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schabluk/cartesian.js

Created October 10, 2017 07:04
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Cartesian of arrays
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cartesian.js
const f = (a, b) => [].concat(...a.map(d => b.map(e => [].concat(d, e))))
const cartesian = (a, b, ...c) => (b ? cartesian(f(a, b), ...c) : a)
cartesian.apply(this, [["A", "B"], ["C", "D"]])
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