The Leak of The Memory in C++ 1.2

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本文详细介绍了C++11中shared_ptr的使用方法，包括如何初始化、赋值以及在不同情况下的应用。shared_ptr作为现代C++中管理内存资源的强大工具，对于每个程序员来说都是必备的知识。

The Leak of The Memory in C++ 1.2

   Last time I showed a smart pointer has some side effect. This time
I'll show you another smart pointer which is much better. Now our hero will show
his ability.
   The shared_ptr, this smart pointer looks like a raw pointer when
people use it. Which introduced by boost - one of most inportant c++ libraries. We can
use this smart pointer like the last smart pointer which I already introduced.
Just like this.

 shared_ptr<Person> p1(new Person);
 shared_ptr<Person> p2(new Person);

And you can assign value to them, just like this.

    shared_ptr<Person> p1(new Person);
    shared_ptr<Person> p2 = p1;
    shared_ptr<Person> p3(new Person);
    p3 = p1;

   You can use this smart pointer in 99% situation without any
consideration.
   This smart pointer is very, very important, it should been konwn by every C++ programmer as int type..
   And this smart pointer already is part of C++11, means you can use it
any where any time. The demo code is below:

appMain.h

#include <iostream>
#include <boost/shared_ptr.hpp>
#include "Person.h"

using namespace std;
using namespace boost;

int main(int,char**)
{
    shared_ptr<Person> p1(new Person);
    shared_ptr<Person> p2(new Person);
    shared_ptr<Person> p3 = p2;
    p3 = p1;
    return 0;

}