- Three Principles of Coding Clarity
- Style and Literacy in APL
- Remarks on Style (in q)
- A Programming Language and its descendants (Reddit)
- Journal of J: January 2019 issue
- 60 lines of C inspired by 6 lines of APL: PDF from December 1988 issue of "Computer Language"
- Bayesian Links
- Run J in a browser!
- Run APL in your browser!
- News on the R language
- Matlab Central - articles on Matlab
- The APL Movie
Upcoming APL & Functional Programming Events
Postponed: British APL Association Spring mini-conference - Friday, March 27th, 2020Due to the Coronavirus outbreak, the British APL Association is postponing the Spring mini-Conference that was to take place on 27th March 2020. A number of alternatives have been considered and for the moment the most likely action will be to merge this event with the forthcoming AGM on May 29 2020. However, this later event is itself subject to review and developing events will influence what we eventually do. Please check the BAA website for more information.
NYCJUG Meeting - Tuesday, April 14th, 2020The New York City J Users Group will hold its regular monthly meeting on Tuesday, April 14th. If the state of emergency has waned, we will meet at 6:30 pm, upstairs at Old Town on East 18th Street in New York, New York; if not, we are exploring alternatives using video-conferencing. Take a look at our meeting notes and our Meetup page.
Canceled: Conference of GSE APL Working Group and APL-Germany, May 4-5, 2020The joint spring conference of the GSE APL Working Group and APL-Germany is canceled.
Dyalog '20, October 11-15, 2020The annual Dyalog conference will be held this year in Olhão, Portugal. Dyalog is accepting requests to give a presentation. Email Dyalog with your proposal. More information can be found here.
ICCAPFP 2021, February 14-15, 2021The International Research Conference, at ICCAPFP 2021, the 23rd International Conference on Computer-Assisted Proof and Functional Programming, aims to bring together leading academic scientists and scholarly researchers to share their experiences and research results on all aspects of computer-assisted proof and functional programming. The deadline for abstracts and full-text paper submission is November 15, 2020. The conference will be held in London, UK.
Lambda World, 2021This event is planned to be held in Seattle, Washington, USA - more information here.
Various Functional Programming EventsLook here for "the ultimate", though it is Clojure-centric, list of upcoming meetings for functional programming languages.
Recent Events Relevant to APL and Other Functional Languages
NYCJUG Meeting - Tuesday, March 10th, 2020The New York City J Users Group held its regular monthly meeting on Tuesday, March 10th, at 6:30 pm, at Old Town on East 18th Street in New York, New York.
The Partial Conference - November 30th, 2019PARTIAL :: CONF took place in Sofia, Bulgaria - more information here.
APL meeting in Bingen, Germany, November 4th-5th, 2019This meeting was held over two days in Bingen, Germany and featured 17 talks on various aspects of APL.
Lambda Days, October 17-18 2019One of the largest functional programming events in Europe was held in Cadiz, Spain - more information here.
The Future of the Web - October 15-19, 2019A conference in Braga, Portugal - more information here.
Array Oriented Functional Programming In APL - September 17, 2019Morten Kromberg, CXO of Dyalog, spoke in Poughkeepsie, NY at Marist College, Hancock Center (Building 14 on map), Room 2023, on Tuesday, September 17th. He expounded on Dyalog APL, a modern, array-first, multi-paradigm programming language, which supports functional, object-oriented and imperative programming. The focus was on how the language allows people to easily implement good ideas and how it makes extremely efficient use of modern hardware. The talk is under the auspices of ACM Poughkeepsie. More information can be found here.
StrangeLoop - September 12-14 2019This conference was held at the Stifel Theatre in St. Louis, Missouri - more information here.
Tracy Harms spoke about J at this conference in 2014, so this may be a receptive audience for APL ideas.
ICFP - Sunday, August 18th - Friday August 23rd, 2019The ACM SIGPLAN International Conference on Functional Programming conference takes place in Berlin, Germany - more information here.
APL Bay Area Users' Group - Monday, August 12th, 2019The APL Bay Area Users' Group (The Northern California SIGAPL of the ACM) met on Monday, 12 August 2019, 6:30 p.m. at the Asian Box restaurant at 142 Castro St., Mountain View, CA 94041, phone 650:584-3947.
Officers were elected.
BuzzConf - June 13th, 2019This conference, by developers for developers, was held at 2019 Ciudad Cultural Konex, Balvanera, Argentina - more information here.
Gamle Museet Konferanse og Selskapslokaler - May 8-9, 2019This functional programming conference was held in Oslo, Norway - more information here.
BOB 2019 Konfernz - March 22nd, 2019If you are interested in technologies beyond the mainstream, that are a pleasure to use, and effective at getting the job done? If so, you should have gone to BOB in Berlin, Germany. The conference page here does not seem to point to any follow-up information.
Lambda Days, February 21-22 2019This conference on functional programming was held in Krakow, Poland. Videos of talks are available here.
Dyalog on the Road - Thursday, February 7th, 2019We welcomed Morten Kromberg, CXO of Dyalog APL, to the Empire State for a talk about Dyalog APL. This meeting was at Alley, 119 W 24th Street (between 6th and 7th avenues), New York. He discussed exciting features of Dyalog APL such as its seamless multi-platform compatibility as well as its compatibility with many standard programming tools and environments.
f(by) Conference 2019, January 26, 2019This fifth conference on functional programming was held in Minsk, Belarus. There were two tracks: one for practical talks on functional programming successes and usage, and other for theoretical talks on programming language theory, mathematics, new things in functional programming languages.
Functional Conf - December 12-16th, 2018Asia's Premier Functional Programming Conference, was held at the Hotel LaliT Ashok, Bengaluru.
GSE/APL Germany Autumn Conference 2018 - November 26th-27thThe autumn conference of APL Germany took place together with the GSE conference on November 26th-27th on the premises of dpc, Prinzenstraße 2, 42697 Solingen, Germany. Here is the conference program.
Mesh: a spreadsheet programmable with an array languageThis code editor that feels like a spreadsheet supports APL and K. There is a video introduction to Mesh using Shakti.
Minimal introduction to KHere is a very brief introduction to the K language.
New version of K available from ShaktiA new and different version of K, called "K9", is available for download from Shakti. It currently is available for MacOS and Linux.
J version 9.01 ReleasedThe latest stable version of the J language, 9.01, is freely downloadable. This version enhances gerunds of the form m"v (where "m" is a gerund and "v" a verb) to allow application of different verbs to different cells of a noun. Look here for more information. J is available for these platforms:
Dyalog Version 17.1 Now AvailableVersion 17.1 of Dyalog APL is available on all supported platforms and will features full support for Mac OS as well as a cross-platform platform graphical development environment. Look here for more details.
Dyalog APL Problem Solving Competition: 2019 WinnersThe 2019 Dyalog APL Problem Solving Competition winners have been announced.
APL+Win C# Script Engine ReleasedThis latest 19.0 version of the APL2000 product line makes available this C# interface to subscribers. See this for more details.
Run APL in a browser and use APL in web-page developmentPaul L. Jackson's browser-based APL can be installed locally and used to design, display, and test web pages from the APL development environment.
John Scholes, in memoriamWe are sad to report that the inimitable John Scholes passed away recently. He is remembered fondly by the APL community, not the least because of his many engaging appearances, some of which are available online, particularly his Plea for Simplicity, his tutorial on how to deal with distractions while programming, and Social Skills for Programmers.
Dyalog 2018 VideosVideos of some of the talks at Dyalog '18, held in Belfast, Northern Ireland, from October 28th through November 1st, are available here.
NARS2000 Adds New Numeric TypesThe latest NARS2000 release adds numeric types: hypercomplex numbers including complex, quaternions, and octonions where each may have its coordinates all in fixed precision (64-bit) integer or floating point, or multiple-precision rational or multiple-precision floating point.
Dick Bowman, in memoriamMore sad news: Dick Bowman passed away this August. Dick was a an independent APL consultant for over 25 years. He was also active in the British APL Association and a frequent contributor to Vector Magazine. He is survived by his wife Rosalind.
Lynne Shaw, in memoriamIt is with sorrow that we note the passing of Lynne Shaw, a long-time member of the APL community. Lynne was the winner of the Kenneth E. Iverson Award for Outstanding Contribution to APL in the year 2000. She edited many of the proceedings of the international APL conferences and was active in the community in many other ways.
Morten Kromberg's Dyalog APL Talk at GoogleMorton Kromberg, CTO of Dyalog APL, gave a talk at Google on June 16, 2015. The video is available here.
New Release of Eli: Compiled APL"ELI", a system for programming with arrays, with most of the functionality of ISO APL but with extended data types like non-homogenous arrays, complex numbers, and temporal data, is freely available on Windows, Linux, and Mac OS. The language has a compiler as well as an interpreter and SQL statements. Visit the Eli homepage and take a look at this article in Vector for more details.
Gnu Open-source APL ReleasedGNU APL is a free interpreter for which the source code is available. It is written and is being maintained by Jürgen Sauermann under a Gnu license. It is aimed at a Linux environment but compiles under Cygwin for a Windows environment.
Waterloo APL ArchiveThe Waterloo APL Archive has been resurrected here. These links have not been tested thoroughly, so please report any problems to us.
Graphical J Sentence AnalyzerAnnouncing a graphical sentence debugger for J: wouldn't it be great if you could actually see how a sentence executes? Instead of puzzling over some expressions like this:
you can see a picture like this:
z =. 100 200 300 +/ z + i. 3 3 609 612 615