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8.4.39 IsEmpty Function

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

Syntax

IsEmpty(expression)

Arguments

expression
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.
 

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