Re: [racket-users] Language-Specific Plugins: Toolbar button functionality to call drracket:eval:expand-program

The functionality you describe—in particular, setting up clean evaluation contexts—sounds a lot like what the "Run" button already does. Unless you have some other notion of "running" in mind for programs in your DSL, I think what you describe could be accomplished nicely with a "main" submodule,

Re: [racket-users] web-server: how to save database results in memory across all requests?

The relevant chapter of the reference is "Concurrency and Parallelism" ( https://docs.racket-lang.org/reference/threads.html): > All constant-time procedures and operations provided by Racket are > thread-safe because they are atomic. For example, set! >

Re: [racket-users] Re: [standard-fish] Summer competiton 2019

This contest is a bright idea, so here's a standard lightbulb: [image: default-lightbulb.png] The code is at https://gist.github.com/LiberalArtist/4d0059f5af23043515a3cc74bd4928c2 -Philip On Wed, Aug 14, 2019 at 10:05 PM Stephen De Gabrielle < spdegabrie...@gmail.com> wrote: > Amazing face!

Re: [racket-users] [racket users] make-keyword-procedure follow-up

Hi Kevin, This is interesting! A number of people have wanted conveniences around `keyword-apply` and accepting the same keywords as some other function. (The trouble is, different people have different ideas of what those conveniences should be.) To start with, I had a few small suggestions

Re: [racket-users] Re: Is it possible to sell commercial use rights to an open source Racket package?

One issue you would encounter is that deciding what is a "commercial" use can be difficult. This comes up with Creative Commons licenses ( https://creativecommons.org/faq/#does-my-use-violate-the-noncommercial-clause-of-the-licenses ): > … there will always be uses that are challenging to

Re: [racket-users] [racket ursers] Keyword question

If they do what you want, `curry` and `curryr` support keyword arguments (as of Racket 7.1) and handle lots of cases. If you do need to use `make-keyword-procedure`, you may want to combine it with `procedure-reduce-keyword-arity-mask`. -Philip On Fri, Aug 23, 2019 at 10:03 PM David Storrs

Re: [racket-users] Simple macro issues

On Mon, Sep 9, 2019 at 2:42 AM Simon Haines wrote: > I'm still trying to figure out why my original, terrible macro behaved the > way it did, but I suspect I'll never know. I would have wasted a lot of > time on that awful construct. I appreciate your help, many thanks. > A great way to

Re: [racket-users] Simple macro issues

On Mon, Sep 9, 2019 at 8:17 PM Simon Haines wrote: > What wasted a lot of time for me is that, despite the macroexpander's > results, the macro works as expected in the REPL. If you paste my original > macro into DrRacket, run it, then type '(hex a)' into the REPL you get the > expected result.

Re: [racket-users] Simple macro issues

`On Tue, Sep 10, 2019 at 1:19 AM Simon Haines < simon.hai...@con-amalgamate.net> wrote: > This is a rather unpleasant pitfall of the REPL. If you try to evaluate >> the expression `(if #f some-unbound-identifier 1)`, you will see that it >> evaluates to `#f` in the REPL but raises an unbound

Re: [racket-users] Downloadable tutorials (e.g. on github)? Tutorial example source codes samples attached to DrRacket instalation?

On Tue, Sep 10, 2019 at 1:31 AM Prokop Hapala wrote: > "File > Open Require Path …" ... "/usr/share/racket/pkgs/games/" > > it is strange ... on one computer (at work) it works, on other (at home) > it does not want to open that directory (the dialog is a bit too > minimalistic so I don't know

Re: [racket-users] Downloadable tutorials (e.g. on github)? Tutorial example source codes samples attached to DrRacket instalation?

For pedagogical examples, you may like the games that go along with the "Realm of Racket" book, which are also in the main Racket distribution. For example, try "Open Require Path …" for `realm/chapter2/source`, or here is the whole collection on GitHub: https://github.com/racket/realm On Mon,

Re: [racket-users] Distributing raco command without `raco`

In your "info.rkt", define `racket-launcher-names` and `racket-launcher-libraries`, or `gracket-launcher-names` and `gracket-launcher-libraries` for a GUI app: https://docs.racket-lang.org/raco/setup-info.html#(idx._(gentag._14._(lib._scribblings%2Fraco%2Fraco..scrbl))) Note that this is handled

Re: [racket-users] Why custom-display of printable<%> interface is called twice?

Someone had a very similar question about `printable<%>`, including both the confusion about multiple calls and the bug of failing to use the `out` port, on Stack Overflow recently: https://stackoverflow.com/questions/55975708/racket-equivalents-of-pythons-repr-and-str/56759937#56759937 Since

Re: [racket-users] Re: Racket2 possibilities

I thought one of the most compelling parts of Matthew's proposal was at around 37:41 in the video , when he said, I've seen students in my class genuinely struggle with just the syntax. I think it would be very useful to hear more (from Matthew

Re: [racket-users] Building "#lang dungeon"

I wonder if the unit system, or something like it, could be a basis for implementing this, especially the aspect of avoiding too much explicit argument passing. Signatures can define bundles of identifiers, like file IO primitives. This lets you avoid having to know which specific primitives are

Re: [racket-users] Message in the meantime?

On Wed, Jul 24, 2019 at 4:16 PM Matthew Butterick wrote: > Support for alternative notation in the documentation system is a missing > piece in Racket's LOP tooling: > > … primary forms like `defproc` assume that the language uses > S-expressions. > > Examples: `#lang datalog` [1] and `#lang

Re: [racket-users] syntax-parse ellipsis question

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 ...+

Re: [racket-users] syntax-parse and iterecursion

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

Re: [racket-users] gen:equal+hash on hashes or other non-struct data structure

On Tue, Oct 1, 2019 at 10:21 PM David Storrs wrote: > For example, there's a hash, hasheqv, and hasheq. Is there a way to > have a hash with a user-provided key-comparison function? > You probably want `define-custom-hash-types` and the related functions:

Re: [racket-users] What's the best way to do these syntax transforms?

On Fri, Nov 8, 2019 at 9:56 AM Jay McCarthy wrote: > On Fri, Nov 8, 2019 at 9:51 AM Christopher Lemmer Webber < > cweb...@dustycloud.org> wrote: > >> I have a need to do two things in a #lang: >> >> - Most importantly, make all strings that appear in the source code >>immutable >> > > Make

Re: [racket-users] What's the best way to do these syntax transforms?

On Fri, Nov 8, 2019 at 2:58 PM Matthew Flatt wrote: > More precisely, the reader (via `read-syntax`) creates immutable > strings. > > If a macro constructs a mutable string and converts it to a syntax > object, the string is not converted to an immutable string. Maybe it > should be. > I see

Re: [racket-users] What's the best way to do these syntax transforms?

On Fri, Nov 8, 2019 at 5:06 PM Christopher Lemmer Webber < cweb...@dustycloud.org> wrote: > Huh... somehow I had thought that I had heard that Racket has mutable > strings by default. It cropped up on my TODO list because of that. I > wonder what gave me that impression? > Racket strings are

Re: [racket-users] xml library clarification - "" symbol parsing

On Fri, Nov 22, 2019 at 8:50 AM Neil Van Dyke wrote: > That hypothetical parser assembling the parsed representation *could* > then concatenate sequences of 2 or more contiguous strings representing > CDATA, but that could be expensive, and might not be needed. Consider > how large some XML and

Re: [racket-users] eq? of quoted expressions

On Fri, Oct 25, 2019 at 1:27 PM wanderley.guimar...@gmail.com < wanderley.guimar...@gmail.com> wrote: > On Fri, Oct 25, 2019 at 9:28 AM Alexis King wrote: > >> Unlike eq? on symbols, eq?’s behavior on quoted lists is unspecified … >> Is there a reason you would like the answer to be #t? > > Not

Re: [racket-users] Re: Structured Concurrency in Racket

On Wed, Oct 9, 2019 at 2:09 PM Zelphir Kaltstahl wrote: > I was wrongly under the impression, that serializable-lambda are supposed > to work out of the box, when sending them over channels, without needing to > do any further work ("are serialized automatically" instead of "can be >

Re: [racket-users] How do I typeset mixed-code for docs.racket-lang.org?

The way I would approach this would probably be to: 1. Create a #lang that accepts your source Markdown+Racket syntax. 2. Add a color lexer as you would for DrRacket, probably using ` syntax-color/racket-lexer

Re: [racket-users] Re: Structured Concurrency in Racket

On Thu, Oct 10, 2019 at 2:42 AM Zelphir Kaltstahl < zelphirkaltst...@gmail.com> wrote: > … If that works for arbitrary serializable-lambda with only serializable > parts, I could continue my process pool project. > Yes, this would work for any value created by `serial-lambda`. > The only issue

Re: [racket-users] Change error message of web server continuations from "Sorry, this page has expired. Please go back."

You can probably use `make-threshold-LRU-manager ` with a much higher memory threshold than the default from `serve/servlet`, which is about

Re: [racket-users] Can I somehow connect to and update values in a specific hash table used by a running web server?

The other advice here is good and could help to implement a more principled solution. But, if you want to do something equivalent to editing a running application's database on the fly, just using Racket values instead of a DB, I would build on `file-box`:

Re: [racket-users] Types for formlets

Hi Marc, You're right that there will be some challenges in using formlets in Typed Racket. The easiest approach will probably be to keep defining formlets in untyped modules and importing them with `require/typed`, perhaps with helper functions or macros to eliminate some of the boilerplate.

Re: [racket-users] Web server + authentication

I configure Postfix to send external mail via Amazon's "Simple Email Service," then use `net/sendmail`. Having a working mail-transfer agent means you can easily send yourself mail from other tools on the system, too, like a cron job to renew the TLS certificates. (I haven't looked at Postmark, so

Re: [racket-users] [racket users] Macro literal "|"

You're right that `|` isn't a valid terminal with the normal reader, but, as it happens, the zero-length identifier can be written as `||`. (I don't think the concept of a zero-length identifier is common in other languages: it corresponds to the empty string.) -Philip On Mon, Feb 3, 2020 at

Re: [racket-users] How to convert String to Integer

Others have tried to be more Socratic in pointing you this way, but here's an attempt at being more explicit. As you note, the result of `string->number` has the type `(U Complex False)`. If we try to think about about this in a version of the HtDP design recipe, we have a few cases: 1.

Re: [racket-users] Re: How to convert String to Integer

On Tue, Feb 11, 2020 at 3:28 PM Alain De Vos wrote: > But first i need a list of characters. :) > Does the language has a conversion operator ? > Yes, `string->list`: https://docs.racket-lang.org/reference/strings.html#(def._((quote._~23~25kernel)._string-~3elist)) But read on … On Tue, Feb

Re: [racket-users] cast on mutable hash table...

On Sat, Feb 15, 2020 at 1:23 PM 'John Clements' via users-redirect < us...@plt-scheme.org> wrote: > Yes, absolutely. One reason that students in my class wind up using cast > quite frequently in their parsers is that they use patterns like (list (? > symbol s) …) which (as I recall) expand into

Re: [racket-users] Starting syntax highlighter project

You don't need a `#lang` to use `color:text<%>`: I've used it to do basic syntax highlighting for XML. In fact, you don't even need a GUI for the relevant part of the protocol, which is what `#lang`s implement. The requirements are described in the documentation

Re: [racket-users] Examples of sending HTML email w/ Racket?

I put up an example taken from my code for Digital Ricoeur in response to an old mailing list thread . It is not ready for general-purpose use—in particular, I basically only have to deal with trusted input—but here it is:

Re: [racket-users] multiple-value version of in-value

My package `adjutor` has a few variants of this, like `in-value*`: https://docs.racket-lang.org/adjutor/Stable.html#(part._.Sequence_.Constructors) They can all be used as first-class procedures, but that does involve a little runtime overhead, so they use `define-sequence-syntax` to cooperate

Re: [racket-users] multiple-value version of in-value

Glad it was useful! There is a variant `in-value*/expression` that works like your `in-values`: https://docs.racket-lang.org/adjutor/Stable.html#(form._((lib._adjutor%2Fmain..rkt)._in-value*%2Fexpression)) -Philip On Mon, May 4, 2020 at 10:12 PM Jos Koot wrote: > To Philip McGrath, Hi ag

Re: [racket-users] Matching groups of optional elements

Depending on your requirements, I would consider using `syntax-parse` at runtime: this is easily written with its `~seq` patterns, and you get nicer error reporting. Here's an example—I use syntax classes for clarity, but they aren't necessary, if you prefer to be more concise: #lang racket

Re: [racket-users] Do I misunderstand set! ?

I think you are running into the (very confusing!) issue Ben describes here: https://groups.google.com/d/msg/racket-users/UD20HadJ9Ec/mDd4x8Y1BwAJ -Philip On Thu, Apr 23, 2020 at 5:00 PM Hendrik Boom wrote: > extract from code: > > (fprintf anomaly "resEEEulttyope was ~s~n"

Re: [racket-users] trickiness about the order of definitions in GUI code

On Wed, May 6, 2020 at 8:49 PM Jon Zeppieri wrote: > It's a bit trickier to define these things in separate files, because > their definitions refer to each other (though indirectly in this > case), and the module system does not tolerate cyclic dependencies. > The most straightforward way to

Re: [racket-users] Scribble citations for art history dissertation (AJA style)

On Thu, Mar 19, 2020 at 12:40 PM Matthew Flatt wrote: > At Thu, 19 Mar 2020 12:38:39 -0400, Christopher Lemmer Webber wrote: > > I will spend the rest of the day looking at what scriblib's bibliography > > stuff does in further detail and think about how to accomplish what we > > need. It could

Re: [racket-users] Re: Is it possible to make submodules with private names?

On Sat, May 23, 2020 at 5:04 PM Simon Schlee wrote: > I also would find it interesting to have something functor like, in the > sense of being able to create parameterized module instances. > My guess is that constructs like that are difficult to optimize and the > separation between runtime and

Re: [racket-users] locally linked package name doesn't match info collection name

There was a `pkg-name` info.rkt item added in 20672cd , but it only seems to be used by `make-dirs-catalog`

Re: [racket-users] Why is struct/contract so much faster than a guard?

On Wed, Sep 2, 2020 at 3:41 PM Christopher Lemmer Webber < cweb...@dustycloud.org> wrote: > Unfortunately I can't use #:methods with struct/contract so I'm stuck > with the slow one if I want a contract on the struct? > For another option (though you may already know this), I'd advocate for

Re: [racket-users] abstraction suggestion?

tty clever! A bit painful, but clever! > > On Mon, Aug 31, 2020 at 1:32 PM Philip McGrath > wrote: > >> There might be a better way, but I'd probably make a language for writing >> this kind of module, in the spirit of `#lang syntax/module-reader`, where >> its `#%module-be

Re: [racket-users] abstraction suggestion?

There might be a better way, but I'd probably make a language for writing this kind of module, in the spirit of `#lang syntax/module-reader`, where its `#%module-begin` would expect the module body to be ``, similar to the way that the body of `(module reader syntax/module-reader

Re: [racket-users] package manager woes on Windows 10?

Also, this is happening over encrypted HTTPS: no one is sniffing the User-Agent header. My initial attempt to reproduce in the GUI package manager was foiled because I’d first tried installing at the command line, and the package manager used a cached copy of the repository. From Shriram’s update

Re: [racket-users] Hygiene for a curried macro

Hi Nia, Here's a variant that passes your test: #lang racket (require rackunit syntax/parse/define) (define-syntax let-second-and-create-let-third (syntax-parser [(_ var let-third body-of-let-second) #'(let ([var "second"]) (let-syntax ([let-third

Re: [racket-users] Hygiene for a curried macro

Shot 2020-09-30 at 3.47.40 AM.png] -Philip On Wed, Sep 30, 2020 at 3:40 AM Philip McGrath wrote: > Hi Nia, > > Here's a variant that passes your test: > > #lang racket > > (require rackunit > syntax/parse/define) > > (define-syntax let-second-and-create-let-thir

Re: [racket-users] Why are these @defthing blocks typeset incorrectly?

I have encountered this problem. I don't have a real solution, but maybe my hacky solution will be good enough. On Wed, Sep 23, 2020 at 7:37 PM Sorawee Porncharoenwase < sorawee.pw...@gmail.com> wrote: > I think Scribble uses source location equipped with syntax objects to > figure out spacing.

Re: [racket-users] syntax woe with typed Racket 'let'

On Mon, Jun 1, 2020 at 3:48 PM Sam Tobin-Hochstadt wrote: > (define (f [x : Number] . [y : String *]) : Number (+ x (length y))) > Another way to write this, which I often prefer, is: > (: f (-> Number String * Number)) > (define (f x . y) > (+ x (length y))) > -- You received this

Re: [racket-users] Help implementing an early return macro

The most similar example that comes to mind is the way `for`-like forms handle the `body-or-break` nonterminal to support `#:break` and `#:final`. In particular, I think you would end up needing something analogous to these semantics for definitions

Re: [racket-users] Advice wanted about new opengl binding

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: >

Re: [racket-users] pictures in code?

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

Re: [racket-users] Are Regular Expression classes Unicode aware?

On Thu, Jul 9, 2020 at 10:32 AM Sorawee Porncharoenwase < sorawee.pw...@gmail.com> wrote: > Racket REPL doesn’t handle unicode well. If you try (regexp-match? > #px"^[a-zA-Z]+$" "héllo") in DrRacket, or write it as a program in a file > and run it, you will find that it does evaluate to #f. > See

Re: [racket-users] Re: Andy Wingo's fold

On Sun, Jun 14, 2020 at 2:20 PM Catonano wrote: > I'm referring to a paper titled: "A better XML parser through functional > programming" > > by Oleg Kiselyov > Ah, I see. I'm not deeply familiar with it myself (I mostly use Racket's `xml` library), but there is a Racket port of Oleg's SSAX,

Re: [racket-users] Re: Andy Wingo's fold

On Fri, Jun 12, 2020 at 2:46 AM Catonano wrote: > the original paper Andy Wingo refers to uses Haskell to express this > operator and I can't read Haskell and I'm not willing to learn > I'm confused about what you mean: in the version of "Applications of Fold to XML Transformation", on Andy

Re: [racket-users] Working out which directory the current code was loaded from?

For this particular purpose, you want `define-runtime-path`: https://docs.racket-lang.org/reference/Filesystem.html#%28part._runtime-path%29 -Philip On Mon, Jul 27, 2020 at 9:38 PM Peter W A Wood wrote: > I have a short racket program/script that reads a file from the directory > in which it

Re: [racket-users] lsp server

On Fri, Jul 31, 2020 at 2:46 PM Catonano wrote: > I'm playing with a toy project in #Racket > > I'd like to use the lsp server… > how do I connect to it from my Emacs based client ? > Just in case by "use the lsp server" you meant "set up Emacs to work on a

Re: [racket-users] DrRacket caret blink

On Sat, Nov 28, 2020 at 3:10 PM 'Mark' via Racket Users < racket-users@googlegroups.com> wrote: > (But it is still a pity that there's no config option to turn off blinking > in DrRacket.) > I agree that this would be a valuable feature to add, not just to DrRacket but to `racket/gui` in

Re: [racket-users] DrRacket caret blink

:49:39 PM UTC-5 Philip McGrath wrote: > On Sat, Nov 28, 2020 at 3:10 PM 'Mark' via Racket Users < > racket...@googlegroups.com> wrote: > >> (But it is still a pity that there's no config option to turn off >> blinking in DrRacket.) >> > > I agree that

Re: [racket-users] Unsafe structs

On Mon, Dec 21, 2020 at 7:30 PM Robby Findler wrote: > Is Typed Racket able to prove that your use of unsafe accessors is > actually safe? > On a similar note, my understanding is that, even without types, in a program like this: #lang racket (struct cell (val)) (λ (x) (if (cell? x)

Re: [racket-users] Namespaces and modules

I think you’ll need `define-runtime-module-path` or `define-runtime-module-path-index` to alert the executable builder to the dynamic dependency. On Sun, Nov 15, 2020 at 3:38 AM Dominik Pantůček < dominik.pantu...@trustica.cz> wrote: > > > > > Using ''sandbox as an argument to

Re: [racket-users] Contracts for (partially) specifying dictionary key -> value-predicates

I've wanted this several times (and written more than one ad-hoc partial version): a general-purpose combinator would be great! On Fri, Oct 30, 2020 at 1:14 PM William J. Bowman wrote: > > 1. make these functions, not macros > The main implementation is a procedure, but I think I need a macro

[racket-users] Should minimal Racket include "base"?

There seems to be an inconsistency about whether "minimal Racket" includes the "base" package. The downloads for Mac OS and Windows seem to include it, but both the Linux downloads and the source tarballs have only "racket-lib". I know that Mac OS, Windows, and "natipkg" use the "racket-lib"

Re: [racket-users] Can a new user defined pkg encompass nothing more than references to previously defined pkgs?

On Mon, Jun 7, 2021 at 1:46 PM Don Green wrote: > Following from Philip's 3rd point, which I think is very relevant, I > surmise that I really should: > 1) build libraries ;that reference my code (These libraries are built > within a user-defined package.) > This seems right, though I would say

Re: [racket-users] Sharing scope in setup/cleanup for dynamic-wind?

On Tue, May 18, 2021 at 3:52 PM Sam Tobin-Hochstadt wrote: > I think the key question is what you want to happen if you would need > to re-run the "pre" thunk, because you re-enter the code via a > continuation. > > In many cases, you don't want to support that at all … > Then you can use

Re: [racket-users] Injecting local contracts for prefab constructors

Here's another minimally-tested sample implementation. A more robust solution might try to chaperone the struct type, as well, to protect reflective access to the constructor—but I wonder if that really makes sense when you are working with prefab structs. If you can explain more about your

Re: [racket-users] Packages not being listed after reinstalling

Hi! I have been working on Guix's packaging of Racket, though I'm not especially experienced with Guix. The ssl-connect issue sounds like it may be related to §2.6 "Application Setup" in the Guix manual, especially the subsections about "X.509 Certificates" and perhaps the "Name Service Switch":

Re: [racket-users] Cross-VM method for sending any input port to C runtime?

On Sun, May 23, 2021 at 7:57 PM Matthew Flatt wrote: > At Sun, 23 May 2021 14:57:42 +, Sage Gerard wrote: > > Is there a cross-VM way to pass an arbitrary input port to the C > > runtime (e.g. via open-input-bytes), such that the C runtime can read > > bytes on its own? > > No, not unless

Re: [racket-users] Can a new user defined pkg encompass nothing more than references to previously defined pkgs?

On Sun, Jun 6, 2021 at 7:59 PM Ben Greenman wrote: > On 6/6/21, Don Green wrote: > > > > Can a new user defined pkg encompass nothing more than references to > > previously defined pkgs so that every user created module references a > > single user defined pkg? > > Yes. You can make a new

Re: [racket-users] Could Racket be used as a "frontend" for a non-Racket language?

I haven't done much with this personally, but a few pointers in Racket: - Urlang uses Racket's macro system as a front-end for JavaScript (in the way you discuss with C#, not compiling Racket to JavaScript): https://github.com/soegaard/urlang - Alexis King's Hackett is an experimental

Re: [racket-users] bytevector-uncompress: internal error uncompressing

I've submitted a patch at https://issues.guix.gnu.org/47180 that I hope will resolve this issue. -Philip -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to

Re: [racket-users] bytevector-uncompress: internal error uncompressing

Jack, thanks for the pointer: I hadn't noticed this earlier. On 3/15/21 12:49 AM, Jack Hill wrote: ``` $bytevector-uncompress: internal error uncompressing

Re: [racket-users] bytevector-uncompress: internal error uncompressing

I can reproduce the error with just: ``` $ racket -l mred/private/wx/gtk/utils $bytevector-uncompress: internal error uncompressing

Re: [racket-users] bytevector-uncompress: internal error uncompressing

Aha! Running: guix environment --ad-hoc --no-grafts racket -- drracket launches DrRacket just fine. My guess is that Racket CS is compressing string literals in compiled code. Currently, Guix patches Racket source files to include the absolute paths to foreign libraries in the store as

Re: [racket-users] Version metadata on Racket packages

Hi Jeff, In fact there are two concepts here, and part of what I think confused you is something I just discovered this week and plan to report as a bug: https://pkgs.racket-lang.org/pkgs-all does not include the package's version: that's what's discussed on the Package Concepts

Re: [racket-users] Is it safe to `read` untrusted input?

If you don't need the on-the-wire form to be human-readable, you should look at `racket/fasl`: https://docs.racket-lang.org/reference/fasl.html It can handle all of the acyclic data that `read` and `write` can (plus a little extra), it *doesn't* have `read`'s many configuration parameters that

Re: [racket-users] Re: Executable file size and raco demod

On Tue, Apr 6, 2021 at 7:54 PM Matthew Flatt wrote: > In the cross-compilation path that the release builds use, there was an > unintended layer of compression. (I noticed the size difference before, > but had not yet investigated.) Checking that again, if the extra layer > is used, the 10% or

Re: [racket-users] Is this a good uninstall then install Racket plan...

On Tue, Apr 13, 2021 at 10:31 PM John Clements wrote: > What if he has directories that aren’t part of an installed package? That > was my concern, and why I suggested manually deleting compiled subdirs. > That's right, but given: On Tue, Apr 13, 2021 at 8:16 PM Don Green wrote: > Welcome to

Re: [racket-users] Is this a good uninstall then install Racket plan...

On Tue, Apr 13, 2021 at 8:21 PM 'John Clements' via Racket Users < racket-users@googlegroups.com> wrote: > It sounds to me like the solution might be much much simpler than > re-installing an earlier version of racket. Here’s what I recommend. > > 1) Delete all of the “compiled” subdirectories in

Re: [racket-users] Having trouble getting documentation to generate

On Tue, Sep 28, 2021 at 3:30 PM Ben Greenman wrote: > On 9/28/21, David Storrs wrote: > > $ raco pkg remove try-catch > > raco pkg remove: invalid `deps' specification > > specification: '("base" racket/format racket/string) > > > > That is not the deps specification from the info.rkt file so

Re: [racket-users] Racket Discourse

I've long been in the basically-content-with-the-mailing-list camp, but I've recently come around to the view that the status quo is untenable. I looked into it after Racket 'Con and discovered the mailing list had shrunk especially much for me, because the Google Groups spam filters were letting

Re: [racket-users] How to learn the *core* of Racket?

On Thu, Nov 11, 2021 at 9:20 PM Yushuo Xiao wrote: > Thank you very much! I didn't know the set is not fixed. And thinking of > them as an IR really helps. > > On Friday, November 12, 2021 at 12:15:39 AM UTC+8 johnbclements wrote: > >> That’s a true statement… but that set is by no means fixed.

Re: the end of the [racket-users] mailing list and the migration to Discourse as a forum for Racket

On Monday, November 22, 2021 at 10:16:49 AM UTC-5 Jens Axel Søgaard wrote: > There is no need to rush things however. > In due course maybe the number of users on the forum will > grow to outshadow the number of participants on the mailing list, > but it will take some years. > This was my

Re: [racket-users] [ANN] Splitflap: generating valid Atom and RSS feeds

On Tue, Oct 26, 2021 at 12:01 PM Sage Gerard wrote: > >- The IANA's timezone database changed this month, and gregor's last >commit was 2 years ago. > > My comment was not meant to say that timezone math is easy to replace, or > even that gregor isn't a fit. It's to say that I'm not

Re: [racket-users] [ANN] Splitflap: generating valid Atom and RSS feeds

Excited to try this! Generating Atom and RSS feeds is on the to-do list for one of my current projects. On Mon, Oct 25, 2021 at 10:25 PM 'Joel Dueck' wrote: > >- MIME types: Yes, I should use/add a more complete extension→type >mapping, though I probably will continue not to validate

Re: [racket-users] [ANN] Splitflap: generating valid Atom and RSS feeds

On Tue, Oct 26, 2021 at 1:30 PM Sage Gerard wrote: > > Jon: I'm guessing you haven't actually tried this > > Phillip: I guess the check doesn't happen as part of `tz/c`, but I can > tell you that this program > > Yes, but I'm talking about code we were asked to give feedback on. I focus > on

Re: [racket-users] looking for advice on a web background process manager

Hi, On Thu, Dec 30, 2021 at 3:33 PM 'Wayne Harris' via Racket Users < racket-users@googlegroups.com> wrote: > I'm considering writing a manager for background processes --- such as > send a batch of e-mail or other process that takes a while to finish --- > for a web system. > > I see the

Re: Fwd: [racket-users] Writing a "command-line front-end" for a language

On Sun, Sep 4, 2022, at 10:00 AM, Reuben Thomas wrote: > On Sun, 4 Sept 2022 at 10:31, Reuben Thomas wrote: >> On Sun, 4 Sept 2022 at 04:13, Philip McGrath >> wrote: >>> >>> However, in some cases you might really want a program other than `racket` >>

Re: Fwd: [racket-users] Writing a "command-line front-end" for a language

On Sat, Sep 3, 2022, at 2:09 PM, Shu-Hung You wrote: > -- Forwarded message - > From: Shu-Hung You > Date: Sat, Sep 3, 2022 at 1:03 PM > Subject: Re: [racket-users] Writing a "command-line front-end" for a language > To: Reuben Thomas > > > Running `racket foo.asm` will produce

Re: [racket-users] raco pkg for a one-directory, moveable installation

Hi, On Mon, Aug 8, 2022, at 5:46 PM, knigh...@gmail.com wrote: > Hello all > > I'm trying to generate an installation that is self-contained, that I can > move to another machine just by tar-untar or zip-unzip. > > The target machine may never be connected to the internet, so if I want to >

Re: [racket-users] How shall I add collection path?

Hi, On Mon, Aug 8, 2022, at 12:59 PM, Don Green wrote: > For some reason, the collection directories below does not include the only > collection directory that I use: > /home/don/.plt-scheme/4.2.1/collects > which I do have showing up in DrRacket's options: /Language/Choose Language/ >

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