You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
1.2 KiB
37 lines
1.2 KiB
3 years ago
|
var baseAssignValue = require('./_baseAssignValue'),
|
||
|
|
createAggregator = require('./_createAggregator');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates an object composed of keys generated from the results of running
|
||
|
|
* each element of `collection` thru `iteratee`. The corresponding value of
|
||
|
|
* each key is the last element responsible for generating the key. The
|
||
|
|
* iteratee is invoked with one argument: (value).
|
||
|
|
*
|
||
|
|
* @static
|
||
|
|
* @memberOf _
|
||
|
|
* @since 4.0.0
|
||
|
|
* @category Collection
|
||
|
|
* @param {Array|Object} collection The collection to iterate over.
|
||
|
|
* @param {Function} [iteratee=_.identity] The iteratee to transform keys.
|
||
|
|
* @returns {Object} Returns the composed aggregate object.
|
||
|
|
* @example
|
||
|
|
*
|
||
|
|
* var array = [
|
||
|
|
* { 'dir': 'left', 'code': 97 },
|
||
|
|
* { 'dir': 'right', 'code': 100 }
|
||
|
|
* ];
|
||
|
|
*
|
||
|
|
* _.keyBy(array, function(o) {
|
||
|
|
* return String.fromCharCode(o.code);
|
||
|
|
* });
|
||
|
|
* // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
|
||
|
|
*
|
||
|
|
* _.keyBy(array, 'dir');
|
||
|
|
* // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
|
||
|
|
*/
|
||
|
|
var keyBy = createAggregator(function(result, value, key) {
|
||
|
|
baseAssignValue(result, key, value);
|
||
|
|
});
|
||
|
|
|
||
|
|
module.exports = keyBy;
|