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OCLOperators isEmpty

From MDrivenWiki

isEmpty () : Boolean

Returns true if self is empty, false otherwise.

Expression Result
Sequence{2, 'a'}->isEmpty() false
Sequence{null}->isEmpty() false
Sequence{}->isEmpty() true

Never use ->isEmpty on a value type. The value will be converted to a list (with the value as it's only item) and that will always evaluate to False.

See also: OCLOperators notEmpty