npm package: @stdlib/ndarray-base-flags
Description: Return the flags of a provided ndarray.
Author: The Stdlib Authors
Latest version: 0.2.3

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# flags

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

> Return the flags of a provided [ndarray][@stdlib/ndarray/base/ctor].

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</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-base-flags
```

</section>

<section class="usage">

## Usage

```javascript
var flags = require( '@stdlib/ndarray-base-flags' );
```

#### flags( x, copy )

Returns the flags of a provided [ndarray][@stdlib/ndarray/base/ctor].

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

var x = zeros( [ 3, 2, 3 ] );
// returns <ndarray>

var o = flags( x, false );
// returns {...}
```

When `copy` is `false`, changes to the returned object may mutate the input [ndarray][@stdlib/ndarray/base/ctor] flags. If there is a chance that the returned object will be mutated (either directly or by downstream consumers), set `copy` to `true` to prevent unintended side effects.

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

var x = zeros( [ 3, 2, 3 ] );
// returns <ndarray>

var o = flags( x, true );
// returns {...}

var bool = ( x.flags === o );
// returns false
```

</section>

<!-- /.usage -->

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<section class="notes">

</section>

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<!-- Package usage examples. -->

<section class="examples">

## Examples

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

<!-- eslint-disable new-cap -->

```javascript
var zeros = require( '@stdlib/ndarray-zeros' );
var slice = require( '@stdlib/ndarray-slice' );
var E = require( '@stdlib/slice-multi' );
var S = require( '@stdlib/slice-ctor' );
var flags = require( '@stdlib/ndarray-base-flags' );

// Create an array:
var x = zeros( [ 10, 10, 10, 10 ] );
// returns <ndarray>

// Define some slices:
var slices = [
    // :,:,:,:
    E( null, null, null, null ),

    // 5:10,4,2:4,::-1
    E( S( 5, 10 ), 4, S( 2, 4 ), S( null, null, -1 ) ),

    // :,:,2,:
    E( null, null, 2, null ),

    // 1,2,3,:
    E( 1, 2, 3, null ),

    // 1,3,::2,4::2
    E( 1, 3, S( null, null, 2 ), S( 4, null, 2 ) )
];

// Retrieve the flags for each slice...
var s;
var i;
for ( i = 0; i < slices.length; i++ ) {
    s = slice( x, slices[ i ] );
    console.log( '%s', JSON.stringify( flags( s, false ) ) );
}
```

</section>

<!-- /.examples -->

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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].

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[npm-image]: http://img.shields.io/npm/v/@stdlib/ndarray-base-flags.svg
[npm-url]: https://npmjs.org/package/@stdlib/ndarray-base-flags

[test-image]: https://github.com/stdlib-js/ndarray-base-flags/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/ndarray-base-flags/actions/workflows/test.yml?query=branch:v0.2.3

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/ndarray-base-flags/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/ndarray-base-flags?branch=main

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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-flags/tree/deno
[deno-readme]: https://github.com/stdlib-js/ndarray-base-flags/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/ndarray-base-flags/tree/umd
[umd-readme]: https://github.com/stdlib-js/ndarray-base-flags/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/ndarray-base-flags/tree/esm
[esm-readme]: https://github.com/stdlib-js/ndarray-base-flags/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/ndarray-base-flags/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/ndarray-base-flags/main/LICENSE

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

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