isUppercase

Test if a value is an uppercase string.

Installation

npm install @stdlib/assert-is-uppercase

Usage

var isUppercase = require( '@stdlib/assert-is-uppercase' );

isUppercase( value )

Tests if a value is an uppercase string.

var bool = isUppercase( 'HELLO' );
// returns true

bool = isUppercase( 'salt and light' );
// returns false

Notes

• The function validates that a value is a string. For all other types, the function returns false.

Examples

var isUppercase = require( '@stdlib/assert-is-uppercase' );

var bool = isUppercase( 'HELLO' );
// returns true

bool = isUppercase( '' );
// returns false

bool = isUppercase( 'Hello' );
// returns false

bool = isUppercase( 'hello' );
// returns false

See Also

• @stdlib/assert-is-uppercase-cli: CLI package for use as a command-line utility.
• @stdlib/assert-is-lowercase: test if a value is a lowercase string.
• @stdlib/assert-is-string: test if a value is a string.

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.