| 11. | Both languages support nearly all standards of object-oriented programming except multiple inheritance : polymorphism, overload, virtual functions.
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| 12. | There is a keyword called " virtual " in programming such as in Virtual function or in Virtual method table.
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| 13. | For example, a union in C + + 98 cannot contain a class that has virtual functions or nontrivial constructors or destructors.
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| 14. | Virtual functions are simple to write, but it is usually impossible to add new operations to nodes without access to the source code.
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| 15. | This technique achieves a similar effect to the use of virtual functions, without the costs ( and some flexibility ) of dynamic polymorphism.
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| 16. | Due to the large number of messages involved, providing a separate virtual function for each Windows message results in a prohibitively large vtable.
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| 17. | This message-map facility is designed to be similar to virtual functions but has additional benefits not possible with C + + virtual functions.
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| 18. | This message-map facility is designed to be similar to virtual functions but has additional benefits not possible with C + + virtual functions.
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| 19. | In C + + this takes the form of virtual functions and runtime type identification, while Objective-C offers dynamic typing and reflection.
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| 20. | The SR-IOV offers different virtual functions to different virtual components ( e . g . network adapter ) on a physical server machine.
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