It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.
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const I = x => x | |
const K = x => y => x | |
const A = f => x => f (x) | |
const T = x => f => f (x) | |
const W = f => x => f (x) (x) | |
const C = f => y => x => f (x) (y) | |
const B = f => g => x => f (g (x)) | |
const S = f => g => x => f (x) (g (x)) | |
const S_ = f => g => x => f (g (x)) (x) | |
const S2 = f => g => h => x => f (g (x)) (h (x)) |
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/* eslint-disable new-cap */ | |
/** | |
* Lens types. | |
* =========== | |
* | |
* a * b = {fst: a, snd: b} | |
* a + b = {index: Boolean, value: a | b} | |
* | |
* Iso s t a b = forall (~>) . Profunctor (~>) => (a ~> b) -> (s ~> t) |
While this gist has been shared and followed for years, I regret not giving more background. It was originally a gist for the engineering org I was in, not a "general suggestion" for any React app.
Typically I avoid folders altogether. Heck, I even avoid new files. If I can build an app with one 2000 line file I will. New files and folders are a pain.