条款13 以对象管理资源

#include<iostream>
#include<string>
#include<memory>//智能指针
using namespace std;
class Resouce{
public:
Resouce(){
cout << "Resouce()" << endl;
}
~Resouce(){
cout << "~Resouce()" << endl;
}
void dosomething(){
cout << "dosomething" << endl;
}
};
class Base{
public:
void fun(){
auto_ptr<Resouce>raii(new Resouce);/*RAII 资源取得时机便是初始化时机*/
}
private:
};
class Derived :public Base{
public:
//..
Derived(){}

private:
int m_i;
};
void test(){
auto_ptr<Resouce>r1(new Resouce);
auto_ptr<Resouce>r2(new Resouce);
r2 = r1;
//r1->dosomething(); 转移语义 r1此时指向了空
shared_ptr<Resouce>r3(new Resouce);
shared_ptr<Resouce>r4(new Resouce);
r3 = r4;
r4->dosomething();//这样没有问题
//	auto_ptr<Resouce>r5(new Resouce[10]);
//	shared_ptr<Resouce>r6(new Resouce[10]);
//智能指针因为vector string的存在并没有针对于动态数组的设计，但是boost::scoped_array shared_array classes 有提供

}
int main(){
Base b;
b.fun();
test();
system("pause");
return 0;
}