Function forEachRight

MathBox/mathbox-bundle.js:38458–38476

* This method is like `_.forEach` except that it iterates over elements * of a `collection` from right to left. * * @static * @memberOf _ * @alias eachRight * @category Collections * @param {Array|Object|string} collection The collection to iterate over. * @pa

(collection, callback, thisArg)

     * // => logs each number from right to left and returns '3,2,1'
     */
    function forEachRight(collection, callback, thisArg) {
      var length = collection ? collection.length : 0;
      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
      if (typeof length == 'number') {
        while (length--) {
          if (callback(collection[length], length, collection) === false) {
            break;
          }
        }
      } else {
        var props = keys(collection);
        length = props.length;
        forOwn(collection, function(value, key, collection) {
          key = props ? props[--length] : --length;
          return callback(collection[key], key, collection);
        });
      }
      return collection;
    }

    /**
     * Creates an object composed of keys generated from the results of running