#include<string>
#include<iostream>
#include<boost/scoped_ptr.hpp>

class implementation
{
public:
????~implementation() { std::cout <<"destroying implementation\n"; }
????void do_something() { std::cout << "did something\n"; }
};

void test()
{
????boost::scoped_ptr<implementation> impl(new implementation());
????impl->do_something();
}

void main()
{
????std::cout<<"Test Begin ... \n";
????test();
????std::cout<<"Test End.\n";
}

Test Begin ...
did something
destroying implementation
Test End.

namespace boost {

????template<typename T> class scoped_ptr : noncopyable {
????public:
????????explicit scoped_ptr(T* p = 0);
????????~scoped_ptr();

????????void reset(T* p = 0);

????????T& operator*() const;
????????T* operator->() const;
????????T* get() const;

????????void swap(scoped_ptr& b);
????};

????template<typename T>
????void swap(scoped_ptr<T> & a, scoped_ptr<T> & b);
}

成員函數(shù)

功能

operator*()

以引用的形式訪問所管理的對(duì)象的成員

operator->()

以指針的形式訪問所管理的對(duì)象的成員

get()

釋放所管理的對(duì)象，管理另外一個(gè)對(duì)象

swap(scoped_ptr& b)

交換兩個(gè)boost::scoped_ptr管理的對(duì)象

#include<string>
#include<iostream>

#include<boost/scoped_ptr.hpp>
#include<boost/scoped_array.hpp>

#include<boost/config.hpp>
#include<boost/detail/lightweight_test.hpp>

void test()
{
????// test scoped_ptr with a built-in type
????long * lp = newlong;
????boost::scoped_ptr<long> sp ( lp );
????BOOST_TEST( sp.get() == lp );
????BOOST_TEST( lp == sp.get() );
????BOOST_TEST( &*sp == lp );

????*sp = 1234568901L;
????BOOST_TEST( *sp == 1234568901L );
????BOOST_TEST( *lp == 1234568901L );

????long * lp2 = newlong;
????boost::scoped_ptr<long> sp2 ( lp2 );

????sp.swap(sp2);
????BOOST_TEST( sp.get() == lp2 );
????BOOST_TEST( sp2.get() == lp );

????sp.reset(NULL);
????BOOST_TEST( sp.get() == NULL );

}

void main()
{
????test();
}