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Petrutiu Mihai
2016-07-26 14:33:18 +03:00
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@@ -502,6 +502,7 @@ Sequence diagram:
### a. Pattern description ### a. Pattern description
* Visitor pattern allows for one or more operation to be applied to a set of objects at runtime, decoupling the operations from the object structure. * Visitor pattern allows for one or more operation to be applied to a set of objects at runtime, decoupling the operations from the object structure.
* Visitor is similar to Iterator, the difference is that visitor pattern allows to process more complex structure with different types * Visitor is similar to Iterator, the difference is that visitor pattern allows to process more complex structure with different types
* Represent an operation to be performed on elements of an object structure. Visitor lets you define a new operation without changing the classes of the elements on which it operates. [GoF]
[VisitorClassDiagram]: https://github.com/MihaiTheCoder/BehavioralPatterns/blob/master/BehavioralPatternsDiagrams/VisitorPattern/VisitorPatternClassDiagram.png "Visitor class diagram" [VisitorClassDiagram]: https://github.com/MihaiTheCoder/BehavioralPatterns/blob/master/BehavioralPatternsDiagrams/VisitorPattern/VisitorPatternClassDiagram.png "Visitor class diagram"
[VisitorSequenceDiagram]: https://github.com/MihaiTheCoder/BehavioralPatterns/blob/master/BehavioralPatternsDiagrams/VisitorPattern/VisitorPatternSequenceDiagram.png "Visitor sequence diagram" [VisitorSequenceDiagram]: https://github.com/MihaiTheCoder/BehavioralPatterns/blob/master/BehavioralPatternsDiagrams/VisitorPattern/VisitorPatternSequenceDiagram.png "Visitor sequence diagram"