Leaping not looping

posted 18 Apr 2016, 14:10 by Stephen Taylor

Another post on the Array Thinking blog attempts to tease out what is distinctive about array-oriented solutions. This time, testing whether a year is a leap year.

Command Ivy – a new APL interpreter

posted 18 Apr 2016, 14:04 by Stephen Taylor

A new APL interpreter project, built by Rob Pike of Unix fame. 

“a plaything, and a work in progress”

His interpreter is called "Ivy", uses ASCII characters, and is written in Go. It nicely leverages Go’s BigNum library, making it possible to work with very large integers and arrays.

Dyalog North American User Meeting 2016 – DYNA16

posted 16 Feb 2016, 14:23 by Stephen Taylor

Dyalog invites users, partners and all other interested parties to our 2016 North American Dyalog User Meeting, to be held at the Crowne Plaza in Princeton, NJ on 18-19 April 2016. 

The preliminary programme can be found at 

Costs are $500 for both meeting days (or $250 for just one day) and overnight accommodation is available at $159+taxes per night. Further details of costs and what is included along with a registration form can be found on our website

Note: Dyalog16 will be taking place from 9-13 October in Glasgow – full details will be announced soon!

Let it snow

posted 22 Dec 2015, 02:35 by Stephen Taylor   [ updated 22 Dec 2015, 02:36 ]

Snow crash
A little Christmas gift from the Array Thinking blog: how to make snow. Also on YouTube

Dyalog announces 2016 meetings

posted 16 Dec 2015, 13:24 by Stephen Taylor

Dyalog has announced the dates and locations for its 2016 user meetings: 
Details of planned content and how to register will follow once the information is available.

APL Germany Fall Meeting 16-17 Nov

posted 13 Oct 2015, 09:03 by Stephen Taylor

Beginning Monday 16:11. at 09:30 

End Tue 17:11. at 16:00 

We have still free slot's on the agenda. If someone has an idea for a talk or presentation he or she can feel free to contact me. We will accept of course also short presentations.

The meeting will be at the University of Applied Sciences in Erfurt, Altonaer Straße 25

- Monday Building 1 Romm 7.2.15 und Tuesday Building 1, Room 1.2.22

- local organisation Ms. Jana Großner, Tel: +49 361 6700514

Hotelrooms at Hotel Am Kaisersaal , old Town of Erfurt, Futterstraße 8, Telefon +49 361 65 8560
25 Rooms are reserved

- Prices: € 89,00 / Singleroom / Night
€ 109,00 / Doubleroom / Night

- Hotel Booking please until 1.11.2015 at the Hotel, keyword "APL"

Distance Hotel to University 1 km ca. 15 Min

Coffee and Lunchat the University available

Sunday evening get together , old Town of Erfurt, Restaurant Christoffel Michaelisstr. 41,

Monday evening meeting , old Town of . Naumburgischer Keller, Michaelisstr. 49,

An Introduction to Neural Networks with kdb+

posted 2 Oct 2015, 15:26 by Stephen Taylor

Neural network
James Neill writes about implementing neural networks in kdb+ in this article from the q for Gods series. Unsurprisingly, the code is quite short… 

Fear and Loathing with APL

posted 2 Oct 2015, 15:18 by Stephen Taylor

Functional programmer Yan Cui blogs at about his first venture into APL

Videos online from Dyalog 15

posted 2 Oct 2015, 15:08 by Stephen Taylor   [ updated 2 Oct 2015, 15:10 ]

Videos and slides from Dyalog 15 in Sicily last month have started appearing online

APL Germany Fall meeting, Erfurt, 16-17 Nov 2015

posted 2 Oct 2015, 14:47 by Stephen Taylor   [ updated 2 Oct 2015, 15:09 ]

The next meeting will be held on 16 and 17 November at the University of Applied Sciences in Erfurt.

Contact Bernd Geißelhardt,

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