1、装饰模式
动态的给一个对象添加一些额外的职责;
侧重于功能的扩展：对其功能可以自由的增加或者减少;
2、具体实现
(1)、代码实现
#include<iostream>
using namespace std;
class Car{
public:
virtual void show() = 0;
private:
};
class RunCar : public Car{
public:
virtual void show(){
cout<<"可以跑"<<endl;
}
private:
};
class SwimCarDriver : public Car{
public:
SwimCarDriver(Car *car){
m_car = car;
}
virtual void show(){
m_car->show();
cout<<"可以游泳"<<endl;
}
private:
Car *m_car;
};
class FlyCarDriver : public Car{
public:
FlyCarDriver(Car *car){{
m_car = car;
}
virtual void show(){
m_car->show();
cout<<"可以飞"<<endl;
}
private:
Car *m_car;
};
//功能可以自由自在的组合,功能很强大!!!
int main(void){
Car *mycar = NULL;
mycar = new RunCar;
mycar->show();
cout<<"--------------------------------"<<endl;
FlyCarDriver *flycar = new FlyCarDriver(mycar);
flycar->show();
cout<<"--------------------------------"<<endl;
SwimCarDriver *swimcar = new SwimCarDriver(flycar);
swimcar->show();
return 0;
}
适配器是将2个不同的对象进行连接和组合！
将一个类的接口转换成客户希望的另外一个接口,
4、具体实现
(1)、代码如下
#include<iostream>
using namespace std;
class Current18{
public:
virtual void useCurrent18() = 0;
private:
};
class Current220{
public:
void useCurrent220(){
cout<<"我是220V,欢迎使用"<<endl;
}
private:
};
class Adapter : public Current18 { //适配器,要满足客户的需求;
public:
Adapter(Current220 *current){
m_current = current;
}
virtual void useCurrent18(){
cout<<"适配器 适配220V"<<endl;
m_current->useCurrent220();
}
private:
Current220 *m_current;
};
int main(void){
Current220 *current220 = new Current220;
Adapter *adapter = new Adapter(current220);
adapter->useCurrent18();
delete current220;
return 0;
}
(2)、运行结果
