ngn-apl VS aplette

Some APL environments such as ngn/apl[0] allow tab completion like |o results in ⌽. This is probably available on tryapl.org too, but I can't test it when it's down :/

[0]: https://github.com/abrudz/ngn-apl

There is Aplette which supposedly integrates nicely with other Unix tools. It's a port/update of the earlier openAPL source code, which I think was done by Ken Thompson? Here:

https://github.com/gregfjohnson/aplette

If you're interested in recent developments in array languages, I recommend checking out:

BQN https://mlochbaum.github.io/BQN/

ngn/k https://git.sr.ht/~ngn/k/tree/master/item/readme.txt (Previous discussion: https://news.ycombinator.com/item?id=22009241)

aplette, which is a modernization of Ken Thompson's APL https://github.com/gregfjohnson/aplette (Previous discussion: https://news.ycombinator.com/item?id=21740536)

I'd also recommend checking out J, which isn't a recent development, but has the best syntax out of all array languages, has the best development environments, is the easiest to learn (it has a way to learn it built into the language itself!), and is the only one that treats making GUIs as a first-class feature: jsoftware.com (Has so many previous discussions I just recommend using HN search to find them.)

The chat is biased to Dyalog APL, but a lot of the modern additions Dyalog has made to the language make it (in my opinion) worse as a notation, so ideally don't let it turn you off of the concept of array languages entirely if Dyalog doesn't "click" with you.

If you haven't already, you should also check out Notation as a Tool of Thought, a paper so good it won Iverson the Turing Award:

https://www.eecg.utoronto.ca/~jzhu/csc326/readings/iverson.p...