isNullArray

Test if a value is an array-like object containing only null values.

Installation

npm install @stdlib/assert-is-null-array

Usage

var isNullArray = require( '@stdlib/assert-is-null-array' );

isNullArray( value )

Tests if a value is an array-like object containing only null values.

var bool = isNullArray( [ null, null, null ] );
// returns true

bool = isNullArray( [ null, NaN, null ] );
// returns false

Examples

var isNullArray = require( '@stdlib/assert-is-null-array' );

var bool = isNullArray( [ null ] );
// returns true

bool = isNullArray( [ null, null, null ] );
// returns true

bool = isNullArray( null );
// returns false

bool = isNullArray( 'beep' );
// returns false

bool = isNullArray( [ null, 'boop' ] );
// returns false

bool = isNullArray( [] );
// returns false

See Also

• @stdlib/assert-is-array: test if a value is an array.
• @stdlib/assert-is-null: test if a value is null.

Notice

This package is part of 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, see the main project repository.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.