time-to-botec

Benchmark sampling in different programming languages
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findLastKey.js (1346B)

      1 var baseFindKey = require('./_baseFindKey'),
      2     baseForOwnRight = require('./_baseForOwnRight'),
      3     baseIteratee = require('./_baseIteratee');
      4 
      5 /**
      6  * This method is like `_.findKey` except that it iterates over elements of
      7  * a collection in the opposite order.
      8  *
      9  * @static
     10  * @memberOf _
     11  * @since 2.0.0
     12  * @category Object
     13  * @param {Object} object The object to inspect.
     14  * @param {Function} [predicate=_.identity] The function invoked per iteration.
     15  * @returns {string|undefined} Returns the key of the matched element,
     16  *  else `undefined`.
     17  * @example
     18  *
     19  * var users = {
     20  *   'barney':  { 'age': 36, 'active': true },
     21  *   'fred':    { 'age': 40, 'active': false },
     22  *   'pebbles': { 'age': 1,  'active': true }
     23  * };
     24  *
     25  * _.findLastKey(users, function(o) { return o.age < 40; });
     26  * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
     27  *
     28  * // The `_.matches` iteratee shorthand.
     29  * _.findLastKey(users, { 'age': 36, 'active': true });
     30  * // => 'barney'
     31  *
     32  * // The `_.matchesProperty` iteratee shorthand.
     33  * _.findLastKey(users, ['active', false]);
     34  * // => 'fred'
     35  *
     36  * // The `_.property` iteratee shorthand.
     37  * _.findLastKey(users, 'active');
     38  * // => 'pebbles'
     39  */
     40 function findLastKey(object, predicate) {
     41   return baseFindKey(object, baseIteratee(predicate, 3), baseForOwnRight);
     42 }
     43 
     44 module.exports = findLastKey;