isEmpty () : Boolean

Returns true if self is empty - otherwise, returns false.

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

Warning!

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

See also: OCLOperators notEmpty