In this episode, Conor chats with Adám Brudzewsky about Dyalog 20.0, array notation, namespaces and the behind operator.

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra: LinkTree / Bio

About the Guest

Adám Brudzewsky is the head of language design at Dyalog Ltd. He is a lifelong APL programmer, founder of the APL Orchard, and the creator of Extended Dyalog APL and APLcart.

Show Notes

Date Recorded: 2026-01-01
Date Released: 2026-01-02

• Dyalog
• Dyalog 20.0
• TryAPL
• Behind is Here
• Using the Behind Operator in Dyalog APL // APL Programming // NEW in Dyalog v20.0
• ArrayCast Podcast
• Dyalog User Meeting YouTube Channel
• Dyalog Ltd YouTube Channel
• Dyalog 20.0 Top 5 Features
• APL Quest
• APL Challenge
• Working with Array Notation in Dyalog APL // APL Programming // NEW in Dyalog v20.0
• Inline Tracing in Dyalog // APL Programming // NEW in Dyalog v20.0
• Using the Behind Operator in Dyalog APL // APL Programming // NEW in Dyalog v20.0
• Running External Programs with ⎕SHELL // APL Programming // NEW in Dyalog v20.0
• Namespace Manipulation and Data Extraction // APL Programming // NEW in Dyalog v20.0
• The Beauty of Algorithms (code_report YouTube Video)
• TinyAPL Extra Arguments
• APL Session from Recording
• Kap Forks
• J Train Table
• Elimination Sort (APL Quest 2023-1)
• What’s Your Sign? (APL Quest 2018-4)

In this episode, Conor chats with Max Sun about his path to becoming an APL-er.

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra: Twitter | BlueSky | Mastodon

About the Guests

Max Sun is Senior APL Developer at InvestCloud, Inc. and was previously an APL developer at BCA Research. His interests include array programming, functional programming and programming languages and paradigms.

Show Notes

Date Recorded: 2025-10-05
Date Released: 2025-12-29

• Tacit Talk Episode 28: Co-dfns & AI with Aaron Hsu
• ArrayCast Episode 22: Josh David, APL in Industry
• BCA Research
• CTFP Videos
• APL Open Jobs

In this episode, Conor chats with Aaron Hsu live from Minnowbrook 2025 about Co-dfns, fonts, AI and more!

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra: Twitter | BlueSky | Mastodon

About the Guests

Aaron Hsu is the implementor of Co-dfns and an advocate for a terse and minimal array programming style. Hsu has a background in academic functional programming, and was primarily a Scheme programmer for ten years before learning APL. He was introduced to APL by Morten Kromberg while working on a GPU-hosted compiler, and switched to Dyalog APL for the project, which is now Co-dfns.

Show Notes

Date Recorded: 2025-10-04
Date Released: 2025-10-22

• ADSP Episode 197: 🇬🇧 Algorithms & Tersity with Aaron Hsu
• ADSP
• ArrayCast
• ADSP Episode 111: C++23 Ranges, 2022 Retro & Star Wars
• APL Fonts
• Pragmata Pro Font
• Stanley Jordan
• Co-dfns
• Co-dfns 4.1.4
• Co-dfns Tweet
• ArrayFire
• DyalogScript
• Learning APL
• ArrayCast Episode 114: Gary Bergquist and Zark Utilities

In this episode, Conor moderates a discussion between Aaron Hsu and Jon Smith about tersity.

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra: Twitter | BlueSky | Mastodon

About the Guests

Aaron Hsu is the implementor of Co-dfns and an advocate for a terse and minimal array programming style. Hsu has a background in academic functional programming, and was primarily a Scheme programmer for ten years before learning APL. He was introduced to APL by Morten Kromberg while working on a GPU-hosted compiler, and switched to Dyalog APL for the project, which is now Co-dfns.

Jon Smith is a senior software engineer and security researcher with a focus on compilers, reverse engineering, and low-level systems development. His expertise spans multiple architectures and operating systems, with a particular emphasis on LLVM internals, static analysis tooling, and custom native code generation, including everything from shellcode and bootloaders to bespoke object file layouts. He has written custom compiler optimizations, firmware for embedded systems, and tooling for both offensive and defensive security applications. With a strong background in C, C++, and assembly, he often works at the intersection of language tooling and binary analysis, applying deep systems knowledge to practical engineering problems. He also maintains a public Twitch stream aimed at making vulnerability research accessible to newcomers without a formal computer science background.

Show Notes

Date Recorded: 2025-03-24
Date Released: 2025-03-28

• GitHub Discussion of ADSP Episode 197: 🇬🇧 Algorithms & Tersity with Aaron Hsu
• ADSP Episode 197: 🇬🇧 Algorithms & Tersity with Aaron Hsu
• Co-dfns
• Conway's Law
• Bill Gate's "An Open Letter to Hobbyists"

In this episode, the discussion on GitHub between Aaron and Jon from the ADSP Episode 197 is read by the Speechify text-to-speech app.

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra: Twitter | BlueSky | Mastodon

Show Notes

Date Released: 2025-03-19

• GitHub Discussion of ADSP Episode 197: 🇬🇧 Algorithms & Tersity with Aaron Hsu
• ADSP Episode 197: 🇬🇧 Algorithms & Tersity with Aaron Hsu
• AI Won't Fix the Fundamental Flaw of Programming
• How an APL Prototype Helped Designing a Service // Martin Janiczek // APL Seeds '21
• Link to Github Discussion
• Speechify (save $60 by using this link)

In this episode, the article "In Praise of APL: A Language for Lyrical Programming" by Alan J. Perlis published in 1977 is read by the Speechify text-to-speech app.

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra: Twitter | BlueSky | Mastodon

Show Notes

Date Released: 2025-03-15

• In Praise of APL: A Language for Lyrical Programming (1977)
• Link to Github Discussion
• Speechify (save $60 by using this link)

In this episode, the article "Almost Perfect Artifacts Improve only in Small Ways: APL is More French than English" by Alan J. Perlis published in 1978 is read by the Speechify text-to-speech app.

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra: Twitter | BlueSky | Mastodon

Show Notes

Date Released: 2025-03-11

• Almost Perfect Artifacts Improve only in Small Ways: APL is More French than English (1978)
• Link to Github Discussion
• Speechify (save $60 by using this link)

In this episode, The Inductive Method of Introducing APL by Kenneth E. Iverson is read by the Speechify text-to-speech app.

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra: Twitter | BlueSky | Mastodon

Show Notes

Date Released: 2025-03-10

• The Inductive Method of Introducing APL (1980)
• Link to Github Discussion
• Speechify (save $60 by using this link)

In this episode, the introduction to the book A Source Book in APL (1981) by Eugene McDonnell is read by the Speechify text-to-speech app.

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra: Twitter | BlueSky | Mastodon

Show Notes

Date Released: 2025-03-08

• A Source Book in APL (1981)
• A Source Book in APL - Introduction (1981)
• Speechify (save $60 by using this link)

In this episode, the article Kenneth E. Iverson - An Autobiographical Essay (2008) by Ken Iverson and with Donald McIntyre is read by the Speechify text-to-speech app.

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra: Twitter | BlueSky | Mastodon

Show Notes

Date Released: 2025-03-05

• Kenneth E. Iverson (2008)
• Kenneth E. Iverson - An Autobiographical Essay (Vector Vol 23, No 4 - 2008)
• Speechify (save $60 by using this link)