Dyalog

Dyalog v20.0 is expected to be generally available in the week commencing 24 November.

Dyalog v20.0 Available Now

The latest release of Dyalog – version 20.0 – is now available for DSS subscribers. Supported platforms include Microsoft Windows, IBM AIX, Linux (including the Raspberry Pi), and Apple macOS. See www.dyalog.com/dyalog/dyalo... for the release highlights. #dyalog #apl #dyalogapl

APL Quest 2013-6: Home On The Range Write a function which returns the magnitude of the range of a numeric array.

#APLQuest 2013-06: Write a function that returns the magnitude of the range of a numeric array. (see apl.quest/2013/6/ to test your solution and view ours).

#APL #Statistics #RangeCalculation

A free-to-enter competition that could change the way you think...and win you $100.

The new round of the APL Challenge is now open! This quarterly competition is open to everyone but is aimed at newcomers to APL – please spread the word to anyone who might be interested. For more information and to enter, see challenge.dyalog.com

APL Quest 2013-5: Identity Crisis Write a function which produces an n×n identity matrix.

#APLQuest 2013-05: Write a function that produces an n×n identity matrix (see apl.quest/2013/5/ to test your solution and view ours). #APL #Matrix #LinearAlgebra

APL Challenge - 1 Week to go!

Learn APL and compete for one of three $100 prizes! Don't forget to submit your solutions for the 2025.3 round of the APL Challenge – the deadline is tomorrow (31 October) at 09:00 UTC. See challenge.dyalog.com for more information and to enter. #aplchallenge #apl #dyalog #learnapl

APL Quest 2013-4: Keeping Things In Balance Write a function which returns a 1 if the opening and closing parentheses in a character vector are balanced, or a zero otherwise.

#APLQuest 2013-04: Write a function that returns a 1 if the opening and closing parentheses in a character vector are balanced, or a zero otherwise. (see apl.quest/2013/4/ to test your solution and view ours). #APL #Balance #Parenthesis

A free-to-enter competition that could change the way you think...and win you $100 - The APL Challenge - 1 Week to go!

Learn APL and compete for one of three $100 prizes! There's only one week left to enter the 2025.3 round of the APL Challenge. See challenge.dyalog.com for more information and to enter. #aplchallenge #apl #dyalog #learnapl

Dyalog '26 - 12 - 16 October, Eastbourne UK

Save the date! Dyalog ’26 will be in Eastbourne, U.K., 12–16 Oct 2026 (Mon–Fri).
A week of APL workshops, training, and conversations shaping the future of Dyalog. See usermeeting.dyalog.com #dyalog26 #dyalog #apl

Andrea Plovgaard Frederiksen

Our latest blog post is the next in our #EmployeeSpotlight series, which celebrates members of Team Dyalog as they reach important milestones. Andrea has reached his first year anniversary with Dyalog Ltd, and www.dyalog.com/blog/2025/10... looks at how she's found her first twelve months.

DYNA Fall 2025 - Materials Now Available

DYNA Fall 2025 took place in New York City at the end of September. Materials from the presentations and workshops are now available to download – see www.dyalog.com/north-americ... #dyna #dyalog #apl

APL Quest 2013-3: What Is In a Word Write a function which returns the number of words in the given character scalar or vector.

#APLQuest 2013-03: Write a function that returns the number of words in the given character scalar or vector (see apl.quest/2013/3/ to test your solution and view ours). #APL #WordCount #TextProcessing

DYNA Fall 2025 - Highlights and Reflections

DYNA Fall 2025 took place in New York City at the end of September. Our latest blog post – www.dyalog.com/blog/2025/10... – is our review of the presentations, workshops, and community building that took place. #dyna #dyalog #apl

APL Quest 2013-2: Making The Grade Write a function which returns the percent (from 0 to 100) of passing (65 or higher) grades in a vector of grades.

#APLQuest 2013-02: Write a function that returns the percent (from 0 to 100) of passing (65 or higher) grades in a vector of grades (see apl.quest/2013/2/ to test your solution and view ours). #APL #DataAnalysis #Percentages

Busy solving Rust problems but now obsessed with APL. I guess time to implement APL primitives in Rust?

APL Quest 2013-1: Seems a Bit Odd To Me Write a function to produce a vector of the first n odd numbers.

Our #APLMonday series is changing! From this week, we will be posting questions from #APLQuest. This week's question is 2013-01: Write a function to produce a vector of the first n odd numbers (see apl.quest/2013/1/ to test your solution and view ours). #APL #OddNumbers #SequenceGeneration

Glad to hear you enjoyed DYNA! Aaron loves questions so don't worry :) We really hope to see you again at another Dyalog event. A little bird told me the next one will be announced within a couple of weeks. Keep in touch Nathaniel!

Finished up DYNA Fall 2025, had an absolute blast. The rabbit hole of array programming just goes deeper and deeper, but honestly I'd be disappointed if it didn't. Thanks to everyone who put up with my constant stream of questions (especially Aaron), and hope to see you all again soon.

And a very special thanks to @codereport.bsky.social for introducing me to this paradigm in the first place. Not sure how many people end up in the ADSP -> ArrayCast -> Dyalog conference pipeline, but I highly recommend it
@dyalog.bsky.social #arrayprogramming #apl

APLearn - The Winning APL Forge 2025 Project by Borna Ahmadzadeh

Our latest blog post is by the 2025 APL Forge winner, Borna Ahmadzadeh. His introduction to his efforts and prize-winning APLearn submission – www.dyalog.com/blog/2025/10... – are a tantalising preview of what we can expect from his Dyalog '26 presentation! #aplforge #apl #dyalog #programming

A free-to-enter competition that could change the way you think...and win you $100 challenge.dyalog.com

Learn APL and compete for one of three $100 prizes! There's only one month left to enter the 2025.3 round of the APL Challenge. See challenge.dyalog.com for more information and to enter.

#aplchallenge #learnapl #apl

Dyalog NA User Meeting starts tomorrow! Excited to meet everyone and learn about APL #APL #arraylang #NYC @dyalog.bsky.social

DYNA Fall 2025 starts today!

DYNA Fall 2025 starts today! Morten Kromberg and other members of Team Dyalog will be joined by a capacity gathering of North American APLers in New York city for two days of presentations, workshops, and community building. Highlights and materials to follow!

#DYNA #APL #NewYork #TechConference

What does the following monadic array property function determine when given any array?

This one is simple #APLMonday #APL

APL Forge 2025 Winner - Borna Ahmadzadeh

Announcing the winner of the 2025 APL Forge – Borna Ahmadzadeh. Borna will present his winning work at Dyalog '26, but you can meet him before then at www.dyalog.com/news/164/420... #aplforge #apl #dyalog #programming

What does the following dyadic structural function compute when given vector arguments? ∘.{⍺⍵}

All good answers to this one are valid. #APLMonday #Dyalog #APL

Last chance to register for DYNA Fall 2025

Last chance to register for DYNA Fall 2025 (Sunday 21 September at 23:59 UTC). Register now at dyna.dyalog.com to secure your place to join us in New York city for two days of APL presentations, workshops, and community building (29-30 September 2025). #DYNS #APL #TechConference #NewYork

Lessons Learned when Converting from APL+Win to Dyalog APL - DYNA Fall 2025 METSIM® is the leading chemical and mineral processing plant simulation software used by engineers and operators around the globe. Since 1982, all development has taken place using APL+Win, which serv...

Alex Holtzapple from METSIM will be presenting 'Lessons Learned when Converting from APL+Win to Dyalog APL'. One of 11 presentations on Day 1 of DYNA Fall 2025 in New York, 29 September. Free to attend. dyna.dyalog.com/presentation... #APL #TechConference #NewYork #LegacyCode

What does the following dyadic selection function do when given an integer scalar as left argument and any vector as right argument? (⊃⌽)

Pick your answer to this one carefully... #APLMonday #Dyalog #APL

Registration closes in 1 week for DYNA Fall 2025

You have 1 week remaining to register for DYNA Fall 2025. Register now at dyna.dyalog.com to secure your place to join us in New York city for two days of APL presentations, workshops, and community building (29-30 September 2025). #DYNA #APL #TechConference #NewYork