Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 5x 5x 5x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 5x 5x 3x 3x 5x 5x 3x 3x 3x 3x 3x | /**
* @license Apache-2.0
*
* Copyright (c) 2025 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 //
// eslint-disable-next-line node/no-restricted-require
var async = require( 'async' );
var zeros = require( '@stdlib/array/base/zeros' );
var assign = require( './assign.js' );
// FUNCTIONS //
/**
* Tests whether an object has a specified method.
*
* @private
* @param {Object} obj - input object
* @param {string} method - method name
* @returns {boolean} boolean indicating whether an object has a specified method
*
* @example
* var bool = hasMethod( [], 'map' );
* // returns true
*
* @example
* var bool = hasMethod( [], 'beep' );
* // returns false
*/
function hasMethod( obj, method ) {
return ( typeof obj[ method ] === 'function' );
}
/**
* Callback function that returns the result.
*
* @private
* @param {null} err - error
* @param {Collection} results - output array
* @returns {Collection} if callback is executed successfully else returns error
*/
function callback(err, results) {
if (err) {
return err;
}
return results;
}
// MAIN //
/**
* Applies a callback function to elements in an input array and assigns results to elements in a new output array.
*
* @param {Collection} x - input array
* @param {Function} fcn - callback function
* @param {*} [thisArg] - callback execution context
* @returns {Collection} output array
*
* @example
* var ones = require( '@stdlib/array/base/ones' );
*
* function scale( x ) {
* return x * 10.0;
* }
*
* var x = ones( 4 );
* var y = map( x, scale );
* // returns [ 10.0, 10.0, 10.0, 10.0 ]
*/
function map( x, fcn, thisArg ) {
if ( hasMethod( x, 'map' ) ) {
async.map(x, fcn.bind(thisArg), callback);
}
return assign( x, zeros( x.length ), 1, 0, fcn, thisArg );
}
// EXPORTS //
module.exports = map;
|