As is the case with Visual Basic, when a variable
is introduced in CitectVBA, it is not necessary to declare it first
(see Option Explicit
statement for an exception to this rule). When a variable is
used but not declared, it is implicitly created as a variant data
type. Variants can also be declared explicitly using As Variant. Both of the following example
declarations as treated identically in CitectVBA:
Dim vntVar ' implicit variant declaration
Dim vntVar As Variant ' explicit variant declaration
The IsEmpty( )
function can be used to find out if a variant variable has been
previously assigned a value.