isUppercase
Test if a value is an uppercase string.
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 astring
. For all other types, the function returnsfalse
.
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
CLI
Usage
Usage: is-uppercase [options] [<string>]
Options:
-h, --help Print this message.
-V, --version Print the package version.
Examples
$ is-uppercase BEEP
true
To use as a standard stream,
$ echo -n 'boop' | is-uppercase
false