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Announcing Dyalog v19.4.1

Although the core language primitives (also known as squiggles) are closest to our hearts, we spend a lot of time creating interfaces to external components… Read

Numeric Case Conversion

Dyalog version 18.0, released in June 2020, introduced the Case Convert system function ⎕C. It was a replacement for the long-lived (since version 15.0, from… Read

Extending Structural Functions to Scalars

Traditionally, the set of monadic reversing or reflecting primitives, Reverse-First (⊖), Transpose (⍉), and Reverse (⌽) apply to entire arrays and are… Read

Dyalog Version 18.4.1

During the recent APL Seeds ’22 meeting, it was suggested that we introduce keywords that could be used as an alternative to APL symbols. Several… Read

Speed versus Accuracy: the User’s Choice

At Dyalog we have long striven for both correctness and high performance in our implementation. However, our views on this matter have recently undergone an… Read

Permuting Internal Letters

Friday Afternoon It’s something of a custom in Dyalog to send a “fun” e-mail to the group on Friday afternoons. My gambit for this past… Read

Krypto

In the 2016 Year Game, the task was to generate the numbers 0 to 100 using APL primitives and the digits 2 0 1 6 in that order. For example, 20=16 ×2016… Read

Beauty and the Beast

Finally, the last accessory I ordered for my Raspberry Pi Zero (that’s the little red thing behind my keyboard) has arrived – an Acer 43″… Read

The 2016 Year Game

Our 2016 Year Game was launched in January 2016 and ran until the end of the year. The idea was simple – to find APL expressions involving exactly the digits… Read

It’s APL…but not as we know it!

by the Dyalog Duck As the party behind Dyalog’s Twitter account I often search our feed for #APL or just APL to see if anyone is talking about us or APL… Read

APL Puns

In the Beginning ⌊ floor ⌈ ceiling ⍟ log ⌊ and ⌈ were punnish when the notation was introduced in 1962. They have long since gone mainstream, used… Read

Simply A-maze-ing

One of many things I like about APL is that it’s fun to use for recreational computing. I will frequently happen upon an interesting problem, puzzle, or… Read
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Technical advice and assistance on all aspects of Dyalog usage is available by e-mail (support@dyalog.com) and/or telephone (+44 1256 830030 – limited to U.K. office hours). Limited advice on design and coding is available, but is not intended to replace the use of the printed and on-line documentation. Except when reporting an issue with the software, users are encouraged to seek advice from the user community via the Dyalog Forum (reading the content of the forums does not require membership).

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