Detailed explanation of C++ function inheritance: How to use inheritance to implement pluggable architecture?

Function inheritance allows derived classes to override base class functions to avoid code duplication. Implementation method: Use the override keyword before derived class functions. Practical case: In the plug-in architecture, the plug-in class serves as the base class, and the derived class provides plug-in implementation. The plug-in is dynamically loaded and run through the PluginManager class.

C Detailed explanation of function inheritance: a powerful tool for pluggable architecture

Overview of function inheritance

Function inheritance allows you to inherit in derived classes Base class functions to avoid duplication of code. The functions of the derived class will override the functions of the base class, which means that the functions of the derived class will be called at runtime instead of the functions of the base class.

How to use function inheritance

To implement function inheritance, you need to use the override keyword in the class definition of the derived class to override the functions of the base class. For example:

class Base {
public:
    virtual void print() {
        std::cout << "Base class print" << std::endl;
    }
};

class Derived : public Base {
public:
    virtual void print() override {
        std::cout << "Derived class print" << std::endl;
    }
};

Practical case: pluggable architecture

Function inheritance is very useful when creating a pluggable architecture. In a pluggable architecture, you can load and unload different modules or components at runtime. This is useful when you need to dynamically change application functionality or provide customizable extensions.

The following is an example of using function inheritance to implement a pluggable architecture:

class Plugin {
public:
    virtual void init() = 0;
    virtual void run() = 0;
    virtual void terminate() = 0;
};

class PluginA : public Plugin {
public:
    void init() override {}
    void run() override { std::cout << "Plugin A is running" << std::endl; }
    void terminate() override {}
};

class PluginB : public Plugin {
public:
    void init() override {}
    void run() override { std::cout << "Plugin B is running" << std::endl; }
    void terminate() override {}
};

class PluginManager {
public:
    std::vector<std::unique_ptr<Plugin>> plugins;

    void loadPlugin(std::unique_ptr<Plugin> plugin) {
        plugins.push_back(std::move(plugin));
    }

    void runPlugins() {
        for (auto& plugin : plugins) {
            plugin->run();
        }
    }
};

In this example, the Plugin class acts as a base class and defines the interface of the plug-in ( init(), run(), terminate()). PluginA and PluginB are derived classes that provide the actual plug-in implementation. PluginManager The class is responsible for managing plug-ins and allows dynamic loading and running of plug-ins.

The above is the detailed content of Detailed explanation of C++ function inheritance: How to use inheritance to implement pluggable architecture?. For more information, please follow other related articles on the PHP Chinese website!