Snippets

array.js

// Dead simple functions
const curry = fn => (...args) => fn.bind(null, ...args);
const map = curry((fn, arr) => arr.map(fn));
const join = curry((str, arr) => arr.join(str));
const split = curry((splitOn, str) => str.split(splitOn));

// keyBy :: String -> Array -> Object
const keyBy = curry((keyField, arr) =>
  Object.assign({}, ...arr.map(item => ({[item[keyField]]: item}))));