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David Lambert
Dec 2
Is system error truly the intent?
I mistakenly used `: where agenda was intended. This was a user blunder rather than system error.
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Is system error truly the intent?
I mistakenly used `: where agenda was intended. This was a user blunder rather than system error.
Dec 2
Thomas McGuire
, …
Pascal Jasmin
16
Nov 26
testing LLM code generation
The terseness of J, and terseness of its parsing rules and mathematical notation, makes it an ideal
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testing LLM code generation
The terseness of J, and terseness of its parsing rules and mathematical notation, makes it an ideal
Nov 26
Eric John Sargeant
Nov 25
j9.7 jpkg install
This "https://curl.se/docs/sslserts.html" as seen with 'install'jpkg'*' is
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j9.7 jpkg install
This "https://curl.se/docs/sslserts.html" as seen with 'install'jpkg'*' is
Nov 25
John Dixon
, …
Skip Cave
3
Nov 13
Did anyone know David Keith?
Obituary of David Keith: https://www.theglobeandmail.com/canada/article-david-keith-obituary-tech-
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Did anyone know David Keith?
Obituary of David Keith: https://www.theglobeandmail.com/canada/article-david-keith-obituary-tech-
Nov 13
bobtherriault
, …
Raul Miller
10
Nov 12
The new ArrayCast episode is out.
After reading the transcript for this podcast, and spending a few days thinking about it (or, at
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The new ArrayCast episode is out.
After reading the transcript for this podcast, and spending a few days thinking about it (or, at
Nov 12
Eric John Sargeant
,
Leopold
2
Nov 12
keyword inconsistencies
Keywords are part of a language. Your example does not contain any. All of J's keywords can be
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keyword inconsistencies
Keywords are part of a language. Your example does not contain any. All of J's keywords can be
Nov 12
Skip Cave
, …
Devon McCormick
3
Nov 12
J Dynamic Functional Programming Monthly Meetup
Yes - thanks, Tom. You are exactly correct. I am in Spain now, returning soon. I sent out a notice to
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J Dynamic Functional Programming Monthly Meetup
Yes - thanks, Tom. You are exactly correct. I am in Spain now, returning soon. I sent out a notice to
Nov 12
Leopold Perné
,
bill lam
2
Nov 8
android version and download page
It is a wiki, you can edit it by yourself. Please request wiki edit permission if needed. On Sun, Nov
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android version and download page
It is a wiki, you can edit it by yourself. Please request wiki edit permission if needed. On Sun, Nov
Nov 8
Remington Furman
Nov 7
Quadrature oscillators
I had fun investigating quadrature oscillators using J and the plot library. A quadrature oscillator
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Quadrature oscillators
I had fun investigating quadrature oscillators using J and the plot library. A quadrature oscillator
Nov 7
田天宇
, …
Arnab Chakraborty
3
Nov 5
[Jforum]Unicode varibles name
Right. Even J must have some sanity! Thanks and regards, Arnab On Mon, Nov 3, 2025 at 3:06 PM Henry
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[Jforum]Unicode varibles name
Right. Even J must have some sanity! Thanks and regards, Arnab On Mon, Nov 3, 2025 at 3:06 PM Henry
Nov 5
jaco erasmus
, …
More Rice
9
Nov 4
Beginner question: Importing CSV
Thank you! Using load'csv' worked! So I can do basic stats now. I guess the next step will be
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Beginner question: Importing CSV
Thank you! Using load'csv' worked! So I can do basic stats now. I guess the next step will be
Nov 4
Brian Schott
, …
Joshua Y
18
Nov 3
crossword puzzle creation
My quick-fix would be something like this cw =. (* ,:@":@{. ])&.> n =. (>: i. +/ , sp)
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crossword puzzle creation
My quick-fix would be something like this cw =. (* ,:@":@{. ])&.> n =. (>: i. +/ , sp)
Nov 3
Eric Iverson
Nov 2
j guest server
The j guest server has been updated to the latest JHS. The try: dissect '1+=/i.3' man'
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j guest server
The j guest server has been updated to the latest JHS. The try: dissect '1+=/i.3' man'
Nov 2
Eric Iverson
Oct 30
JHS update available
JHS has been updated. Please get the new version with pacman and try out the new stuff. The dissect
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JHS update available
JHS has been updated. Please get the new version with pacman and try out the new stuff. The dissect
Oct 30
robert therriault
Oct 25
A repeat of the 1982 interview with Dr. Ken Iverson on the ArrayCast
In 1982, journalist Whitney Smith sat down and talked to Dr. Ken Iverson about a variety of topics.
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A repeat of the 1982 interview with Dr. Ken Iverson on the ArrayCast
In 1982, journalist Whitney Smith sat down and talked to Dr. Ken Iverson about a variety of topics.
Oct 25
Ak
, …
bill lam
7
Oct 23
Reading large dimension PNGs Error: Qt cannot read PNG file
Thank you Bill. This works. Ak -------- Original message -------- From: bill lam <bbill.lam@gmail.
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Reading large dimension PNGs Error: Qt cannot read PNG file
Thank you Bill. This works. Ak -------- Original message -------- From: bill lam <bbill.lam@gmail.
Oct 23
Daniikk1012
, …
chris burke
8
Oct 19
A Rubik's cube notation interpreter with conditionals and macros
Thanks for the feedback! I have already included roboks.ijs in the project, but it only loads the
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A Rubik's cube notation interpreter with conditionals and macros
Thanks for the feedback! I have already included roboks.ijs in the project, but it only loads the
Oct 19
Pascal Jasmin
, …
Ak
20
Oct 19
is there a need for byte integer data type?
I see. If I am correctly understanding the Techniques section, the method designs in some failure
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is there a need for byte integer data type?
I see. If I am correctly understanding the Techniques section, the method designs in some failure
Oct 19
David Lambert
,
Raul Miller
2
Oct 18
shorthand sought
Hmm... since concatenation is linear, this should be fairly trivial. (f, g) deriv N becomes f deriv N
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shorthand sought
Hmm... since concatenation is linear, this should be fairly trivial. (f, g) deriv N becomes f deriv N
Oct 18
Robert Cyr
,
Marcin Żołek
2
Oct 17
Apparent fault on Debug using $: on Mac
The issue with debug is now fixed. Please upgrade debug using the following commands in Jqt: load
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Apparent fault on Debug using $: on Mac
The issue with debug is now fixed. Please upgrade debug using the following commands in Jqt: load
Oct 17
Skip Cave
, …
Pascal Jasmin
8
Oct 12
Leap Years
A full rank J version (2 | 0 +/@:= 4 100 400 |/ ]) 2000+i.10 10 slightly slower than my original
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Leap Years
A full rank J version (2 | 0 +/@:= 4 100 400 |/ ]) 2000+i.10 10 slightly slower than my original
Oct 12
robert therriault
Oct 11
This episode of ArrayCast includes interviews with Ken Iverson and Ian Sharp
IP Sharp Associates - A Company Ahead of its Time Archival interviews by Whitney Smith and ArrayCast
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This episode of ArrayCast includes interviews with Ken Iverson and Ian Sharp
IP Sharp Associates - A Company Ahead of its Time Archival interviews by Whitney Smith and ArrayCast
Oct 11
Richard Donovan
,
Pascal Jasmin
2
Oct 10
Armstrong numbers
(] +/@:^ #) 10 #. inv 28116440335967x 28116440335967 this number seems prime. On Friday, October 10,
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Armstrong numbers
(] +/@:^ #) 10 #. inv 28116440335967x 28116440335967 this number seems prime. On Friday, October 10,
Oct 10
Richard Donovan
, …
bill lam
4
Oct 6
variable boxing
try this _5 <\ i.11 +---------+---------+--+ |0 1 2 3 4|5 6 7 8 9|10| +---------+---------+--+ On
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variable boxing
try this _5 <\ i.11 +---------+---------+--+ |0 1 2 3 4|5 6 7 8 9|10| +---------+---------+--+ On
Oct 6
Tony Poole
, …
Remington Furman
6
Oct 6
J9.6 Installing Problem on Debian 13
Thanks for the workaround. I'm in business now! Also, thanks for links to details on the broader
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J9.6 Installing Problem on Debian 13
Thanks for the workaround. I'm in business now! Also, thanks for links to details on the broader
Oct 6
chris burke
, …
Marcin Żołek
20
Oct 5
Juno
New version of Juno (https://jsoftware.github.io/juno/app/) is available. Until now, visual J
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Juno
New version of Juno (https://jsoftware.github.io/juno/app/) is available. Until now, visual J
Oct 5
Sanju Dutt
, …
Michael Day
8
Oct 5
Perfect number verb
Hi, thanks for taking the time to point out the issues with my attempt at a perfect number verb and
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Perfect number verb
Hi, thanks for taking the time to point out the issues with my attempt at a perfect number verb and
Oct 5
bobtherriault
Sep 27
On this episode of the ArrayCast - the limits of tacit with 'Pepe' José Mario Quintana
Tacit to the Limit Jose Mario Quintana (Pepe) is the master of tacit J. He has even developed a
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On this episode of the ArrayCast - the limits of tacit with 'Pepe' José Mario Quintana
Tacit to the Limit Jose Mario Quintana (Pepe) is the master of tacit J. He has even developed a
Sep 27
Eric Iverson
, …
Gilles Kirouac
5
Sep 26
Elijah Stone
ELijah was a very private person. Other than acknowledging that he will be missed, I don't think
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Elijah Stone
ELijah was a very private person. Other than acknowledging that he will be missed, I don't think
Sep 26
Thomas McGuire
, …
bill lam
3
Sep 23
JSON from LLM response
This is a direct transliteration of the c code, JSON object maps to J rank-2 array of shape n,2 key
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JSON from LLM response
This is a direct transliteration of the c code, JSON object maps to J rank-2 array of shape n,2 key
Sep 23