what member function

1. static member functions(1) A static member function is a special member function in a class that belongs to the entire class.(2) public static member functions can be accessed directly through the class name(3) public static member functions can

Static member functionsAs with static data members, we can also create a static member function that serves the entire service of a class rather than the specific object of a class. Static member functions, like static data members, are internal

Before I turn to the point, I think we should first put forward two of my own custom terms: class level members and object level members. I don't know if there is such a term in the C + + domain, but I think these two terms can help us understand

If you try to use C + + 's member function directly as a callback function, you will get an error, even if the compilation fails. Its error is that the normal C + + member function implies a transfer function as a parameter, that is, the "This"

One, the use of member function pointers In C + +, a pointer to a member function is a very special thing. For ordinary function pointers, it can be treated as an address and can be arbitrarily converted and invoked when needed. However, for member

First, static     each static A data member is an object associated with a class and is not associated with an object of that class ! The non-static data member exists in each object of the class type, and the static data member is

First, we define a class ctest, which contains three different forms of member functions, static member functions statfunc (), dynamic member functions dynfunc (), and virtual functions javasfunc (). In the main function, we use the cout standard

C ++ Primer study note _ 22 _ class and data abstraction (8) -- static member variable, static member function, class/object size, _ 22 -- static I. static Each static data member is an object associated with the class and is not associated with the

Code:1#include 2 3 using namespacestd;4 5 classa{6 Public:7 voidfunc1 () {8cout"func1"Endl;9 }Ten voidFunc1 ()Const{ Onecout"Const FUNC1"Endl; A } - voidFunc2 ()Const{ -cout"Const FUNC2"Endl; the }

The smart pointer behaves like a pointer, but does not provide added functionality. For example, Item 13 explains how to use the standard auto_ptr and tr1::shared_ptr pointers to automatically delete resources on the heap at the correct time.

Reference: http://www.weixueyuan.net/view/6372.htmlSummarize:In C + + through the virtual member function table vtable to achieve polymorphism, virtual function table is stored in the class virtual function of the entry address.Using polymorphism

A static member of a class is a love-hate trait. I decided to summarize the knowledge points of static class members so that I would not be passive on such issues in future interviews.Static class members include both static data members and static

You must add a class object before the member function pointer of a class is used.member function pointers for ordinary classes are established:return value (class name:: pointer name) (function parameter) =void (A::* PT) (Int,bool);Primary instance

Item 45: Use a member function template to accept all compatible types Item 45: Use member function templates to accept "all compatible types ". Item 13 mentioned that the smart pointer can be used to automatically release the memory in the heap.

If you try to use a member function of C + + directly as a callback function, an error occurs, and even compilation cannot pass. The error is that ordinary C + + member functions implicitly have a pass-through function as an argument, that is, the

When we talk about pointers, it is often assumed that it is something that can be represented by a void * pointer, which is 8 bytes in size under the x86_64 platform. For example, here is an excerpt from a Wikipedia article on x86_64:

//PointtoMemberFunction.cpp:Defines the entry point for the console application.//#include"stdafx.h"#includeusing namespacestd;classa{ Public: voidf () {cout"f ()"Endl; } Virtual voidg () {cout"g ()"Endl; } Static voidh () {cout"h ()"Endl; }

I think this is a bug in the VC compiler. The inclusion sequence of header files should not cause exceptions during runtime. The same problem exists in both vs2008 and vc6, but everything works normally in C-free (using the GCC compiler. The

Recently, function pointers have been used in development, so I want to sort out the concept of function pointers. O (distinct _ distinct) O ~ First, the function pointer is a pointer to a group of functions of the same type. We can also think

Seeing the const keyword, the first thing a C + + programmer might think of is a const constant. This is not a good reflex. If you only know to define constants with const, then it is equivalent to using gunpowder only to make firecrackers. The