Determine if a String has been Initialized

This example shows how to do split a comma-separated string into fields.

Dim s As String
If StrPtr(s) = 0 Then
    Print "Not initialized!"
Else
    Print "String is initialized."
End If

s = "123"
If StrPtr(s) = 0 Then
    Print "Not initialized!"
Else
    Print "String is initialized."
End If