1. The first and most important article is to introduce it: hide . (static function, static variable all available)When multiple files are compiled at the same time, all global variables and functions that do not have a static prefix have global
I. What is a static class memberAccess to a global object is sometimes necessary for all objects of a particular class type. The global object then destroys encapsulation: the object needs to support the implementation of a particular class
---Store of knowledge pointsIn C + +, memory is divided into 5 extents, namely heap, stack, free storage, global/static storage, and constant storage.Stacks are stores of variables that are allocated by the compiler when needed, and that are
Summary of static keyword function in C + +1. The first and most important article is to introduce it: hide. (static function, static variable all available)When multiple files are compiled at the same time, all global variables and functions that
4 ways to allocate memory in C + +: heap, stack, free storage, global/static storage, and constant storageStacks , which are the stores of variables that are allocated by the compiler when needed, and automatically purged when not needed. The
When a function is not part of a specific instance and belongs to the entire class, then this function is best written as a static member function, so that it can be called directly with the class nameClass::func ()For general member functions when
First, C + + polymorphism : The ability of the system to determine which overloaded member function to invoke, based on the object type at run time.Polymorphism is achieved through virtual functions . A virtual function is added before the member
The comparison function in sort compare to be declared as a static member function or a global function, not as a normal member function, or an error will be made. Because a non-static member function is dependent on a specific object, and the
Http://www.cnblogs.com/fly1988happy/archive/2012/09/25/2701237.html1. polymorphicIn object-oriented languages, many different implementations of interfaces are polymorphic. Polymorphism refers to an instance (object) of a child class with a pointer
Objective
C + + member functions are divided into static functions, non-static functions and virtual functions three kinds, in this series of articles, many mentions static and non-static does not affect the memory occupied by objects, and virtual
Programmer Sutra Pavilion---C + + programming Bingshu
static member class: Easy to be shared by all objects of class;
static data member static int A: Creates and initializes a-------------only once the program starts executing (contrast: non-static
relationships between classes and objects
The relationship between a class and an object is like a design diagram and a house relationship--Class 10 constructs the object's "design" of the class. Just as a design can make a lot of houses, but it is
We can modify the member function of a class with static, or you can use the const to decorate a member function of a class (written at the end of the function to indicate that the member variable cannot be modified, not the one that represents the
problems with the C + + static functionRecently read C + + primer in the static chapter, there is such a sentence,"The declaration of a static member function, in addition to the function declaration in the class body, is preceded by a keyword
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:
Reprinted from 52725595The role of static in the C language is as followsfirst , when modifying a variable, static local variables are executed only once, and the life cycle of the local variable is extended, until the end of the program runs.
There is such a class that we base on this class:1 classFoo2 {3 Public:4 5 //void (Foo::*) (int)6 voidFoointa)7 {8cout Endl;9 }Ten One //Void (*) (int) A Static voidBarinta) - { -cout Endl; the } -};We try to invoke
Static members in a class include static member functions and static member data in two partsFirst, static data membersThe declaration of a data member in the class body is preceded by the static keyword, which becomes a data member of that class.
Starting from this section, in addition to using the memory of the information printing to explore, more by tracking and observing the compiler generated by the assembly code to understand the compiler's implementation of these language features.
in C + +, there are two kinds of member variables: static and non-static, with three member functions: static, non-static, and virtual. So how do they affect the distribution of C + + objects in memory? When there is inheritance, what about its
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