J-P,
I cannot confirm your error.
(1 1,:_2 _2) <;._3 i. 3 3
┌───┬─┐
│4 3│4│
│1 0│1│
├───┼─┤
│7 6│7│
│4 3│4│
└───┴─┘
JVERSION
Engine: j903/j64/darwin
Release-b: commercial/2022-01-28T04:11:24
Library: 9.03.08
Platform: Darwin 64
Installer: J903 install
InstallPath: /users/brian/j903
Contact: www.jsoftware.com
But, I can confirm the following.
(1 1,: 2 2) <@:(|."1)@|.;._3 i. 3 3
┌───┬───┐
│4 3│5 4│
│1 0│2 1│
├───┼───┤
│7 6│8 7│
│4 3│5 4│
└───┴───┘
On Fri, Jun 16, 2023 at 2:04 PM Jan-Pieter Jacobs <
janpieter.jac...@gmail.com> wrote:
> Hi,
> I think I have found a bug in J 9.4 that appears to be present for a while
> (e.g. also in the J Playground):
>
> (1 1,:_2 2) <;._3 i. 3 3 NB. rows reversed
> +---+---+
> |3 4|4 5|
> |0 1|1 2|
> +---+---+
> |6 7|7 8|
> |3 4|4 5|
> +---+---+
>
> (1 1,:2 _2) <;._3 i. 3 3 NB. columns reversed
> +---+---+
> |1 0|2 1|
> |4 3|5 4|
> +---+---+
> |4 3|5 4|
> |7 6|8 7|
> +---+---+
>
> (1 1,:_2 _2) <;._3 i. 3 3 NB. rows and columns reversed?
> |limit error, executing dyad <;._3
> |a system limit was exceeded
> | (1 1,:_2 _2) <;._3 i.3 3
> JVERSION
> Engine: j9.4.1/j64arm/android
> Build: commercial/2023-03-02T04:40:32/clang-14-0-7/SLEEF=1
> Library: 9.4.22
> J Android: 1.4.60/13/33
> Platform: Android 64 (arm64-v8a)
> Installer: unknown
> InstallPath: /storage/emulated/0/Android/data/com.jsoftware.j.android/files
> Contact: www.jsoftware.com
>
> J9.5 beta 3 gives the same result (limit error)
>
> In the J playground, that last one somehow eats rows/columns at the edges:
>
> https://jsoftware.github.io/j-playground/bin/html2/#code=%281%201%2C%3A_2%20_2%29%20%3C%3B._3%20i.%203%203
>
> I expect rather this result:
>
> (1 1,: 2 2) <@:(|."1)@|.;._3 i. 3 3
> +---+---+
> |4 3|5 4|
> |1 0|2 1|
> +---+---+
> |7 6|8 7|
> |4 3|5 4|
> +---+---+
>
>
> Jan-Pieter
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
--
(B=) <-----my sig
Brian Schott
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
