APL Is Really Cool

It's a REPL interface, and a really old one. But it's all about performing abstract operations on concrete data. Reminds me of PANE's philosophy: "programming with visible data".

The weird runic incantations like r←,⍳⊢ ⋄ (r G) ≡ r ∘.{⍺[⍵]}⍨ ↓r G are super charming as well. Sure it's intimidating to look at, but the semantics could perhaps be turned into direct manipulation semantics (How do you create an interaction semantics?)?

from Building J from source

Here's a bunch of college-level math textbooks where the examples are in APL. All by Iverson(?).

Teaching Mathematics Using APL

(related: Domain-Learning with Computational Microworlds)

roads not taken or uneven distribution? pic.twitter.com/SQmgowxTKL
— andrew blinn (@disconcision) February 4, 2021

BQN: finally, an APL for your flying saucer
Co-dfns
A History of APL in 50 Functions
CoSy
april - lisp APL

131 games for your Superbrain pic.twitter.com/x5IkTA2anI
— Exciting Books (@excitingbooks) April 9, 2014

https://twitter.com/conaw/status/1431359651782692864?s=21

https://datakinds.github.io//2020/03/15/modeling-the-coronavirus-outbreak-with-j

https://code.jsoftware.com/wiki/Books

https://archive.org/details/mr.-babbages-secret-the-tale-franksen-ole-immanuel/page/273/mode/2up

https://www.hillelwayne.com/post/j-notation/

https://news.ycombinator.com/item?id=7814293

"What's my name jack?" in Toki Pona. Some sort of MS Paint adventures thing. No idea what it means. I think I got it from a toki pona subreddit.

https://dl.acm.org/doi/pdf/10.1145/3315454.3329960

https://dl.acm.org/doi/10.1145/3589246.3595371

Backlinks

Linear Algebra as Spreadsheet

Random implementations of related things