Question

I am working with some old code and it defines a global variable like this…

Public myvar

This variable is never assigned a value, but is later used in a test…

If myvar <> somevalue then
    'do something
End If

For what values of somevalue would that something be done?

Answer 1

• The default value is Empty.
• “Something will be done” for any value except Empty, 0 or ""…
  • … for the value Nothing, the code will raise an error and “something will not be done”.

From the VB6 documentation

When variables are initialized, a
numeric variable is initialized to 0,
a variable-length string is
initialized to a zero-length string
(“”), and a fixed-length string is
filled with zeros. Variant variables
are initialized to Empty. Each element
of a user-defined type variable is
initialized as if it were a separate
variable.