Marcus Blättermann essenmitsosse
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| /* | |
| In JavaScript, objects can be used to serve various purposes. | |
| To maximise our usage of the type system, we should assign different types to our objects depending | |
| on the desired purpose. | |
| In this blog post I will clarify two common purposes for objects known as records and dictionaries | |
| (aka maps), and how they can both be used with regards to the type system. |
dtipson
/ cellular automata with quasi-comonads.js
Last active
November 9, 2021 14:41
Using a comonad(ish) pattern to create cellular automata in a more functional way. Inspired by this episode of funfunfunction: https://www.youtube.com/watch?v=bc-fVdbjAwk
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| /* | |
| Native Arrays are not great structures for cellular automata. | |
| Non-empty, circular, doubly-linked lists would be ideal... | |
| but all we really need to do is write a comonadic-like interface | |
| such that it _pretends_ that the array is circular, and can thus | |
| pass the exfn below a sort of "local" slice of an Array as if it were circular. | |
| So you can mostly ignore the implementation mess below | |
| */ | |
| Array.prototype.extendNear = function(exfn){ | |
| const len = this.length; |