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PODCAST

The Array Cast

We explore the Array Languages of APL, J, k, q and offshoots. If you are Array Language curious, this is the podcast for you. Occasionally we may dive into the weeds, but most of the time we try to stay accessible to the general listener.

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All Episodes

01:23:40

Aaron Hsu

The Array Cast ·

2022/01/22

Array Cast - January 22, 2022 Show NotesMany thanks to Adám Brudzewsky and Bob Therriault for collecting these links.0:01:35 APL logo Voting https://aplwiki.com/wiki/APL_logo0:02:20 Conor's Voting Video https://www.youtube.com/watch?v=Jxu4nWh12140:02:47 Vector Dojo https://community.kx.com/t5/KX-Technology/User-Feedback-Request-The-Vector-Dojo/td-p/116450:07:09 Q Basic https://en.wikipedia.org/wiki/QBasic0:10:47 Scheme Manual

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01:12:30

Henry Rich presents J903

The Array Cast ·

2022/01/08

Array Cast - January 8, 2022 Show NotesMany thanks to Rodrigo Girão Serrão and Bob Therriault for collecting these links.00:01:56 Episode 17 of The Array Cast, the dyadic hook https://www.arraycast.com/episodes/episode17-tacit4-the-dyadic-hook00:02:25 FnConf 2022, the conference Aaron Hsu is attending https://www.functionalconf.com/00:02:28 Aaron Hsu video https://www.youtube.com/watch?v=uEEJDq6cNTs00:03:39 Episode 6 of The Array Cast with Henry Rich

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01:14:19

Tacit #4 - the dyadic hook

The Array Cast ·

2021/12/25

Array Cast - December 25, 2021 Show NotesMany thanks to Adám Brudzewsky for collecting these links00:01:30 Ken Iverson: https://apl.wiki/Ken_Iverson00:01:30 J903: https://code.jsoftware.com/wiki/System/Installation/J90300:02:21 APL logo: https://apl.wiki/APL_logo00:02:51 I.P. Sharp: https://apl.wiki/I.P._Sharp_Associates00:04:12 APL⋆PLUS: https://apl.wiki/APL*PLUS00:04:12 Tacit programming: https://apl.wiki/Tacit_programming00:04:12 Hook: https://apl.wiki/Hook00:05:15 Hook in J:

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00:58:42

Brooke Allen - a life of adventure

The Array Cast ·

2021/12/11

Array Cast - December 11, 2021 Show NotesMany thanks to Adám Brudzewsky for collecting these links00:01:53 Dyalog ’21 videos: https://dyalog.tv/Dyalog2100:02:10 APL ∊ BCN: https://apl.wiki/APL_∊_BCN00:02:10 Advent of Code: https://apl.wiki/Advent_of_Code00:02:56 J903 Beta: https://code.jsoftware.com/wiki/System/Installation#J903_BETA00:03:49 Brooke Allen's website: https://brookeallen.com/00:06:32 COBOL: https://en.wikipedia.org/wiki/COBOL00:06:32 COBOL reserved words:

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01:11:25

Tacit #3 (and other topics)

The Array Cast ·

2021/11/27

Array Cast - November 27, 2021 Show Notes00:00:42 J Wiki: https://code.jsoftware.com/wiki/Main_Page00:01:04 APL Wiki: https://apl.wiki00:01:14 Vector Journal: https://vector.org.uk/00:02:04 J Forums: https://code.jsoftware.com/wiki/System/Forums00:03:47 Tacit programming: https://en.wikipedia.org/wiki/Tacit_programming00:03:58 Previous episodes on tacit programming: https://www.arraycast.com/episodes/episode-09-tacit-programming and https://www.arraycast.com/episodes/episode11-why-tacit00:04:51

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00:55:38

Dyalog ‘21 Live

The Array Cast ·

2021/11/13

Array Cast - November 13, 2021 Show NotesLink to presentation resources of Dialog ‘21 https://www.dyalog.com/user-meetings/dyalog21.htm00:00:30 Dyalog User Meeting '21: https://www.dyalog.com/user-meetings/dyalog21.htm00:03:03 Richard Park's presentation on the Dyalog Media Update: TBA00:04:10 ShapeRank: https://github.com/f5devcentral/shapeRank00:05:50 Gitte on Array Cast: https://www.arraycast.com/episodes/episode12-gitte-christensen00:07:45 Brian Becker's presentation about Packaging Dyalog Tools

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01:08:36

Roger Hui (1953-2021)

The Array Cast ·

2021/10/30

Array Cast - October 30, 2021 Show Notes00:00:00 Roger Hui: https://apl.wiki/Roger_Hui00:00:00 Eric Iverson: https://apl.wiki/Eric_Iverson00:00:00 Eric Iverson's announcement: https://www.jsoftware.com/pipermail/programming/2021-October/059091.html00:00:00 J: https://apl.wiki/J00:00:00 Ken: https://apl.wiki/Ken_Iverson00:02:24 Dyalog '21: https://www.dyalog.com/user-meetings/dyalog21.htm00:02:24 Memorial service: https://youtube.com/watch?v=_8FG81Ze1aM00:02:51 Morten Kromberg:

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01:14:37

Gitte Christensen of Dyalog Ltd.

The Array Cast ·

2021/10/16

Array Cast - October 16, 2021 Show Notes0:02:00 Dyalog 21 November 8-90:02:30 APL Campfire0:03:23 APL Logo Design0:36:55 Dyalog Forums0:38:23 APL Wiki0:40:00 Dyalog Search Resource Map1:00:45 APL Orchard1:08:00 Joel Hough 2011 Contest Winner1:11:18 Asher Mancinelli’s YouTube channel

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01:05:13

Why Tacit?

The Array Cast ·

2021/10/02

Array Cast - October 18, 2021 Show Notes0:01:34 Dyalog 21 November 8-90:03:25 Henry Rich talks Tacit on Array Cast0:03:40 Conjunctions and Adverbs in J0:05:24 Henry Rich’s email announcing Tacit Modifiers0:09:00 Tacit definition0:09:20 Tacit version of Average in J0:10:40 Inverses in J0:11:42 Obverse conjunction in J0:14:10 Category Theory0:16:15 Guy Steele “Growing a Language” APL mention p. 60:50:40 Stephen Taylor’s blog post on Tacit Programs1:02:00 Travis Oliphant interviewed by Lex Fridman

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01:22:22

Eric Iverson

The Array Cast ·

2021/09/18

Array Cast - September 18, 2021 Show Notes0:01:50 The Ridiculously Early J Morning Show (youtube) The Ridiculously Early J Morning Show (twitch)0:02:54 Eric_Iverson0:03:10 Ken_Iverson0:05:18 A_Programming_Language0:07:28 Elementary_Functions_An_Algorithmic_Treatment0:09:14 IBM_System/3600:09:59 I.P._Sharp_Associates0:10:13 APL\11300:11:39 Ian_Sharp0:12:14 Larry_Breed0:12:36 Time-sharing0:13:01 SHARP_APL0:13:11 Siemens_System_4004 (in German)0:15:54

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01:17:38

Tacit Programming

The Array Cast ·

2021/09/04

Array Cast - September 4, 2021 Show Notes0:00:16 Larry Breed Obituary Larry Breed Memorial on Zoom - Sept. 12, 1:00pm PDT 0:02:05 The Ridiculously Early J Morning Show (twitch) The Ridiculously Early J Morning Show (youtube)0:03:38 Tacit Programming0:09:06 16 APL Amuse Bouches (Roger Hui)0:10:03 Original ‘Swap’ Character0:19:49 The Power of Composition (Scott Wlaschin)0:20:55 Leetcode 1678 in APL (Rodrigo Girão Serrão)0:23:26 J parser (J for C Programmers)0:31:00

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01:02:17

Attila Vrabecz and the k group of programming languages.

The Array Cast ·

2021/08/21

0:01:45 Time Complexity of Algorithms0:01:50 APL Orchard0:03:40 Array Programming Languages (Wikipedia)0:06:08 Project Euler0:14:30 Conor’s Tweet of the Kaldane Algorithm0:14:53 BQN programming language: 0:18:16 Fold Conjunction in J0:19:47 ADSP #25 Podcast0:30:46 Downloads for k0:30:46 Shakti Homepage0:53:21 Jd database0:59:23 APL Campfire1:00:05 Download for q1:00:05 Starting out in q

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01:25:38

Marshall Lochbaum and the BQN array language.

The Array Cast ·

2021/08/07

0:01:28 Stack Overflow Developer Survey: https://stackoverflow.blog/2021/08/02/2021-stack-overflow-developer-survey-results/0:01:45 Most loved/dreaded programming languages: https://insights.stackoverflow.com/survey/2021#section-most-loved-dreaded-and-wanted-programming-scripting-and-markup-languages0:01:47 Top-paying programming languages https://insights.stackoverflow.com/survey/2021#section-top-paying-technologies-top-paying-technologies0:02:45 Array language

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01:22:20

Henry Rich’s Deep Dive into J

The Array Cast ·

2021/07/24

Array Cast - July 24, 2021 Show Notes02:05 Ian Sharp (1932-2021)03:06 Whitney Smith interview with Ian Sharp20:20 Dissect34:41 Monument.ai’s Parallel Jx43:35 Dyalog APL’s Experimental Parallel Feature43:55 Dyalog APL’s Experimental Future Feature54:00 Fold in J1:09:30 Nuvoc J for C Programmers1:11:17 Quintana’s Jx1:14:47 BQN1:19:09 2021 Dyalog APL Competition APL Campfire1:20:00 Interactive Kx Academy1:20:45 TryAPL.org source available

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01:01:00

Responding to a Listener’s Email

The Array Cast ·

2021/07/10

Array Cast - July 10, 2021 Show Notes02:15 Jean Iverson (1925-2021)04:40 Daniel Sockwell’s email13:09 J phrases13:15 Special Combinations in J23:00 Emacs in q Dyalog J26:30 Shebang in q27:15 J console JHS JQt29:52 Joey Tuttle Piping Solution in J33:20 Rodrigo’s Leetcode Solution to Compression38:00 Regular Expressions Quote51:17 q Introspecting Functions57:41 Growing a Language - Steele56:50 Dyalog Extended Prime Polyfill59:30 Daniel Sockwell’s suggestions for

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01:03:07

What is an Array?

The Array Cast ·

2021/06/26

Array Cast - Show June 26, 2021 Notes02:15 Nested Array Theory - Scholeshttps://aplwiki.com/wiki/Array_model#Nested_array_theory05:37 What is an Array -Huihttps://www.jsoftware.com/papers/array.htm07:07 Is a Scalar an Array - Hui and Richhttps://code.jsoftware.com/wiki/Essays/Scalars07:47 Nuvochttps://code.jsoftware.com/wiki/NuVoc20:38 Inverted Table - Huihttps://code.jsoftware.com/wiki/Essays/Inverted_Table34:08 Rectangles All the Way Down - Thompsonhttps://dyalog.tv/Dyalog18/?v=mK2WUDIY4hk36:04

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01:15:13

What Challenges Face the Array Languages?

The Array Cast ·

2021/06/12

Array Cast - Show June 12, 2021 Notes 10 Most(ly Dead) Influential Programming Languageshttps://www.hillelwayne.com/post/influential-dead-languages/Pharo Launcherhttps://pharo-project.github.io/pharo-launcher/tatin APL Package Manager in Developmenthttps://tatin.dev/J addonshttps://code.jsoftware.com/wiki/Addons/Developers_GuideAdam’s Style Guide for APLhttps://abrudz.github.io/style/Design Patterns vs Anti pattern in APL Aaron W

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00:57:18

Loops and Learning about Array Languages

The Array Cast ·

2021/05/29

Array Cast - Show 1 Notes[Larry Breed (Wikipedia)] https://en.wikipedia.org/wiki/Lawrence_M._Breed [No Stinking Loops - Stevan Apter] http://nsl.com/[J for C Programmers - Henry Rich] https://www.jsoftware.com/help/jforc/contents.htm [Consecutive Ones Problem - ADSP podcast Episode 25] https://adspthepodcast.com/2021/05/14/Episode-25.html [Consecutive Ones Problem - Bob Therriault YouTube video] https://youtu.be/lbi_PMVbeaQ

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00:51:52

Why We Like Array Languages

The Array Cast ·

2021/05/15

[Opening ‘cow sheep cat dog’] https://aplwiki.com/wiki/Simple_examples[Conor Hoekstra ‘Algorithms as a Tool of Thought’] https://dyalog.tv/APLSeeds21/?v=GZuZgCDql6g[Alan Perlis ‘In Praise of APL’]https://apl.wiki/Alan_Perlis[Key]https://help.dyalog.com/latest/#Language/Primitive%20Operators/Key.htm[Under]https://code.jsoftware.com/wiki/Vocabulary/ampdot[Nuvoc - J

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