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BrunoDSouza/groupBy.js

Forked from suissa/groupBy.js
Created July 11, 2017 20:13
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Group by bem facinho
Raw
groupBy.js
const groupBy = (xs, key) => xs.reduce((rv, x) => {
(rv[x[key]] = rv[x[key]] || []).push(x);
return rv;
}, {});
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