@stdlib/assert-is-lowercase
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    0.0.7 • Public • Published

    isLowercase

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    Test if a value is a lowercase string.

    Installation

    npm install @stdlib/assert-is-lowercase

    Usage

    var isLowercase = require( '@stdlib/assert-is-lowercase' );

    isLowercase( value )

    Tests if a value is a lowercase string.

    var bool = isLowercase( 'salt and light' );
    // returns true
    
    bool = isLowercase( 'HELLO' );
    // returns false
    
    bool = isLowercase( 'World' );
    // returns false

    Notes

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

    Examples

    var isLowercase = require( '@stdlib/assert-is-lowercase' );
    
    var bool = isLowercase( 'hello' );
    // returns true
    
    bool = isLowercase( '' );
    // returns false
    
    bool = isLowercase( 'Hello' );
    // returns false
    
    bool = isLowercase( 'HELLO' );
    // returns false

    CLI

    Installation

    To use the module as a general utility, install the module globally

    npm install -g @stdlib/assert-is-lowercase

    Usage

    Usage: is-lowercase [options] [<string>]
    
    Options:
    
      -h,    --help                Print this message.
      -V,    --version             Print the package version.
    

    Examples

    $ is-lowercase BEEP
    false

    To use as a standard stream,

    $ echo -n 'boop' | is-lowercase
    true

    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.

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    License

    See LICENSE.

    Copyright

    Copyright © 2016-2021. The Stdlib Authors.

    Install

    npm i @stdlib/assert-is-lowercase

    Homepage

    stdlib.io

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    Version

    0.0.7

    License

    Apache-2.0

    Unpacked Size

    38.5 kB

    Total Files

    12

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    Collaborators

    • stdlib-bot
    • kgryte
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    • rreusser