IsEmpty Function

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  Home > Functions > IsEmpty Function
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    • IsEmpty Function

    Returns a Boolean value indicating whether a variable has been initialized.

    IsEmpty(expression)

    The expression argument can be any expression. However, because IsEmpty is used to determine if individual variables are initialized, the expression argument is most often a single variable name.

    Remarks

    IsEmpty returns True if the variable is uninitialized, or is explicitly set to Empty ; otherwise, it returns False. False is always returned if expression contains more than one variable.

    The following example uses the IsEmpty function to determine whether a variable has been initialized: 

    Dim MyVar, MyCheck
MyCheck = IsEmpty(MyVar)   ' Returns True.
MyVar = Null   ' Assign Null.
MyCheck = IsEmpty(MyVar)   ' Returns False.
MyVar = Empty   ' Assign Empty.
MyCheck = IsEmpty(MyVar)   ' Returns True.

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