OCL Operators one
This page was created by Stephanie@mdriven.net on 2023-03-28. Last edited by Edgar on 2025-01-20.

one ( expr : OclExpression ) : Boolean

Returns true if there is only one element contained in self that validates the condition expr, false otherwise.

Expression Result
Sequence{1.2, 2.3, 5.2, 0.9}->one(self < 1) true
Sequence{1.2, 2.3, 5.2, 0.9}->one(self < 2) false
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