dims.js (1143B)
1 /** 2 * @license Apache-2.0 3 * 4 * Copyright (c) 2018 The Stdlib Authors. 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 'use strict'; 20 21 // MODULES // 22 23 var isArray = require( '@stdlib/assert/is-array' ); 24 25 26 // MAIN // 27 28 /** 29 * Determines array dimensions. 30 * 31 * @private 32 * @param {Array} arr - input array 33 * @param {NonNegativeInteger} maxDims - maximum dimensions 34 * @returns {PositiveIntegerArray} dimensions 35 */ 36 function dims( arr, maxDims ) { 37 var out; 38 var i; 39 out = []; 40 for ( i = 0; i < maxDims; i++ ) { 41 if ( !isArray( arr ) ) { 42 break; 43 } 44 out.push( arr.length ); 45 arr = arr[ 0 ]; 46 } 47 return out; 48 } 49 50 51 // EXPORTS // 52 53 module.exports = dims;