| 'use strict'; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = reduceRight; |
| |
| var _reduce = require('./reduce'); |
| |
| var _reduce2 = _interopRequireDefault(_reduce); |
| |
| function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } |
| |
| var slice = Array.prototype.slice; |
| |
| /** |
| * Same as [`reduce`]{@link module:Collections.reduce}, only operates on `array` in reverse order. |
| * |
| * @name reduceRight |
| * @static |
| * @memberOf module:Collections |
| * @method |
| * @see [async.reduce]{@link module:Collections.reduce} |
| * @alias foldr |
| * @category Collection |
| * @param {Array} array - A collection to iterate over. |
| * @param {*} memo - The initial state of the reduction. |
| * @param {Function} iteratee - A function applied to each item in the |
| * array to produce the next step in the reduction. The `iteratee` is passed a |
| * `callback(err, reduction)` which accepts an optional error as its first |
| * argument, and the state of the reduction as the second. If an error is |
| * passed to the callback, the reduction is stopped and the main `callback` is |
| * immediately called with the error. Invoked with (memo, item, callback). |
| * @param {Function} [callback] - A callback which is called after all the |
| * `iteratee` functions have finished. Result is the reduced value. Invoked with |
| * (err, result). |
| */ |
| function reduceRight(array, memo, iteratee, callback) { |
| var reversed = slice.call(array).reverse(); |
| (0, _reduce2.default)(reversed, memo, iteratee, callback); |
| } |
| module.exports = exports['default']; |