npm package: @stdlib/ndarray-vector-bool
Description: Create a boolean vector (i.e., a one-dimensional ndarray).
Author: The Stdlib Authors
Latest version: 0.1.1

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# BooleanVector

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> Create a boolean vector (i.e., a one-dimensional [ndarray][@stdlib/ndarray/ctor]).

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<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-vector-bool
```

</section>

<section class="usage">

## Usage

```javascript
var BooleanVector = require( '@stdlib/ndarray-vector-bool' );
```

#### BooleanVector( \[options] )

Returns a one-dimensional boolean [ndarray][@stdlib/ndarray/ctor].

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

var arr = new BooleanVector();
// returns <ndarray>

var len = numel( arr );
// returns 0
```

The function accepts the following options:

-   **order**: specifies whether an [ndarray][@stdlib/ndarray/ctor] is `'row-major'` (C-style) or `'column-major'` (Fortran-style). Default: `'row-major'`.
-   **mode**: specifies how to handle indices which exceed array dimensions (see [`ndarray`][@stdlib/ndarray/ctor]). Default: `'throw'`.
-   **readonly**: boolean indicating whether an array should be **read-only**. Default: `false`.

#### BooleanVector( length\[, options] )

Returns a one-dimensional boolean [ndarray][@stdlib/ndarray/ctor] having a specified `length`.

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

var arr = new BooleanVector( 5 );
// returns <ndarray>

var len1 = numel( arr );
// returns 5
```

#### BooleanVector( obj\[, options] )

Creates a one-dimensional boolean [ndarray][@stdlib/ndarray/ctor] from an array-like object or iterable.

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

var arr = new BooleanVector( [ true, false, true ] );
// returns <ndarray>

var len1 = numel( arr );
// returns 3
```

#### BooleanVector( buffer\[, byteOffset\[, length]]\[, options] )

Returns a one-dimensional boolean [ndarray][@stdlib/ndarray/ctor] view of an [`ArrayBuffer`][@stdlib/array/buffer].

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

var buf = new ArrayBuffer( 32 );

var arr1 = new BooleanVector( buf );
// returns <ndarray>

var len1 = numel( arr1 );
// returns 32

var arr2 = new BooleanVector( buf, 16 );
// returns <ndarray>

var len2 = numel( arr2 );
// returns 16

var arr3 = new BooleanVector( buf, 16, 1 );
// returns <ndarray>

var len3 = numel( arr3 );
// returns 1
```

</section>

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</section>

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<section class="examples">

## Examples

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

```javascript
var bernoulli = require( '@stdlib/random-array-bernoulli' );
var every = require( '@stdlib/ndarray-every' );
var map = require( '@stdlib/ndarray-map' );
var BooleanVector = require( '@stdlib/ndarray-vector-bool' );

// Create a vector containing random values:
var x = new BooleanVector( bernoulli( 10, 0.9 ) );

// Determine whether every element is truthy:
var v = every( x );
console.log( v.get() );

// Define a function which inverts individual values:
function invert( v ) {
    return !v;
}

// Apply function:
var y = map( x, invert );

// Determine whether every element is truthy:
v = every( y );
console.log( v.get() );
```

</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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