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Meeting ID: 991 7405 6352

Find your local number: https://acm-org.zoom.us/u/aZw8EBEZK

APL BUG Biweekly Round-Table Discussion Thursday, July 11th, 2024, 6:00 PM Pacific Time

It's been suggested that the Northern California APL ACM Chapter (or APL Bay Area Users' Group or APL BUG) try meeting more often. Zoom has been set up for meetings every other Thursday, (alternating with British APL Association meetings) at a time that may be more convenient for people in the San Francisco Bay Area - 6 p.m. Pacific Daylight Time (1 a.m. Friday UTC).

Questions or comments on any topic related to APL, J, K, or other programming language derived from Iverson notation will be welcomed.

Northern California APL ACM Chapter is inviting you to a scheduled Zoom meeting.

Every 14 days, until Sep 5, 2024, 7 occurrence(s)

  • Jun 13, 2024 6:00 PM
  • Jun 27, 2024 6:00 PM
  • Jul 11, 2024 6:00 PM
  • Jul 25, 2024 6:00 PM
  • Aug 8, 2024 6:00 PM
  • Aug 22, 2024 6:00 PM
  • Sep 5, 2024 6:00 PM
Please download and import the following iCalendar (.ics) files to your calendar system.

Daily: https://acm-org.zoom.us/meeting/tJ0scO2oqz0pH9aCMUBvCoBQ9CQiDaIOTHAD/ics?icsToken=98tyKuChrzwuGtGTsxyFRox5BY_CLPTwmCFegvpcvzLQITZwbSHHb8FzO5Z-Offk

Join the Zoom meeting by clicking on this link.

Topic: APL BUG Biweekly Round-Table Discussion

Time: June 13th, 2024 06:00 PM Pacific Time (US and Canada)

  • Connect to Zoom
  • Select "Join a meeting" at the top of the screen.
  • Meeting ID: 991 7405 6352
  • Passcode: The result of ×/1920 12 17 (Ken Iverson's birthday) evaluated as an APL expression; Try APL here.

    • or, if Unicode font not in use,

  • {times}/1920 12 17

Current APL Topics

Morten Kromberg's slides for the "Introduction to Link" he gave to the APL BUG on the 11th of December are here (PDF). A video of the talk may be found here with the passcode ⎕AV[85 29 205 53 36 22 28 236+~⎕IO].

⎕XML can convert between APL arrays and XML.
⎕CSV imports and exports comma separated value data. (Spreadsheets can be exported to .CSV files.)
⎕JSON "imports and exports data in JavaScript Object Notation (JSON) Data Interchange Format".

Adám Brudzewsky noted information on "How to dynamically expand a Memory Mapped File" is at https://stackoverflow.com/q/6096485/5306507 .

There's a conversation about calendar functions in the Q&A period. Davin Church mentioned his calendar functions in the chat. "My dates workspace is available under ]TATIN as Davin.DateTime and github.com/DavinChurch/DateTime".

Richard noted that there's more at Dyalog.tv.
Dyalog 2008 Journaled Files https://www.youtube.com/watch?v=TwvgyNOtoK8
Dyalog 2009 ⎕XML https://dyalog.tv/Dyalog09/?v=KrY7oMCmL3Y
Dyalog 2013 Version 14.0 File System Enhancements https://dyalog.tv/Dyalog13/?v=nZiwORueFP0
Ray Cannon's performance of Bach's Toccata and Fugue in D minor may be found at https://youtu.be/SynKQbO2Ma4 and the Dyalog APL code is available from Github at https://github.com/RayCannon/Toccata-and-Fugue
You might also like the Mandelbrot zoom https://www.youtube.com/watch?v=7aUOAklV2AM&t=45s It has a nice cherry blossom near the end.