npm package: @stdlib/ndarray-base-empty-like
Description: Create an uninitialized ndarray having the same shape and data type as a provided ndarray.
Author: The Stdlib Authors
Latest version: 0.3.1

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<details>
  <summary>
    About stdlib...
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  <p>We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.</p>
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# emptyLike

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Create an uninitialized ndarray having the same shape and [data type][@stdlib/ndarray/dtypes] as a provided ndarray.

<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->

<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-base-empty-like
```

</section>

<section class="usage">

## Usage

```javascript
var emptyLike = require( '@stdlib/ndarray-base-empty-like' );
```

#### emptyLike( x )

Creates an uninitialized ndarray having the same shape and [data type][@stdlib/ndarray/dtypes] as a provided ndarray.

```javascript
var getShape = require( '@stdlib/ndarray-shape' );
var zeros = require( '@stdlib/ndarray-base-zeros' );

var x = zeros( 'float64', [ 2, 2 ], 'row-major' );
// returns <ndarray>

var y = emptyLike( x );
// returns <ndarray>

var sh = getShape( y );
// returns [ 2, 2 ]
```

</section>

<!-- /.usage -->

<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

## Notes

-   Along with data type, shape, and order, the function infers the "class" of the returned ndarray from the provided ndarray. For example, if provided a "base" [ndarray][@stdlib/ndarray/base/ctor], the function returns a base [ndarray][@stdlib/ndarray/base/ctor]. If provided a non-base [ndarray][@stdlib/ndarray/ctor], the function returns a non-base [ndarray][@stdlib/ndarray/ctor].
-   If the inferred output ndarray data type is `'generic'`, the function always returns a zero-filled ndarray.
-   For returned ndarrays whose underlying memory is **not** initialized, memory contents are unknown and may contain **sensitive** data.

</section>

<!-- /.notes -->

<!-- Package usage examples. -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var dtypes = require( '@stdlib/ndarray-dtypes' );
var empty = require( '@stdlib/ndarray-base-empty' );
var ndarray2array = require( '@stdlib/ndarray-to-array' );
var emptyLike = require( '@stdlib/ndarray-base-empty-like' );

// Get a list of data types:
var dt = dtypes( 'integer_and_generic' );

// Generate uninitialized arrays...
var x;
var y;
var i;
for ( i = 0; i < dt.length; i++ ) {
    x = empty( dt[ i ], [ 2, 2 ], 'row-major' );
    y = emptyLike( x );
    console.log( ndarray2array( y ) );
}
```

</section>

<!-- /.examples -->

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</section>

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<section class="related">

</section>

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<section class="main-repo" >

* * *

## Notice

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].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

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[npm-url]: https://npmjs.org/package/@stdlib/ndarray-base-empty-like

[test-image]: https://github.com/stdlib-js/ndarray-base-empty-like/actions/workflows/test.yml/badge.svg?branch=v0.3.1
[test-url]: https://github.com/stdlib-js/ndarray-base-empty-like/actions/workflows/test.yml?query=branch:v0.3.1

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/ndarray-base-empty-like/main.svg
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[stdlib]: https://github.com/stdlib-js/stdlib

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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/ndarray-base-empty-like/tree/deno
[deno-readme]: https://github.com/stdlib-js/ndarray-base-empty-like/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/ndarray-base-empty-like/tree/umd
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[esm-url]: https://github.com/stdlib-js/ndarray-base-empty-like/tree/esm
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/ndarray-base-empty-like/main/LICENSE

[@stdlib/ndarray/base/ctor]: https://www.npmjs.com/package/@stdlib/ndarray-base-ctor

[@stdlib/ndarray/ctor]: https://www.npmjs.com/package/@stdlib/ndarray-ctor

[@stdlib/ndarray/dtypes]: https://www.npmjs.com/package/@stdlib/ndarray-dtypes

</section>

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