https://github.com/stdlib-js/ndarray-vector-bool
Create a boolean vector (i.e., a one-dimensional ndarray).
https://github.com/stdlib-js/ndarray-vector-bool
bool boolean constructor ctor data javascript ndarray node node-js nodejs stdlib structure types vec vector
Last synced: 3 days ago
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Create a boolean vector (i.e., a one-dimensional ndarray).
- Host: GitHub
- URL: https://github.com/stdlib-js/ndarray-vector-bool
- Owner: stdlib-js
- License: apache-2.0
- Created: 2025-05-19T09:10:02.000Z (11 months ago)
- Default Branch: main
- Last Pushed: 2026-04-17T11:17:14.000Z (10 days ago)
- Last Synced: 2026-04-17T13:25:37.338Z (10 days ago)
- Topics: bool, boolean, constructor, ctor, data, javascript, ndarray, node, node-js, nodejs, stdlib, structure, types, vec, vector
- Language: JavaScript
- Homepage: https://github.com/stdlib-js/stdlib
- Size: 1.04 MB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Citation: CITATION.cff
- Security: SECURITY.md
- Notice: NOTICE
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README
About stdlib...
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# BooleanVector
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
> Create a boolean vector (i.e., a one-dimensional [ndarray][@stdlib/ndarray/ctor]).
## Installation
```bash
npm install @stdlib/ndarray-vector-bool
```
Alternatively,
- To load the package in a website via a `script` tag without installation and bundlers, use the [ES Module][es-module] available on the [`esm`][esm-url] branch (see [README][esm-readme]).
- If you are using Deno, visit the [`deno`][deno-url] branch (see [README][deno-readme] for usage intructions).
- For use in Observable, or in browser/node environments, use the [Universal Module Definition (UMD)][umd] build available on the [`umd`][umd-url] branch (see [README][umd-readme]).
The [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships.
To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.
## 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
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
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
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
var len1 = numel( arr1 );
// returns 32
var arr2 = new BooleanVector( buf, 16 );
// returns
var len2 = numel( arr2 );
// returns 16
var arr3 = new BooleanVector( buf, 16, 1 );
// returns
var len3 = numel( arr3 );
// returns 1
```
## Examples
```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() );
```
* * *
## 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 © 2016-2026. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/ndarray-vector-bool.svg
[npm-url]: https://npmjs.org/package/@stdlib/ndarray-vector-bool
[test-image]: https://github.com/stdlib-js/ndarray-vector-bool/actions/workflows/test.yml/badge.svg?branch=main
[test-url]: https://github.com/stdlib-js/ndarray-vector-bool/actions/workflows/test.yml?query=branch:main
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/ndarray-vector-bool/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/ndarray-vector-bool?branch=main
[chat-image]: https://img.shields.io/badge/zulip-join_chat-brightgreen.svg
[chat-url]: https://stdlib.zulipchat.com
[stdlib]: https://github.com/stdlib-js/stdlib
[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors
[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-vector-bool/tree/deno
[deno-readme]: https://github.com/stdlib-js/ndarray-vector-bool/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/ndarray-vector-bool/tree/umd
[umd-readme]: https://github.com/stdlib-js/ndarray-vector-bool/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/ndarray-vector-bool/tree/esm
[esm-readme]: https://github.com/stdlib-js/ndarray-vector-bool/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/ndarray-vector-bool/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/ndarray-vector-bool/main/LICENSE
[@stdlib/array/buffer]: https://github.com/stdlib-js/array-buffer
[@stdlib/ndarray/ctor]: https://github.com/stdlib-js/ndarray-ctor