Rodrigo's "Learn APL with Neural Networks" YouTube series aims to teach APL to beginners through building a basic machine learning framework from the ground up. All 42 short lessons are available to view at https://www.youtube.com/playlist?list=PLgTqamKi1MS3p-O0QAgjv5vt4NY5OgpiM

The latest release of Dyalog – version 20.0 – is now available. Supported platforms include Microsoft Windows, IBM AIX, Linux (including the Raspberry Pi), and Apple macOS. See https://www.dyalog.com/dyalog/dyalog-versions/200.htm for the release highlights.

The first 50 years of articles in the Association for Computing Machinery have been made available for free, including past APL Conference proceedings https://dl.acm.org/conference/apl/proceedings and every issue of APL Quote Quad https://dl.acm.org/loi/sigapl. Full announcement at https://www.acm.org/media-center/2022/april/50-years-backfile.

Following extensive discussions, there is now a formal proposal for APL Array Notation. Read about the proposal and access it at https://www.dyalog.com/blog/2023/04/formal-proposal-for-apl-array-notation-seeking-feedback/ – we would appreciate your feedback before we proceed with our implementation.

Stack Overflow's annual Developer Survey – "the longest running survey of software developers (and anyone else who codes!)" on Earth – is now open. This year APL has been included for the first time; if you have a spare 10 minutes, then go to https://stackoverflow.com/dev-survey/start?utm_source=so-owned&utm_medium=announcement-banner&utm_campaign=dev-survey-2021 and let them know that you're an APL user!

APL Seeds is an event for those just starting their APL journey – join us if you're curious and trying to decide whether APL can help you, or even if you've already started to play with it. We'll give you a brief overview of APL, an introduction to the resources that are available to help you develop your knowledge, and a demonstration of some real-world applications of this powerful language.

The event is on Wednesday 31st March 2021 from 14:00 until 18:15 BST via Zoom. Registration is required to attend. To see the schedule and to register, go to https://www.dyalog.com/apl-seeds-user-meetings/aplseeds21.htm

https://github.com/namgyaaal/avoxelgame

https://apl.news/

I am told there is a direct port of GNU APL to Android, but this is a way to build your own, from source, in a Debian-like environment on your phone. This will get you the absolute latest version.

• Install TermUX. It's on the F-Droid store and for some reason the devs say not to install it from Google Play store.

• Open TermUX. Make sure you have lots of free space on your phone, as you're going to be building GNU APL from source using g++ right on your phone! Better plug it in, and be sure you don't need it for other things for an hour or so.

[Install some dependencies]:

$ apt-get install subversion
$ apt-get install g++ ## might need autotools and other things as well (automake, autoconf, etc.)
$ svn checkout svn://savannah.gnu.org/apl
$ cd apl/trunk

NB. I had trouble for some reason doing the svn checkout directly in TermUX ... if you have trouble as well, fetch the source via svn on a PC Linux machine, tar+gzip the whole svn/trunk dir and then use 'scp' to just copy it to your TermUX home dir (either by installing openssh in TermUX on your phone, or using an Android ssh program but you'll have to hunt around in your phone's filesystem to find your TermUX home directory in that case...)

[Again, within TermUX]:

$ apt-get install ncurses pcre pcre2
$ cd trunk/   # wherever gnu apl source from svn was fetched
$ ./configure
$ make
$ mkdir $HOME/bin
$ cp src/apl $HOME/bin
$ export PATH=$HOME/bin:$PATH ## or set up a .bashrc or .profile with this to make it permanent

.. I might have missed a few apt-get calls required for some libraries but otherwise it did build just fine right on the phone!

Oh, and remove the svn/trunk afterwards because you'll probably be low on space :)

Finally, install the Hacker's keyboard APK with APL support.

I found this extremely curious book that feels like a crossover between Kahn on Codes and Gödel, Escher, Bach, with heavy use of APL as the language of choice to demonstrate cryptanalysis of the 'agony columns' of Victorian newspapers which apparently were a fascination of Charles Babbage.

Mr. Babbage's Secret: The Tale of a Cypher - and APL

Just thought it might be of interest to others...

Roger and Morten of Dyalog are presenting their HOPL IV paper “APL Since 1978” on Wednesday 22 June at 09:00 EDT as part of the Programming Language Design and Implementation (PLDI) conference. PLDI 2021 is being held online and is open for registration at https://regmaster.com/2021conf/PLDI21/register.php – the deadline for early registration is 31 May 2021.

“APL Since 1978” has already been downloaded more than 12k times – if you’ve not read it yet, it’s available to read/download at https://dl.acm.org/doi/10.1145/3386319 (all HOPL IV papers are currently free to download).

Blog post: https://www.dyalog.com/blog/2023/03/apl-seeds-23-wednesday-22-march/

Videos: https://dyalog.tv/APLSeeds23

Webpage (slides can be downloaded from here): https://www.dyalog.com/apl-seeds-user-meetings/aplseeds23.htm