For a while now I've been wanting a generic notation to explain various things on my wiki(tropical arithmetic, multisets, other programming languages, ternary logic, primes, etc..) and I found a PL design I really enjoy writing.

It lands in a weird place, I feel like it might be the only concatenative language without a stack? As far as I know anyways.

I took a day to implement it, and shoved it into a little interactive playground. I have yet to populate the examples.

https://wiki.xxiivv.com/site/rejoice
https://wiki.xxiivv.com/etc/rejoicerepl/

@neauoire I wish there was a wiki. xxiivv.com book I could buy, the sheer amount of super unique ideas and rabbitholes you've written about have infected my mind to the point where I have had sleepless nights thinking about what I read
@angelwood it's too "lively" it changes all the time. I must do about 20ish changes daily, it holds the current state of my understanding of various topics, but it's constantly growing.
@neauoire @angelwood wiki -> pdf export program for e-readers
@neauoire @angelwood make yearly releases like "xxiivv as of 2026" then new editions can start with a gigantic list of everything that changed since!