PropertyHandle :: IsEmpty - Is property instance empty?
The function returns whether the property handle is empty ( YES ) or not ( NO ). A property is considered as empty when it is a collection with no instances or (if it is not a collection) when:
- the value is false ( LOGICAL )
- the value is 0 ( INT , REAL , Enumeration , DATE , TIME , DATETIME )
- the value is 0, ' ' or 'N' ( CHAR , STRING , CHAR , MEMO )
- when all values for a structured instance are empty
Return value: Return value ( logical )
The function returns YES when the question was answered positively. Otherwise it returns NO .