59 lines
1.5 KiB
JavaScript
59 lines
1.5 KiB
JavaScript
/**
|
|
* @license Apache-2.0
|
|
*
|
|
* Copyright (c) 2018 The Stdlib Authors.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
// MODULES //
|
|
|
|
var factory = require( './factory.js' );
|
|
|
|
|
|
// MAIN //
|
|
|
|
/**
|
|
* Returns a random permutation of elements in `arr`.
|
|
*
|
|
* @name shuffle
|
|
* @type {Function}
|
|
* @param {ArrayLike} arr - array-like object to shuffle
|
|
* @param {Options} [options] - function options
|
|
* @param {string} [options.copy="shallow"] - string indicating whether to return a copy (`deep`,`shallow` or `none`)
|
|
* @throws {TypeError} `options` must be an object
|
|
* @throws {TypeError} must provide valid options
|
|
* @returns {ArrayLike} the shuffled array-like object
|
|
*
|
|
* @example
|
|
* var data = [ 1, 2, 3 ];
|
|
* var out = shuffle( data );
|
|
* // e.g., returns [ 3, 1, 2 ]
|
|
*
|
|
* @example
|
|
* var data = [ 1, 2, 3 ];
|
|
* var out = shuffle( data, {
|
|
* 'copy': 'none'
|
|
* });
|
|
* var bool = ( data === out );
|
|
* // returns true
|
|
*/
|
|
var shuffle = factory();
|
|
|
|
|
|
// EXPORTS //
|
|
|
|
module.exports = shuffle;
|