npm package: @stdlib/random-array-tools-nullary
Description: Constructor for creating arrays filled with pseudorandom values drawn from a nullary PRNG.
Author: The Stdlib Authors
Latest version: 0.2.3

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</details>

# Nullary

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

> Constructor for creating arrays filled with pseudorandom values drawn from a nullary PRNG.

<section class="installation">

## Installation

```bash
npm install @stdlib/random-array-tools-nullary
```

</section>

<section class="usage">

## Usage

```javascript
var Random = require( '@stdlib/random-array-tools-nullary' );
```

#### Random( prng, dtypes, dtype )

Constructor for creating arrays filled with pseudorandom values drawn from a nullary PRNG.

```javascript
var exponential = require( '@stdlib/random-base-exponential' );

var dtypes = [ 'float64', 'float32', 'generic' ];
var defaultDType = 'float64';

var random = new Random( exponential.factory( 2.0 ), dtypes, defaultDType );
```

The constructor has the following parameters:

-   **prng**: nullary pseudorandom value generator.
-   **dtypes**: list of supported output data types.
-   **dtype**: default output data type.

#### Random.prototype.generate( len\[, options] )

Returns an array filled with pseudorandom values drawn from a nullary PRNG.

```javascript
var exponential = require( '@stdlib/random-base-exponential' );

var dtypes = [ 'float64', 'float32', 'generic' ];
var defaultDType = 'float64';

var random = new Random( exponential.factory( 2.0 ), dtypes, defaultDType );

var v = random.generate( 10 );
// returns <Float64Array>
```

The method has the following parameters:

-   **len**: output array length.
-   **options**: function options.

The method accepts the following options:

-   **dtype**: output array data type. Setting this option, overrides the default output array data type.

By default, the method returns an array having the default output array data type. To override the default, set the `dtype` option.

```javascript
var exponential = require( '@stdlib/random-base-exponential' );

var dtypes = [ 'float64', 'float32', 'generic' ];
var defaultDType = 'float64';

var random = new Random( exponential.factory( 2.0 ), dtypes, defaultDType );

var v = random.generate( 10, {
    'dtype': 'float32'
});
// returns <Float32Array>
```

#### Random.prototype.assign( out )

Fills an array with pseudorandom values drawn from a nullary PRNG.

```javascript
var exponential = require( '@stdlib/random-base-exponential' );
var zeros = require( '@stdlib/array-zeros' );

var dtypes = [ 'float64', 'float32', 'generic' ];
var defaultDType = 'float64';

var random = new Random( exponential.factory( 2.0 ), dtypes, defaultDType );

var out = zeros( 10, 'float64' );
// returns <Float64Array>

var v = random.assign( out );
// returns <Float64Array>

var bool = ( v === out );
// returns true
```

The method has the following parameters:

-   **out**: output array.

</section>

<!-- /.usage -->

<section class="notes">

</section>

<!-- /.notes -->

<section class="examples">

## Examples

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

```javascript
var exponential = require( '@stdlib/random-base-exponential' );
var dtypes = require( '@stdlib/array-dtypes' );
var Random = require( '@stdlib/random-array-tools-nullary' );

var dt = dtypes( 'real_floating_point_and_generic' );
var random = new Random( exponential.factory( 2.0 ), dt, 'float64' );

var x = random.generate( 10 );
// returns <Float64Array>

x = random.generate( 10, {
    'dtype': 'float32'
});
// returns <Float32Array>

x = random.generate( 10, {
    'dtype': 'generic'
});
// returns [...]
```

</section>

<!-- /.examples -->

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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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