Tag: destructor

Classes and Objects: Constructors and Destructors

1. Definition of constructor and destructor Constructor: is a function called after the class is initialized. It contains parameters and can be overloaded. Destructor: A function called when a class is destroyed. It contains no parameters, cannot be overloaded, and is called only once. Among them, the syntax of the destructor is: name() { information…… […]

An in-depth exploration of C++ polymorphism ③ – Virtual destructor

Foreword The first two chapters explored C++ polymorphic virtual function call links and inheritance relationships. This chapter will explore the working principle of virtual destructor. When a class object with virtual destructor polymorphism is released: A polymorphic class with an inheritance relationship will destruct the derived class first and then the base class, which is […]

[C++] Polymorphism ⑤ (Virtual destructor | Virtual destructor syntax | Virtual destructor meaning | When the parent class pointer points to the child class object, the parent class and the child class use virtual virtual destructor | Code example)

Article directory 1. Virtual destructor 1. The constructor cannot be a virtual function 2. The destructor can be a virtual function 3. Virtual destructor syntax 4. The meaning of virtual destructor 2. Code example – virtual destructor 1. Code example – Failure to use a virtual destructor results in the subclass destructor being unable to […]

C++6: Destructor

1. Destructor The function name is the same as the class name. Add ~ in front of the function name. The function has no return value and no parameters. When the object is destroyed, the system will automatically call it (the destructor can release the member space). Function: Release data members in the class (for […]

.Net destructor discussed again (source code analysis)

1. PrefaceThis article continues to look at some extended knowledge of destructors. 2. OverviewThere are currently three tags discovered by the destructor, and they are introduced one by one here. First some code: internal class Program : IDisposable{ static void Main(string[] args){ StreamReader? streamReader = null; streamReader = new StreamReader(“Test_.dll”); streamReader?.Dispose(); Console.ReadLine(); } ~Program(){ Console.WriteLine(“The […]

[Reverse] 03-20 Expanded Section C++ Code Completion; Troubleshooting on Class Destructor Called as Function Parameter

To see the latest code for PE structure operations, click on the homepage to view! ! Compared with the code in the previous section, this article mainly fixes the Analyze function in the PE class in the code of the previous article, so that whether it is Before_Stretch_Data, Stretch_Data or Shrink_Data, the PE structure can […]

[QandA C++] Summary of key knowledge on references, pointers, rewriting, overloading, redefinition, public, protected, private, friends, deep and shallow copies, new, malloc, nullptr, NULL, destructor, etc.

Table of Contents The difference between reference and pointer rewrite, overload, redefine public/protected/private friends Deep copy and shallow copy new and malloc pointer array, array pointer constant pointer, pointer constant nullptr and NULL What is a destructor The difference between references and pointers A pointer is an entity and needs to allocate memory space, while […]

A brief discussion on C++|Construction and Destructor

Initialization and processing of an object 1.1 Constructor and Destructor C++ has constructors and destructors. These two functions will be automatically called by the compiler to complete object initialization and cleanup. Object initialization and cleanup are things that the compiler forces us to do, so if we do not provide construction and destruction, the constructor […]