https://github.com/stdlib-js/assert-is-nan-array
Test if a value is an array-like object containing only NaN values.
https://github.com/stdlib-js/assert-is-nan-array
array assert assertion is isarray istyped istypedarray javascript nan node node-js nodejs non-numeric stdlib typed typed-array util utilities utility utils
Last synced: 30 days ago
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Test if a value is an array-like object containing only NaN values.
- Host: GitHub
- URL: https://github.com/stdlib-js/assert-is-nan-array
- Owner: stdlib-js
- License: apache-2.0
- Created: 2021-06-14T16:42:15.000Z (almost 4 years ago)
- Default Branch: main
- Last Pushed: 2024-12-30T03:44:33.000Z (5 months ago)
- Last Synced: 2025-04-12T06:58:01.297Z (about 2 months ago)
- Topics: array, assert, assertion, is, isarray, istyped, istypedarray, javascript, nan, node, node-js, nodejs, non-numeric, stdlib, typed, typed-array, util, utilities, utility, utils
- Language: JavaScript
- Homepage: https://github.com/stdlib-js/stdlib
- Size: 677 KB
- Stars: 1
- Watchers: 3
- 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
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README
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# isNaNArray
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
> Test if a value is an array-like object containing only NaN values.
## Installation
```bash
npm install @stdlib/assert-is-nan-array
```
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 isNaNArray = require( '@stdlib/assert-is-nan-array' );
```
#### isNaNArray( value )
Tests if a `value` is an array-like object containing **only** `NaN` values.
```javascript
var bool = isNaNArray( [ NaN, NaN, NaN ] );
// returns true
bool = isNaNArray( [ NaN, 2 ] );
// returns false
```
#### isNaNArray.primitives( value )
Tests if a `value` is an array-like object containing **only** primitive `NaN` values.
```javascript
var Number = require( '@stdlib/number-ctor' );
var bool = isNaNArray.primitives( [ NaN, NaN, NaN ] );
// returns true
bool = isNaNArray.primitives( [ NaN, new Number( NaN ) ] );
// returns false
```
#### isNaNArray.objects( value )
Tests if a `value` is an array-like object containing **only** object `NaN` values.
```javascript
var Number = require( '@stdlib/number-ctor' );
var bool = isNaNArray.objects( [ new Number( NaN ), new Number( NaN ) ] );
// returns true
bool = isNaNArray.objects( [ NaN, new Number( NaN ) ] );
// returns false
bool = isNaNArray.objects( [ NaN, NaN, NaN ] );
// returns false
```
## Examples
```javascript
var Number = require( '@stdlib/number-ctor' );
var Float64Array = require( '@stdlib/array-float64' );
var isNaNArray = require( '@stdlib/assert-is-nan-array' );
var bool = isNaNArray( [ NaN ] );
// returns true
bool = isNaNArray( [ NaN, NaN, NaN ] );
// returns true
bool = isNaNArray( [ new Number( NaN ), NaN, NaN ] );
// returns true
bool = isNaNArray( new Float64Array( [ NaN, NaN ] ) );
// returns true
bool = isNaNArray( NaN );
// returns false
bool = isNaNArray( [ 'a', 'b', 'c' ] );
// returns false
bool = isNaNArray( [ 'a', NaN ] );
// returns false
```
* * *
## See Also
- [`@stdlib/assert-is-nan`][@stdlib/assert/is-nan]: test if a value is NaN.
* * *
## 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 © 2016-2024. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/assert-is-nan-array.svg
[npm-url]: https://npmjs.org/package/@stdlib/assert-is-nan-array
[test-image]: https://github.com/stdlib-js/assert-is-nan-array/actions/workflows/test.yml/badge.svg?branch=main
[test-url]: https://github.com/stdlib-js/assert-is-nan-array/actions/workflows/test.yml?query=branch:main
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/assert-is-nan-array/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/assert-is-nan-array?branch=main
[chat-image]: https://img.shields.io/gitter/room/stdlib-js/stdlib.svg
[chat-url]: https://app.gitter.im/#/room/#stdlib-js_stdlib:gitter.im
[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/assert-is-nan-array/tree/deno
[deno-readme]: https://github.com/stdlib-js/assert-is-nan-array/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/assert-is-nan-array/tree/umd
[umd-readme]: https://github.com/stdlib-js/assert-is-nan-array/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/assert-is-nan-array/tree/esm
[esm-readme]: https://github.com/stdlib-js/assert-is-nan-array/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/assert-is-nan-array/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-is-nan-array/main/LICENSE
[@stdlib/assert/is-nan]: https://github.com/stdlib-js/assert-is-nan