Return the Cartesian square.
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> Return the [Cartesian square][cartesian-product].
``bash`
npm install @stdlib/array-base-cartesian-square
`javascript`
var cartesianSquare = require( '@stdlib/array-base-cartesian-square' );
#### cartesianSquare( x )
Returns the [Cartesian square][cartesian-product].
`javascript
var x = [ 1, 2 ];
var out = cartesianSquare( x );
// returns [ [ 1, 1 ], [ 1, 2 ], [ 2, 1 ], [ 2, 2 ] ]
`
If provided an empty array, the function returns an empty array.
`javascript`
var out = cartesianSquare( [] );
// returns []
`javascript
var linspace = require( '@stdlib/array-base-linspace' );
var cartesianSquare = require( '@stdlib/array-base-cartesian-square' );
var x = linspace( 0, 5, 6 );
var out = cartesianSquare( x );
// returns [ [ 0, 0 ], [ 0, 1 ], ..., [ 5, 4 ], [ 5, 5 ] ]
`
*
- [@stdlib/array-cartesian-square][@stdlib/array/cartesian-square]: return the Cartesian square.
- [@stdlib/array-base/cartesian-power][@stdlib/array/base/cartesian-power]: return the Cartesian power.
- [@stdlib/array-base/cartesian-product][@stdlib/array/base/cartesian-product]: return the Cartesian product.
*
This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].
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---
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Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[umd]: https://github.com/umdjs/umd
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[deno-url]: https://github.com/stdlib-js/array-base-cartesian-square/tree/deno
[deno-readme]: https://github.com/stdlib-js/array-base-cartesian-square/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/array-base-cartesian-square/tree/umd
[umd-readme]: https://github.com/stdlib-js/array-base-cartesian-square/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/array-base-cartesian-square/tree/esm
[esm-readme]: https://github.com/stdlib-js/array-base-cartesian-square/blob/esm/README.md
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[cartesian-product]: https://en.wikipedia.org/wiki/Cartesian_product
[@stdlib/array/cartesian-square]: https://www.npmjs.com/package/@stdlib/array-cartesian-square
[@stdlib/array/base/cartesian-power]: https://www.npmjs.com/package/@stdlib/array-base-cartesian-power
[@stdlib/array/base/cartesian-product]: https://www.npmjs.com/package/@stdlib/array-base-cartesian-product