# Latest **URL:** https://racket.discourse.group/latest.md?page=26 [Latest](https://racket.discourse.group/latest.md) · [Categories](https://racket.discourse.group/categories.md) · [Tags](https://racket.discourse.group/tags.md) **Page:** 27 --- ## [Racket Survey 2024](https://racket.discourse.group/t/racket-survey-2024/3052)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 3\ **Last updated:** [August 19, 2024, 11:16am UTC](https://racket.discourse.group/t/racket-survey-2024/3052 "2024-08-19T11:16:08Z")
Hi, The Racket Survey is intended to better understand the needs of Racket users and the broader Racket community. https://docs.google.com/forms/d/e/1FAIpQLSc5dMpqUE6y0\_Wtb9s0ePFzbnNtNlYQpYfumAp94gdhdE1kVg/viewform?usp… --- ## [How to trace macro'ed define to it's original location](https://racket.discourse.group/t/how-to-trace-macroed-define-to-its-original-location/3102)
**Author:** [@Zeb](https://racket.discourse.group/u/Zeb)\ **Replies:** 4\ **Last updated:** [August 17, 2024, 10:45pm UTC](https://racket.discourse.group/t/how-to-trace-macroed-define-to-its-original-location/3102 "2024-08-17T22:45:39Z")
If a define is introduced by a macro, how do I trace that back to it's original location? And I want is to do this in a tool analyzing a racket file where these macros exist. It won't be during compiling+running the file… --- ## [Include partial content from another scribble document](https://racket.discourse.group/t/include-partial-content-from-another-scribble-document/3100)
**Author:** [@nik](https://racket.discourse.group/u/nik)\ **Replies:** 9\ **Last updated:** [August 17, 2024, 9:33am UTC](https://racket.discourse.group/t/include-partial-content-from-another-scribble-document/3100 "2024-08-17T09:33:30Z")
I was wondering whether it's possible to include content from another scribble document directly. I know that it's possible to reference other parts via the tagging functionality, but would something similar be possible… --- ## [Higher Kinded Types](https://racket.discourse.group/t/higher-kinded-types/3103)
**Author:** [@qnc](https://racket.discourse.group/u/qnc)\ **Replies:** 0\ **Last updated:** [August 16, 2024, 7:29am UTC](https://racket.discourse.group/t/higher-kinded-types/3103 "2024-08-16T07:29:17Z")
I'm wondering whether HKTs are supported in Typed Racket. Take this Haskell snippet for example: type TypeApply f x = f x I've tried the following which didn't work: (define-type (TypeApply f x) (f x)) --- ## [Error 'cond: unbound identifier; also, no #%app syntax transformer is bound'](https://racket.discourse.group/t/error-cond-unbound-identifier-also-no-app-syntax-transformer-is-bound/3081)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 12\ **Last updated:** [August 15, 2024, 10:09am UTC](https://racket.discourse.group/t/error-cond-unbound-identifier-also-no-app-syntax-transformer-is-bound/3081 "2024-08-15T10:09:55Z")
Hello, i have an error i can not resolve in racket/r6rs. The almost same code works in Guile (pure Guile) and Kawa (approx. r7rs) . I think it should works in Racket but i have re-written a lot of code in R6RS and i wi… --- ## [Racket on Pinebook Pro](https://racket.discourse.group/t/racket-on-pinebook-pro/3093)
**Author:** [@hendrikboom3](https://racket.discourse.group/u/hendrikboom3)\ **Replies:** 2\ **Last updated:** [August 15, 2024, 9:27am UTC](https://racket.discourse.group/t/racket-on-pinebook-pro/3093 "2024-08-15T09:27:37Z")
I've been thinking about getting a Pinebook Pro as an inexpensive travelling computer. I plan to use it for writing. But I wonder about using Racket on it. DrRacket is one of the tools I use for writing (I write code … --- ## [Internal pkgs mirror](https://racket.discourse.group/t/internal-pkgs-mirror/3099)
**Author:** [@db7](https://racket.discourse.group/u/db7)\ **Replies:** 2\ **Last updated:** [August 15, 2024, 8:04am UTC](https://racket.discourse.group/t/internal-pkgs-mirror/3099 "2024-08-15T08:04:08Z")
I would like to setup a mirror of pkgs.racket-lang.org inside our company. Our http proxy does not work well with raco and all workarounds I’ve tried are ugly. Setting up a mirror sounds like a solid solution. Ideally, … --- ## [Parameterize not working as expected in 8.13](https://racket.discourse.group/t/parameterize-not-working-as-expected-in-8-13/3071)
**Author:** [@Greg\_Davidson](https://racket.discourse.group/u/Greg_Davidson)\ **Replies:** 6\ **Last updated:** [August 14, 2024, 9:59pm UTC](https://racket.discourse.group/t/parameterize-not-working-as-expected-in-8-13/3071 "2024-08-14T21:59:46Z")
I expected (host) to change to "hello" and then to "hi". I'm not understanding how it's becoming #t at all! #lang racket/base (define \*host\* (make-parameter "ngender.net" string? 'host)) (eprintf "\[0\] host ~a\\n" (\*ho… --- ## [RacketCon registration is now open](https://racket.discourse.group/t/racketcon-registration-is-now-open/3097)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [August 14, 2024, 9:15pm UTC](https://racket.discourse.group/t/racketcon-registration-is-now-open/3097 "2024-08-14T21:15:27Z")
RacketCon registration is now open To register, buy a ticket via Eventbrite. If you cannot attend in-person, there is an option on Eventbrite for remote participation to support the livestream. https://con.racket-lang… --- ## [Flomat install under linux: can not find libfortran](https://racket.discourse.group/t/flomat-install-under-linux-can-not-find-libfortran/3088)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 13\ **Last updated:** [August 14, 2024, 8:13am UTC](https://racket.discourse.group/t/flomat-install-under-linux-can-not-find-libfortran/3088 "2024-08-14T08:13:13Z")
hello, on a fresh linux install i can not install flomat package (sci) , as it was a new linux install i installed gcc, libfortran, ffi-dev but i still have the same error: any idea? regards, Damien --- ## [\`rlwrap racket\`](https://racket.discourse.group/t/rlwrap-racket/3084)
**Author:** [@not-just-yeti](https://racket.discourse.group/u/not-just-yeti)\ **Replies:** 2\ **Last updated:** [August 12, 2024, 4:16pm UTC](https://racket.discourse.group/t/rlwrap-racket/3084 "2024-08-12T16:16:59Z")
I've been setting up my .inputrc so that I can get vi-keybinding-goodness in various shells/repls. For racket, rlwrap ends up overwriting the "\>" prompt (I can see it momentarily, then it disappears). I ended up faking… --- ## [Kattis.com now allows racket](https://racket.discourse.group/t/kattis-com-now-allows-racket/3085)
**Author:** [@not-just-yeti](https://racket.discourse.group/u/not-just-yeti)\ **Replies:** 0\ **Last updated:** [August 12, 2024, 1:27am UTC](https://racket.discourse.group/t/kattis-com-now-allows-racket/3085 "2024-08-12T01:27:05Z")
The competetive coding site https://open.kattis.com recently added racket as one of their many allowed languages. If you try it out and run in to any issues, you can let them (or me) know! --- ## [Post-Chez 10 Distro & Release Considerations](https://racket.discourse.group/t/post-chez-10-distro-release-considerations/2739)
**Author:** [@LiberalArtist](https://racket.discourse.group/u/LiberalArtist)\ **Replies:** 4\ **Last updated:** [August 11, 2024, 6:07pm UTC](https://racket.discourse.group/t/post-chez-10-distro-release-considerations/2739 "2024-08-11T18:07:59Z")
A couple weeks ago, Chez Scheme 10.0 was released, incorporating all of the changes from Racket's branch of Chez Scheme. I'm especially excited about this because Guix has been distributing Racket's branch to support arc… --- ## [Racket meet-up: Saturday, 3 August, 2024 at 18:00 UTC](https://racket.discourse.group/t/racket-meet-up-saturday-3-august-2024-at-18-00-utc/3073)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 1\ **Last updated:** [August 3, 2024, 2:51pm UTC](https://racket.discourse.group/t/racket-meet-up-saturday-3-august-2024-at-18-00-utc/3073 "2024-08-03T14:51:16Z")
Everyone is welcome to join us on Jitsi Meet for the Racket meet-up: Saturday, 3 August, 2024 at 18:00 UTC In your timezone: 2024-08-03T18:00:00Z (UTC). (converter) At this meet-up: Racket Survey 2024 Show and tell N… --- ## [True and false which one?](https://racket.discourse.group/t/true-and-false-which-one/3060)
**Author:** [@matteo-daddio](https://racket.discourse.group/u/matteo-daddio)\ **Replies:** 4\ **Last updated:** [August 2, 2024, 9:40pm UTC](https://racket.discourse.group/t/true-and-false-which-one/3060 "2024-08-02T21:40:06Z")
In Racket is possible to write #t #T #true true and #f #F #false false. Which one do you prefer? I prefer #true and #false. --- ## [RacketCon 2024 update 2-Aug-2024](https://racket.discourse.group/t/racketcon-2024-update-2-aug-2024/3070)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [August 2, 2024, 1:33pm UTC](https://racket.discourse.group/t/racketcon-2024-update-2-aug-2024/3070 "2024-08-02T13:33:36Z")
RacketCon planning is coming along nicely! We've locked down a few talks already, and a nice program is taking shape for October. There are still a few slots open, so if you've been working on some Racket-y stuff and wou… --- ## [Racket macro: cond/define](https://racket.discourse.group/t/racket-macro-cond-define/3053)
**Author:** [@cadence](https://racket.discourse.group/u/cadence)\ **Replies:** 6\ **Last updated:** [August 1, 2024, 7:16pm UTC](https://racket.discourse.group/t/racket-macro-cond-define/3053 "2024-08-01T19:16:04Z")
I wrote a macro and wrote a blog post about it: Racket macro: cond/define - cadence's weblog (personal blog) Here's the macro: (define-syntax (cond/define stx) (syntax-parse stx ;; terminating with else \[(\_ … --- ## [Requiring a file that is in a directory containing a dot](https://racket.discourse.group/t/requiring-a-file-that-is-in-a-directory-containing-a-dot/3062)
**Author:** [@nik](https://racket.discourse.group/u/nik)\ **Replies:** 8\ **Last updated:** [August 1, 2024, 5:12pm UTC](https://racket.discourse.group/t/requiring-a-file-that-is-in-a-directory-containing-a-dot/3062 "2024-08-01T17:12:26Z")
I was trying to require a file that is inside a directory via a relative path. Surprisingly, this did not work, but resulted in an error. For example, I have the file dir.dot/x.rkt (the content does not matter). When … --- ## [\#'else used in match](https://racket.discourse.group/t/else-used-in-match/3066)
**Author:** [@WSWZhh](https://racket.discourse.group/u/WSWZhh)\ **Replies:** 3\ **Last updated:** [August 1, 2024, 11:03am UTC](https://racket.discourse.group/t/else-used-in-match/3066 "2024-08-01T11:03:22Z")
\/dsl/nested-word-list\> (define (tokenize s) (for/list (\[str (regexp-match\* #px"\\\\(|\\\\)|\\\\w+" s)\]) (match str … --- ## [Can high order function replace macro](https://racket.discourse.group/t/can-high-order-function-replace-macro/3063)
**Author:** [@WSWZhh](https://racket.discourse.group/u/WSWZhh)\ **Replies:** 5\ **Last updated:** [July 31, 2024, 9:20pm UTC](https://racket.discourse.group/t/can-high-order-function-replace-macro/3063 "2024-07-31T21:20:42Z")
The version of macro (define-syntax (hyphen-define/ok1 stx) (syntax-case stx () \[(\_ a b (args ...) body0 body ...) (syntax-case (datum-\>syntax #'a (string-\>symbol (for… --- ## [Bug in config pyffi](https://racket.discourse.group/t/bug-in-config-pyffi/3056)
**Author:** [@WSWZhh](https://racket.discourse.group/u/WSWZhh)\ **Replies:** 2\ **Last updated:** [July 31, 2024, 8:06am UTC](https://racket.discourse.group/t/bug-in-config-pyffi/3056 "2024-07-31T08:06:14Z")
already: PS F:\\RacketFile\\Functional-Programming-Racket-Parser\> raco pyffi show Current configuration for 'pyffi'. libdir = "F:\\\\python3.10" data = "F:\\\\python3.10" Meaning: libdir: location of the shared library… --- ## [For fastest executable: raco make, or exe, or ...?](https://racket.discourse.group/t/for-fastest-executable-raco-make-or-exe-or/3057)
**Author:** [@not-just-yeti](https://racket.discourse.group/u/not-just-yeti)\ **Replies:** 1\ **Last updated:** [July 30, 2024, 2:55pm UTC](https://racket.discourse.group/t/for-fastest-executable-raco-make-or-exe-or/3057 "2024-07-30T14:55:34Z")
What's the best way to get a speedy run, of an arbitrary racket program? Context: kattis.com, the competitive coding site, may be adding racket as an allowed language (yay!). They run a submitted-program repeatedly. P… --- ## [How to display full stack trace when Racket crashed](https://racket.discourse.group/t/how-to-display-full-stack-trace-when-racket-crashed/3059)
**Author:** [@Scarlet1ssimo](https://racket.discourse.group/u/Scarlet1ssimo)\ **Replies:** 3\ **Last updated:** [July 30, 2024, 2:51pm UTC](https://racket.discourse.group/t/how-to-display-full-stack-trace-when-racket-crashed/3059 "2024-07-30T14:51:41Z")
As the title says, it there a way to display full stack trace when Racket crashed? Or does "repeats 6 more times" literally indicates 6 more lines happens at the same place? @vector-length: arity mismatch; the expecte… --- ## [Call for Participation, Functional Software Architecture (Sep 6, Milan)](https://racket.discourse.group/t/call-for-participation-functional-software-architecture-sep-6-milan/3055)
**Author:** [@mike](https://racket.discourse.group/u/mike)\ **Replies:** 0\ **Last updated:** [July 29, 2024, 9:30am UTC](https://racket.discourse.group/t/call-for-participation-functional-software-architecture-sep-6-milan/3055 "2024-07-29T09:30:06Z")
Web version here: FUNARCH 2024 | Functional Architecture ====================================================================== \*\*\* FUNARCH 2024 -- CALL FOR PARTICIPATION \*\*\* The Second ACM SIGPLAN Workshop on… --- ## [Macro does not works in R6RS but in Racket](https://racket.discourse.group/t/macro-does-not-works-in-r6rs-but-in-racket/3050)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 15\ **Last updated:** [July 28, 2024, 2:41pm UTC](https://racket.discourse.group/t/macro-does-not-works-in-r6rs-but-in-racket/3050 "2024-07-28T14:41:15Z")
hello, the code below used to works in Racket but not R6RS: #!r6rs (library (def) (export if-defined) (import (rnrs base (6)) (only (racket) identifier-binding)) ;;(define-syntax (if-defined stx) (d… --- ## [Does glob ever return strings? If not, should we update the docs?](https://racket.discourse.group/t/does-glob-ever-return-strings-if-not-should-we-update-the-docs/3049)
**Author:** [@benknoble](https://racket.discourse.group/u/benknoble)\ **Replies:** 4\ **Last updated:** [July 27, 2024, 2:24pm UTC](https://racket.discourse.group/t/does-glob-ever-return-strings-if-not-should-we-update-the-docs/3049 "2024-07-27T14:24:27Z")
I've only been able to observe glob from file/glob returning paths, but it is documented as returning a (listof path-string?). Are there actually cases where it returns strings? A few quick experiments indicate it only r… --- ## [Could the t-Student distribution be included in the math module?](https://racket.discourse.group/t/could-the-t-student-distribution-be-included-in-the-math-module/2999)
**Author:** [@encomer](https://racket.discourse.group/u/encomer)\ **Replies:** 17\ **Last updated:** [July 26, 2024, 2:05pm UTC](https://racket.discourse.group/t/could-the-t-student-distribution-be-included-in-the-math-module/2999 "2024-07-26T14:05:53Z")
Hello math module friends: Could it be possible to include some functions for the t-Student distribution in the math module? May be for the moment, starting with the centered version. An example (very basic and possib… --- ## [Language sweet spots](https://racket.discourse.group/t/language-sweet-spots/2998)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 6\ **Last updated:** [July 26, 2024, 3:32am UTC](https://racket.discourse.group/t/language-sweet-spots/2998 "2024-07-26T03:32:48Z")
I saw an interesting response on another forum that talked about language design (+ implementation?) ‘sweet spots’. Racket hits a sweet spot for me with Parenthetical syntax expression based TCO Modules contracts and … --- ## [Testing for the v8.14 release](https://racket.discourse.group/t/testing-for-the-v8-14-release/3038)
**Author:** [@jbclements](https://racket.discourse.group/u/jbclements)\ **Replies:** 7\ **Last updated:** [July 24, 2024, 11:05pm UTC](https://racket.discourse.group/t/testing-for-the-v8-14-release/3038 "2024-07-24T23:05:46Z")
Testing for the v8.14 release (using the v8.13.900 release candidate build) Search for your name on the checklist page to find relevant items, either reply when you finish an item (please indicate which item/s is/are … --- ## [Quote syntactic sugar](https://racket.discourse.group/t/quote-syntactic-sugar/3047)
**Author:** [@matteo-daddio](https://racket.discourse.group/u/matteo-daddio)\ **Replies:** 5\ **Last updated:** [July 24, 2024, 7:46pm UTC](https://racket.discourse.group/t/quote-syntactic-sugar/3047 "2024-07-24T19:46:58Z")
Hi, is ‘x a syntactic sugar for (quote x)? Gemini says no and copilot/chat gpt says yes. Matteo [Previous page](https://racket.discourse.group/latest.md?page=25) [Next page](https://racket.discourse.group/latest.md?page=27)