View source for Documentation:OCLOperators select

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The <code>select</code> operator filters a source collection, returning a new collection of the same type containing only the elements that satisfy a specific condition. 

=== Syntax ===
<code>sourceCollection->select(iterator | condition)</code>

* '''sourceCollection''': The initial Set, Bag, or Sequence.
* '''iterator''': A variable representing each element during the evaluation.
* '''condition''': A boolean OclExpression. If <code>true</code>, the element is included in the result.

{| class="wikitable"
!Expression
!Result
|-
|<nowiki>Sequence{1, 2, 3}->select(i| i > 1)</nowiki>
|Sequence{2, 3}
|-
|<nowiki>Bag{1, 2, 3}->select(i| i > 1 )</nowiki>
|Bag{3, 2}
|-
|<nowiki>Set{1, 2, 3}->select(i| i > 1 )</nowiki>
|Set{3, 2}
|-
|<nowiki>Customer.allInstances->select(a | a.Name.SqlLike('%Alex%'))</nowiki>
|A collection of Customers whose name contains "Alex".
|}

{{Edited|July|12|2025}}


[[Category:Intermediate-Friendly]]
[[Category:OCL (Object Constraint Language)]]
[[Category:OCL Operators: Collection Navigation]]
[[Category:Priority 50]]