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8 de ene. de 2012 · Non-virtual member functions are resolved statically. member function are binding statically at compile-time based on the type of the pointer (or reference) to the object. In contrast, virtual member functions are binding dynamically at run-time.
31 de oct. de 2017 · Non-virtual member functions are resolved statically. That is, the member function is selected statically (at compile-time) based on the type of the pointer (or reference) to the object. In contrast, virtual member functions are resolved dynamically (at run-time).
13 de sept. de 2011 · Yes. A non-virtual destructor signifies that a class should not be used as a base-class. Not really; a non-virtual destructor signifies that deleting an instance of derived via a base pointer will not work. For example: class Base {}; class Derived : public Base {}; Base* b = new Derived; delete b; // Does not call Derived's destructor!
The non-virtual interface pattern (NVI) controls how methods in a base class are overridden. Such methods may be called by clients and overridable methods with core functionality. It is a pattern that is strongly related to the template method pattern.
3 de feb. de 2016 · Non-virtual functions are called based on the type that the compiler sees. If you have a Base* variable, then calling non-virtual functions will call the Base functions. That's the difference between virtual and non-virtual; calling a virtual function always calls the function that is appropriate for the object.
Calling a virtual function is fast — almost as fast as calling a non-virtual function. You don’t get any additional per-call overhead no matter how deep the inheritance gets. You could have 10 levels of inheritance, but there is no “chaining” — it’s always the same — fetch, fetch, call.
1 de jun. de 2022 · The virtual specifier specifies that a non-static member function is virtual and supports dynamic dispatch. It may only appear in the decl-specifier-seq of the initial declaration of a non-static member function (i.e., when it is declared in the class definition). Explanation.
