c destructor

Item 7: declare Destructors (destructor) as virtual in polymorphic base classes (polymorphism base class) By Scott Meyers Translator: fatalerror99 (itepub's nirvana) Release: http://blog.csdn.net/fatalerror99/ There are many ways to get the time, so

The theoretical premise of virtual destructor isAfter executing the destructor of the subclass, the fictitious function of the parent class is bound to be executed.Then when you use Delete to release a subclass object that is instantiated by a

C ++ inherits the calling sequence and virtual destructor of the destructor in the destructor. First, let's talk about the constructor. We all know that the constructor can call member variables, and the Child class in inheritance is to turn the

turn from: http://blog.csdn.net/liuning800203/article/details/6455226 Releasing resources with destructors Destructors are used to deconstruct instances of classes. 1 The destructor cannot be defined in the structure. Destructors can only be used

Chapter Review:The 1th chapter of effective C + + makes himself accustomed to c++-reading notesEffective C + + 2nd structure/destructor/assignment operation (1)-Reading notes"Effective C + +" 8th custom new and delete-reading notesArticle 05:

Reference: http://www.weixueyuan.net/view/6373.htmlSummarize:A constructor cannot be declared as a virtual function, and a destructor can be declared as a virtual function.After the destructor of the base class is declared as a virtual function, the

Declare the destructor of the polymorphism base class as a virtual function. Now we want to consider a timer problem. First we create a base class named timekeeper, and then create various derived classes based on it, so that we can use different

In C ++, virtual constructor cannot be declared, but virtual destructor can be declared. Polymorphism means that different objects have different behavior characteristics for the same message. As the basis of Runtime polymorphism, virtual functions

From the syntax above, it is possible for destructors to throw exceptions, and C + + does not prevent destructors from throwing exceptions, but C + + does not recommend this practice, and it is dangerous to throw exceptions from

C + + static correlation and dynamic Association, C + + is how to achieve polymorphismIn real life, there are many examples of polymorphism. Let's analyze how people deal with polymorphism. For example, when a freshman is enrolled in a university,