Documentation:OCLOperators notEmpty: Difference between revisions

OCLOperators notEmpty

Latest revision as of 15:42, 10 February 2024

notEmpty () : Boolean

Returns true if self contains at least one element - otherwise, returns false.

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

Warning!

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.

@@ Line 1: / Line 1: @@
-Returns true of the collection is not empty
+=== notEmpty () : Boolean ===
+Returns true if ''self'' contains at least one element - otherwise, returns false.
+{| class="wikitable"
+!Expression
+!Result
+|-
+|Sequence{2, 'a'}->notEmpty()
+|true
+|-
+|Sequence{null}->notEmpty()
+|true
+|-
+|Sequence{}->notEmpty()
+|false
+|}
+===== Warning! =====
+''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]]
+[[Category:OCL Collection Operators]]
+{{Edited|July|12|2024}}