apex base

Modern mobile communication tends to provide high-speed transmission multimedia services. The birth of LTE family base stations effectively improves the coverage, throughput, and transmission experience of the system in hot areas. In the standardization process of LTE, the concept and technology of a family base station HomeeNodeB and HeNB came into being. Unlike traditional cell communication

The example in this article explains the transformations between the base class and the derived class in C + +. It will help to understand the object-oriented programming of C + +. Note here: The premise of this example is that the derived class inherits the base class in the form of public inheritance, with the keyword publicly. The specific analysis is as follows: The following procedure explains the exa

Like the this keyword, It is abbreviated or replaced as an instance of the class (so it cannot call static and abstract members of the base class, however, this keyword is used to replace the instance of this class. The base keyword is used to replace the instance of the base class. Its usage is very simple. The form of accessing the

Analysis of false Communication Base Station Information Interception 0 × 01 current network simulation base station usage and impact analysis With the development of mobile communication technology, base stations of various mobile communication systems are more and more established, which may cause mutual interference, resulting in a decline in link quality and

C + + notes: Derived classes to base class conversions to accessibility to determine whether a conversion to a base class is accessible, you can consider whether the public member of the base class is accessible and, if so, that the conversion is inaccessible, otherwise it can be accessed. If it is public inheritance, both user code and descendant classes can

Where to use the virtual base class:Why avoid ambiguity caused by multiple public base classes in multi-layer inheritanceVirtual base class UsageWhen a derived class inherits a base class, the virtual base class is inherited by the addition of an Vsan keyword.In the program

/** This keyword* This keyword references the current instance of the class* Note: The This keyword cannot be used in static member methods, and the This keyword can only be used in instance constructors, instance methods, or instance accessors*//** Base keyword* The base keyword is used to access the members of the base class from the derived class;* Specifies t

Object-Oriented Programming-Overview, definition of base classes and derived classes Introduction: Object-Oriented programming is based on three basic concepts: data abstraction, inheritance, and dynamic binding. In C ++,Data abstraction using classesTo inherit from one class:The derived class inherits the members of the base class.. Dynamic binding enables the compilerAt runtime, it is determined whether

The New keyword has aroused a lot of attention, especially thanks to Anders Liu's supplement, let me feel that the communication platform given by the blog Park is really ubiquitous. So, we need to continue this topic, to carry out the key words that I think are most worthy of attention, this article is focused on the Access keyword (Access Keywords): base and this. Although access to the keyword is not difficult to understand the topic, we still have

inheritance:Class Derived classes: Virtual base class 1,virtual base class 2, Virtual base class 3 ...{};Constructor procedure:The constructor of the virtual base class is executed first, and the constructors of many virtual base classes are constructed in the order of inhe

The derived class inherits the base class. During memory allocation, it is located in different memory addresses of the base class object. Based on the member variable type of the base class, a space of the same type is opened, but note that the space of the derived object after the development is opened, instead of copying the value of the

C # base and this -- From Rocky Ren 2. Basic Concepts Base and this are attributed to access keywords in C #. As the name suggests, they are used to implement access operations of the Inheritance Mechanism to satisfy access to object members, this provides a more flexible processing method for the polymorphism mechanism. 2.1 base keywords It is used to implement

information into the log every time a message is sent. Using a derived class (derived class), you can simply add this function. The following seems a reasonable method:template class LoggingMsgSender: public MsgSender { public: 　... // ctors, dtor, etc. 　void sendClearMsg(const MsgInfo info) 　{ 　　write "before sending" info to the log; 　　sendClear(info); // call base class function; 　　// this code will not co

Oracle Execution Plan (3)-join base of two tables 1 formula: Base join selection rate * filter condition 1 base + filter condition 2 base join selection rate (num_rows (Table 1) -num_nulls (Table 1 connection field) num_rows (table 1) * (num_rows (table 2)-num_nulls (Table 2 connection field) num_rows (table 2 )) Oracl

Premise:1: Each destructor clears only its own members (the member function has no virtual).2: A pointer to a derived class may be the object of the base class, and when the destructor of a base class pointer to a member of a derived class is not known, the program may cause memory leakage, so the destructor of the base class is defined as a virtual function;A

C + + clearly states: when the derived class object is deleted by a base class pointer, and the base class takes a non-virtual destructor, the result is undefined-- The actual execution usually occurs when the derived component of the object is not destroyed! (Note: Using polymorphism in the way that a base class references a derived class, because a reference is

Transferred from: http://www.cnblogs.com/sujz/articles/2044365.htmlThe inheritance of derived classes is summarized as follows: How to Inherit Description Public The public and protected members of the base class are inherited by the derived class, preserving the original state Private Public and protected members of the base class are inherited b

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 methods for timing. Because there are many timing methods, it is worthwhile to do so: Class timekeeper { Public: Timekeeper (); ~ Timekeeper (); ... }; Class atom

In Oo, the base class has two methods at most. The first method is interface, that is, the base class is abstract class. The most typical example is factory design pattern. the second approach is to provide a mechanism for base class, and then provide several virtual functions, allowing users to overload this class to achieve the purpose of "Customization. A typi

Required Attributes Yii\base\application::id Distinguishing unique ID IDs for other apps Yii\base\application::basepath the app's root directory Other properties Yii\base\application::aliases defines multiple aliases, usually a convenient path, namespace access. YII\BASE\APPLICATION::BOOTST