The Array Cast

Array Cast - September 16, 2022 Show NotesMany thanks to Bob Therriault for gathering these links:[01] 00:02:20 Iverson College Workshop https://community.kx.com/t5/New-kdb-q-users-question-forum/Vector-programming-in-q-online-workshop-Sun-25-Sep/td-p/13067[02] 00:03:18 Jot dot times https://apl.news/[03] 00:03:40 APLQuest https://www.youtube.com/playlist?list=PLYKQVqyrAEj9zSwnh4K28nCApruWA1j_m[04] 00:04:22 APL Barcelona Meetup https://aplwiki.com/wiki/APL_∊_BCN#Historical_APL_paper_reading_group Meetup https://www.meetup.com/apl-bcn/events/287974824/[06] 00:05:15 Paul Mansour's Blog https://www.toolofthought.com/posts[07] 00:05:34 APLwiki Blogs https://aplwiki.com/wiki/Blogs[08] 00:07:50 Conor's talk from Toronto Meetup https://youtu.be/8ynsN4nJxzU[09] 00:09:26 IEEE Spectrum Language List https://spectrum.ieee.org/top-programming-languages-2022[10] 00:15:05 TIOBE Language list https://www.tiobe.com/tiobe-index/[11] 00:15:55 Stack Overflow Language list https://survey.stackoverflow.co/2022/[12] 00:16:45 The Array Cast Episode #1 https://www.arraycast.com/episodes/episode-00-why-i-like-array-languages[13] 00:17:08 Conor's Array Language Comparison https://github.com/codereport/array-language-comparisons[14] 00:18:00 k programming language https://k.miraheze.org/wiki/Learning_Resources[15] 00:18:40 Nial https://www.nial-array-language.org/[16] 00:20:40 Iverson Notation https://apl.wiki/Iverson_Notation[17] 00:21:45 APL2 https://aplwiki.com/wiki/APL2 Jim Brown https://aplwiki.com/wiki/Jim_Brown[18] 00:25:11 Transpose https://aplwiki.com/wiki/Transpose[19] 00:26:00 Reshape https://aplwiki.com/wiki/Reshape[20] 00:29:00 X matrix tweet https://twitter.com/code_report/status/1564757140513996801 J complex copying https://code.jsoftware.com/wiki/Vocabulary/number#dyadic[21] 00:32:06 Roger Hui https://aplwiki.com/wiki/Roger_Hui[22] 00:38:15 Marshall's Outer Product Lambdaconf https://www.youtube.com/watch?v=WlUHw4hC4OY[23] 00:39:08 Ken Iverson https://aplwiki.com/wiki/Ken_Iverson[24] 00:41:38 Julia https://julialang.org/ Numpy https://numpy.org/ Matlab https://www.mathworks.com/products/matlab.html LAPACK https://netlib.org/lapack/ Single Assignment C https://www.sac-home.org/index[25] 00:42:20 APL\360 https://aplwiki.com/wiki/APL%5C360[26] 00:45:57 q programming language https://code.kx.com/q/[27] 00:47:07 rank in q https://community.kx.com/t5/kdb-and-q/Iterating-lists-and-dictionaries/m-p/13065#M141[28] 00:50:40 Arthur Whitney https://aplwiki.com/wiki/Arthur_Whitney[29] 00:58:45 PHP https://www.php.net/[30] 00:59:27 JavaScript https://www.javascript.com/[31] 01:01:40 Lisp https://en.wikipedia.org/wiki/Lisp_(programming_language)[32] 01:02:25 BQN https://mlochbaum.github.io/BQN/[33] 01:04:38 Venn Diagram https://en.wikipedia.org/wiki/Venn_diagram[34] 01:07:50 Futhark https://futhark-lang.org/[35] 01:08:36 Combinators https://writings.stephenwolfram.com/2020/12/combinators-and-the-story-of-computation/[36] 01:10:24 Cosy http://www.cosy.com/language/ Haskell https://www.haskell.org/[37] 01:14:14 F# https://fsharp.org/[38] 01:22:10 Leading Axis theory https://aplwiki.com/wiki/Leading_axis_theory[39] 01:23:40 Rank Polymorphism https://prl.ccs.neu.edu/blog/2017/05/04/rank-polymorphism/#:~:text=Each%20of%20these%20use%20cases,arguments%20and%20one%20scalar%20argument.[40] 01:24:40 Diagrams on Youtube https://www.youtube.com/watch?v=qEywreN02ng Tweet of Diagram https://twitter.com/code_report/status/1569741807285567492/photo/1 Updated Tweet of Diagram https://twitter.com/code_report/status/1570069385548537857/photo/1[41] 01:26:06 contact@ArrayCast.com[42] 01:26:56 Array programming influences https://aplwiki.com/wiki/Family_tree_of_array_languages[43] 01:27:20 BQN list of functional languages https://mlochbaum.github.io/BQN/doc/functional.html

Array Cast - September 2, 2022 Show NotesMany thanks to Bob Therriault for gathering these links:[01] 00:02:10 Dyalog winners https://www.dyalog.com/news/151/420/2022-APL-Problem-Solving-Competition-Winners.htm Contact@ArrayCast.com Transcript Producer?[02] 00:03:43 Rodrigo's episode https://www.arraycast.com/episodes/episode20-rodrigo-girao-serrao Hi res J icon https://code.jsoftware.com/wiki/J_Logos[03] 00:04:10 J reference card USLetter https://code.jsoftware.com/wiki/File:B.USLETTER.pdf A4 https://code.jsoftware.com/wiki/File:B.A4.pdf[04] 00:04:37 Jwiki video https://www.youtube.com/watch?v=x2hsnuxK79c Jwiki blue wiki sign up https://code.jsoftware.com/wiki/About Jwiki yellow wiki sign up https://code2.jsoftware.com/wiki/About[05] 00:06:21 New York Meet-up https://www.meetup.com/programming-languages-toronto-meetup/events/287729348/[06] 00:07:00 IPSA https://en.wikipedia.org/wiki/I._P._Sharp_Associates[07] 00:07:46 Carleton University https://carleton.ca[08] 00:08:50 Data Processing Institute https://dpi-canada.com/about-us/our-history/[09] 00:09:00 Cluster Analysis https://en.wikipedia.org/wiki/Cluster_analysis[10] 00:10:30 Ian Sharp https://aplwiki.com/wiki/Ian_Sharp[11] 00:14:30 IBM 2741 https://en.wikipedia.org/wiki/IBM_2741#APL\360[12] 00:17:07 Larry Breed https://en.wikipedia.org/wiki/Lawrence_M._Breed[13] 00:17:13 Eric Iverson https://aplwiki.com/wiki/Eric_Iverson[14] 00:18:32 Ken Iverson https://aplwiki.com/wiki/Ken_Iverson[15] 00:18:40 APL Quote Quad https://aplwiki.com/wiki/APL_Quote_Quad[16] 00:22:00 Dome Petrolium https://en.wikipedia.org/wiki/Dome_Petroleum[17] 00:25:45 Arthur Whitney https://en.wikipedia.org/wiki/Arthur_Whitney_(computer_scientist)[18] 00:26:30 Roger Hui https://en.wikipedia.org/wiki/Roger_Hui[19] 00:35:30 Massey Ferguson https://www.masseyferguson.com/en.html[20] 00:39:20 Morgan Stanley https://www.morganstanley.com/[21] 00:41:25 The IP Sharp Zoo https://video.dyalog.com/Dyalog16/?v=1N_oYD-ZkX8[22] 00:42:30 Bryce Adelstein Lelbach https://cpp.chat/guests/bryce_adelstein_lelbach/[23] 00:44:33 McGraw Hill https://www.mheducation.com/[24] 00:54:50 Clay Christensen https://en.wikipedia.org/wiki/Clayton_Christensen[24] 00:55:00 Innovator's Dilemma https://en.wikipedia.org/wiki/The_Innovator%27s_Dilemma[26] 00:56:30 Innovation Graph https://web.mit.edu/6.933/www/Fall2000/teradyne/clay.html[27] 00:58:49 VisiCalc https://en.wikipedia.org/wiki/VisiCalc Excel https://en.wikipedia.org/wiki/Microsoft_Excel[28] 00:59:40 2nd Generation operators https://aplwiki.com/wiki/Operator[29] 01:04:30 Roger with Grade 7's http://www.jsoftware.com/pipermail/chat/2011-December/004546.html[30] 01:04:50 WII Gaming https://en.wikipedia.org/wiki/Wii[31] 01:07:30 Terry Tao https://en.wikipedia.org/wiki/Terence_Tao[32] 01:10:05 Women in Computing https://en.wikipedia.org/wiki/Women_in_computing[33] 01:15:38 BQN https://aplwiki.com/wiki/BQN[34] 01:20:10 Contact@ArrayCast.com Transcript Producer?[35] 01:21:00 TryAPL https://tryapl.org/

Array Cast - August 19, 2022 Show NotesMany thanks to Marshall Lochbaum, Rodrigo Girão Serrão, Bob Therriault, Conor Hoekstra, Adám Brudzewsky and Romilly Cocking for gathering these links:[01] 00:00:03 BYTE magazine https://en.wikipedia.org/wiki/Byte_(magazine)[02] 00:01:02 Org Mode https://orgmode.org/[03] 00:02:58 Toronto Meet-up https://www.meetup.com/en-AU/programming-languages-toronto-meetup/events/287695788/ New York Meet-up https://www.meetup.com/programming-languages-toronto-meetup/events/287729348/[04] 00:04:19 Morten Kromberg episode https://www.arraycast.com/episodes/episode21-morten-kromberg[05] 00:05:01 Romilly's video 'An Excellent Return' https://dyalog.tv/Dyalog08/?v=thr-7QfQWJw[06] 00:06:12 Ferranti Pegasus computer https://en.wikipedia.org/wiki/Ferranti_Pegasus[07] 00:09:09 System 360 in APL http://keiapl.org/archive/APL360_UsersMan_Aug1968.pdf[08] 00:16:50 Mind Map https://en.wikipedia.org/wiki/Mind_map[09] 00:17:00 Dyalog https://www.dyalog.com/[10] 00:18:20 Digitalk https://winworldpc.com/product/digital-smalltalk/5x[11] 00:18:30 Smalltalk https://en.wikipedia.org/wiki/Smalltalk[12] 00:21:17 Raspberry Pi https://www.raspberrypi.org/[13] 00:22:10 Robotics on Dyalog website https://www.dyalog.com/blog/2014/08/dancing-with-the-bots/[14] 00:22:45 Neural Network https://en.wikipedia.org/wiki/Neural_network David Marr https://en.wikipedia.org/wiki/David_Marr_(neuroscientist)[15] 00:23:21 Jetson Nano https://www.nvidia.com/en-us/autonomous-machines/embedded-systems/jetson-nano/[16] 00:23:38 Spiking neural networks https://en.wikipedia.org/wiki/Spiking_neural_network[17] 00:24:02 JAX https://jax.readthedocs.io/en/latest/notebooks/quickstart.html[18] 00:27:00 Numpy https://numpy.org/[19] 00:28:21 Nested arrays https://aplwiki.com/wiki/Nested_array[20] 00:29:07 flip Numpy https://numpy.org/doc/stable/reference/generated/numpy.flip.html flipud https://numpy.org/doc/stable/reference/generated/numpy.flipud.html#numpy.flipud[21] 00:31:07 Pegasus Autocode http://blog.rareschool.com/2014/09/pegasus-autocode-revisited.html[22] 00:32:05 Atlas computer 1966 https://en.wikipedia.org/wiki/Atlas_(computer)[23] 00:34:30 Raspberry Pi pico https://www.raspberrypi.com/products/raspberry-pi-pico/[24] 00:36:33 Booker and Morris https://dl.acm.org/doi/pdf/10.1145/364520.364521[25] 00:38:12 Romilly's Blog Markdown http://blog.rareschool.com/2022/05/apl-and-python-go-head-to-head.html[26] 00:41:30 Languages that are built from concatenation https://en.wikipedia.org/wiki/Agglutination[27] 00:44:30 Alan Kay https://en.wikipedia.org/wiki/Alan_Kay[28] 00:47:12 Clojure https://en.wikipedia.org/wiki/Alan_Kay Forth https://en.wikipedia.org/wiki/Forth_(programming_language) Haskell https://www.haskell.org/[29] 00:50:00 Cosy http://www.cosy.com/language/[30] 00:51:38 Py'n'APL https://dyalog.tv/Dyalog21/?v=gOUFXBUMv_A[31] 01:00:12 Logic Analyzer https://en.wikipedia.org/wiki/Logic_analyzer[32] 01:02:15 Back propagation in neural networks https://en.wikipedia.org/wiki/Backpropagation[33] 01:07:38 Stefan Kruger 'Learn APL' https://xpqz.github.io/learnapl/intro.html[34] 01:08:10 Rodrigo Girão Serrão videos https://www.youtube.com/channel/UCd_24S_cYacw6zrvws43AWg[35] 01:08:27 João Araújo episode https://www.arraycast.com/episodes/episode33-joao-araujo[36] 01:08:59 Rodrigo Girão Serrão Neural networks https://www.youtube.com/playlist?list=PLgTqamKi1MS3p-O0QAgjv5vt4NY5OgpiM[37] 01:10:55 Functional Geekery podcast https://www.functionalgeekery.com/[38] 01:11:36 Conor's Security talk https://www.youtube.com/watch?v=ajGX7odA87k[39] 01:12:38 SICP https://en.wikipedia.org/wiki/Structure_and_Interpretation_of_Computer_Programs[40] 01:12:55 Alan McKean Rebecca Wirfs-Brock "Object Design" https://books.google.ca/books?id=vUF72vN5MY8C&printsec=copyright&redir_esc=y#v=onepage&q&f=false[41] 01:13:35 Growing Object Oriented Guided by Tests http://www.growing-object-oriented-software.com/[42] 01:15:01 Design Patterns vs Anti pattern in APL https://www.youtube.com/watch?v=v7Mt0GYHU9A[43] 01:18:25 Pop2 https://hopl.info/showlanguage.prx?exp=298&language=POP-2 Pop2 on pdf-11 https://www.cs.bham.ac.uk/research/projects/poplog/retrieved/adrian-howard-pop11.html[44] 01:18:52 Donald Michie https://en.wikipedia.org/wiki/Donald_Michie[45] 01:21:30 Menace robot http://chalkdustmagazine.com/features/menace-machine-educable-noughts-crosses-engine/[46] 01:22:05 Menace in APL https://romilly.github.io/o-x-o/an-introduction.html

Array Cast - August 5, 2022 Show NotesMany thanks to Bob Therriault, João Araújo and Rodrigo Girão Serrão for gathering these links:[01] 00:01:40 J wiki features https://www.youtube.com/watch?v=dWqixYyb52Q[02] 00:02:31 J promo video https://www.youtube.com/watch?v=vxibe2QOA0s[03] 00:03:00 British APL Association https://britishaplassociation.org/              Vector https://vector.org.uk/[04] 00:03:27 Conor's Twin Algorithms presentation https://www.youtube.com/watch?v=NiferfBvN3s[05] 00:08:13 Numpy https://numpy.org/              JAX https://jax.readthedocs.io/en/latest/notebooks/quickstart.html              Julia https://julialang.org/[06] 00:08:49 João's array Google search engine https://cse.google.com/cse?cx=e5ff9c06c246f4ca5[07] 00:09:00 João's Iverson mirror site https://joaogui1.github.io/keiapl/              Original link http://keiapl.org/[08] 00:11:55 João's website https://joaogui1.netlify.app/[09] 00:13:10 BQN https://mlochbaum.github.io/BQN/              Dyalog APL https://www.dyalog.com/              J https://www.jsoftware.com/indexno.html[10] 00:13:50 Vannevar Bush  https://en.wikipedia.org/wiki/Vannevar_Bush              Alan Kay https://en.wikipedia.org/wiki/Alan_Kay[11] 00:14:13 Tool for Thought Rocks https://lu.ma/toolsforthoughtrockshttps://www.youtube.com/c/ToolsforThoughtRocks?app=desktop[12] 00:14:40 Obsidian discord https://discord.com/invite/veuWUTm[13] 00:15:10 Roam https://roamresearch.com/              Obsidian https://obsidian.md/              Logseq https://logseq.com/[14] 00:17:01 Anki https://logseq.com/              Muse https://museapp.com/[15] 00:18:25 Notion https://www.notion.so/              Remnote https://www.remnote.com/[16] 00:19:42 Marshall's BQN Markdown  https://github.com/mlochbaum/BQN/blob/master/md.bqn[17] 00:22:06 Perlis https://en.wikipedia.org/wiki/Alan_Perlis[18] 00:22:49 Array Thinking https://www.arraycast.com/episodes/episode-00-why-i-like-array-languages[19] 00:24:50 Folds https://en.wikipedia.org/wiki/Fold_(higher-order_function)[20] 00:25:51 Rank concept https://aplwiki.com/wiki/Function_rank[22] 00:26:57 Short Term Memory https://www.simplypsychology.org/short-term-memory.html[23] 00:27:42 APL glyphs https://aplwiki.com/wiki/Typing_glyphs#By_method[24] 00:28:59 Stefan Kruger 'Learn APL' https://xpqz.github.io/learnapl/intro.html              Rodrigo Girão Serrão 'Mastering Dyalog APL' https://mastering.dyalog.com/README.html[25] 00:29:35 Quarto https://quarto.org/[26] 00:32:33 Conor's original solution {≢∪⍵~0} Y[27] 00:32:40 Without APL ~              Without J -.[28] 00:32:50 BQN Without ¬∘∊/⊣[29] 00:33:55 Set Intersection APL X{⍺⌿⍨(≢⍵)≥⍵⍳⍺}Y              Set Intersection J  x (e. # [) y              Set Union APL X{⍺⍪⍵⌿⍨(≢⍺)<⍺⍳⍵}Y              Set Union J  x (] , -.) y[30] 00:34:40 ReBQN https://mlochbaum.github.io/BQN/doc/rebqn.html[31] 00:36:21 Original Leetcode Problem https://leetcode.com/problems/make-array-zero-by-subtracting-equal-amounts/[32] 00:41:38 R https://en.wikipedia.org/wiki/R_(programming_language)[33] 00:45:11 Paper: Attention is All That You Need https://arxiv.org/abs/1706.03762[34] 00:50:45 Mylenation https://en.wikipedia.org/wiki/Myelin[35] 00:50:58 Jeremy Howard episode https://www.arraycast.com/episodes/episode31-jeremy-howard[36] 00:55:08 Array Cast Show Notes https://www.arraycast.com/episode-33-show-notes[37] 00:58:17 Reflection for deep learning https://www.tru.ca/__shared/assets/fostering-student-reflection-for-deeper-learning49355.pdf[38] 00:59:11 Dyalog User Meeting https://www.dyalog.com/user-meetings/dyalog22.htm[39] 00:59:30 CPP North https://cppnorth.ca/[40] 01:01:09 Ready Player One https://en.wikipedia.org/wiki/Ready_Player_One[41] 01:01:24 Gathertown https://www.gather.town/[42] 01:02:10 vrchat https://hello.vrchat.com/[43] 01:04:10 APL Quest https://aplwiki.com/wiki/APL_Quest[44] 01:06:47 Arthur Whitney https://en.wikipedia.org/wiki/Arthur_Whitney_(computer_scientist)[45] 01:07:05 2014 J conference https://code.jsoftware.com/wiki/Community/Conference2014#Speakers[46] 01:08:09 Dyalog videos https://dyalog.tv/Webinar/?v=jBxQZemmA1w[47] 01:09:10 APL Seeds https://www.dyalog.com/apl-seeds-user-meetings/aplseeds22.htm[48] 01:10:00 contact@arraycast.com (edited) 

Array Cast - July 22, 2022 Show NotesMany thanks to Bob Therriault, Marshall Lochbaum and Adám Brudzewsky for gathering these links:[01] 00:01:10 Dyalog Problem /solving Contest https://contest.dyalog.com/?goto=welcome[02] 00:01:35 Dyalog Early Bird Discount https://www.dyalog.com/user-meetings/dyalog22.htm[03] 00:03:50 Iverson Notation https://apl.wiki/Iverson_Notation[04] 00:05:06 GOTO in Early APL https://www.jsoftware.com/papers/APL1.htm#1.2[05] 00:06:06 Control Structures https://en.wikipedia.org/wiki/Control_flow[06] 00:08:33 Goto in APL https://aplwiki.com/wiki/Branch[07] 00:09:45 Goto in J https://code.jsoftware.com/wiki/Vocabulary/gotodot[08] 00:09:55 try. catch. throw. in J https://code.jsoftware.com/wiki/Vocabulary/trydot[09] 00:10:46 whilst. in J https://code.jsoftware.com/wiki/Vocabulary/whiledot [10] 00:14:09 APL Control Structures https://aplwiki.com/wiki/Control_structure[11] 00:17:43 J Control Structures https://code.jsoftware.com/wiki/Vocabulary/ControlStructures[12] 00:18:00 if. else. elseif. do. end. in J https://code.jsoftware.com/wiki/Vocabulary/ifdot[13] 00:20:40 singleton in APL https://aplwiki.com/wiki/Singleton[14] 00:21:01 for. for_ijk. in J https://code.jsoftware.com/wiki/Vocabulary/fordot[15] 00:23:45 Go language for loop syntax https://go.dev/tour/flowcontrol/1[16] 00:25:22 Javascript Mapping arguments] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map#syntax[17] 00:26:21 Clojure Mapping https://clojuredocs.org/clojure.core/map[18] 00:27:40 BQN Control Structures https://mlochbaum.github.io/BQN/doc/control.html[19] 00:28:20 BQN Blocks https://mlochbaum.github.io/BQN/doc/block.html[20] 00:28:49 BQN ? predicate https://mlochbaum.github.io/BQN/doc/block.html#predicates[22] 00:31:05 APL if else operands https://dfns.dyalog.com/n_else.htm[23] 00:31:42 BQN Stranded Block functions https://mlochbaum.github.io/BQN/doc/control.html#switch-case[24] 00:32:30 APL Arguments and Operands https://aplwiki.com/wiki/Operand[25] 00:36:00 Dfn Dop https://help.dyalog.com/latest/#Language/Defined%20Functions%20and%20Operators/DynamicFunctions/Dynamic%20Operators.htm[26] 00:36:45 BQN Block definition and modifiers https://mlochbaum.github.io/BQN/doc/block.html[27] 00:38:15 Power Operator APL https://aplwiki.com/wiki/Power_(operator) J https://code.jsoftware.com/wiki/Vocabulary/hatco BQN https://mlochbaum.github.io/BQN/doc/repeat.html[28] 00:41:30 k/Q Control Structures https://code.kx.com/q/ref/cond/[29] 00:43:25 power operator in q https://code.kx.com/q/ref/do/ for in k ⍣n/^:n: https://k.miraheze.org/wiki/For fixed point in k ⍣≡/^:_: https://k.miraheze.org/wiki/Fixedpoint[30] 00:43:40 if in q https://code.kx.com/q/ref/if/[31] 00:44:20 while in q https://code.kx.com/q/ref/while/[32] 00:45:38 Replicate kludge example of if: in APL https://tryapl.org/?clear&q=a%E2%86%9010%20%E2%8B%84%20%E2%8D%8E(5%3C3)%2F%27a%E2%86%90a%2B1%27%20%E2%8B%84%20%E2%8E%95%E2%86%90a%20%E2%8B%84%20%E2%8D%8E(5%E2%89%A03)%2F%27a%E2%86%90a%2B1%27%20%E2%8B%84%20%E2%8E%95%E2%86%90a&run[33] 00:51:00 J's z locale https://code.jsoftware.com/wiki/Vocabulary/ZeeLocale[34] 00:52:29 Dfn guard example https://aplwiki.com/wiki/Dfn#Guards[35] 00:54:20 Game of life with power operator https://tio.run/##SyzI0U2pTMzJT///3z3fR@FR2wSFam19nUe9W2sf9ewyVjB@1NF1aIWxtoHOoRWPuhb9//@obypQUWZeZklmYg6Qpf6od7667aO2iY969j7qnQdHXIe2H9oOlDu0nQtMQphgGsaEQC5dXV0ukN1QM8F8DaDAo97FRprYRI3hogA[36] 00:56:40 BQN power operator without infinity https://mlochbaum.github.io/BQN/doc/repeat.html[37] 00:58:34 Recursion in BQN https://mlochbaum.github.io/BQN/doc/block.html#self-reference[38] 00:59:20 CBQN System ._While_ https://github.com/dzaima/CBQN/blob/master/docs/system.md#_while_[39] 01:03:30 APL with power match https://aplwiki.com/wiki/Power_(operator)#Examples[40] 01:04:13 J power operator with infinity https://code.jsoftware.com/wiki/Vocabulary/hatco#u.5E:_.28Converge.29[41] 01:08:24 Example of power applied when it shouldn't (argument > test point) https://tryapl.org/?clear&q=1%2B%E2%8D%A3%7B%E2%8D%BA%3E10%7D10&run[42] 01:10:20 Example of Rank or each to simulate loops https://tio.run/##SyzI0U2pTMzJT///v/pR39RHbRPUA4ryk1OLizPz0tV1HvVurT20wtBAwchAwdjg/38A[43] 01:13:19 Conor's example of 2 to the power of 2 repeated until over 1000 APL solution https://tryapl.org/?clear&q=%C3%97%E2%8D%A8%E2%8D%A3%7B%E2%8D%BA%3E1000%7D2&run J solution https://jsoftware.github.io/j-playground/bin/html2/#code=t%3D%3A%20*%3A%5E%3A%28%3C%261000%29%5E%3A_%0At%202 BQN solution https://mlochbaum.github.io/BQN/try.html#code=X3doaWxlX+KGkHvwnZS94o2f8J2UvuKImPCdlL1f8J2Vo1/wnZS+4oiY8J2UveKNn/CdlL7wnZWpfQrDl8ucX3doaWxlXyg84p+cMTAwMCkgMg==[44] 01:15:21 Conor's example of 2 multiplied by 2 repeated until over 1000 APL solution https://tryapl.org/?clear&q=2%C3%97%E2%8D%A3%7B%E2%8D%BA%3E1000%7D2&run J solution https://jsoftware.github.io/j-playground/bin/html2/#code=t%3D%3A%20%2B%3A%5E%3A%28%3C%261000%29%5E%3A_%0At%202BQN solution https://mlochbaum.github.io/BQN/try.html#code=X3doaWxlX+KGkHvwnZS94o2f8J2UvuKImPCdlL1f8J2Vo1/wnZS+4oiY8J2UveKNn/CdlL7wnZWpfQory5xfd2hpbGVfKDzin5wxMDAwKSAy[45] 01:16:49 Adám's example to see the process using quad gets https://tio.run/##SyzI0U2pTMzJT////1Hf1EdtE4wOT3/Uu7gawnnUu0vhUe9WhUfdLUB6l52hgYFBrdH//wA[46] 01:19:28 Solution to solve problem with no execution if starting argument > 1000 APL solution https://tryapl.org/?clear&q=%7B2%C3%97%E2%8D%A3%7B%E2%8D%BA%3E1000%7D%E2%8D%A3(%E2%8D%B5%E2%89%A41000)%E2%8A%A2%E2%8D%B5%7D1001&run J solution https://jsoftware.github.io/j-playground/bin/html2/#code=t%3D%3A%20%2B%3A%20%5E%3A%28%3C%261000%29%20%5E%3A_%0At%201001BQN solution https://mlochbaum.github.io/BQN/try.html#code=X3doaWxlX+KGkHvwnZS94o2f8J2UvuKImPCdlL1f8J2Vo1/wnZS+4oiY8J2UveKNn/CdlL7wnZWpfQory5xfd2hpbGVfKDzin5wxMDAwKSAxMDAx[47] 01:23:10 Using logarithms to solve the problem APL solution https://tryapl.org/?clear&q=2*%E2%8C%882%E2%8D%9F1000%20%E2%8B%84%202%C3%97%E2%8D%A3(%E2%8C%88-%2F2%E2%8D%9F1000%202)%E2%8A%A22&run J solution https://jsoftware.github.io/j-playground/bin/html2/#code=t%3D%3A%20%5E%3E.%40%5E.%261000%0At%202BQN solution https://mlochbaum.github.io/BQN/try.html#code=4oyI4oy+KDLii4bigbziiqIpIDEwMDA=[48] 01:25:47 contact@arraycast.com[49] 01:26:24 Transpose Episode https://www.arraycast.com/episodes/episode29-transpose

Array Cast - July 8, 2022 Show Notes[01] 00:01:15 Dyalog Problem /solving Contest https://contest.dyalog.com/?goto=welcome[02] 00:01:35 Dyalog Early Bird Discount https://www.dyalog.com/user-meetings/dyalog22.htm[03] 00:02:40 Jeremy Howard wikipedia https://en.wikipedia.org/wiki/Jeremy_Howard_(entrepreneur) Fastmail https://www.fastmail.com/ Optimal Decisions Group https://www.finextra.com/newsarticle/18047/choicepoint-acquires-insurance-analytics-firm-optimal-decisions[04] 00:04:30 APL Study Group https://forums.fast.ai/t/apl-array-programming/97188[05] 00:05:50 McKinsey and Company https://en.wikipedia.org/wiki/McKinsey_%26_Company[06] 00:10:20 AT Kearney https://en.wikipedia.org/wiki/AT_Kearney[07] 00:12:33 MKL (Intel) https://en.wikipedia.org/wiki/Math_Kernel_Library[08] 00:13:00 BLAS http://www.netlib.org/blas/[09] 00:13:11 Perl BQN https://mlochbaum.github.io/BQN/running.html[10] 00:14:06 Raku https://en.wikipedia.org/wiki/Raku_%28programming_language%29[11] 00:15:45 kaggle https://www.kaggle.com/ kaggle competition https://www.kaggle.com/competitions/unimelb/leaderboard[12] 00:16:52 R https://en.wikipedia.org/wiki/R_(programming_language)[13] 00:18:50 Neural Networks https://en.wikipedia.org/wiki/Artificial_neural_network[14] 00:19:50 Enlitic https://www.enlitic.com/[15] 00:20:01 Fast.ai https://www.fast.ai/about/[16] 00:21:02 Numpy https://numpy.org/[17] 00:21:26 Leading Axis Theory https://aplwiki.com/wiki/Leading_axis_theory[18] 00:21:31 Rank Conjunction https://code.jsoftware.com/wiki/Vocabulary/quote[19] 00:21:40 Einstein notation https://en.wikipedia.org/wiki/Einstein_notation[20] 00:22:30 GPU https://en.wikipedia.org/wiki/Graphics_processing_unit[21] 00:22:55 CUDA https://en.wikipedia.org/wiki/CUDA[22] 00:23:30 Map https://en.wikipedia.org/wiki/Map_(higher-order_function)[23] 00:24:05 Data Science https://en.wikipedia.org/wiki/Data_science[24] 00:25:15 First Neural Network https://en.wikipedia.org/wiki/Frank_Rosenblatt[25] 00:28:51 Numpy Another Iverson Ghost https://dev.to/bakerjd99/numpy-another-iverson-ghost-9mc[26] 00:30:11 Pivot Tables https://en.wikipedia.org/wiki/Pivot_table[27] 00:30:36 SQL https://en.wikipedia.org/wiki/SQL[28] 00:31:25 Larry Wall "The three chief virtues of a programmer are: Laziness, Impatience and Hubris." From the glossary of the first Programming Perl book.[29] 00:32:00 Python https://www.python.org/[30] 00:36:25 Regular Expressions https://en.wikipedia.org/wiki/Regular_expression[31] 00:36:50 PyTorch https://pytorch.org/[32] 00:37:39 Notation as Tool of Thought https://www.jsoftware.com/papers/tot.htm[33] 00:37:55 Aaron Hsu codfns https://scholarworks.iu.edu/dspace/handle/2022/24749[34] 00:38:40 J https://www.jsoftware.com/#/[35] 00:39:06 Eric Iverson on Array Cast https://www.arraycast.com/episodes/episode10-eric-iverson[36] 00:40:18 Triangulation Jeremy Howard https://www.youtube.com/watch?v=hxB-rEQvBeM[37] 00:41:48 Google Brain https://en.wikipedia.org/wiki/Google_Brain[38] 00:42:30 RAPIDS https://rapids.ai/[39] 00:43:40 Julia https://julialang.org/[40] 00:43:50 llvm https://llvm.org/[41] 00:44:07 JAX https://jax.readthedocs.io/en/latest/notebooks/quickstart.html[42] 00:44:21 XLA https://www.tensorflow.org/xla[43] 00:44:32 MILAR https://www.tensorflow.org/mlir[44] 00:44:42 Chris Lattner https://en.wikipedia.org/wiki/Chris_Lattner[45] 00:44:53 Tensorflow https://www.tensorflow.org/[46] 00:49:33 torchscript https://pytorch.org/tutorials/beginner/Intro_to_TorchScript_tutorial.html[47] 00:50:09 Scheme https://en.wikipedia.org/wiki/Scheme_(programming_language)[48] 00:50:28 Swift https://en.wikipedia.org/wiki/Swift_(programming_language)[49] 00:51:10 DragonBox Algebra https://dragonbox.com/products/algebra-12[50] 00:52:47 APL Glyphs https://aplwiki.com/wiki/Glyph[51] 00:53:24 Dyalog APL https://www.dyalog.com/[52] 00:54:24 Jupyter https://jupyter.org/[53] 00:55:44 Jeremy's tweet of Meta Math https://twitter.com/jeremyphoward/status/1543738953391800320[54] 00:56:37 Power function https://aplwiki.com/wiki/Power_(function)[55] 01:03:06 Reshape ⍴ https://aplwiki.com/wiki/Reshape[56] 01:03:40 Stallman 'Rho, rho, rho' https://stallman.org/doggerel.html#APL[57] 01:04:20 APLcart https://aplcart.info/ BQNcrate https://mlochbaum.github.io/bqncrate/[58] 01:06:12 J for C programmers https://www.jsoftware.com/help/jforc/contents.htm[59] 01:07:54 Transpose episode https://www.arraycast.com/episodes/episode29-transpose[60] 01:10:00 APLcart video https://www.youtube.com/watch?v=r3owA7tfKE8[61] 01:12:28 Functional Programming https://en.wikipedia.org/wiki/Functional_programming[62] 01:13:00 List Comprehensions https://docs.python.org/3/tutorial/datastructures.html#list-comprehensions[63] 01:13:30 BQN to J https://mlochbaum.github.io/BQN/doc/fromJ.html BQN to Dyalog APL https://mlochbaum.github.io/BQN/doc/fromDyalog.html[64] 01:18:15 Einops https://cgarciae.github.io/einops/1-einops-basics/[65] 01:19:30 April Fools APL https://ci.tc39.es/preview/tc39/ecma262/sha/efb411f2f2a6f0e242849a8cc8d7e21bbcdff543/#sec-apl-expression-rules[66] 01:20:35 Flask library https://flask.palletsprojects.com/en/2.1.x/[67] 01:21:22 JuliaCon 2022 https://juliacon.org/2022/[68] 01:28:05 Myelination https://en.wikipedia.org/wiki/Myelin[69] 01:29:15 Sanyam Bhutani interview https://www.youtube.com/watch?v=g_6nQBsE4pU&t=2150s[70] 01:31:27 Jo Boaler Growth Mindset https://www.youcubed.org/resource/growth-mindset/[71] 01:33:45 Discovery Learning https://en.wikipedia.org/wiki/Discovery_learning[72] 01:37:05 Iverson Bracket https://en.wikipedia.org/wiki/Iverson_bracket[73] 01:39:14 Radek Osmulski Meta Learning https://rosmulski.gumroad.com/l/learn_machine_learning[74] 01:40:12 Top Down Learning https://medium.com/@jacksonbull1987/top-down-learning-4743f16d63d3[75] 01:41:20 Anki https://apps.ankiweb.net/[76] 01:43:50 Lex Fridman Interview https://www.youtube.com/watch?v=J6XcP4JOHmk Deep Talks #54 https://www.youtube.com/watch?v=n7YVlPszaWc0

Array Cast - June 24, 2022 Show NotesMany thanks to Adám Brudzewsky for gathering these links:[1] 00:01:00 APL logo: https://aplwiki.com/wiki/APL_logo[2] 00:01:05 Array Cast merch: https://www.redbubble.com/shop/ap/113247610[3] 00:01:35 Eso Lang Conf 2022: https://esolangconf.com/ Eso Lang Conf Twitter: https://twitter.com/EsolangT[4] 00:02:35 ADSP: The Podcast: https://adspthepodcast.com/[5] 00:03:10 Array Cast: https://aplwiki.com/wiki/Array_Cast[6] 00:05:10 Centenary of Iverson's birth: https://britishaplassociation.org/iverson-centenary-december-2020/[7] 00:10:29 APL Farm: https://apl.wiki/APL_Farm[8] 00:11:45 Conor's YouTube channel: https://www.youtube.com/code_report[9] 00:12:55 J: From C to C++20: https://www.youtube.com/playlist?list=PLVFrD1dmDdvfVhYLU_iKkV67X9XqCJLWe[10] 00:15:04 The third podcast: https://www.buzzsprout.com/1951960[11] 00:17:05 Functional Geekery: https://www.functionalgeekery.com/[12] 00:17:59 TryAPL: https://tryapl.org[13] 00:18:29 Joel Kaplan episode: https://www.arraycast.com/episodes/episode27-joel-kaplan[14] 00:18:54 Stevan Apter episode: https://www.arraycast.com/episodes/episode26-stevan-apter[15] 00:19:23 Rank episode: https://www.arraycast.com/episodes/episode28-rank-and-leading-axis[16] 00:19:54 CoRecursive podcase episode: https://corecursive.com/065-competitive-coding-with-conor-hoekstra/ Companion video: https://www.youtube.com/watch?v=lG-CcPb7ggU[17] 00:23:30 Readability: https://aplwiki.com/wiki/Readability[18] 00:35:48 Our website: https://arraycast.com[19] 00:36:42 J wiki: https://code.jsoftware.com/wiki J wiki search: https://code.jsoftware.com/wiki/Special:JwikiSearch[20] 00:37:26 Stephen Taylor's blog: https://5jt.com This episode's show-notes: https://www.arraycast.com/episode-30-show-notes[21] 00:38:33 J-APL table: http://sigapl.org/_J-Dyalog_APL_Rosetta.html[22] 00:41:05 First episode: https://www.arraycast.com/episodes/episode-00-why-i-like-array-languages[23] 00:41:30 Dyadic transpose episode: https://www.arraycast.com/episodes/episode29-transpose Dyadic hook episode: https://www.arraycast.com/episodes/episode17-tacit4-the-dyadic-hook[24] 00:41:41 Morten Kromberg: https://apl.wiki/Morten_Kromberg Morten Kromberg episode: https://www.arraycast.com/episodes/episode21-morten-kromberg[25] 00:41:51 Rank and leading axis episode: https://www.arraycast.com/episodes/episode28-rank-and-leading-axis[26] 00:42:16 Brooke Allen episode: https://www.arraycast.com/episodes/episode16-brooke-allen-a-life-of-adventure[27] 00:44:59 Cognicast podcast: https://cognitect.com/cognicast/[28] 00:45:19 Russ Olsen "To the Moon" talk: https://www.youtube.com/watch?v=4Sso4HtvJsw Russ Olsen on StoryTelling Cognicast episode: https://www.cognitect.com/cognicast/138[29] 00:46:16 Eric Iverson episode: https://www.arraycast.com/episodes/episode10-eric-iverson[30] 00:46:29 Henry Rich episode: https://www.arraycast.com/episodes/episode-06-henry-richs-deep-dive-into-j[32] 00:49:56 The tacit discussions: https://www.arraycast.com/episodes/episode-09-tacit-programming https://www.arraycast.com/episodes/episode11-why-tacit https://www.arraycast.com/episodes/episode15-tacit-3-and-other-topics https://www.arraycast.com/episodes/episode17-tacit4-the-dyadic-hook[33] 00:51:24 Memorial for Roger Hui episode: https://www.arraycast.com/episodes/episode13-roger-hui[34] 00:51:44 Aaron Hsu episode: https://www.arraycast.com/episodes/episode19-aaron-hsu[35] 00:51:50 Vanessa McHale episode: https://www.arraycast.com/episodes/episode25-vanessa-mchale[36] 00:53:36 J playground: https://jsoftware.github.io/j-playground/bin/html2/[37] 00:53:06 J Essays on J wiki: https://code.jsoftware.com/wiki/Essays[38] 00:57:18 Q notebooks online: https://learn.kx.com[39] 01:03:28 Email: contact@arraycast.com Twitter: @arraycast[40] 01:04:05 APL Orchard chat room: https://apl.wiki/APL_Orchard[41] 01:07:00 The APL Wiki: https://apl.wiki Learning resources: https://aplwiki.com/wiki/Learning_resources Jsoftware website: https://www.jsoftware.com/[42] 01:07:00 APLcart: https://apl.wiki/APLcart

Array Cast - June 10, 2022 Show Notes[01] 00:01:22 awesome-q.org https://github.com/StephenTaylor-Kx/awesome-q[02] 00:01:35 reddit/apljk https://www.reddit.com/r/apljk/comments/v5cr09/blog_post_square_joy_preorder/[03] 00:02:04 BQN keyboard https://gitlab.freedesktop.org/xkeyboard-config/xkeyboard-config/-/blob/master/symbols/bqn[04] 00:03:30 kx download https://kx.com/developers/download-licenses/[05] 00:04:46 aplfarm https://aplwiki.com/wiki/APL_Farm[06] 00:05:03 J Playground https://jsoftware.github.io/j-playground/bin/html2/[07] 00:05:30 Interpreters for Array languages" https://aplwiki.com/wiki/Running_APL[08] 00:06:06 List of array languages https://aplwiki.com/wiki/List_of_open-source_array_languages[09] 00:08:39 BQN https://mlochbaum.github.io/BQN/running.html[10] 00:09:32 Wiki Content https://aplwiki.com/wiki/APL_Wiki:Content_guidelines[11] 00:11:20 Ivy https://aplwiki.com/wiki/Ivy[12] 00:13:44 Episode 28 Rank and Leading Axis Theory https://www.arraycast.com/episodes/episode28-rank-and-leading-axis[13] 00:15:20 ⌿ Reduce First APL https://aplwiki.com/wiki/Reduce[14] 00:17:10 Scalar multiplication https://aplwiki.com/wiki/Times[15] 00:18:01 matrix multiplication https://en.wikipedia.org/wiki/Matrix_multiplication[16] 00:19:02 Rank https://aplwiki.com/wiki/Rank[17] 00:19:12 Axis operator https://apl.wiki/Iverson_notation[18] 00:21:42 Reduce https://aplwiki.com/wiki/Reduce[19] 00:23:30 Bracket axis https://aplwiki.com/wiki/Function_axis[20] 00:24:50 GnuAPL https://aplwiki.com/wiki/GNU_APL[21] 00:25:33 k-cells of array https://aplwiki.com/wiki/Frame[22] 00:26:20 each function https://aplwiki.com/wiki/Each[23] 00:26:35 Negative rank https://code.jsoftware.com/wiki/Essays/Negative_Rank[24] 00:29:11 ADSP podcast June 3 https://adspthepodcast.com/2022/06/03/Episode-80.html[25] 00:32:27 stride https://en.wikipedia.org/wiki/Stride_of_an_array[26] 00:34:17 transpose https://aplwiki.com/wiki/Transpose[27] 00:36:11 Monadic Transpose Bqn https://mlochbaum.github.io/BQN/doc/transpose.html APL https://aplwiki.com/wiki/Transpose J https://code.jsoftware.com/wiki/Vocabulary/barco[28] 00:37:28 APL ravel https://aplwiki.com/wiki/Ravel[29] 00:38:03 2 X 3 X 4 ravel to 6 X 4 Example BQN https://mlochbaum.github.io/BQN/try.html#code=dOKGkDLigL8z4oC/NOKliuKGlTI0IOKLhCDijYnipYrijokyIDHigL8y4oC/MOKNiXQ= APL https://tryapl.org/?clear&q=t%E2%86%902%203%204%E2%8D%B4%E2%8D%B324%20%E2%8B%84%20%E2%8D%89%2C%E2%8D%A42%E2%8A%A22%203%201%E2%8D%89t&run J https://jsoftware.github.io/j-playground/bin/html2/#code=t%3D.%20i.%202%203%204%0A%7C%3A%20%2C%222%20%5B%202%200%201%7C%3A%20t%0A%0A%0A[30] 00:41:19 Under https://code.jsoftware.com/wiki/Vocabulary/ampdot[31] 00:42:26 ,/ https://www.jsoftware.com/help/jforc/loopless_code_ii_adverbs__an.htm#_Toc191734361[32] 00:43:39 dyadic transpose BQN https://mlochbaum.github.io/BQN/doc/transpose.html Dyalog APL https://help.dyalog.com/latest/#Language/Primitive%20Functions/Transpose%20Dyadic.htm J https://code.jsoftware.com/wiki/Vocabulary/barco#dyadic[33] 00:47:00 Diagonal of matrix https://code.jsoftware.com/wiki/Vocabulary/Idioms#Extract_The_Diagonal_Of_A_Table[34] 00:47:52 50 shades of J https://code.jsoftware.com/wiki/Fifty_Shades_of_J/Chapter_8[35] 00:48:34 key adverb https://code.jsoftware.com/wiki/Vocabulary/slashdot#dyadic[36] 00:49:11 cells https://mlochbaum.github.io/BQN/doc/rank.html[37] 00:49:12 inverse https://mlochbaum.github.io/BQN/doc/undo.html[38] 00:49:30 each https://mlochbaum.github.io/BQN/doc/map.html[39] 00:49:48 each in J https://code.jsoftware.com/wiki/Essays/Under[40] 00:51:50 ,/ example BQN https://mlochbaum.github.io/BQN/try.html#code=dOKGkDLigL8z4oC/NOKliuKGlTI0IOKLhCDiiL7LnXQ= J https://jsoftware.github.io/j-playground/bin/html2/#code=t%3D.%20i.%202%203%204%0A%2C%2Ft%0A%24%20%2C%2Ft%0A%0A[41] 00:52:27 ,[⍳ 2] example https://tryapl.org/?clear&q=t%E2%86%902%203%204%E2%8D%B4%E2%8D%B324%20%E2%8B%84%20%2C%5B%E2%8D%B32%5Dt&run[42] 00:54:21 Interfaces APL https://tryapl.org/ BQN https://bqnpad.mechanize.systems J https://jsoftware.github.io/j-playground/bin/html2/[43] 00:55:02 i. 2 3 4 example[44] 00:56:12 Sharp APL https://aplwiki.com/wiki/SHARP_APL[45] 00:58:34 nested array model https://aplwiki.com/wiki/Nested_array flat array theory https://aplwiki.com/wiki/Array_model#Flat_array_theory[46] 00:59:44 numpy https://numpy.org/[47] 01:01:32 Fourier transform https://aplwiki.com/wiki/Fast_Fourier_transform[48] 01:03:20 Roger Hui transpose essay https://code.jsoftware.com/mediawiki/index.php/Essays/Transpose[49] 01:11:35 search for dyadic transpose https://cs.github.com/?scopeName=All+repos&scope=&q=language%3Aapl+%2F%5Cd+%5Cd+%5Cd%E2%8D%89%2F[50] 01:13:47 Stephen's paper on dyadic transpose rank 8 http://archive.vector.org.uk/art10500720

Array Cast - May 27, 2022 Show Notes[01] 00:02:00 APL logo https://aplwiki.com/wiki/APL_logo[02] 00:02:24 APL Merch On Bonfire: https://bonfire.com/store/apl-stuff/ On Redbubble: https://redbubble.com/shop/ap/111813275 Aaron Hsu's site: https://www.bonfire.com/store/arcfide/[03] 00:03:00 BQN FFI XXXXXXXXXX[04] 00:03:58 kx download https://kx.com/developers/download-licenses/[05] 00:04:20 kx download request mailto:trial@kx.com[06] 00:05:18 Rank https://aplwiki.com/wiki/Rank Leading Axis Theory https://aplwiki.com/wiki/Leading_axis_theory[07] 00:06:24 Adoption in APL https://aplwiki.com/wiki/Leading_axis_theory#Adoption_in_APL[08] 00:08:27 APL https://aplwiki.com/wiki/Main_Page BQN https://mlochbaum.github.io/BQN/ J https://www.jsoftware.com/#/README[09] 00:10:19 + Rank 0 https://aplwiki.com/wiki/Add Rank operator: https://apl.wiki/Rank_(operator) Multidimensional arrays: https://apl.wiki/Array_model Ravel order: https://apl.wiki/Ravel_order[10] 00:10:53 ≡ Match Rank Infinity https://aplwiki.com/wiki/Match APL: https://tryapl.org/?clear&q=a%E2%86%903%203%E2%8D%B4%E2%8D%B39%20%E2%8B%84%20b%E2%86%903%203%E2%8D%B4%E2%8D%B36%20%E2%8B%84%20a(%E2%89%A1%E2%8D%A41)b&run BQN: https://mlochbaum.github.io/BQN/try.html#code=YeKGkDPigL8z4qWKMSvihpU5IOKLhCBi4oaQM+KAvzPipYoxK+KGlTYg4ouEIGEg4omh4o6JMSBi J: https://jsoftware.github.io/j-playground/bin/html2/#code=a%3D%3A%20i.%203%203%0Ab%3D%3A%203%203%20%24%20i.%206%0Aa%20-%3A%221%20b%0A Function rank: https://apl.wiki/Function_rank Raze (;): https://apl.wiki/Raze[11] 00:12:23 Rank of verb in J https://www.jsoftware.com/help/jforc/loopless_code_i_verbs_have_r.htm#_Toc191734331 Rank of noun in J https://www.jsoftware.com/help/jforc/declarations.htm#_Toc191734319[12] 00:14:50 ". Do verb https://code.jsoftware.com/wiki/Vocabulary/quotedot[13] 00:16:05 @ Atop https://code.jsoftware.com/wiki/Vocabulary/at[14] 00:16:10 @: At https://code.jsoftware.com/wiki/Vocabulary/atco[15] 00:18:53 Combinators https://mlochbaum.github.io/BQN/tutorial/combinator.html Close composition: https://apl.wiki/Close_composition[16] 00:19:32 The J diagram of composition patterns: https://code.jsoftware.com/wiki/File:Funcomp.png[17] 00:20:10 Scalar APL https://aplwiki.com/wiki/Scalar J https://code.jsoftware.com/wiki/Vocabulary/Nouns#Atom BQN https://mlochbaum.github.io/BQN/doc/based.html#starting-from-atoms Scalar function: https://apl.wiki/Scalar_function Everything else: https://apl.wiki/Mixed_function Atom: https://apl.wiki/Simple_scalar Leading axis agreement: https://apl.wiki/Leading_axis_agreement Scalar agreement: https://apl.wiki/Scalar_extension[18] 00:25:50 Numpy https://numpy.org/ Julia https://julialang.org/[19] 00:26:58 APL: https://tryapl.org/?clear&q=1%202%203(%2B%E2%8D%A41)2%203%E2%8D%B41%202%203&run BQN: https://mlochbaum.github.io/BQN/try.html#code=MeKAvzLigL8zK+KOiTEgMuKAvzPipYox4oC/MuKAvzM= J: (3 3 $ 1 2 3) +"1 (1 2 3) https://jsoftware.github.io/j-playground/bin/html2/#code=%283%203%20%24%201%202%203%29%20%2B%221%20%281%202%203%29%0A[20] 00:27:40 Reduce https://aplwiki.com/wiki/Reduce Scan https://aplwiki.com/wiki/scan Reverse https://aplwiki.com/wiki/reverse Rotate https://aplwiki.com/wiki/rotate[21] 00:33:00 ⍪ Catenate First https://aplwiki.com/wiki/Catenate[22] 00:37:50 Major cells https://aplwiki.com/wiki/Major_cell Cell: https://apl.wiki/Cell "Items": https://apl.wiki/Major_cell Arthur Whitney: https://apl.wiki/Arthur_Whitney[23] 00:38:48 Operators and Enclosed Arrays https://www.jsoftware.com/papers/opea.htm[24] 00:40:17 Original Iverson Notation http://www.jsoftware.com/papers/DFSP.htm Iverson Notation: https://apl.wiki/Iverson_notation Roger Hui: https://apl.com/Roger_Hui[25] 00:41:32 [] Bracket Axis https://aplwiki.com/wiki/Function_axis[26] 00:43:32 Scan https://aplwiki.com/wiki/Scan Scan with axis: https://tryapl.org/?clear&q=%E2%8E%95IO%E2%86%900%20%E2%8B%84%20m%E2%86%903%203%E2%8D%B41%202%203%20%E2%8B%84%20(%2B%5Cm)%20(%2B%5C%5B0%5Dm)%20(%2B%E2%8D%80m)&run J: https://jsoftware.github.io/j-playground/bin/html2/#code=m%3D%3A%203%203%20%24%201%202%203%0Am%3B%28%2B%2F%5C%20m%29%0A%0A[27] 00:48:32 A Programming Language http://www.jsoftware.com/papers/APL.htm[28] 00:51:40 BQN to APL Translation https://mlochbaum.github.io/BQN/doc/fromDyalog.html[29] 00:52:13 ˘ Cells https://mlochbaum.github.io/BQN/help/cells.html Breve symbol: https://en.wikipedia.org/wiki/Breve SHARP APL: https://apl.wiki/SHARP_APL APL2: https://apl.wiki/APL2[30] 00:53:34 Items J https://code.jsoftware.com/wiki/Vocabulary/Nouns#Item[31] 00:54:59 ˝ Insert BQN https://mlochbaum.github.io/BQN/help/insert.html[32] 00:56:09 Catenation https://aplwiki.com/wiki/Catenate Concatenation reduction of a matrix: APL: https://tryapl.org/?clear&q=%2C%2F3%203%E2%8D%B4%E2%8D%B39&run BQN: https://mlochbaum.github.io/BQN/try.html#code=beKGkDPigL8z4qWKMSvihpU5CuKIvsudbQ== J: https://jsoftware.github.io/j-playground/bin/html2/#code=m%3D%3A%203%203%241%2Bi.9%0A%2C%2Fm BQN with Each: https://mlochbaum.github.io/BQN/try.html#code=beKGkDPigL8z4qWKMSvihpU5CuKIvsKoy51t J with each: https://jsoftware.github.io/j-playground/bin/html2/#code=%0Am%3D%3A3%203%241%2Bi.9%0A%2C%2Feach%20m%0A[33] 00:57:50 k language https://aplwiki.com/wiki/K APL\360: https://apl.wiki/APL\360[34] 01:00:34 / Insert J https://code.jsoftware.com/wiki/Vocabulary/slash ˝ Insert BQN https://mlochbaum.github.io/BQN/help/insert.html J NuVoc: https://code.jsoftware.com/wiki/NuVoc ⌿ Reduce First APL https://aplwiki.com/wiki/Reduce[35] 01:03:40 J for C Programmers Declarations https://www.jsoftware.com/help/jforc/declarations.htm#_Toc191734319 J for C Programmers Verbs have rank https://www.jsoftware.com/help/jforc/loopless_code_i_verbs_have_r.htm#_Toc191734331 Summing rows: APL: https://tryapl.org/?clear&q=%2B%2F3%203%E2%8D%B4%E2%8D%B39&run BQN: https://mlochbaum.github.io/BQN/try.html#code=beKGkDPigL8z4qWKMSvihpU5CivCtMuYbQ== J: https://jsoftware.github.io/j-playground/bin/html2/#code=%0Am%3D%3A3%203%24%3E%3Ai.9%0A%2B%2F%221%20m%0A Summing rows of coordinate pairs: APL: https://tryapl.org/?clear&q=m%E2%86%903%203%E2%8D%B4%E2%8D%B39%20%E2%8B%84%20m%20(%E2%8A%96m)%20(%E2%8C%BDm)&run BQN with insert: https://mlochbaum.github.io/BQN/try.html#code=K8udy5gxK+KGlTPigL8z BQN with fold: https://mlochbaum.github.io/BQN/try.html#code=K8K0y5gxK+KGlTPigL8z J: https://jsoftware.github.io/j-playground/bin/html2/#code=%0Am%3D%3A%7B%3B~%3E%3Ai.3%0A%2Beach%2F%20m%0A[36] 01:07:00 Based Arrays https://aplwiki.com/wiki/Array_model#Based_array_theory[37] 01:08:47 http://tryapl.com https://tryapl.org/[38] 01:09:01 iota ⍳ https://aplwiki.com/wiki/Index_Generator[39] 01:11:20 aplcart https://aplcart.info/[40] 01:13:30 Einstein Summation Notation https://en.wikipedia.org/wiki/Einstein_notation einsum: https://numpy.org/doc/stable/reference/generated/numpy.einsum.html[41] 01:15:00 Dex programming language https://github.com/google-research/dex-lang#readme[42] 01:18:00 ⍉ Transpose https://aplwiki.com/wiki/Transpose Mirrors: APL: https://tryapl.org/?clear&q=M%E2%86%903%203%E2%8D%B4%E2%8D%B39%20%E2%8B%84%20m%20(%E2%8A%96m)%20(%E2%8C%BDm)&run BQN: https://mlochbaum.github.io/BQN/try.html#code=beKGkDPigL8z4qWKMSvihpU5IOKLhCDin6htLOKMvW0s4oy9y5ht4p+p J:https://jsoftware.github.io/j-playground/bin/html2/#code=%0Am%3D%3A%3E%3Ai.%203%203%0A%28%5D%20%3B%20%7C.%20%3B%20%7C.%221%29%20m%0A[43] 01:20:00 BQN ⊸ Before https://mlochbaum.github.io/BQN/help/before_bind.html ⟜ After https://mlochbaum.github.io/BQN/help/after_bind.html Conor's number of permutations tweet: https://twitter.com/code_report/status/1528844402046685187 Combinators: https://apl.wiki/Function_composition[44] 01:31:30 Joel Kaplan on the ArrayCast https://www.arraycast.com/episodes/episode27-joel-kaplan

Array Cast - May 13, 2022 Show Notes[01] 00:01:25 https://code.jsoftware.com/wiki/System/Forums[02] 00:02:10 https://www.arraycast.com/episodes/episode26-stevan-apter[03] 00:02:28 Joel Kaplan video https://www.youtube.com/watch?v=Ni0Kj3Xjk1k&t=1s[04] 00:03:10 https://www.morganstanley.com/[05] 00:03:15 https://aplwiki.com/wiki/Arthur_Whitney[06] 00:03:25 https://www.1010data.com/[07] 00:10:20 APL-DI https://dl.acm.org/doi/10.1145/800136.804492[08] 00:12:10 https://en.wikipedia.org/wiki/Fred_Brooks[09] 00:12:36 https://en.wikipedia.org/wiki/David_E._Shaw[10] 00:15:25 https://en.wikipedia.org/wiki/Jeff_Bezos[11] 00:17:00 https://en.wikipedia.org/wiki/Digital_Equipment_Corporation[12] 00:18:15 https://en.wikipedia.org/wiki/IBM_5100[13] 00:18:55 https://en.wikipedia.org/wiki/Bill_Gates[14] 00:18:55 Gates APL Interpreter https://americanhistory.si.edu/comphist/gates.htm#tc30[15] 00:23:11 https://aplwiki.com/wiki/Bob_Bernecky[16] 00:26:15 https://mathworld.wolfram.com/NearestNeighborProblem.html[17] 00:29:26 Generalisation of the Axis operator apl.wiki/Rank (operator)[18] 00:30:50 https://en.wikipedia.org/wiki/QWERTY[19] 00:31:37 https://aplwiki.com/wiki/A[20] 00:34:00 https://aplwiki.com/wiki/K[21] 00:34:17 APL machine https://aplwiki.com/wiki/APL_Machine[22] 00:35:07 Analogic https://www.analogic.com/?locale=en[23] 00:37:07 Aaron Hsu video https://www.youtube.com/watch?v=2FMBf6A2eAA[24] 00:41:19 http://www.nsl.com/[25] 00:43:45 https://en.wikipedia.org/wiki/Muhammad_ibn_Musa_al-Khwarizmi[26] 00:43:52 https://en.wikipedia.org/wiki/Gottfried_Wilhelm_Leibniz#Symbolic_thought[27] 00:52:30 https://www.ubs.com/ca/en.html[28] 00:54:20 https://en.wikipedia.org/wiki/Pete_Muller_(businessman_and_singer-songwriter)[29] 00:56:30 https://www.dyalog.com/[30] 00:57:10 https://shakti.com/[31] 01:00:35 https://en.wikipedia.org/wiki/Steve_Jobs[32] 01:01:30 https://www.jsoftware.com/#/README[33] 01:04:09 https://aplwiki.com/wiki/Ken_Iverson[34] 01:08:30 Steven's blog post https://www.5jt.com/all-that-jazz-the-librarian-s-song[35] 01:12:18 https://en.wikipedia.org/wiki/Alan_Perlis[36] 01:13:33 https://en.wikipedia.org/wiki/Benoit_Mandelbrot[37] 01:14:15 Society of Quantitative Analysts https://www.sqa-us.org/[38] 01:14:47 https://en.wikipedia.org/wiki/Shmuel_Winograd https://encyclopediaofmath.org/wiki/Winograd_Fourier_transform_algorithm[39] 01:14:41 Yorktown Heights: https://en.wikipedia.org/wiki/Thomas_J._Watson_Research_Center[40] 01:14:52 John Cocke https://www.youtube.com/watch?v=eYwd30iWVvw https://en.wikipedia.org/wiki/John_Cocke_(computer_scientist)[41] 01:15:25 https://en.wikipedia.org/wiki/Leon_Cooper[42] 01:16:19 https://en.wikipedia.org/wiki/Philip_Wolfe_(mathematician) https://en.wikipedia.org/wiki/Quadratic_programming https://pages.cs.wisc.edu/~brecht/cs838docs/wolfe-qp.pdf[43] 01:16:41 https://en.wikipedia.org/wiki/Sharpe_ratio[44] 01:18:54 https://en.wikipedia.org/wiki/Alan_Kay[45] 01:18:58 https://en.wikipedia.org/wiki/Alexander_Stepanov[46] 01:20:09 https://en.wikipedia.org/wiki/Rob_Pike[47] 01:22:05 https://www.reddit.com/r/apljk/[48] 01:22:30 https://en.wikipedia.org/wiki/Lisp_(programming_language)[49] 01:24:43 Conor's videos https://www.youtube.com/channel/UC1kBxkk2bcG78YBX7LMl9pQ[50] 01:25:13 Rodrigo's videos https://www.youtube.com/channel/UCd_24S_cYacw6zrvws43AWg[51] 001:25:01 "Easy to Learn - Worth Mastering" https://dyalog.tv/APLSeeds22/?v=o-0xk96_BNw[52] 01:25:55 https://aplwiki.com/wiki/Outer_Product[53] 01:26:55 BQN https://mlochbaum.github.io/BQN/[54] 01:27:25 https://aplwiki.com/wiki/Inner_Product[55] 01:29:55 Ripple shuffle expression https://tryapl.org/?clear&q=%7B%E2%8D%B5%5B%E2%8D%8B%E2%8D%922%7C%E2%8D%B3%E2%89%A2%E2%8D%B5%5D%7D%27ABCDEabcde%27&run