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Tom Arneson, bill lam2

12/16/25

J android startup file

in the config folder jpath '~config' On Tue, Dec 16, 2025 at 5:43 AM Tom Arneson <tom@

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J android startup file

in the config folder jpath '~config' On Tue, Dec 16, 2025 at 5:43 AM Tom Arneson <tom@

12/16/25

John Dixon, … Henry Rich8

12/15/25

integer overflow in J

In 32-bit J, integers are signed 32-bit. In 64-bit J, they are signed 64-bit. Henry Rich On 12/12/

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integer overflow in J

In 32-bit J, integers are signed 32-bit. In 64-bit J, they are signed 64-bit. Henry Rich On 12/12/

12/15/25

12/15/25

adding startup to J android

what folder should startup.ijs be placed it so ir runs on start up?

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adding startup to J android

what folder should startup.ijs be placed it so ir runs on start up?

12/15/25

Ak, Marcin Żołek2

12/13/25

Syntax documentation: any_name ( vs. any_name(

Thanks for the report. Highlighting any_name( doesn't describe any relevant J syntax, so it is

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Syntax documentation: any_name ( vs. any_name(

Thanks for the report. Highlighting any_name( doesn't describe any relevant J syntax, so it is

12/13/25

12/9/25

J Dynamic Functional Programming meetup

What happened to the J Dynamic Functional Programming meetup today (Tues Dec 9 - 2nd Tuesday)? I

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J Dynamic Functional Programming meetup

What happened to the J Dynamic Functional Programming meetup today (Tues Dec 9 - 2nd Tuesday)? I

12/9/25

Raul Miller, chris burke3

12/8/25

Windows "Security"

The "keep the download" issue is independent of mcafee. The mcafee issue kicks in whenever

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Windows "Security"

The "keep the download" issue is independent of mcafee. The mcafee issue kicks in whenever

12/8/25

David Lambert, Henry Rich2

12/4/25

Is system error truly the intent?

Fixed for next beta. Henry Rich On 12/2/2025 10:35 PM, David Lambert wrote: > I mistakenly used `:

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Is system error truly the intent?

Fixed for next beta. Henry Rich On 12/2/2025 10:35 PM, David Lambert wrote: > I mistakenly used `:

12/4/25

Thomas McGuire, … Pascal Jasmin16

11/26/25

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

11/26/25

Eric John Sargeant

11/25/25

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

11/25/25

John Dixon, … Skip Cave3

11/13/25

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-

11/13/25

bobtherriault, … Raul Miller10

11/12/25

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

11/12/25

Eric John Sargeant, Leopold2

11/12/25

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

11/12/25

Skip Cave, … Devon McCormick3

11/12/25

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

11/12/25

Leopold Perné, bill lam2

11/8/25

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

11/8/25

Remington Furman

11/7/25

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

11/7/25

田天宇, … Arnab Chakraborty3

11/5/25

[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

11/5/25

jaco erasmus, … More Rice9

11/4/25

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

11/4/25

Brian Schott, … Joshua Y18

11/3/25

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)

11/3/25

11/2/25

The j guest server has been updated to the latest JHS. The try: dissect '1+=/i.3' man'

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The j guest server has been updated to the latest JHS. The try: dissect '1+=/i.3' man'

11/2/25

10/30/25

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

10/30/25

robert therriault

10/25/25

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.

10/25/25

Ak, … bill lam7

10/23/25

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.

10/23/25

Daniikk1012, … chris burke8

10/19/25

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

10/19/25

Pascal Jasmin, … Ak20

10/19/25

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

10/19/25

David Lambert, Raul Miller2

10/18/25

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

10/18/25

Robert Cyr, Marcin Żołek2

10/17/25

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

10/17/25

Skip Cave, … Pascal Jasmin8

10/12/25

A full rank J version (2 | 0 +/@:= 4 100 400 |/ ]) 2000+i.10 10 slightly slower than my original

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A full rank J version (2 | 0 +/@:= 4 100 400 |/ ]) 2000+i.10 10 slightly slower than my original

10/12/25

robert therriault

10/11/25

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

10/11/25

Richard Donovan, Pascal Jasmin2

10/10/25

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,

10/10/25

Richard Donovan, … bill lam4

10/6/25

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

10/6/25

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