Powershell function :: Tests to see if Char value is "empty".

CharIsEmpty.ps1

# Tests to see if Char value is "empty".
# Ran into a need to test for "empty" [Char] DriveLetters when using Get-Partition,
# and the usual PS comparison techniques weren't working with Char (ie: Char is never Null).
# If you (re)cast it to a Boolean, it'll return expected $True\$False to test for "Empty".
# This Gist exists as a reminder of that.

function CharIsEmpty {
	param (
		[Parameter(Mandatory=$True)]
		[char]$CharToTest
	)
	
	# $True if "empty".
	return (!([bool]$CharToTest))
}

# Usage:
# If (CharIsEmpty($MyChar)) { Write-Host 'Char is "empty".' }