本文主要是介绍原型模式,简化多次创建相同的内容，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
原型模式的定义：用原型实例指定创建对象的种类，并且通过拷贝这些原型创建新的对象。
UML图：
C++代码：
// author: Qinglong.mark.He
#include <iostream>
#include < string >
class Prototype
{
protected :
std:: string name;
public :
Prototype(){}
virtual ~Prototype(){}
virtual Prototype *clone(){ return nullptr;}
virtual void set ( char *n){}
virtual void show(){}
};
class PrototypeA: public Prototype
{
public :
PrototypeA(){
name = "PrototypeA";
}
PrototypeA( const PrototypeA &r){
name = r.name;
}
~PrototypeA(){
}
PrototypeA *clone(){
return new PrototypeA(* this );
}
void show(){
std::cout<<"PrototypeA name: "<<name<<std::endl;
}
};
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class PrototypeB: public Prototype
{
public :
PrototypeB(){
name = "PrototypeB";
}
PrototypeB( const PrototypeB &r){
name = r.name;
}
~PrototypeB(){
}
PrototypeB *clone(){
return new PrototypeB(* this );
}
void show(){
std::cout<<"PrototypeB name: "<<name<<std::endl;
}
};
测试用例：
int main(){
auto r1 = new PrototypeA;
auto r2 = new PrototypeB;
auto r3 = r1->clone();
auto r4 = r2->clone();
r1->show();
r2->show();
delete r1;
delete r2;
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r3->show();
r4->show();
delete r3;
delete r4;
return 0;
}
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