# Latest **URL:** https://racket.discourse.group/latest.md?page=25 [Latest](https://racket.discourse.group/latest.md) · [Categories](https://racket.discourse.group/categories.md) · [Tags](https://racket.discourse.group/tags.md) **Page:** 26 --- ## [Racket v8.14 is now available](https://racket.discourse.group/t/racket-v8-14-is-now-available/3113)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 9\ **Last updated:** [September 9, 2024, 11:19am UTC](https://racket.discourse.group/t/racket-v8-14-is-now-available/3113 "2024-09-09T11:19:28Z")
We are pleased to announce Racket v8.14 is now available from download.racket-lang.org. As of this release: 64-bit ARM Windows is one of the standard pre-built downloads. The compiler/demod language integrates d… --- ## [List of syntaxes objects becomes syntax of a list of objects when porting code from Racket/R6RS to Racket](https://racket.discourse.group/t/list-of-syntaxes-objects-becomes-syntax-of-a-list-of-objects-when-porting-code-from-racket-r6rs-to-racket/3158)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 3\ **Last updated:** [September 9, 2024, 10:34am UTC](https://racket.discourse.group/t/list-of-syntaxes-objects-becomes-syntax-of-a-list-of-objects-when-porting-code-from-racket-r6rs-to-racket/3158 "2024-09-09T10:34:19Z")
hello, i'm having a bug i have found no explanation for now.... I'm porting my code from Racket/R6RS to Racket. For now i just have to translate R6RS library into Racket module for each files , so there is only the he… --- ## [New YAML parser](https://racket.discourse.group/t/new-yaml-parser/3159)
**Author:** [@cadence](https://racket.discourse.group/u/cadence)\ **Replies:** 0\ **Last updated:** [September 9, 2024, 9:48am UTC](https://racket.discourse.group/t/new-yaml-parser/3159 "2024-09-09T09:48:28Z")
I wanted to parse some really big YAML files, but found that the existing package was too slow. So I created my own parser called microyaml. It is not spec-compliant because it has some missing features, but all of the m… --- ## [Migrate packages from 8.13 to 8.14 on Debian](https://racket.discourse.group/t/migrate-packages-from-8-13-to-8-14-on-debian/3151)
**Author:** [@Cyrille](https://racket.discourse.group/u/Cyrille)\ **Replies:** 13\ **Last updated:** [September 8, 2024, 8:15pm UTC](https://racket.discourse.group/t/migrate-packages-from-8-13-to-8-14-on-debian/3151 "2024-09-08T20:15:34Z")
Can't update. Here is the error message open-output-file: error opening file path: /usr/share/racket/pkgs/.LOCKpkgs.rktd system error: Permission non accordée; errno=13 context...: /usr/share/racket/collects/ra… --- ## [Racket meet-up: Saturday, 7 September, 2024 at 18:00 UTC](https://racket.discourse.group/t/racket-meet-up-saturday-7-september-2024-at-18-00-utc/3156)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [September 6, 2024, 8:42pm UTC](https://racket.discourse.group/t/racket-meet-up-saturday-7-september-2024-at-18-00-utc/3156 "2024-09-06T20:42:05Z")
Everyone is welcome to join us on Jitsi Meet for the Racket meet-up: Saturday, 7 September, 2024 at 18:00 UTC In your timezone: 2024-09-07T18:00:00Z (UTC). (converter) At this meet-up: RacketCon https://con.racket-la… --- ## [Impossible to use gui package installer even after recompile from source](https://racket.discourse.group/t/impossible-to-use-gui-package-installer-even-after-recompile-from-source/3154)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 1\ **Last updated:** [September 6, 2024, 5:15pm UTC](https://racket.discourse.group/t/impossible-to-use-gui-package-installer-even-after-recompile-from-source/3154 "2024-09-06T17:15:59Z")
hello, having constant crash when using the GUI package manager from a binary install i decided to compile from source the 8.14 version but the compilation finish apparently with this warning: compiler/cm: finish-com… --- ## [LangDev Conference 2024](https://racket.discourse.group/t/langdev-conference-2024/3153)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [September 6, 2024, 11:49am UTC](https://racket.discourse.group/t/langdev-conference-2024/3153 "2024-09-06T11:49:47Z")
Hi, I just noticed the LangDev Conference is happening in Seville, 17-19 October 2024. (Only a couple of weeks after RacketCon at University of Washington October 5-6 - get your tickets now https://con.racket-lang.org/) … --- ## [When there is " in XML, how to get the whole string?](https://racket.discourse.group/t/when-there-is-quot-in-xml-how-to-get-the-whole-string/3144)
**Author:** [@luistung](https://racket.discourse.group/u/luistung)\ **Replies:** 10\ **Last updated:** [September 3, 2024, 5:44pm UTC](https://racket.discourse.group/t/when-there-is-quot-in-xml-how-to-get-the-whole-string/3144 "2024-09-03T17:44:25Z")
I have a xml file. \ \\{"key1":"value1"}\\ \\{"key2":"value2"}\\ \ read it using (print (xml-\>xexpr (document-element (read-xml (open-input-file "prob… --- ## [Change "name" configuration of snapshot builds?](https://racket.discourse.group/t/change-name-configuration-of-snapshot-builds/3087)
**Author:** [@mflatt](https://racket.discourse.group/u/mflatt)\ **Replies:** 3\ **Last updated:** [September 5, 2024, 12:57pm UTC](https://racket.discourse.group/t/change-name-configuration-of-snapshot-builds/3087 "2024-09-05T12:57:55Z")
Short version: I propose that we change the snapshot builds to be more like regular releases: Use the snapshot version number as the installation's "name", which affects the way that packages get installed by default. L… --- ## [Streams and golden ratio](https://racket.discourse.group/t/streams-and-golden-ratio/3152)
**Author:** [@matteo-daddio](https://racket.discourse.group/u/matteo-daddio)\ **Replies:** 2\ **Last updated:** [September 5, 2024, 12:45pm UTC](https://racket.discourse.group/t/streams-and-golden-ratio/3152 "2024-09-05T12:45:06Z")
Hello, experimenting with streams I found, by chance, a very simple way to compute the golden ratio. I don't know if it's well known: (define (improve n) (/ (+ n 1) n)) (define golden-ratio (stream-cons 1 (stream-map … --- ## [Is there a procedure for combinations of list elements?](https://racket.discourse.group/t/is-there-a-procedure-for-combinations-of-list-elements/3148)
**Author:** [@joskoot](https://racket.discourse.group/u/joskoot)\ **Replies:** 3\ **Last updated:** [September 4, 2024, 4:23pm UTC](https://racket.discourse.group/t/is-there-a-procedure-for-combinations-of-list-elements/3148 "2024-09-04T16:23:52Z")
Looking around I could not find a procedure that given a list lst and a natural number n returns a list of all (expt (length lst) n) combinations of the elements of the lst. I have concocted the following, but probably a… --- ## [\[TFP 2025 Call for Papers\] 25th International Symposium on Trends in Functional Programming (Oxford, UK)](https://racket.discourse.group/t/tfp-2025-call-for-papers-25th-international-symposium-on-trends-in-functional-programming-oxford-uk/3150)
**Author:** [@peter88](https://racket.discourse.group/u/peter88)\ **Replies:** 0\ **Last updated:** [September 4, 2024, 8:14am UTC](https://racket.discourse.group/t/tfp-2025-call-for-papers-25th-international-symposium-on-trends-in-functional-programming-oxford-uk/3150 "2024-09-04T08:14:41Z")
TFP 2025 – Call for Papers (trendsfp.github.io) Important Dates Submission deadline (pre-symposium, full papers): Wed 13th Nov 2024 (AOE) Notification (pre-symposium, full papers): Wed 11th Dec 2024 Submission … --- ## [Update of library Scheme+ for Racket-R6RS with and checked by a full graphic example](https://racket.discourse.group/t/update-of-library-scheme-for-racket-r6rs-with-and-checked-by-a-full-graphic-example/3146)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 0\ **Last updated:** [September 2, 2024, 9:43am UTC](https://racket.discourse.group/t/update-of-library-scheme-for-racket-r6rs-with-and-checked-by-a-full-graphic-example/3146 "2024-09-02T09:43:16Z")
Hello, As written in the title, i published an update because there was a bug preventing to use square bracket indexing that was found when coding a full graphical example that used indexing of arrays with \[ \]. Rega… --- ## [R6RS and optional arguments with keywords (plot for example)](https://racket.discourse.group/t/r6rs-and-optional-arguments-with-keywords-plot-for-example/3141)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 4\ **Last updated:** [September 1, 2024, 2:02pm UTC](https://racket.discourse.group/t/r6rs-and-optional-arguments-with-keywords-plot-for-example/3141 "2024-09-01T14:02:00Z")
hello, i can not find a way to use all the feature of plot library in R6RS because i can not pass all the options. : is forbiden in R6RS and so #:something too for example, this works: #!r6rs (library (test-plot) … --- ## [Have you got your RacketCon ticket yet?](https://racket.discourse.group/t/have-you-got-your-racketcon-ticket-yet/3143)
**Author:** [@spdegabrielle](https://racket.discourse.group/u/spdegabrielle)\ **Replies:** 0\ **Last updated:** [September 1, 2024, 4:24pm UTC](https://racket.discourse.group/t/have-you-got-your-racketcon-ticket-yet/3143 "2024-09-01T16:24:11Z")
Have you got your RacketCon ticket yet? poll Get yours at https://con.racket-lang.org/ - remote and in-person available. --- ## [Is it possible to match a set?](https://racket.discourse.group/t/is-it-possible-to-match-a-set/3142)
**Author:** [@dstorrs](https://racket.discourse.group/u/dstorrs)\ **Replies:** 2\ **Last updated:** [September 1, 2024, 4:12pm UTC](https://racket.discourse.group/t/is-it-possible-to-match-a-set/3142 "2024-09-01T16:12:07Z")
I can't believe I've never noticed this before, but is there a way to use match with set? (match (set 1 2 3) \[(set 1 2 3) 'matched\] \[\_ 'not-matched\]) ;; Error: syntax error in pattern in: (set 1 2 3) I suppose it… --- ## [Mutable mpair vs immutable pair, how to port code](https://racket.discourse.group/t/mutable-mpair-vs-immutable-pair-how-to-port-code/3135)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 4\ **Last updated:** [August 31, 2024, 3:12pm UTC](https://racket.discourse.group/t/mutable-mpair-vs-immutable-pair-how-to-port-code/3135 "2024-08-31T15:12:41Z")
hello again, i have a serious problem porting code from Racket that use immutable list to r6rs at some point i got this error i do not understand and do not know how to solve: \<- : #'parsed-args=.#\ **Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 3\ **Last updated:** [August 31, 2024, 8:02am UTC](https://racket.discourse.group/t/module-inter-depandancies/3133 "2024-08-31T08:02:46Z") hello, In R6RS code i have a module A (assignment) that needs a module B (set-values-plus) and B also needs module A. Should i put all code in the same module? or is there a way to solve this problem otherwise,because … --- ## [Few problems with last version of Racket](https://racket.discourse.group/t/few-problems-with-last-version-of-racket/3134)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 2\ **Last updated:** [August 30, 2024, 8:34pm UTC](https://racket.discourse.group/t/few-problems-with-last-version-of-racket/3134 "2024-08-30T20:34:32Z")
hello, i got a problem yesterday that force me to upgrade from racket 8.13 to 8.14, the packet manager was freezing, i do not know exactly the cause but it seems that having in the available modules both a local on disk… --- ## [(require plot) not working](https://racket.discourse.group/t/require-plot-not-working/3132)
**Author:** [@AlexG](https://racket.discourse.group/u/AlexG)\ **Replies:** 2\ **Last updated:** [August 30, 2024, 1:33am UTC](https://racket.discourse.group/t/require-plot-not-working/3132 "2024-08-30T01:33:42Z")
I am trying to add some plotting to a program that uses malt - (require malt) - the library that is provided as support to The Little Learner. When I add (require plot), I get the error: . module: identifier already r… --- ## [Trouble finishing installation with racket cs on a raspberry pi](https://racket.discourse.group/t/trouble-finishing-installation-with-racket-cs-on-a-raspberry-pi/3131)
**Author:** [@Zeb](https://racket.discourse.group/u/Zeb)\ **Replies:** 5\ **Last updated:** [August 29, 2024, 6:45pm UTC](https://racket.discourse.group/t/trouble-finishing-installation-with-racket-cs-on-a-raspberry-pi/3131 "2024-08-29T18:45:16Z")
Is this possible? I'm currently trying to build racket and it's hung up on a package that's failing to compile. The error message is completely unhelpful. I'd like to just skip it for now if possible. I also have a hunc… --- ## [Is there any way to change the color of a point of points of plot?](https://racket.discourse.group/t/is-there-any-way-to-change-the-color-of-a-point-of-points-of-plot/3121)
**Author:** [@cametan](https://racket.discourse.group/u/cametan)\ **Replies:** 11\ **Last updated:** [August 28, 2024, 1:47pm UTC](https://racket.discourse.group/t/is-there-any-way-to-change-the-color-of-a-point-of-points-of-plot/3121 "2024-08-28T13:47:29Z")
Hello. As the title says(ppp...), I am looking for the way to give different color respectively to each point which points of plot library. #lang racket (require (only-in srfi/41 stream-iterate) plot) (define (chaos … --- ## [Resyntax now uses fmt to format suggestions](https://racket.discourse.group/t/resyntax-now-uses-fmt-to-format-suggestions/3120)
**Author:** [@notjack](https://racket.discourse.group/u/notjack)\ **Replies:** 2\ **Last updated:** [August 28, 2024, 4:41pm UTC](https://racket.discourse.group/t/resyntax-now-uses-fmt-to-format-suggestions/3120 "2024-08-28T16:41:26Z")
Resyntax, the macro-powered refactoring tool I created (and announced previously), now uses Sorawee's fmt autoformatter to format its suggested fixes to your code. This eliminates Resyntax's dependency on the GUI framewo… --- ## [Error when creating an executable of a script](https://racket.discourse.group/t/error-when-creating-an-executable-of-a-script/3122)
**Author:** [@Zeb](https://racket.discourse.group/u/Zeb)\ **Replies:** 2\ **Last updated:** [August 26, 2024, 1:49pm UTC](https://racket.discourse.group/t/error-when-creating-an-executable-of-a-script/3122 "2024-08-26T13:49:45Z")
I tried to make an exe out of a script and got back this error: expand-elf: cannot move SHT\_PROGBITS section context...: /data/data/com.termux/files/usr/share/racket/collects/compiler/private/elf.rkt:442:11: for-lo… --- ## [Release Announcement for v8.14](https://racket.discourse.group/t/release-announcement-for-v8-14/3048)
**Author:** [@jbclements](https://racket.discourse.group/u/jbclements)\ **Replies:** 36\ **Last updated:** [August 26, 2024, 1:27am UTC](https://racket.discourse.group/t/release-announcement-for-v8-14/3048 "2024-08-26T01:27:16Z")
The release announcement sketch that I have so far is below. Please mail me new items and/or edits. Please phrase announcements using complete sentences and avoid the word "now". Demodularization is more flexible, … --- ## [What's the principle of Racketscript](https://racket.discourse.group/t/whats-the-principle-of-racketscript/3072)
**Author:** [@WSWZhh](https://racket.discourse.group/u/WSWZhh)\ **Replies:** 7\ **Last updated:** [August 25, 2024, 6:28pm UTC](https://racket.discourse.group/t/whats-the-principle-of-racketscript/3072 "2024-08-25T18:28:49Z")
hi, I'm interested in racketscript and want to make it stronger. hmm,what is the key in racketscript,the racket-\>js compiler? as an language-oriented language ,what adventures does racket have to do that? racket's nat… --- ## [How to run ProfessorJ code in DrRacket?](https://racket.discourse.group/t/how-to-run-professorj-code-in-drracket/3117)
**Author:** [@ayo](https://racket.discourse.group/u/ayo)\ **Replies:** 7\ **Last updated:** [August 24, 2024, 3:38pm UTC](https://racket.discourse.group/t/how-to-run-professorj-code-in-drracket/3117 "2024-08-24T15:38:21Z")
I am following HtDC but I have not been able to run ProfessorJ in DrRacket. The profj docs make it look simple, but I can't tell what I'm doing wrong. Please how do I do this successfully? --- ## [Return urmodule as a string without writing a file](https://racket.discourse.group/t/return-urmodule-as-a-string-without-writing-a-file/3115)
**Author:** [@nik](https://racket.discourse.group/u/nik)\ **Replies:** 2\ **Last updated:** [August 21, 2024, 7:10am UTC](https://racket.discourse.group/t/return-urmodule-as-a-string-without-writing-a-file/3115 "2024-08-21T07:10:21Z")
I was wondering whether it's possible to use urlang in such a way that the content of the module is simply returned, instead of writing it out to a file. That way I suppose it could be combined to insert some javascript… --- ## [Scheme+ for R6RS and SRFI 105](https://racket.discourse.group/t/scheme-for-r6rs-and-srfi-105/3114)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 0\ **Last updated:** [August 20, 2024, 5:19pm UTC](https://racket.discourse.group/t/scheme-for-r6rs-and-srfi-105/3114 "2024-08-20T17:19:52Z")
Hello, i released a modular version of Scheme+ compatible with Racket R6RS. Scheme+ for Racket R6RS The SRFI 105 Curly Infix parser is now external as a module. SRFI 105 Curly Infix for Racket and Racket R6RS. Ther… --- ## [Example of Deep Neural Network in Racket: computation of Neural Sine](https://racket.discourse.group/t/example-of-deep-neural-network-in-racket-computation-of-neural-sine/3110)
**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\ **Replies:** 2\ **Last updated:** [August 19, 2024, 10:01pm UTC](https://racket.discourse.group/t/example-of-deep-neural-network-in-racket-computation-of-neural-sine/3110 "2024-08-19T22:01:12Z")
hello, i present an example of use of Racket in science for the computation and plot of the sine function in Racket computed with a neural network. Here is the plot of the neural sine in -pi/2 and pi/2 : this is a g… [Previous page](https://racket.discourse.group/latest.md?page=24) [Next page](https://racket.discourse.group/latest.md?page=26)