OCLOperators notEmpty
This page was created by Alexandra on 2017-08-13. Last edited by 62.169.16.147 on 2026-09-12.
notEmpty () : Boolean[edit source]
Returns true if self contains at least one element - otherwise, returns false.
| Expression | Result |
|---|---|
| Sequence{2, 1}->notEmpty | true |
| Sequence{nil}->notEmpty | false |
| <class>.EmptyList->notEmpty | false |
Example[edit source]
Given a Class Car
Car.allinstances->subsequence(0,49)->notEmpty
Will return true or false
Warning![edit source]
Never use ->notEmpty on a value type. The value will be converted to a list (with the value as its only item) and that will always evaluate to True.
See also: OCLOperators isEmpty