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Dyalog ’19: Sunday 8 September
Welcome back This year once again the Dyalog User Meeting returns to beautiful Elsinore in Denmark. The historic seaside city is home to Kronborg castle, famously immortalised in Shakespeare’s Hamlet – and Kromberg castle, where Morten lives. We are holding the user meeting at Konventum in the western outskirts of Elsinore. It features winding corridors […]
Postcard from Dyalog ’14 – Tuesday
The weather predictions have been spot on so far; it’s been another lovely sunny day at Eastbourne – here was the scene this morning at sunrise: It was another busy day of presentations – read on for some highlights! After dinner tonight the evening will be rounded off with Morten and his Dancing ‘Bots – […]
Dyalog ’15 – An Unexpected Viking Challenge
After many months of planning and preparation it was finally time to head from the UK to Sicily for Dyalog ’15. Sun, sea and an excellent conference facility were awaiting us at the Atahotel Naxos Beach in Giardini Naxos and this year, because it would be very hot, we had decided to forgo the traditional […]
Building a Web Application with MiServer
One of Sunday’s tracks was Brian Becker’s engaging workshop on MiServer 3.0 – the newest version of Dyalog’s APL-based web application framework that allows you to develop a cross platform application for stand-alone use or delivery via the web. The motto of MiServer is that everyone who can develop an APL application should also be able to make […]
Postcard from Dyalog ’14 – Thursday
This is the last day of Dyalog ’14 so this is the last of six daily postcards from Eastbourne – we hope you have enjoyed getting a flavour of things as they happened. We expect there will be more discussion to come once we’re back and rested! Last Night’s Banquet Yesterday culminated in the traditional […]
DYNA Fall 2025 – A Review
DYNA Fall 2025 brought together APL enthusiasts, customers, and Dyalog Ltd staff for two days of presentations and workshops in New York City. Attendance was strong, energy was high, and the sessions showcased both the maturity and momentum of the Dyalog ecosystem. The event took place in the Jay Suites Conference Center at the end of […]
Snapshot blog from the last day at Dyalog’16 in Glasgow
#Dyalog16 – Vibeke Ulmann So we have come to the last blog from this year’s Dyalog User Conference. This is going to be a short one – as I can’t possibly do justice in words to some of the presentations we had Thursday morning. Gitte Christensen started off the morning by giving us a run […]
FinnAPL Forest Seminar 2016
Finns probably have better reasons to look forward to spring more than most of us: not only does it get much easier to keep that hole in the ice open, it is time for the annual FinnAPL Forest Seminar! This year, just under 20 of us gathered for two days (Thursday March 10th and Friday […]
Spring 2015 Dyalog Travelogue (An American Tale: Dyalog Goes West)
Concluding Morten and Gitte’s whistlestop tour round Europe before heading to the US (see parts 1 and 2) On Saturday afternoon we passed through London’s Heathrow airport for the third time in 5 days, this time continuing west to JFK, bringing the total for the week to 8,943km plus 300-odd in 3 different cars, 220 […]
Cholesky Decomposition
Morten was visiting Dyalog clients and forwarded a request: Can we have the Cholesky decomposition? If A is a Hermitian, positive-definite matrix, its Cholesky decomposition [0] is a lower-triangular matrix L such that A ≡ L +.× +⍉L. The matrix L is a sort of “square root” of the matrix A. For example: ⎕io←0 ⋄ […]
Postcard from Dyalog ’14 – Wednesday
It’s been another busy day at Dyalog ’14; there’s lots to write about and little time to do it! Winners of the International APL Programming Contest 2014 This year, 710 registrations were received for the annual APL Programming Contest and the two main winners – Emil Bremer Orloff, student entrant from Aarhus Universitet, and Iryna […]
APL – Coming to a Robot Near You
APL on the C3Pi One of the biggest joys of being the CTO of Dyalog is that you get to write code to help evaluate prototypes of proposed language features, or new tools and tutorials that we are planning to make available. This past week has been one of the most exciting for a very […]
JSM 2025 – Introducing APL and TamStat to Statisticians
Joint Statistical Meetings (JSM) is an annual conference hosted by the American Statistical Association. Last month, Josh, Martina, and I attended JSM 2025 in Nashville, Tennessee, with Professor Stephen Mansour. Josh, Martina, and I were exhibitors, and hosted a stall in the exposition hall alongside other organisations. Steve exhibited TamStat (a free-to-use statistical package written in Dyalog […]
Raspberry Pi – Experimenting with a Robot for Practical Applications
The first time I heard the term Raspberry Pi – in the beginning of 2012 – I immediately went for a plate and a fork – I LOVE Raspberries! Much to my surprise what was served up was not a lovely piece of pie with lots of cream and raspberries, but a small electronics board […]
Dyalog ’23 Day 1: Welcome to Denmark!
We have returned to the (very windy this time!) shores of Elsinore in Denmark for our annual user meeting, Dyalog ’23! Today saw the usual range workshops in which everybody could get involved learning the intricacies of a range of topics with the support of experts from Team Dyalog and friends. In the morning, users […]
Dyalog ’22 Day 2: Welcome Back to User Meetings
Links to recordings from this day of the user meeting are at the bottom of this post. We were welcomed to the 2nd day of the user meeting by managing director (CEO) Gitte Christensen. Everybody could appreciate the emotion and sentiment when she noted the distinct “APL Hum” apparent in the atmosphere at this year’s […]
Dyalog ’22 Day 1: Welcome to Sunny Olhão!
Arriving to meet the warm sea air is already a refreshing change as this year’s long, hot summer started to close in the weeks leading up to this year’s user meeting. Of course, for some with less far to travel, the warmth is a familiar comfort. As delegates arrived on Sunday night we were treated […]
Not All Heroes Wear Capes
On Friday 15 October, the SERV S&L was presented with The Queen’s Award for Voluntary Service by the Lord Lieutenant of Surrey. Geoff Streeter was one of 20 volunteer SERV S&L members who attended. What Is SERV S&L? SERV S&L (Service by Emergency Rider Volunteers for Surrey and London) are a charity organisation, made up […]
2019 APL Problem Solving Competition: Phase I Problems Sample Solutions
The following are my attempts at the Phase I problems of the 2019 APL Problem Solving Competition. There are not necessarily “right answers” as personal style and taste come into play. More explanation of the code is provided here than common practice. All solutions pass all the tests specified in the official problem description. 1. Chunky Monkey […]
Dyalog ’19: Thursday 12 September
Dyalog Pictures Ltd? After a wonderful banquet dinner bonding with fellow teammates of last night’s Viking Challenge, we were invited to the Jorns Auditorium for the world premiere of our movies from earlier in the day. The screening and awards show was a roaring success with everybody being surprised and thrilled at the quality of […]
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