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dewey92/liftA.js

Created June 23, 2017 22:28
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liftA.js
const incr = x => x + 1
const add = curry((x, y) => x + y)
const sum3 = curry((x, y, z) => x + y + z)
liftA(incr, Functor1) === pure(incr).ap(Functor1)
liftA2(add, Functor1, Functor2) === pure(add).ap(Functor1).ap(Functor2)
liftA3(sum3, Functor1, Functor2, Functor3) === pure(sum3).ap(Functor1).ap(Functor2).ap(Functor3)
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