I develop calculang, a language for calculations. It converts concise formulae into Javascript. Since calculation formulae are usually inherently pure, a `--me

I develop calculang, a language for calculations. It converts concise formulae into Javascript. Since calculation formulae are usually inherently pure, a `--memo` flag to the compiler memoizes the lot. Many of my models are written in this recursive style and only work because of memoization. Sometimes other tricks are needed e.g. careful ordering of the calls, so that the memo is available before the stack breaks. My first calculang example is a bouncing ball: the position at t depends on speed and the position at previous t. With loops we'll usually discover the same thing, but it can be so much harder to follow. First-class memoization to proliferate this style is a really neat thing. [0] https://github.com/calculang/calculang https://github.com/calculang/calculang [1] bouncing ball code: https://github.com/declann/calculang-miscellaneous-models/blob/main/models/bounce/bounce.cul.js https://github.com/declann/calculang-miscellaneous-models/bl... [2] bouncing ball initial post: https://observablehq.com/@declann/calculang-bouncing-ball?collection=@declann/calculang https://observablehq.com/@declann/calculang-bouncing-ball?co... [3] if you can tolerate my slow-load WIP devtools and are on a Desktop, this is better, with buttons to navigate through the model development (only some of which are working now!): https://models-on-a-plane.pages.dev/stories/bounce/ https://models-on-a-plane.pages.dev/stories/bounce/