
>> wrote:
>>>
>>> This setting is controlled by
;
On Fri, Feb 1, 2019 at 9:48 AM Laurent wrote:
>
> I'm in #lang racket for DrRacket, and I assume it's the same for the command
> line when merely starting "$ racket"
>
>
> On Fri, Feb 1, 2019 at 3:39 PM Robby Findler
> wrote:
>>
>> Thi
This setting is controlled by the language of the original file (so
the one in the definitions window in DrRacket or the one you are
"inside" in the repl if you're in one). Possibly those are different
for you, Laurent?
Robby
On Fri, Feb 1, 2019 at 9:33 AM Sam Tobin-Hochstadt wrote:
>
> I see th
ri, Feb 1, 2019 at 11:30 AM Robby Findler
> wrote:
>
>> My feeling is that our compilation infrastructure isn't really set up to
>> work like that currently. In general things will probably be smoother if
>> there is only the expectation that a given set of files is used
could also be querried if that's better.
>
> On Thu, Jan 31, 2019, 23:02 Greg Trzeciak
>> As long as the user-scripts won't be lost (i.e. the scripts will be
>> copied over) it sounds OK.
>>
>> On Thursday, January 31, 2019 at 10:42:08 PM UTC+1, Robby Fi
Congrats!
Robby
On Thu, Jan 31, 2019 at 4:46 PM Christopher Lemmer Webber
wrote:
>
> I've mentioned that my goal has been to advance the
> federated/decentralized social web in Racket on here before. Here's
> some news:
>
>
> https://samsungnext.com/whats-next/category/podcasts/decentralizat
Probably it is best if quickscript (either silently or after asking)
copied scripts from a version-specific directory to a new
(version-specific) one, much like how the pkg system works.
Robby
On Thu, Jan 31, 2019 at 3:38 PM Greg Trzeciak wrote:
>
> I had quickscript already installed when upgra
Also I think that the size of the code generated by arrow contracts
(when keywords are involved and other situations that perhaps aren't
worth spelling out in detail in this email) is larger than we would
like, which also doesn't help.
Robby
On Wed, Jan 30, 2019 at 7:52 PM Sam Tobin-Hochstadt
wr
Thanks, Ben!
Instead of the ++style command line, consider using a property on the
`title` of the top-level section.
Robby
On Wed, Jan 30, 2019 at 10:02 AM Ben Greenman
wrote:
>
> In case you have trouble navigating the docs, here's a related example.
>
> First, a Scribble function that genera
. Silva wrote:
>
> I have already my document in latex, side by side with syncing paragraphs. I
> use the paracol package and the switchcolumn*. I was wondering if I could use
> this system with scribble as you say.
>
> quarta-feira, 30 de Janeiro de 2019 às 15:08:34 UTC, Robb
Turns out this was an incomplete contract check; the algorithm used by
`but-not/e` doesn't work if some of the elements of `small` are not in
`big`.
Thanks to Max for figuring that out. It should be fixed now.
Robby
On Sun, Jan 13, 2019 at 11:35 PM 'John Clements' via Racket Users
wrote:
>
> I’
;s not there, but I thought that was what
> you meant with the two-columns thing -- and spent 30 minutes figuring out
> where that is.
That would be nice.
Robby
> On Wed, Jan 30, 2019 at 2:44 PM Robby Findler
> wrote:
>>
>> No it does not require that, if I am understa
n't aware
> this was easily doable.
>
> Cheers,
> Marc
>
> On Tuesday, January 29, 2019 at 2:01:37 PM UTC+1, Robby Findler wrote:
>>
>> In order to do that you'd need to drop down to the latex level and use
>> a package there to help you. There is infor
In order to do that you'd need to drop down to the latex level and use
a package there to help you. There is information about how to do that
here: http://docs.racket-lang.org/scribble/config.html . Here is a
post about packages you could use:
https://tex.stackexchange.com/questions/308260/parallel
You've opened the right dialog. Now type "test-" into it. You should
see the file appear. Click on it.
Robby
On Fri, Jan 25, 2019 at 7:53 AM orenpa11 wrote:
>
> Hi,
> Sorry but I did not get it.
> should I add the path to the rkt file or add the code ?
>
> Thanks,
> Or
>
> On Friday, January 25,
The variables from the contract are bound only if they have
underscores in them (because ones without underscores are not
constrained to be the same when they appear in contract positions (or
in define-language)). I've pushed a small clarification of this in the
docs and below is a program that dem
Hi Mike! Thanks for pointing this out. I've updated the errata
(Thanks, Ben for those links; I was having trouble finding the date of
the change.)
Robby
On Sat, Jan 12, 2019 at 4:41 AM Mike MacHenry wrote:
>
> Hey everyone,
>
> I'm having an issue with one of the examples from Semantics Engineer
Technically speaking, everything is a struct, both hashes and sets.
The difference is that the function make-base-namespace shares the
module that implements the struct for the hash tables and doesn't for
sets. You can share it yourself, if you want to, tho. (See
namespace-attach-module.)
Robby
O
The true expert on this is, of course, Paul (now cc'd) but I think
that the short answer is that you cannot have two different binding
occurrences that are the same variable. That's just not how things
work. :(
In this case, I think you can probably just substitute in for the
variable, tho, in tha
Did you try using `current-traced-metafunctions` ? It is poorly named,
I know. And, even worse, I see that the docs don't actually say that
it traces judgment forms too.
Robby
On Wed, Jan 2, 2019 at 9:18 PM Joey Eremondi wrote:
>
> I'm wondering, is there a way to show some sort of trace for a c
They are inspired by CML which is inspired by other things. You might
want to read
http://www.cs.utah.edu/plt/kill-safe/
and then follow references for the history of the development of the
ideas that went into this particular corner of Racket.
Robby
On Tue, Dec 4, 2018 at 4:54 PM Anthony Qui
What about using the function
(lambda (x) (and x #true))
And putting a short discussion of truthy and a link to elsewhere in the
docs?
Robby
On Thu, Nov 29, 2018 at 11:17 PM Philip McGrath
wrote:
> I can do it.
>
> -Philip
>
>
> On Thu, Nov 29, 2018 at 5:17 PM John Clements
> wrote:
>
>> I l
Also "don't know yet".
Robby
On Wed, Nov 28, 2018 at 6:15 PM Alexis King wrote:
> > On Nov 28, 2018, at 07:15, Matthew Flatt wrote:
> >
> > Yes, that's special handling for pairs in the sense that the
> > traditional Racket implementation takes advantage of leftover bits in a
> > pair object,
I completely agree with Matthias in the sense that you should get a design
that focuses on clarity before worrying about performance, but just in
general terms, looking up a parameter's value is roughly proportional to
the number of parameterize uses you are inside. Not other context
information (l
Maybe you can call this function:
http://docs.racket-lang.org/framework/Text.html?q=get-completions%2Fmanuals#%28def._%28%28lib._framework%2Fmain..rkt%29._text~3aget-completions%2Fmanuals%29%29
from the top-level of your keybindings file?
Robby
On Mon, Nov 5, 2018 at 3:11 AM Glenn Hoetker wrot
DrRacket disallows network and filesystem access during its online
expansion. Partly for security reasons and partly because it seems unlikely
that the code one writes that does that would be kill safe. You might be
able to bike the abstractions you news via the FFI but I guess it will be
hard to g
If I am understanding this right, data/enumerate's list/e combinator doing
a similar job. It might also be helpful.
Robby
On Sun, Oct 21, 2018 at 5:50 PM Jay McCarthy wrote:
> I think the best strategy would be to convert the generator to a
> sequence and then the sequence to a stream, then wri
I like the idea that you suggested where the parens keep their paren
color but the rest of the text becomes comment colored. It's not a
trivial change, but it seems doable.
Robby
On Mon, Oct 8, 2018 at 12:37 PM Christopher Lemmer Webber
wrote:
>
> It sounds nice, but I wonder if it would be hard
The racket documentation is organized into two documents. One that is
intended to be the useful, commonly-used bits (called the guide) and
one is intended to be comprehensive, showing every possibly knob and
button (called the reference). If you don't know about that, it can be
easy to flip into th
Perhaps object-contract?
Note that this might not return a contract, however, in which case,
the function might return anything.
Robby
On Fri, Aug 24, 2018 at 7:50 AM Joao Pedro Abreu De Souza
wrote:
>
> Hi. I am contributing in a library that create functions to parse PEG(parsing
> expression
That probably would have been better but we opted to reuse the definition
of the define macro. Too clever by half (maybe).
Robby
On Thu, Aug 16, 2018 at 1:40 PM 'Paulo Matos' via Racket Users <
racket-users@googlegroups.com> wrote:
>
>
> On 16/08/18 19:42, Robby Fin
Yes, this looks like a bug. I see something went wrong between
versions 6.6 and 6.7.
As for `define` vs `define/private`, they are not the same. In the
`define` case, storage is allocated in the object (since it is a
field, bound to a procedure) and in the `define/private` case, it
isn't (since it
I'm not seeing that in a build from yesterday, so it may be an already
fixed bug. Judging from the error message, you can probably work
around the problem by disabling the debugging annotations (Language |
Choose Language ... -> Show Details -> "No debugging or profiling"
radio button).
Robby
On
The primary way to customize metafunction rendering is through
`with-atomic-rewriters` and `with-compound-rewriters`. Depending on exactly
what you have in mind, you can get close to what you suggest, I suppose.
Robby
On Sat, Jul 21, 2018 at 4:30 AM, Stephen Foster
wrote:
> I see metafunction-
I agree! Thank you for offering.
One thought, tho: we probably don't want to duplicate information (as
it will probably get out of sync).
Robby
On Sun, May 27, 2018 at 5:46 PM, Sam Tobin-Hochstadt
wrote:
> Yes, PRs for this sort of thing would definitely be welcome.
>
> Sam
>
> On Sun, May 27,
It may be easier to use the higher-level library, calling
preferences:set-default and preferences:set. Using that approach has
the advantage you don't need to know all of the prefs (that are
machine config and OS specific, generally), but it has the
disadvantage that you need to figure out what the
That is a very good school! You must be quite smart to be able to go there.
What is your name?
Robby
On Mon, May 21, 2018 at 6:49 AM רונן סדובניק
wrote:
> I am in Leobaeck school, and I would like to have it in pretty big
> language but other languages will be good aswell.:)
>
>
--
You rec
These games are different at different universities. Which university do
you attend?
Robby
On Mon, May 21, 2018 at 6:28 AM wrote:
> Hey I need a code of memory game in Drracket in any language. I'll pay you
> for this:D.
>
> --
> You received this message because you are subscribed to the Googl
I ran the program below and it produced a .ps file that I opened with
preview and I see the attached, which seems to have the arrows in it.
Are you doing something differently?
Robby
On Sat, Apr 28, 2018 at 9:17 PM, Shu-Hung You
wrote:
> Hello everyone,
>
> I try to save the traces generated by
On a Mac, it is control-\. On other platforms it is something else. Check
in edit|show active keybindings. Search for "Tex".
Robby
On Wed, Apr 18, 2018 at 3:19 PM wrote:
> Hey Philip, thanks.
>
> I don't get it yet, I type " \theta " and then when I type " Ctrl + \ " I
> get a Lamba symbol: " λ
I've pushed an edit to the docs that attempts to address this point.
https://github.com/racket/htdp/commit/86900c00e770f1336dafce331c206240495a9953
Robby
On Sat, Mar 24, 2018 at 3:44 PM, Stephen Smith
wrote:
> Hi Everyone,
>
> When running the following example from the Racket docs section tit
Any string is considered an image-color, but if it is not a color
that's known, it is turned into black.
Is that the question?
If so, I will update the documentation to clarify.
Note that the list of colors is behind the link on "color-database<%>".
Robby
On Tue, Mar 27, 2018 at 9:41 AM, 若草春男
Fantastic! Thanks for letting us know.
Robby
On Sat, Mar 17, 2018 at 8:43 PM, Christopher Lemmer Webber
wrote:
> Hello everyone! So Morgan and I ran a workshop together (though the
> workshop was much more so Morgan's work than mine) on teaching
> Racket/Scribble to non-programmer-academics, p
If you want to stay inside redex-land, you have to do something like the
code below, where you use typesetting to turn uses of length-ok (in other
relations) into something like "#(l) = k".
hth,
Robby
#lang racket
(require redex)
(define-term k 3)
(define-language L)
(define-judgment-form L
Stepping back a little bit here, if you were to write this down in a
way that were to make sense to a reader of a paper, how would you
communicate with them how/when this parameter changes?
I think we've already agreed that one can think of the entire paper
and its development having exactly one c
I guess most people already know this much, but one of the main ideas
of the design of Redex is to support the notations that people
actually use in their papers requiring only a minimal bit of
information extra that lets us be able to actually run them.
So, from this perspective, you're pointing
rprisingly (find-relevant-directories
> 'framework:color-schemes 'all-available) evaluates to '().
>
> Anyway, the only info.rkt that seems to define that symbol is drracket, so
> I'll see what happens if I make sure to setup drracket before racket-doc.
>
> --
>
That error message comes from this code:
https://github.com/racket/drracket/blob/master/drracket/scribblings/drracket/interface-essentials.scrbl#L786-L826
I'm not sure what is going wrong there, but if you have a running
DrRacket elsewhere, you should be able to evaluate that code and put
some pr
Oh, yes: I agree with *very cool*!
Robby
On Sun, Mar 11, 2018 at 3:58 PM, Matthias Felleisen
wrote:
>
> On Mar 11, 2018, at 4:33 PM, 'Paulo Matos' via Racket Users
> wrote:
>
> Hi,
>
> I found the style guide a really great idea and generally very useful
> (although it's a shame the lack of con
At least for those three, DrRacket does the 102 thing for you and git
does the line/file ending thing.
Robby
On Sun, Mar 11, 2018 at 3:33 PM, 'Paulo Matos' via Racket Users
wrote:
> Hi,
>
> I found the style guide a really great idea and generally very useful
> (although it's a shame the lack
I've pushed a change that tries to improve that text.
Robby
On Fri, Mar 2, 2018 at 1:21 PM, Matthias Felleisen
wrote:
>
>> On Mar 2, 2018, at 1:30 PM, A Mauer-Oats wrote:
>>
>> The Racket Guide (7.2.2 Using define/contract and ->) says, "contract will
>> always be checked on calls to deposit.”
I've pushed some edits to that guide section (and noted place channels
as evt?s). Hopefully those code examples there are useful to someone!
Robby
On Thu, Feb 22, 2018 at 5:11 PM, Philip McGrath
wrote:
> I've found the paper "Kill-Safe Synchronization Abstractions"
> (https://www.cs.utah.edu/plt
These are great points! Thank you.
Robby
On Thu, Feb 22, 2018 at 1:59 AM 'Paulo Matos' via Racket Users <
racket-users@googlegroups.com> wrote:
>
>
> On 22/02/18 01:02, Robby Findler wrote:
> > You can create a thread and wait simultaneously on the place cha
If you need the size before it is shown, you can use reflow-container.
Robby
On Thu, Feb 22, 2018 at 6:22 AM David Alkire wrote:
> Thanks. It was the tricky bit that tricked me. I was trying to get the
> size of the panel before it was painted. I guess I should default to the
> mins and update
You can create a thread and wait simultaneously on the place channel
value and also on some channel that the various workers use to check
in and see if a value is available. Here's a very simple instantiation
of this idea.
More generally, I think that one of the underappreciated parts of
Racket's
Glad you found something that works!
For the record, being in a pkg and being an app are not mutually exclusive.
DrRacket, for example, enjoys both statuses.
Robby
On Sun, Feb 18, 2018 at 5:41 PM Alex Harsanyi
wrote:
>
> Hi Robby,
>
> On Sunday, February 18, 2018 at 10:33:09 AM
FWIW, the approach that is less friendly to your clients but perhaps
easier for you (and maybe good enough for them) is to declare a
dependency on a specific version in the info.rkt file of your pkg. The
pkg system will ensure that the latest version is used.
Robby
On Sat, Feb 17, 2018 at 8:31 P
Sorry for the delay in looking into this. I've pushed a fix. FWIW,
opt/c definitely needs a lot of love before I would recommend using it
seriously. I think it is a good idea and the approach in the
implementation is certainly reasons, but it can certainly use a tune
up.
Robby
On Sun, Dec 24, 2
One can certainly debate the merits of the names, and perhaps that's
worth doing, but I'll refrain from it myself, except to point out that
Racket inherited the names "write" and "display" from Scheme, and
"print" is a name that we added.
Here is how to think about these functions:
"write" is a f
I'm not sure what the right answer is here, but in some specific cases
that have happened to me along these lines, I've found that specifying
'italic or 'bold works out.
Sorry that's not much to go on.
Robby
On Thu, Feb 15, 2018 at 2:44 PM, Joel Dueck wrote:
> Greetings, long time lurker/first
If you run this code, does the profiling information reveal anything
interesting?
#lang racket/gui
(require profile)
(define ec%
(class editor-canvas%
(define/override (on-paint)
(profile (super on-paint)))
(define/override (on-char e)
(profile (super on-char e)))
(super-
On Sat, Feb 3, 2018 at 1:08 AM, Alex Harsanyi wrote:
> I also did a write-up of the features, as well as some screenshots to
> illustrate what can be done with the new functionality. You can find that
> here:
> https://alex-hhh.github.io/2018/02/interactive-overlays-with-the-racket-plot-package.h
FWIW, programming with evts is lots of fun. When I first encountered
it, it blew me away the kinds of things that went from very hard to
easy and enjoyable to program up.
Robby
On Thu, Feb 1, 2018 at 9:14 AM, Alexander McLin wrote:
> Thanks all for your inputs.
>
> I tried `with-intercepted-log
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