npm package: @stdlib/ndarray-base-assert-is-read-only
Description: Test if an ndarray is read-only.
Author: The Stdlib Authors
Latest version: 0.2.3

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# isReadOnly

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> Test if an ndarray is **read-only**.

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</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-base-assert-is-read-only
```

</section>

<section class="usage">

## Usage

```javascript
var isReadOnly = require( '@stdlib/ndarray-base-assert-is-read-only' );
```

#### isReadOnly( arr )

Tests if an ndarray is **read-only**.

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

var x = array( [ 1, 2, 3, 4 ], {
    'readonly': true
});
var bool = isReadOnly( x );
// returns true
```

</section>

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<section class="examples">

## Examples

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

```javascript
var array = require( '@stdlib/ndarray-array' );
var isReadOnly = require( '@stdlib/ndarray-base-assert-is-read-only' );

var x = array( [ [ 1, 2 ], [ 3, 4 ] ], {
    'readonly': true
});
var bool = isReadOnly( x );
// returns true

x = array( [ [ 1, 2 ], [ 3, 4 ] ], {
    'readonly': false
});
bool = isReadOnly( x );
// returns false

x = array( [ [ 1, 2 ], [ 3, 4 ] ] );
bool = isReadOnly( x );
// returns false
```

</section>

<!-- /.examples -->

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* * *

## 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].

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---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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