Starred posts

Adám

Tue 18:52

@Rosario It will use a least squares fit if the system is over-specified, and error if the system either is under-specified or has no solution.

Adám

Feb 4 21:32

 Range←{⎕IO←0 ⋄ (a n b)←⍵ ⎕VGET('from' 0)('step' 1)'to' ⋄ a+n×⍳⌊n÷⍨b-a}

sloorush

Jan 31 10:26

Hi everyone!
Dyalog is applying for Google Summer of Code 2025 (https://summerofcode.withgoogle.com/). It is a program to promote open source software development where organisations with opensource projects apply and receive contributors from the platform who work on the project and they get a stipend.

For GSoC, Dyalog needs to make an idea list of projects we think will be good for contributors to work on. We would appreciate if the community would also take a look at the projects we have chosen, give their opinions on things that should be added or subtracted or changed from these ideas…

Adám

Dec 8, 2024 10:47

@JohannesHoff (post APL code in separate messages and press Ctrl+k before posting; SE chat will visually merge your messages and format the code properly)

RubenVerg

Nov 30, 2024 16:46

TinyAPL 0.11.0.0 just released! The biggest addition are dictionaries, which are pretty interesting, but there's lots of other stuff. Like always there's an accompanying blog post.

AndyS

Sep 3, 2024 14:26

OK OK so I was being somewhat optimistic with my estimate of when we’d upload new images. However, it has finally happened, so you can download the latest 18.2 and 19.0 images from https://www.dyalog.com/download-zone.htm or, for the Raspberry Pi, from https://packages.dyalog.com/. We’ve also updated the dyalog/dyalog Docker images on https://hub.docker.com.

The installation images in the Download Zone are exactly the same files as are on my.dyalog.com.

Adám

Mar 13, 2023 06:16

I should have called it AskAdam, then maybe people would remember!

6

RubenVerg

Feb 14, 2024 11:10

I can't remember if I already mentioned that I moved omnibar to omnibar.rubenverg.com

2

Adám

Dec 17, 2020 21:09

We need a free open source implementation of a rationalised APL, built from the ground up upon a modern environment.

12

Adám

May 1, 2024 13:28

Announcement: APL Challenge 2024.2 is now open – to everyone but aimed at newcomers to APL – please spread the word to anyone who might be interested.

Jay Foad

Dec 14, 2022 09:33

Finally! All that work on TAO paid off.

4

xpqz

Aug 2, 2021 08:16

Announcement: As the the Dyalog comp has now closed, I've just published my intro to APL book: xpqz.github.io/learnapl/intro.html. If you find any errors, I'd appreciate you raising an issue in github.com/xpqz/learnapl. My thanks to @RGS and @rak1507 for reviewing -- any remaining errors are 100% mine.

8

LdBeth

Jul 28, 2023 18:29

It seems APL was the first programming language that introduced trig functions for complex numbers dl.acm.org/doi/10.1145/390007.805368

2

Razetime

Nov 5, 2021 05:27

xpqz's book is good

6

Adám

May 16, 2021 11:15

Announcement: A new podcast series, The Array Cast, has launched with its first episode, Why We Like Array Languages. Expect an episode every 2 weeks.

7

Adám

Feb 6, 2024 12:26

@RubenVerg Except APLX, which is real ;-)

Adám

Jul 22, 2021 20:18

@dzaima In unrelated news: CTO watched my demo of your IDE, and now it looks like we'll start making Android builds so you can get a native interpreter to play with for it.

6

Razetime

Dec 10, 2021 14:38

I always set ⎕IO to |ψ〉 = α|0〉 + β|1〉

5

Adám

Feb 12, 2021 15:30

Announcement: 2021 round of APL Problem Solving Competition has begun. Referral awards offered.

7

gamma_delta

Oct 31, 2021 23:02

5

Adám

Dec 29, 2023 13:25

I'd expect it to be negligible. The length of an array is directly readable from its memory pocket.

Adám

Mar 25, 2022 14:39

Presenting: @xpqz's blog post The 2021 APL Problem Solving Competition: Phase I – Best of Breed

4

Adám

Dec 20, 2023 23:26

@Fmbalbuena Why not 2÷⍨×⍨+⊢?

rabbitgrowth

Dec 20, 2023 03:54

R A←0 1
workflows parts←(×⍤≢¨⊆⊢)⊃⎕NGET'19.txt'1
(⍎'{' ',' '[a-z](?=[,}])'⎕R'←{' '⋄' '&⍵')¨workflows
⎕←+/(⍎'⋄+/x m a s×in⍬',⍨'[{}]' ',' '='⎕R'' '⋄' '←')¨parts

xpqz

Dec 19, 2023 09:34

@Matthew In case you haven’t found it, you may find xpqz.github.io/learnapl useful.

RikedyP

Apr 1, 2023 07:25

Announcement: New language extension: flip individual scalars in v19.0 - read about it in our latest blog post dyalog.com/blog/2023/04/…

2

Adám

May 7, 2020 13:05

Announcement: Dyalog's APL Problem Solving Competition is now open for 2020!

8

RikedyP

Dec 4, 2023 12:07

more useful tips: dyalog.com/getting-started/tips.htm

RikedyP

Dec 4, 2023 12:06

]box on

Ven

Dec 3, 2023 17:23

eighteen is a trap

Adám

Mar 6, 2023 14:07

Announcement: 2023 APL Problem Solving Competition is now live! Cash and referral awards offered.

2

Fredrik Niemelä

Mar 4, 2023 18:55

@Adám APL is now available on open.kattis.com . Try it out and let us know if there are any issues?

2

Adám

Feb 5, 2023 23:04

Announcement: The potential Programming Language Design site on Stack Exchange

2

Adám

Oct 29, 2021 20:32

Announcement: rogerhui.rip

4

Adám

May 25, 2022 11:29

Woo, APLcart just passed to 3500 entries' mark!

3

Adám

May 24, 2022 20:17

Even more APL merch, including caps, travel cups, badges, etc. now available.

3

Adám

Oct 7, 2021 15:00

Announcement: Registration for Dyalog '21 is now open.

4

Romilly Cocking

Jan 5, 2023 10:37

I've just published an APL implementation of the yard-sale model (a model that predicts that the rich will get richer while the poor get poorer).

https://github.com/romilly/yard-sale

I need to tidy up the notebooks but background and essential code are in the README.
I'd love some feedback.

2

Adám

Sep 3, 2020 10:14

Announcement: We're about to launch a site that verifies solutions to the APL Programming Competitions' phase I problems for the last few years. Let me know if you want to test the site (you'll probably have to solve the problems) and/or write some APL code to implement lenient checking of user solutions.

6

ngn

Feb 21, 2021 15:49

to comply with the APL Implementations Act of 2021, i kindly ask all implementers to fill in this form

5

Marshall

Feb 4, 2021 15:06

@KamilaSzewczyk Use the backspace key?

5

xpqz

Jan 28, 2021 15:30

Observation: rank ⍤ is amazing. Wish I'd taken the time from day one to really understand it properly.

5

Morten Kromberg

Jan 25, 2021 19:07

If by some misfortune or act of stupidity we manage to screw it up, I will do what I can to open source it before we put out the lights :-).

5

diogotito

Jan 18, 2021 23:42

@rak1507 Oh wait arrays start from 1. Blasphemy!

5

Adám

Mar 23, 2022 11:40

Announcement: Dyalog 18.2 has been released!

3

Fmbalbuena

Mar 10, 2022 22:22

I forgot something

3

Adám

Jun 10, 2020 11:24

Announcement: Dyalog APL Version 18.0 is now released!

6

xpqz

Nov 18, 2022 08:46

2

Adám

Jul 19, 2021 14:20

Blog post: Code Golf: Generating Empty Arrays

4

Marshall

Jun 5, 2020 16:41

Hi everyone! So the news this week is that I have now left Dyalog. I've started working on implementing an APL-like language with new symbols and semantics and have plans for another array language as well. More on both later.

6

The APL Orchard

The APL Orchard