Tacit Talk

In this episode, the 1979 Turing Award paper "Notation as a Tool of Thought" by Kenneth E. Iverson is read by the Speechify text-to-speech app.

Socials

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

Show Notes

Date Released: 2026-03-02

• Notation as a Tool of Thought (1979)

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 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 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)

In this episode, the collection of quotations and anecdotes by Ken Iverson and friends, originally compiled and editted by Roger Hui in 2005 but last updated in 2021 is read by the Speechify text-to-speech app.

Socials

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

Show Notes

Date Released: 2025-03-02

• Ken Iverson Quotations and Anecdotes (2005)
• Speechify (save $60 by using this link)

In this episode, Conor interviews Kai Schmidt, creator of the Uiua language.

Socials

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

About the Guest

Kai Schmidt is a Rust developer, language enthusiast and the creator of the Uiua programming language, a general purpose, stack-based, array-oriented programming language.

Show Notes

Date Recorded: 2025-02-21
Date Released: 2025-02-22

• Uiua
• Uiua Pad

In this episode, the paper The Design of APL (1973) is read by the Speechify text-to-speech app.

Socials

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

Show Notes

Date Released: 2025-02-11

• The Design of APL (1973)
• Speechify (save $60 by using this link)

In this episode, the paper The Evolution of APL (1978) presented at the first HOPL conference is read by the Speechify text-to-speech app.

Socials

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

Show Notes

Date Released: 2025-02-08

• The Evolution of APL (1978) - on JSoftware
• The Evolution of APL (1978) - on ACM Digital Library
• Speechify (save $60 by using this link)

In this episode, the Array Theory and the Design of Nial (2013) text is read by the Speechify text-to-speech app.

Socials

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

Show Notes

Date Released: 2025-02-05

• Array Theory and the Design of Nial (2013)
• Speechify (save $60 by using this link)

In this episode, the Array Theory and the Design of Nial (2013) text is discussed.

Socials

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

Show Notes

Date Released: 2025-01-29

• Array Theory and the Design of Nial (2013)
• NotebookLM

In this episode, Conor interviews Madeline Vergani about TinyAPL, Omnibar, Strawberry and more!

Socials

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

About the Guest

Madeline Vergani is the creator of TinyAPL and the Omnibar.

Show Notes

Date Recorded: 2025-01-25
Date Released: 2025-01-26

• TinyAPL
• Omnibar
• TinyAPL Combinators
• ArrayCast Episode 88: Madeline Vergani and tinyapl
• https://github.com/codereport/array-language-comparisons
• Madeline's Blog
• TinyAPL Trains
• BQN - What is a primitive?
• Nial Atlases
• Strawberry

In this episode, the Collection-Oriented Languages (1990) paper is discussed.

Socials

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

Show Notes

Date Released: 2025-01-09

• Collection-Oriented Languages (1990)
• NotebookLM

In this episode, the 1979 ETI article APL: Good for the Brain (1979) is discussed.

Socials

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

Show Notes

Date Released: 2025-01-06

• APL: Good for the Brain (1979)
• NotebookLM

In this episode, Conor interviews dzaima about APL, BQN, Advent of Code and more!

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra (Twitter)
• Conor Hoekstra (GitHub)
• Conor Hoekstra (Mastodon)

About the Guest

dzaima is author of dzaima/APL, dzaima/BQN, CBQN, dzaima/paste and more!

Show Notes

Date Recorded: 2024-12-20
Date Released: 2024-12-21

• BQN Language
• CBQN
• dzaima/APL
• dzaima/BQN
• dzaima/paste
• dzaima YouTube Channel
• dzaima/SOGL
• dzaima/Canvas
• Kap Language
• BQN ⌾ (Under) Modifier
• BQN Comp.java
• bqn.js
• Other BQN Implementations
• BQN Implementation Components
• BQN compiler (c.bqn)
• BQN r0.bqn
• BQN r1.bqn
• Singeli
• Advent of Code Day 12
• AoC Day 12 BQN Dzaima’s Solution
• Linux perf Tool
• CBQN )time function
• CBQN )profile function
• dzaima/grr
• detegr/bqnlsp

In this episode, the 1991 paper A Personal View of APL is discussed.

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra (Twitter)
• Conor Hoekstra (GitHub)

Show Notes

Date Released: 2024-12-10

• A Personal View of APL (1991)
• NotebookLM

In this episode, the 1989 Phrasal Forms paper is discussed.

Socials

• Tacit Talk YouTube Playlist
• Conor Hoekstra (Twitter)
• Conor Hoekstra (GitHub)

Show Notes

Date Released: 2024-12-05

• Phrasal Forms - JSoftware (1989)
• Phrasal Forms - PDF (1989)
• NotebookLM