auto_ptr

http://en.wikipedia.org/wiki/Auto_ptr

 

auto_ptr은 smart pointer 기법가운데 하나이다. 인용하면

 

auto_ptr is a template class available in the C++ Standard Library(declared in )that provides some basic RAII features for C++ raw pointers.

 

The auto_ptr template class describes an object that stores a pointer to an allocated object of type Type* that ensures that the object to which it points gets destroyed automatically when control leaves a scope.

 

ex)

int *i = new int;
auto_ptr x(i);
auto_ptr y;
 
y = x;
 
cout << x.get() << endl;
cout << y.get() << endl;

 

This code will print a NULL address for the first auto_ptr object and some non-NULL address for the second, showing that the source object lost the reference during the assignment (=). The raw pointer i in the example should not be deleted, as it will be deleted by the auto_ptr that owns the reference.