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victorvoid/composability-example03.js Secret

Last active July 19, 2018 02:01
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composability-example03.js
const Functor = x => ({
map: f => Functor(f(x)),
fold: f => f(x)
})
const app = (n) =>
Functor(n)
.map(n => n * 2)
.map(n => n + 1)
app(10)
.fold(console.log) //21
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