70 lines
1.6 KiB
JavaScript
70 lines
1.6 KiB
JavaScript
/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var ndarray = require( '@stdlib/ndarray/base/ctor' );
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// MAIN //
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/**
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* Tests if a value is ndarray-like.
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*
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* @param {*} v - value to test
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* @returns {boolean} boolean indicating if a value is ndarray-like
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*
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* @example
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* var ndarray = require( '@stdlib/ndarray/ctor' );
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*
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* var arr = ndarray( 'generic', [ 0, 0, 0, 0 ], [ 2, 2 ], [ 2, 1 ], 0, 'row-major' );
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*
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* var bool = isndarrayLike( arr );
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* // returns true
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*
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* bool = isndarrayLike( [] );
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* // returns false
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*/
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function isndarrayLike( v ) {
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return (
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v instanceof ndarray ||
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(
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v !== null &&
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typeof v === 'object' &&
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typeof v.data === 'object' &&
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typeof v.shape === 'object' &&
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typeof v.strides === 'object' &&
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typeof v.offset === 'number' &&
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typeof v.order === 'string' &&
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typeof v.ndims === 'number' &&
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typeof v.dtype === 'string' &&
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typeof v.length === 'number' &&
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typeof v.flags === 'object' &&
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typeof v.get === 'function' &&
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typeof v.set === 'function'
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)
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);
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}
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// EXPORTS //
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module.exports = isndarrayLike;
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