The Leak of The Memory in C++ 1.2 - c++编程基础

The Leak of The Memory in C++ 1.2

Last time I showed a smart pointer has some side effect. This time
I'll 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
  
    p1(new Person);
 shared_ptr
   
     p2(new Person);

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

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

You can use this smart pointer in 99% situation without any
consideration.
This smart pointer is very, very important, every C++ programmer shoud
been known it as an 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 
  
   
#include 
   
     #include "Person.h" using namespace std; using namespace boost; int main(int,char**) { shared_ptr
    
      p1(new Person); shared_ptr
     
       p2(new Person); shared_ptr
      
        p3 = p2; p3 = p1; return 0; }