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  2. Destructor (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Destructor_(computer...

    In inheritance hierarchies, the declaration of a virtual destructor in the base class ensures that the destructors of derived classes are invoked properly when an object is deleted through a pointer-to-base-class. Objects that may be deleted in this way need to inherit a virtual destructor. A destructor should never throw an exception. [8]

  3. Virtual function - Wikipedia

    en.wikipedia.org/wiki/Virtual_function

    Virtual functions allow a program to call methods that don't necessarily even exist at the moment the code is compiled. [citation needed] In C++, virtual methods are declared by prepending the virtual keyword to the function's declaration in the base class. This modifier is inherited by all implementations of that method in derived classes ...

  4. Curiously recurring template pattern - Wikipedia

    en.wikipedia.org/wiki/Curiously_recurring...

    To elaborate on the above example, consider a base class with no virtual functions. Whenever the base class calls another member function, it will always call its own base class functions. When we derive a class from this base class, we inherit all the member variables and member functions that were not overridden (no constructors or destructors).

  5. Special member functions - Wikipedia

    en.wikipedia.org/wiki/Special_member_functions

    For example, the compiler generated destructor will destroy each sub-object (base class or member) of the object. The compiler generated functions will be public , non- virtual [ 3 ] and the copy constructor and assignment operators will receive const& parameters (and not be of the alternative legal forms ).

  6. Virtual inheritance - Wikipedia

    en.wikipedia.org/wiki/Virtual_inheritance

    Suppose a pure virtual method is defined in the base class. If a deriving class inherits the base class virtually, then the pure virtual method does not need to be defined in that deriving class. However, if the deriving class does not inherit the base class virtually, then all virtual methods must be defined.

  7. Rule of three (C++ programming) - Wikipedia

    en.wikipedia.org/wiki/Rule_of_three_(C++...

    destructor; copy constructor; copy assignment operator; These three functions are special member functions. If one of these functions is used without first being declared by the programmer it will be implicitly implemented by the compiler with the following default semantics: Destructor – call the destructors of all the object's class-type ...

  8. Run-time type information - Wikipedia

    en.wikipedia.org/wiki/Run-time_type_information

    RTTI is available only for classes that are polymorphic, which means they have at least one virtual method. In practice, this is not a limitation because base classes must have a virtual destructor to allow objects of derived classes to perform proper cleanup if they are deleted from a base pointer. Some compilers have flags to disable RTTI.

  9. Virtual destructor - Wikipedia

    en.wikipedia.org/?title=Virtual_destructor&...

    Language links are at the top of the page across from the title.