friend class

To discuss the difference between the structure (struct) and Class (class), what do you think the structure (struct) has to do with the class instead? --------------------------------------------------------------- Ask too many people, simply tidy

This article focuses on how to develop caching functions that run in the iOS environment through C + + in Xcode. The algorithm is based on LRU (least recently used). For LRU details, please

2012.9.16 Rui Sheng Written test:1. Macro definition: Ask how many seconds a year.#define (365*24*60*60) ULIs that the UL special attention, at that time forgot to write 2. Write out the three examples of volatile Precisely, the optimizer must

In order to solve the program because of resources, there is a scramble for resources, and the resulting program into the waiting state (deadlock). To address this problem: We can add a "lock" to the resource, determine the status of the current

Friends can be divided into three kinds: 1. Friend function; 2. Friend class; 3. Friend member function; The benefit of friends, by using the friend function, you can give the function the same access as the class member function, which is a

Mediator (mediator) mode (mediator) defines an object that encapsulates how a series of objects interact so that objects do not need to be explicitly referenced to each other, which makes them more loosely coupled, and allows us to change the

'==================================================================== ' Tracespy-to write custom debug information in a record file (developer: Lin Jian) '==================================================================== ' Property '

Asp.net| Create | server | Process Product Introduction Have you ever seen a good coffee shop clerk send coffee? It's just coffee beans, steam and milk and coffee drinks in the dance of the wonderful ballet, jumping to the anxious waiting customers.

The user can use a new keyword "inherts" to build a new class based on a basic class, the inheriting class can inherit, extend the properties, methods, events, data members, and event handlers of the base class.VB.net introduces the following

Recently see the code useful to QT in the Q_d pointer, went to learn the next, found really useful, so write an article summarized under. Student.h class cstudent {public : cstudent (); ~cstudent (); Private: string m_name; int m_age; int

1.ORMORM, Object Relational Mapping, is used to map object-based data structures to the SQL structure. The object-based data is mapped to fields in the relational table, and then we can manipulate the database through the interface provided by the

C + + provides a number of powerful mechanisms to achieve high code reuse, so that we can use our own classes as quickly and easily as with built-in types. such as templates, operator overloading, and so on. Templates such as a large production of

Before using C to implement the universal linked list, the data domain of the linked list from the specific type to the void* pointer, the use of C to achieve the strength is the pointer assignment and also to achieve universal printing Link: c

In this bidirectional circular list, the header node first does not have an element, and when the bidirectional loop list is empty:first->rlink=first->llink=first;The following code realizes the insertion and deletion of the bidirectional circular

Friend function1, why do you want to introduce friend function?Reduce system overhead and increase efficiency when data sharing between classes is implementedSpecifically, in order for the member functions of other classes to access the private

1, in the "C + + meditation" proxy class, the use of proxy classes, there are problems:A, agent replication, each time you create a copy, the cost is likely to be largeb, some objects can not easily create a copy, such as file2, how to solve this

Encapsulation):Encapsulation is to combine abstract data with behaviors or functions to form an organic whole, that is, to organically combine data with the source code of operational data to form a "class ", data and functions are members of the

Recently, I made ActiveX plug-ins to get started with a series of articles titled "Development of ActiveX controls based on MFC" by a cool man on the Internet. However, his article mainly introduces development in the framework provided by ActiveX

One, general overview1, the author discussesSpeaking of "façade" This design mode in fact, regardless of the new and old program apes are inadvertently applied to this mode, like our beautiful JS programmer inadvertently used the closure processing

1. C + + class declaration:Class Class_name{Private/** Private data and member functions* Can only be referenced by member functions in this class, cannot be called outside the class* Friend class exception*/Public/** Public data and member