1 var createAggregator = require('./internal/createAggregator');
4 * Creates an object composed of keys generated from the results of running
5 * each element of `collection` through `iteratee`. The corresponding value
6 * of each key is the last element responsible for generating the key. The
7 * iteratee is invoked with one argument: (value).
11 * @category Collection
12 * @param {Array|Object} collection The collection to iterate over.
13 * @param {Function|Object|string} [iteratee=_.identity] The iteratee to transform keys.
14 * @returns {Object} Returns the composed aggregate object.
18 * { 'dir': 'left', 'code': 97 },
19 * { 'dir': 'right', 'code': 100 }
22 * _.keyBy(keyData, function(o) {
23 * return String.fromCharCode(o.code);
25 * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
27 * _.keyBy(keyData, 'dir');
28 * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
30 var keyBy = createAggregator(function(result, value, key) {
34 module.exports = keyBy;