49 lines
1.4 KiB
JavaScript
49 lines
1.4 KiB
JavaScript
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import { arraySize } from '../../utils/array.js';
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import { factory } from '../../utils/factory.js';
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import { noMatrix } from '../../utils/noop.js';
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var name = 'size';
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var dependencies = ['typed', 'config', '?matrix'];
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export var createSize = /* #__PURE__ */factory(name, dependencies, _ref => {
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var {
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typed,
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config,
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matrix
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} = _ref;
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/**
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* Calculate the size of a matrix or scalar.
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*
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* Syntax:
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*
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* math.size(x)
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*
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* Examples:
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*
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* math.size(2.3) // returns []
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* math.size('hello world') // returns [11]
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*
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* const A = [[1, 2, 3], [4, 5, 6]]
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* math.size(A) // returns [2, 3]
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* math.size(math.range(1,6)) // returns [5]
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*
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* See also:
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*
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* count, resize, squeeze, subset
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*
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* @param {boolean | number | Complex | Unit | string | Array | Matrix} x A matrix
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* @return {Array | Matrix} A vector with size of `x`.
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*/
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return typed(name, {
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Matrix: function Matrix(x) {
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return x.create(x.size());
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},
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Array: arraySize,
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string: function string(x) {
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return config.matrix === 'Array' ? [x.length] : matrix([x.length]);
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},
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'number | Complex | BigNumber | Unit | boolean | null': function numberComplexBigNumberUnitBooleanNull(x) {
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// scalar
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return config.matrix === 'Array' ? [] : matrix ? matrix([]) : noMatrix();
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}
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});
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});
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