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The author

Adám Brudzewsky

Head of Language Design

About

Adám is a member of the Dyalog Tools Group. He writes (and helps cutomers to write) APL, implements and maintains parts of our system that are written in APL, teaches APL, and creates materials for demonstration purposes. More about Adám

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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 June 2016) I-beam 819⌶, which was then deprecated. (By the way, did you know that the digits 819 were chosen to be reminiscent of the letters BIg as in big … Read
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The APL Quest Series

It seemed like a normal Friday until mid-afternoon. But on 4 February 2022, I embarked on a journey that, at the time, seemed to stretch impossibly far into the future — a future that wasn’t entirely known yet. In the APL Orchard chat room on Stack Exchange, a dozen APLers, some experts and some newbies, … Read
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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 historical APL systems have provided such mechanisms. However, rather than adopting one of the old keyword schemes, we have decided to go for a more future-proof solution, recognising that the … Read
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Enhanced Debugging with Function Keys – Evaluate selection

See also Enhanced Debugging with Function Keys. When tracing through a complex dfn and reaching a guard (condition:result), I am often wary of tracing into that line because if the condition evaluates to 1 then the current function I’m tracing through will terminate and return the result, leading to me losing situational awareness. Normally, I’d … Read
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Enhanced Debugging with Function Keys

Sometimes I want an additional functionality in the IDE. (Are you a RIDE user? We’ll cover that too!) For example, the other day, I was tracing through some very long functions to find an error which was being caught by a trap. Since the error was being caught, I couldn’t just let the function run … Read
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By other authors

Welcome to the Dyalog ’23 Videos!

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Welcome to the Dyalog ’23 Videos!

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Quicksort in APL Revisited

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Quicksort in APL Revisited

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Karl Holt

Welcome Karl Holt

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Welcome Karl Holt

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Dyalog ’19: Monday 9 September

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Dyalog ’19: Monday 9 September

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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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