Ad
related to: when to use visitor pattern in excel worksheet
Search results
Results from the WOW.Com Content Network
The Visitor [1] design pattern is one of the twenty-three well-known Gang of Four design patterns that describe how to solve recurring design problems to design flexible and reusable object-oriented software, that is, objects that are easier to implement, change, test, and reuse.
The single-serving visitor pattern should be used when visitors do not need to remain in memory. This is often the case when visiting a hierarchy of objects (such as when the visitor pattern is used together with the composite pattern) to perform a single task on it, for example counting the number of cameras in a 3D scene.
Single-serving visitor pattern Optimise the implementation of a visitor that is allocated, used only once, and then deleted Specification pattern Recombinable business logic in a boolean fashion State pattern A clean way for an object to partially change its type at runtime Strategy pattern Algorithms can be selected on the fly, using composition
Using a visitor is a complementary approach to doing something with a collection of objects. In particular, a core idea of the visitor pattern is that you can prescribe different operations for different polymorphic (or static) types you visit. Also, with the visitor pattern, different objects have control over traversal order.
Elon Musk said Starlink satellite internet is inactive in India, his first comments since authorities seized two of the company's devices in recent weeks, one in an armed conflict zone and another ...
Berberine, a plant compound traditionally used in herbal medicine, is today commonly stocked on the shelves of health food stores and pharmacies as a supplement. Beyond weight loss, berberine also ...
The above example can be realized using the visitor pattern. It would require each animal class to implement an accept method accepting an object implementing the interface AnimalVisitor (adding non-local boilerplate code). The function animalToFood would be realized as the visit method of an implementation of AnimalVisitor.
I've been using it for years and don't plan to stop!" It gives a glowing complexion, as another serum convert confirmed : "This stuff is so amazing; after just a couple of weeks of use, I saw such ...
Ad
related to: when to use visitor pattern in excel worksheet