The Array Cast

Array Cast - March 5, 2022 Show NotesMany thanks to Adám Brudzewsky for collecting these links.[1] 00:01:23 APL Seeds '22 conference: https://www.dyalog.com/apl-seeds-user-meetings/aplseeds22.htm [2] 00:02:00 APL Quest chat event: https://apl.wiki/APL_Quest [3] 00:02:05 APL Orchard: https://apl.wiki/APL_Orchard [4] 00:02:55 APL Seeds '21 https://www.dyalog.com/apl-seeds-user-meetings/aplseeds21.htm [5] 00:03:38 APL Seeds '22 registration https://us02web.zoom.us/webinar/register/WN_yZb-ha8sRLCJ1DbjAq8nzA [6] 00:04:15 APL Farm: https://apl.wiki/APL_Farm [7] 00:04:20 BQNPad https://bqnpad.mechanize.systems/ [8] 00:06:02 Carlisle Group: https://www.carlislegroup.com/ [9] 00:07:55 APL '99: https://aplwiki.com/wiki/APL_conference#1999[10] 00:10:54 Josh wins second prize: https://www.dyalog.com/news/102/420/2015-APL-Programming-Contest-Winners.htm[11] 00:10:57 And grand prize: https://www.dyalog.com/news/112/420/2016-APL-Programming-Contest-Winners.htm[12] 00:11:04 Winner's presentation: https://dyalog.tv/Dyalog16/?v=afB2IXCBJJ8[13] 00:13:18 Dado Wiki coding practices: https://github.com/the-carlisle-group/Dado/wiki/How-Not-To-Code-In-Dyalog-APL[14] 00:17:23 Paul Mansour's blog: https://www.toolofthought.com[15] 00:18:00 Practical Introduction to APL https://github.com/the-carlisle-group/PracticalAPL[16] 00:18:32 Cas https://github.com/the-carlisle-group/cas-samples[17] 00:18:55 FlipDB https://github.com/the-carlisle-group/FlipDBDoc[18] 00:20:12 Carlisle Group on GitHub: https://github.com/the-carlisle-group[19] 00:23:34 Advent of Code in APL: https://apl.wiki/Advent_of_Code[20] 00:26:25 Outer Product: https://apl.wiki/Outer_Product[21] 00:27:01 ADSP #1 https://adspthepodcast.com/2020/11/20/Episode-0.html[22] 00:29:01 Marshall Lochbaum's intro do APL based on the Outer Product: https://www.youtube.com/watch?v=WlUHw4hC4OY[23] 00:29:23 Inner Product: https://apl.wiki/Inner_Product[24] 00:29:50 Iverson's generalisation of Outer Product: https://www.jsoftware.com/papers/APLDictionary1.htm#dot[25] 00:34:23 Summary of Paul Mansour "Why my mother-in-law has special serving dishes for corn on the cob and I don't" talk: https://www.dyalog.com/user-meetings/dyalog09.htm#24[26] 00:36:03 The Abacus project: https://github.com/the-carlisle-group/Abacus/[27] 00:38:37 Roger's "50" paper: https://www.jsoftware.com/papers/50/[28] 00:39:15 Parenthesis nesting: https://www.jsoftware.com/papers/50/50_05.htm[29] 00:41:25 Finnish book of APL idioms https://www.aplwiki.com/wiki/FinnAPL_idiom_library[30] 00:42:10 APL Quest on "Keeping Things In Balance": https://chat.stackexchange.com/transcript/52405?m=60517971#60517971[31] 00:42:58 Adám's Companion video: https://www.youtube.com/watch?v=El0_RB4TTPA&list=PLYKQVqyrAEj9wDIUyLDGtDAFTKY38BUMN&index=4[32] 00:43:10 Operators Ken Iverson paper https://dl.acm.org/doi/pdf/10.1145/357073.357074[33] 00:45:42 Aaron Hsu's talk "Does APL Need a Type System?": https://www.youtube.com/watch?v=z8MVKianh54[34] 00:48:47 Is-Prefix-Of ⊃⍷ : https://tryapl.org/?clear&q=IsPrefixOf%E2%86%90%E2%8A%83%E2%8D%B7%20%E2%8B%84%20%27ABC%27%20IsPrefixOf%20%27ABCDEF%27%20%E2%8B%84%20%27XYZ%27%20IsPrefixOf%20%27ABCD%27%20%E2%8B%84%20%27ABCD%27%20IsPrefixOf%20%27ABC%27&run[35] 00:49:40 "Default value": https://aplwiki.com/wiki/Fill_element[36] 00:51:02 Average +⌿÷≢ : https://tryapl.org/?clear&q=Average%E2%86%90%2B%E2%8C%BF%C3%B7%E2%89%A2%20%E2%8B%84%20Average%203%201%204%201%205&run[37] 00:51:15 Split ≠⊆⊢ : https://tryapl.org/?clear&q=Split%E2%86%90%E2%89%A0%E2%8A%86%E2%8A%A2%20%E2%8B%84%20%27%2F%27Split%27now%2Fis%2Fthe%2Ftime%27&run[38] 00:51:30 tacit: https://apl.wiki/Tacit_programming[39] 00:52:03 APLcart: https://apl.wiki/APLcart[40] 00:53:30 Dfn: https://apl.wiki/Dfn[41] 00:54:00 Traditional "procedural" functions: https://apl.wiki/Defined_function_(traditional)[42] 00:55:56 Power operator: https://help.dyalog.com/latest/#Language/Primitive%20Operators/Power%20Operator.htm[43] 01:01:30 Big O notation https://en.wikipedia.org/wiki/Big_O_notation[44] 01:02:20 Josh's email: josh {at} dyalog.com[45] 01:02:52 Namespaces: https://apl.wiki/Namespace[46] 01:09:21 Jobs: https://apl.wiki/Jobs[47] 01:10:52 contact at arraycast dot com

Array Cast - February 19, 2022 Show NotesMany thanks to Bob Therriault for collecting these links.[01] 00:01:43 TryAPL.org https://tryapl.org/[02] 00:02:20 J promotional video https://www.youtube.com/watch?v=aV936cVrN0I[03] 00:04:30 BASIC computer language https://en.wikipedia.org/wiki/BASIC[04] 00:05:04 Commodore Pet https://en.wikipedia.org/wiki/Commodore_PET[05] 00:05:50 Nascom One https://en.wikipedia.org/wiki/Nascom_(computer_kit)[06] 00:06:44 I.P. Sharpe Associates https://aplwiki.com/wiki/I.P._Sharp_Associates[07] 00:11:26 Gitte Christensen Episode 12 ArrayCast https://www.arraycast.com/episodes/episode12-gitte-christensen[08] 00:13:20 Futhark Computer Language https://futhark-lang.org/[09] 00:19:50 Smalltalk Computer Language https://en.wikipedia.org/wiki/Smalltalk[10] 00:20:13 Romilly Cocking Presentation Dyalog '08 https://dyalog.tv/Dyalog08/?v=thr-7QfQWJw[11] 00:20:52 OS/2 operating system https://en.wikipedia.org/wiki/OS/2[12] 00:21:37 ODBC https://docs.microsoft.com/en-us/sql/odbc/microsoft-open-database-connectivity-odbc?view=sql-server-ver15[13] 00:21:45 AS400 https://en.wikipedia.org/wiki/IBM_AS/400[14] 00:23:45 Adaytum Software https://aplwiki.com/wiki/Adaytum_Software[15] 00:25:22 Cognos https://en.wikipedia.org/wiki/Cognos[16] 00:26:45 Simcorp APL Italiana https://en.wikipedia.org/wiki/SimCorp[17] 00:33:49 John Scholes https://aplwiki.com/wiki/John_Scholes[18] 00:34:00 Geoff Streeter https://aplwiki.com/wiki/Geoff_Streeter[19] 00:34:00 Pete Donnely https://aplwiki.com/wiki/Pete_Donnelly[20] 00:34:31 "Mastering Dyalog APL" 1st edition PDF: https://dyalog.com/mastering-dyalog-apl.htm[21] 00:34:50 Rodrigo Girão Serrão Episode 20 ArrayCast https://www.arraycast.com/episodes/episode20-rodrigo-girao-serrao[22] 00:35:30 John Daintree https://aplwiki.com/wiki/John_Daintree[23] 00:35:50 ASP.NET https://en.wikipedia.org/wiki/ASP.NET[24] 00:38:08 Dyalog Problem solving competition https://aplwiki.com/wiki/APL_Problem_Solving_Competition[25] 00:59:32 Roger Hui Episode 13 ArrayCast https://www.arraycast.com/episodes/episode13-roger-hui[26] 00:41:50 Functional Conf https://functionalconf.com/[27] 00:41:55 LambdaConf https://lambdaconf.us/[28] 01:00:43 Aaron Hsu Codfns https://www.sacrideo.us/projects/[29] 01:03:06 APL2000 https://aplwiki.com/wiki/APL2000[30] 01:06:00 MicroAPL documentation https://microapl.com/apl_help/[31] 01:11:25 Link presentation https://dyalog.tv/Dyalog21/?v=K_-E1tnH06k[32] 01:14:31 Nick Nickolov https://aplwiki.com/wiki/Nick_Nickolov[33] 01:16:38 Dyalog Careers https://www.dyalog.com/careers.htm

Array Cast - February 5, 2022 Show NotesMany thanks to Rodrigo Girão Serrão and Bob Therriault for collecting these links.[01] 00:01:31 ArrayFire add-on for J https://github.com/jsoftware/math_arrayfire[02] 00:02:19 J thread discussing addition of dictionaries to J: http://www.jsoftware.com/pipermail/programming/2022-February/059906.html[03] 00:03:28 Vote for an APL logo: https://aplwiki.com/wiki/APL_logo[04] 00:06:16 Rodrigo's “Pydon'ts” book: https://mathspp.com/blog/pydonts[05] 00:06:22 Rodrigo's Python talks: https://github.com/mathspp/talks[06] 00:06:28 Rodrigo's APL talk at Dyalog '21: https://dyalog.tv/Dyalog21/?v=gOUFXBUMv_A[07] 00:06:39 Rodrigo's APL YouTube channel: https://www.youtube.com/channel/UCd_24S_cYacw6zrvws43AWg[08] 00:06:39 Rodrigo's blog: https://mathspp.com/blog[09] 00:11:25 Code golf community: https://codegolf.stackexchange.com[10] 00:11:27 Challenges Rodrigo posted on the code golf community: https://codegolf.stackexchange.com/users/75323/rgs?tab=questions[11] 00:11:51 The APL Orchard: https://apl.chat[12] 00:12:11 Reworked "Mastering Dyalog APL": https://mastering.dyalog.com[13] 00:14:01 "Mastering Dyalog APL" 1st edition PDF: https://dyalog.com/mastering-dyalog-apl.htm[14] 00:15:02 New features of each Dyalog APL version: https://aplwiki.com/wiki/Dyalog_APL_versions[15] 00:19:11 Aaron Hsu episode https://www.arraycast.com/episodes/episode19-aaron-hsu[16] 00:20:39 Numpy: https://numpy.org/[17] 00:21:05 "Epigrams on Programming" by Alan Perlis: https://en.wikipedia.org/wiki/Epigrams_on_Programming[18] 00:21:15 "Structure and Interpretation of Computer Programs": https://en.wikipedia.org/wiki/Structure_and_Interpretation_of_Computer_Programs[19] 00:27:47 https://en.wikipedia.org/wiki/Wordle[20] 00:31:00 Elixir https://elixir-lang.org/[21] 00:44:27 rich: https://github.com/textualize/rich[22] 00:50:03 MiServer: https://miserver.dyalog.com/[23] 00:50:19 SharpLeaf and SharpPlot: https://www.dyalog.com/documentation_180.htm#TOOLS[24] 00:59:28 APL Seeds '21: https://www.dyalog.com/apl-seeds-user-meetings/aplseeds21.htm[25] 00:59:32 Tomas Gustafsson presentation "Simulation and Gaming with APL" at APL Seeds '21: https://dyalog.tv/APLSeeds21/?v=iC9floP7POU[26] 01:00:56 Scratch (MIT): https://scratch.mit.edu/[27] 01:03:44 Aaron Hsu 'Does APL Need a Type System' https://www.youtube.com/watch?v=z8MVKianh54[28] 01:04:35 Guy Steele 'Growing a Language' https://www.cs.virginia.edu/~evans/cs655/readings/steele.pdf[29] 01:05:06 ngn/APL, an APL that lets you define your own Unicode symbols: https://aplwiki.com/wiki/Ngn/apl[30] 01:08:00 Conor's Github Scrabble Dictionary https://github.com/codereport/Scrabble/blob/master/python/dictionary.txt[31] 01:10:00 APL_Farm Discord/Matrix https://aplwiki.com/wiki/APL_Farm[32] 01:11:58 mailto:contact@ArrayCast.com[33] 01:14:51 "Solving LeetCode in APL" YouTube series: https://www.youtube.com/playlist?list=PLgTqamKi1MS2b-aKabbnAsnTiQgJAbmnr[34] 01:15:10 Richard Park's youtube channel https://www.youtube.com/c/RikedyP/videos[35] 01:15:15 Bob Therriault's youtube channel https://www.youtube.com/user/bobtherriault/videos[36] 01:15:20 Conor Hoekstra's youtube channel https://www.youtube.com/c/codereport/featured

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_logo 0:02:20 Conor's Voting Video https://www.youtube.com/watch?v=Jxu4nWh1214 0:02:47 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/QBasic 0:10:47 Scheme Manual https://www.gnu.org/software/mit-scheme/documentation/stable/mit-scheme-user.pdf       Chez Scheme https://www.scheme.com/ 0:14:27 Indiana University C.S. Department https://cs.indiana.edu/ 0:15:00 Kent Dybvig Dissertation http://www.cs.unc.edu/xcms/wpfiles/dissertations/dybvig.pdf 0:15:26 Schneider, Fred B. On concurrent programming. 1997. Springer-Veriag: New York. ISBN 0-387-94942-9 https://link.springer.com/book/10.1007/978-1-4612-1830-2 0:16:20 Game of Life Scholes https://apl.wiki/John_Scholes'_Conway's_Game_of_Life 0:17:00 APLX https://apl.wiki/APLX 0:20:00 K https://k.miraheze.org0:21:37 Arthur Whitney https://apl.wiki/Arthur_Whitney0:22:06 J incunabulum https://code.jsoftware.com/wiki/Essays/Incunabulum0:22:57 Arthur Whitney Comparing APL and Lisp - https://kparc.com/lisp.txt 0:27:50 Bullet Journalling https://bulletjournal.com/pages/learn0:30:00 Chinese Language Forms https://en.wikipedia.org/wiki/List_of_Chinese_classifiers0:36:15 Notation as a Tool of Thought https://www.eecg.utoronto.ca/~jzhu/csc326/readings/iverson.pdf  0:39:33 PL Wonks Co Dfns Talk https://www.youtube.com/watch?v=9NR3sz4D4zc  0:44:21 Reversible Computing Roshan P. James https://scholar.google.com/citations?user=0sGAm4sAAAAJ&hl=en 0:47:45 Devoxx - Refactor your language knowledge portfolio https://www.youtube.com/watch?v=zajUPJI19ZQ 0:49:50 SQL https://en.wikipedia.org/wiki/SQL0:50:50 Functional Conf 2018 Live Coding https://www.youtube.com/watch?v=Gsj_7tFtODk&t=1158s 0:51:43 Aaron Hsu Resource Page https://aplwiki.com/wiki/Aaron_Hsu 0:53:00 A Data Parallel Compiler Hosted on the GPU https://scholarworks.iu.edu/dspace/handle/2022/24749 0:54:00 Patterns and Anti-patterns Dyalog https://dyalog.tv/Dyalog17/?v=9xCJ3BCIudI 0:54:17 Patterns and Anti-patterns Functional Conf 2017 https://www.youtube.com/watch?v=v7Mt0GYHU9A1:01:40 TryAPL https://tryapl.org/1:02:40 Spenserian Script https://en.wikipedia.org/wiki/Spencerian_script1:06:24 Englebart Group Cognition https://dougengelbart.org/content/view/194/ 1:11:30 Chronicles of Thomas Covenant https://en.wikipedia.org/wiki/The_Chronicles_of_Thomas_Covenant 1:12:52 ADSP podcast #56 Leetcode in BQN https://adspthepodcast.com/2021/12/17/Episode-56.html 1:17:50 A Programming Language - Iverson https://www.jsoftware.com/papers/APL.htm 1:18:00 Aaron's Website - https://www.sacrideo.us/

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 https://www.arraycast.com/episodes/episode-06-henry-richs-deep-dive-into-j00:05:07 J 9.03 release notes https://code.jsoftware.com/wiki/System/ReleaseNotes/J90300:06:20 Invisible Modifiers https://code.jsoftware.com/wiki/Vocabulary/fork#invisiblemodifiers00:07:20 Fork https://code.jsoftware.com/wiki/Vocabulary/fork00:08:10 Modifier https://code.jsoftware.com/wiki/Vocabulary/Modifiers00:10:24 ArrayCast Tacit Episodeshttps://www.arraycast.com/episodes/episode-09-tacit-programminghttps://www.arraycast.com/episodes/episode11-why-tacithttps://www.arraycast.com/episodes/episode15-tacit-3-and-other-topicshttps://www.arraycast.com/episodes/episode17-tacit4-the-dyadic-hook00:12:43 ButIfNull https://www.jsoftware.com/help/jforc/empty_operands.htm#_Toc19173437800:15:20 Higher Order Functions https://en.wikipedia.org/wiki/Higher-order_function00:25:30 The J Parser https://www.jsoftware.com/help/jforc/parsing_and_execution_i.htm#_Toc19173458400:28:20 Locale Path Names https://www.jsoftware.com/help/jforc/modular_code.htm#_Toc19173448600:34:06 Bill Kahan Compensated Summation https://en.wikipedia.org/wiki/Kahan_summation_algorithm00:37:20 Jeffrey Borror: Q for all https://www.youtube.com/watch?v=8eoysfqO3UY00:38:16 J labs https://code.jsoftware.com/wiki/Labs/Index00:39:53 "Try APL"-like system for J http://joebo.github.io/j-emscripten/full.html00:42:00 Dissect https://code.jsoftware.com/wiki/Vocabulary/Dissect00:47:38 Henry's book, "J for C programmers" https://www.jsoftware.com/help/jforc/contents.htm00:47:38 "Learning J" https://www.jsoftware.com/help/learning/contents.htm00:47:38 "Easy J" https://www.jsoftware.com/books/pdf/easyj.pdf00:52:00 NuVoc https://code.jsoftware.com/wiki/NuVoc00:53:11 "J for the APL programmer" https://www.jsoftware.com/papers/j4apl.htm00:57:56 Catalan J Video Lab series https://www.youtube.com/playlist?list=PL275xqeqDUOiOQb8Vic-E_ocq10EC_ELQ01:03:10 J Software GitHub organization https://github.com/jsoftware01:03:10 J Forums http://www.jsoftware.com/mailman/listinfo/programming01:03:10 You can reach Henry through contact@arraycast.com01:07:37 APL Wiki https://apl.wiki 01:09:00 Books on J https://code.jsoftware.com/wiki/Books01:10:00 Bo Burnham - Welcome to the Internet https://www.youtube.com/watch?v=k1BneeJTDcU

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: https://code.jsoftware.com/wiki/Vocabulary/hook00:07:36 BQN: https://apl.wiki/BQN00:07:36 Fork: https://apl.wiki/Tacit_programming#3-trains00:08:20 Beside: https://apl.wiki/Beside00:09:46 ADSP C++ episode: https://adspthepodcast.com/2021/12/10/Episode-55.html00:09:46 ADSP BQN episode: https://adspthepodcast.com/2021/12/17/Episode-56.html00:10:30 BQN solutions: https://github.com/codereport/LeetCode/blob/master/0269_Problem_1.bqn#L500:10:31 Iota sequence: https://apl.wiki/Index_Generator00:10:31 J solution: https://tio.run/##y/r/303B1kpBWyFTjys1OSNfwdBAwU3B9P9/AA00:12:22 Stephen's blog post: https://www.5jt.com/the-rest-is-silence00:12:22 APL solution: https://tryapl.org/?clear&q=%E2%8E%95IO%E2%86%900%20%E2%8B%84%20F%20%E2%86%90%20%2B%E2%88%98%E2%8D%B3%20%E2%8B%84%2010%20F%205&run00:16:15 BQN solution using After: https://mlochbaum.github.io/BQN/try.html#code=RiDihpAgK+KfnOKGlQoxMCBGIDU=00:18:21 The [APL] Orchard: https://apl.chat00:30:03 (P)QRS in APL: https://tio.run/##SyzI0U2pTMzJT///P0DhUdsEhepHvbuAtOGjjhmP2iYrPOpuUVDXUNcBiuqoKwQogFhbddQ11Wu5AgmrD0RWH0RYfRCy@mDC6oOR1XM96psK0qFeoa6gEQg0K1hTQb1SHUU4QAEh8f8/AA00:30:03 (P)QRS in J: https://tio.run/##hcw7CsAgEITh3lNMNwp2SSXkDj6OEAIhTVo9vdnOLBZ2w7/L9/QecQRsCCBpSU9Gmb7JcJIQgt3HtUqGenAmTUJaCUkLeRLySshaKJNQVkLRgrnO@wUrYZPoxYGNvxgxcu8f00:33:30 Golfing: https://apl.wiki/Code_golf00:33:42 Marshall Lochbaum's birds table: https://mlochbaum.github.io/BQN/doc/birds.html00:33:42 Hook Conjunction? paper: https://code.jsoftware.com/wiki/Essays/Hook_Conjunction%3F00:35:37 IsPalindrome in APL (or BQN): https://tio.run/##SyzI0U2pTMzJT///37M4IDEnMy@lKD83VeFR2wSFR12LHnUufNSzl@tR31SQAIoK9aLE5NTkxCJ17LIZ@UXFqer//wMA00:35:37 IsPalindrome in J: https://tio.run/##y/r/37M4IDEnMy@lKD83VcHWSkHXqkaPKzU5I18BRUa9KDE5NTmxSB2bXEZ@UXGq@v//AA00:36:41 APL\?: https://www.jsoftware.com/papers/J1990.htm00:41:57 Applied inline in J: https://tio.run/##y/r/PzU5I19BQ9eqRk9TQb0oMTk1ObFInQtFNCO/qDhV/f9/AA00:41:57 Applied inline in APL: https://tio.run/##SyzI0U2pTMzJT////1Hf1EdtExQedS581DHjUc/eR70rFNSLEpNTkxOL1LmwymbkFxWnqv//DwA00:42:54 Atop "unary-binary": https://apl.wiki/Atop_(operator)00:43:19 Beside/After "binary-unary": https://apl.wiki/Beside00:45:25 Over: https://apl.wiki/Over00:45:25 APL Wiki's table: https://apl.wiki/Function_composition00:48:25 Marshall's table: https://youtu.be/czWC4tjwzOQ?t=145600:48:25 Adám's alternative table: https://youtu.be/Hln3zryunsw?t=115100:53:28 Ambivalent: https://apl.wiki/Ambivalent_function00:55:01 Case-folding: https://help.dyalog.com/latest/#Language/System%20Functions/c.htm00:55:01 Case-insensitive using Over: https://tryapl.org/?clear&q=%27Hello%27%20%E2%89%A1%E2%8D%A5%E2%8E%95C%20%27HELLO%27%20%E2%8B%84%20%27Hello%27%20%E2%8D%B3%E2%8D%A5%E2%8E%95C%20%27E%27%20%E2%8B%84%20%27L%27%20%E2%88%8A%E2%8D%A5%E2%8E%95C%20%27Hello%27&run00:55:01 HTMLTag Over ⎕C: https://tryapl.org/?clear&q=HTMLTag%E2%86%90%7B%E2%8D%BA%E2%86%90%7B(%C2%AF8%E2%86%93%E2%8D%BA)%2C1%E2%86%93%E2%8D%B5%7D%20%E2%8B%84%20%E2%88%8A%27%3Ci%20class%3D%22%27%E2%8D%BA%27%22%3E%27%2C%E2%8D%B5%2C%27%3C%2Fi%3E%27%7D%20%E2%8B%84%20HTMLTag%E2%8D%A5%E2%8E%95C%27CONTENT%27%20%E2%8B%84%20%27MyClass%27HTMLTag%E2%8D%A5%E2%8E%95C%27CONTENT%27&run00:55:01 HTML escape using Over: https://tryapl.org/?clear&q=HTMLTag%E2%86%90%7B%E2%8D%BA%E2%86%90%7B(%C2%AF8%E2%86%93%E2%8D%BA)%2C1%E2%86%93%E2%8D%B5%7D%20%E2%8B%84%20%E2%88%8A%27%3Ci%20class%3D%22%27%E2%8D%BA%27%22%3E%27%2C%E2%8D%B5%2C%27%3C%2Fi%3E%27%7D%20%E2%8B%84%20HTMLEsc%E2%86%90%27%5C%3C%27%20%27%26%27%E2%8E%95R%27%5C%26lt%3B%27%20%27%5C%26amp%3B%27%20%E2%8B%84%20HTMLTag%E2%8D%A5HTMLEsc%27H%E2%82%82O%3Cblood%27%20%E2%8B%84%20%27r%26d%27HTMLTag%E2%8D%A5HTMLEsc%27H%E2%82%82O%3Cblood%27&run00:59:24 Advent of Code: https://apl.wiki/Advent_of_Code00:59:24 Execute comma separated list: https://tryapl.org/?clear&q=%E2%8D%8E%2731%2C41%2C59%27&run01:00:49 Parsing text data files: https://youtu.be/AHoiROI15BA01:03:13 Advent of Q: https://github.com/StephenTaylor-Kx/adventofq01:03:46 Dfn syntax: https://apl.wiki/Dfn01:03:46 Dfn default left arguments: https://apl.wiki/Dfn#Default_left_arguments01:03:46 Cover for Minus: https://tryapl.org/?clear&q=Minus%E2%86%90%7B%E2%8D%BA%E2%86%90%E2%8A%A2%20%E2%8B%84%20%E2%8D%BA-%E2%8D%B5%7D%20%E2%8B%84%2010%20Minus%203%20%E2%8B%84%20Minus%205&run01:08:26 "Alpha gets" on APLcart: https://aplcart.info?q=%E2%8D%BA%E2%86%9001:09:19 Dyadic Hook in Python: https://tio.run/##K6gsycjPM7YoKPr/PyM/P1vBViEnMTcpJVEhTSfdCsqs0Km0StOo0EnXqNTU5CrIKS1GKAPJRVdopyqk5RcppCpk5ilUxnJl5pckApUUJealp3IVFGXmlWiADNcAadUBSWpqGBromGpq/v8PAA01:09:34 "define the hook in any functional language":JavaScript: https://tio.run/##JY3BCsMgEETvfkWOu9Qu7aHQi4F@R@lBgrE2tiuaBv16o@Q0zDxm5qM3nabownre7rW@mZdBDTBLi2qELEuTuamFgiiC/6eOj7zQVwcAI10z@WRQOF5141mNTyJ6xKgLZKTFlAT4EhP/EntDni30J@h7spcQrhd5Q6x1BwRuby: https://tio.run/##KypNqvz/PyM/P1vBVkHXLk0nvVrXrkKnsjotukInPboyNra2lqsgp7QYLA2SqNTLTSyorkmsSdSuAMpl5pckQuSqDfT09CqAqhVAxkWDNOmAZGOjDQ10TGP//wcAHaskell: https://tio.run/##y0gszk7Nyfn/PyM/P1shTSFdoUKhUsEWyKpQ0EhXqNTkKsgpLQZybBVyEwsUNLQrNLky80sSwSLRBnp6FbqGsVy5iZl5QH5BUWZeiYKKAtgssD6wUkMDBdP//wEpoint-free Haskell: https://tio.run/##y0gszk7Nyfn/PyM/P1vBViEtJ7NAQU9BQ0NPU0@TqyCntBgomJsIFtPW5MrML0lUqAAKRRvo6VXoGsZy5SZm5gH5BUWZeSUKKgpgY8DawEoNDRRM//8HAALisp: https://tio.run/##RY9BDoMgEEX3nuInXTiTbuyiB0IUazoyBDXV07dgsd0x8PLmYWWcw5u63q0eQdYZtEFmrgDQZII1MR/zJGZqOwPaGXTFhp25PCWeq6pIRl0S1Orqu69FVAOcRni4qBMatL3oCwdSDFZFervAM58xD9UnyGEolrI97z2LEmaNCFyq@Q1DDsuaEEe//O/pEF7q45OXOmcybg3uif0AScheme: https://tio.run/##RU27DoMwDNz5ihttVUhl6MTXpMUJUR2CmkaFr09NO@DB8p3vUR6zJOlDjSqtUS3SpzxVlQIqLx9xrH5gxjgi5rfraBIfFwGtWgsWKIOSW0Hq0n1yBoy42COZSZlPw5zzEx6BT@2G3ZDHBgp22nSmj2VVt4P@jl/PUc0YrrgdiYt81CK5tS8C++: https://tio.run/##XZHPboQgEMbvPsUkTbqQ0s320IvafRHTAyKypAgGIdlN47NbZl2r7gWZP9/8vhHR9@/CcKum6UVbYWIjodRuCF7y7pytORs76bXYpowewjbmRjmvwyXptA3QcW0J/c0AeAwOtAscvqD6Jli0FLACMIQmz3FSmdJn4N4TS4u1hDKSssdaKpzHsOUobYPX06PTyxC9xQrGY7EwexOHlcnZM63euQie26F1viP1SqsX1iZX8XmgSPIF/SaKce@m3nu5OPeTvKAZjF@hZTBf1OLiIaxapmbAlQF@bnTBtOTKFLlRWoz/05928hJXRhrB9Rn@QEo@Tuzzbi/tR@b3yFNnIt/lwsUAZQk6HQc4FGM2TtMf01:11:43 Oliver Mooney's intro to J: https://youtu.be/t32bIbzQdCU01:11:43 APL Wiki Learning Resources: https://apl.wiki/Learning_resources01:13:42 Stephen's website: https://5jt.com

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: https://www.ibm.com/docs/en/iis/9.1?topic=words-cobol-reserved00:07:01 Fortran: https://en.wikipedia.org/wiki/Fortran00:07:01 Iverson’s A Programming Language textbook: http://apl.wiki/A_Programming_Language00:07:41 APL\360 manual: http://www.bitsavers.org/pdf/ibm/apl/GH20-0683-1_APL_360_Users_Manual_Mar70.pdf00:09:11 Iverson's algebra book: https://www.jsoftware.com/books/pdf/algebra.pdf00:11:12 BASIC https://en.wikipedia.org/wiki/BASIC00:21:45 IBM 5110: https://en.wikipedia.org/wiki/IBM_511000:23:19 IBM PC: https://en.wikipedia.org/wiki/IBM_Personal_Computer00:27:31 Dennis Shasha: https://en.wikipedia.org/wiki/Dennis_Shasha

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 Perl weekly challenge 88: https://theweeklychallenge.org/blog/perl-weekly-challenge-088/00:07:53 Adám's initial solution in APL: https://tryapl.org/?clear&q=%7B%C3%97%2F%E2%8D%B5%5B~%E2%8D%A41%200%E2%8D%A8%E2%8D%B3%E2%89%A2%E2%8D%B5%5D%7D10%205%207%208&run00:10:14 Stephen's initial solution in K: https://tio.run/##y9bNS8/7/79aQ0u/QlO1otbQQMFUwVzB4v9/AA00:10:14 Stephen's initial solution in APL: https://tryapl.org/?clear&q=%7B(%C3%97%2F%E2%8D%B5)%C3%B7%E2%8D%B5%7D10%205%207%208&run00:11:51 Bob's J solution: https://tio.run/##y/oPBIZqGlr6MXqahgYKpgrmChYKAA and video at https://www.youtube.com/watch?v=0GPoCk__2lw00:12:06 Conor's revamp of J into C++: https://www.youtube.com/playlist?list=PLVFrD1dmDdvfVhYLU_iKkV67X9XqCJLWe00:12:28 Outfix: https://code.jsoftware.com/wiki/Vocabulary/bslashdot#dyadic00:13:27 Conor's solutions: https://github.com/manwar/perlweeklychallenge-club/tree/master/challenge-088/conor-hoekstra00:16:40 Conor's YouTube video: https://youtu.be/bXsKo2ZhgTg00:17:02 Recent ADSP Podcast on Speed vs Efficiency: https://adspthepodcast.com/2021/11/12/Episode-51.html00:20:40 Stephen's extension in APL and K: {(×/⍵)÷⍵+⍵=0} and {(*/x)%x+x=0}00:21:32 Adám's conversion of the APL solution to tacit forms: ×/÷⊢+0=⊢ or ×/÷⊢+0∘=00:28:02 Episode mentioning test-driven design: https://www.arraycast.com/episodes/episode14-dyalog-21-live00:33:40 Top-down programming: https://en.wikipedia.org/wiki/Top-down_and_bottom-up_design00:41:24 Is-palindrome fork: https://tryapl.org/?clear&q=(%E2%8C%BD%E2%89%A1%E2%8A%A2)%27racecar%27%20%E2%8B%84%20(%E2%8C%BD%E2%89%A1%E2%8A%A2)%27carrace%27%20%E2%8B%84%20%E2%8C%BD%E2%89%A1%E2%8A%A2&run00:42:18 Find primtive: https://apl.wiki/Find https://code.jsoftware.com/wiki/Vocabulary/ecapdot00:43:06 "abab": https://tryapl.org/?clear&q=%27ab%27%20%E2%8D%B7%20%27abab%27&run00:43:36 Prefix: https://tryapl.org/?clear&q=%27ab%27%20(%E2%8A%83%E2%8D%B7)%20%27abab%27&run00:44:08 Found anywhere: https://tryapl.org/?clear&q=%27ba%27%20(%E2%88%A8%2F%E2%8D%B7)%20%27abab%27&run00:44:27 How many: https://tryapl.org/?clear&q=%27ab%27%20(%2B%2F%E2%8D%B7)%20%27abab%27&run00:44:33 Suffix: https://tryapl.org/?clear&q=%27ab%27%20(%E2%8A%83%E2%8D%B7%E2%8D%A5%E2%8C%BD)%20%27abab%27&run00:45:16 Atop: https://apl.wiki/Tacit_programming#2-trains00:47:10 Ian Clark's suggestion of keeping tacit away from beginners: http://www.jsoftware.com/pipermail/beta/2021-November/010151.html00:49:10 Needing to isolate tacit functions: https://apl.wiki/Tacit_programming#Trains00:53:20 Stephen's favourite tacit function: https://tryapl.org/?clear&q=%E2%8E%95IO%E2%86%900%20%E2%8B%84%20(%E2%8A%83%E2%86%93%E2%88%98%E2%8D%B3%2F)%205%2011&run00:56:40 Stephen's blog post: https://www.5jt.com/the-rest-is-silence00:59:35 Marshall Lochbaum's bird combinator list: https://mlochbaum.github.io/BQN/doc/birds.html01:00:25 Plus-minus: https://tryapl.org/?clear&q=10%20(%2B%2C-)%202&run01:02:00 Bob's favourite tacit construct: https://tio.run/##HcpLCoAgFEbhrfzDK2gDcQUtoD0oXXsg3kFaBNLWex34Zme93xyINJq6YD4WGPoOmSdfFskgoyARDlFSkoNHhBOkFcrM8GGTVAtj96kyqP2vsQ801:06:26 Over: https://apl.wiki/Over01:08:05 Split-compose: https://apl.wiki/Reverse_Compose#Common_usage01:11:00 Bob's video: https://youtu.be/gidit2Yx2F8

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 / Tatin: TBA00:09:05 Hashback #! scripting presentation: TBA00:09:05 Link presentation: TBA00:11:27 Rodrigo's presentation on Py'n'APL: TBA00:14:10 C++ compiler explorer: https://godbolt.org/00:21:00 Ken Iverson's “Notation as a Tool of Thought” Paper (pdf): https://www.eecg.utoronto.ca/~jzhu/csc326/readings/iverson.pdf00:27:21 Kimmo Linna's RSConnect: https://github.com/kimmolinna/rsconnect00:29:15 TamStat: http://www.tamstat.com/00:33:24 CodeGolf website: http://codegolf.stackexchange.com/00:33:59 The APL Orchard: The APL Orchard00:53:51 Aaron Hsu on “The Fallacy of Unit Testing”: https://www.sacrideo.us/the-fallacy-of-unit-testing/

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: https://apl.wiki/Morten_Kromberg00:02:51 Dyalog Ltd.: https://apl.wiki/Dyalog_Ltd.00:04:11 Gitte Christensen: https://apl.wiki/Gitte_Christensen00:04:59 John Scholes: https://apl.wiki/John_Scholes00:04:59 Dan Baronet: https://apl.wiki/Dan_Baronet00:05:53 Pearly gates: https://en.wikipedia.org/wiki/Pearly_gates00:06:22 Galactic Emperor: https://www.jsoftware.com/papers/50/50_49.htm00:06:22 Monument quality code: https://forums.dyalog.com/viewtopic.php?f=30&t=1638&p=6456&hilit=monument#p645300:06:58 Rob Hodgkinson's response: https://www.jsoftware.com/pipermail/programming/2021-October/059124.html00:08:50 I.P. Sharp Associates: https://apl.wiki/I.P._Sharp_Associates00:09:51 Arthur Whitney: https://apl.wiki/Arthur_Whitney00:11:30 Adaytum: https://www.computerweekly.com/feature/Cognos-acquires-Adaytum-and-bolsters-performance-management-agenda00:12:16 Jsoftware: https://apl.wiki/Jsoftware00:13:05 Cognos: https://en.wikipedia.org/wiki/Cognos00:14:24 Dfns: https://apl.wiki/Dfn00:14:24 First axis emphasis: https://apl.wiki/Leading_axis_theory00:14:24 Sharp APL: https://apl.wiki/Sharp_APL00:15:59 Ravel: https://apl.wiki/Ravel00:15:59 Table function: https://apl.wiki/Table00:16:35 Identity functions: https://apl.wiki/Same00:16:35 Take: https://apl.wiki/Take00:16:35 Take: https://apl.wiki/Drop00:16:35 Take: https://apl.wiki/Index_(function)00:16:59 Dyadic Iota: https://apl.wiki/Index_of00:16:59 Rank operator: https://apl.wiki/Rank_(operator)00:16:59 Key operator: https://apl.wiki/Key00:16:59 Tally: https://apl.wiki/Tally00:16:59 Function trains: https://apl.wiki/Trains00:16:59 Where: https://apl.wiki/Where00:16:59 Interval Index: https://apl.wiki/Interval_Index00:16:59 J forums: https://code.jsoftware.com/wiki/System/Forums00:17:47 Over and Atop: https://apl.wiki/Function_composition00:17:47 Unique Mask: https://apl.wiki/Unique_Mask00:17:47 Under: https://wiki.jsoftware.com/wiki/Essays/Under00:17:47 Obverse: https://code.jsoftware.com/wiki/Vocabulary/codot00:18:21 APL2: https://apl.wiki/APL200:18:56 Tacit programming: https://apl.wiki/Tacit_programming00:18:56 Stencil: https://apl.wiki/Stencil00:19:49 History of Programming Languages: https://aplwiki.com/wiki/HOPL00:19:49 HOPL APL paper: https://dl.acm.org/doi/pdf/10.1145/338631900:20:30 Roger's presentation: https://www.pldi21.org/prerecorded_hopl.2.html00:21:57 Total Array Ordering: https://apl.wiki/Total_array_ordering00:21:57 Jay Foad: https://apl.wiki/Jay_Foad00:23:02 Structural Under and Mathematical Under: https://mlochbaum.github.io/BQN/spec/inferred.html#under00:23:02 APL\360 https://apl.wiki/APL\36000:25:11 Tacit modifiers: https://code.jsoftware.com/wiki/Vocabulary/fork#invisiblemodifiers00:28:41 Henry on this podcast: https://www.arraycast.com/episodes/episode-06-henry-richs-deep-dive-into-j00:30:14 HOPL video: https://www.pldi21.org/prerecorded_hopl.2.html00:31:26 J wiki: https://code.jsoftware.com00:31:41 Essays: https://code.jsoftware.com/wiki/Essays00:31:41 Papers: https://www.jsoftware.com/papers/00:36:47 Hook Conjunctions?: https://code.jsoftware.com/wiki/Essays/Hook_Conjunction%3F00:38:54 Wikipedia contributions: https://xtools.wmflabs.org/ec/en.wikipedia.org/Roger_Hui00:39:37 Jim Brown: https://apl.wiki/Jim_Brown00:40:53 88 Hats: https://code.jsoftware.com/wiki/Essays/88_Hats00:41:39 Catalan numbers video series: https://www.youtube.com/playlist?list=PL275xqeqDUOiOQb8Vic-E_ocq10EC_ELQ00:43:44 Phrasal Forms: https://www.jsoftware.com/papers/fork.htm00:47:06 Jokes We Told Each Other: https://www.jsoftware.com/papers/Jokes.htm00:50:49 APL Puns: https://www.dyalog.com/blog/2015/12/apl-puns/00:50:49 NASA oral histories: https://historycollection.jsc.nasa.gov/JSCHistoryPortal/history/oral_histories/NASA_HQ/SMD/MorrisonDD/MorrisonDD_5-9-17.htm00:53:14 Edits on tiny symbols: https://code.jsoftware.com/mediawiki/index.php?limit=50&title=Special%3AContributions&contribs=user&target=Roger+Hui&namespace=6&tagfilter=&start=2021-07-12&end=00:56:31 Richard Stallman: https://apl.wiki/Richard_Stallman01:01:51 Paw and Hoof: https://www.jsoftware.com/papers/APLDictionary1.htm#tab101:02:22 Log symbol: https://aplwiki.com/wiki/Natural_Logarithm01:04:06 RIDE support for ``ewok ``wookie ``r2d2: https://github.com/Dyalog/ride/commit/d9e7d5c546c9951b2aaea9f7594150d04b2f81b9