IsEmpty

This function determines whether a variable has been initialized.

Syntax

IsEmpty(expression)

Parameters

expression

Any expression. However, because IsEmpty is used to determine if individual variables are initialized, the expression parameter is most often a single variable name.

Return Values

Returns True if the variable is uninitialized or is explicitly set to Empty; otherwise, it returns False.

Remarks

IsEmpty always returns True if expression contains more than one variable.