Re: boost:shared_ptr cast problem

From:
Jun <junhufr@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Sun, 25 Nov 2007 13:57:47 -0800 (PST)
Message-ID:
<765be9e1-810b-4b94-9a70-1de97b46d0bc@a39g2000pre.googlegroups.com>
On Nov 25, 10:12 pm, Jun <junh...@gmail.com> wrote:

Hello,

I've code like :
===========================================
class A{
            public :
                     // create print content
                     friend std::ostream& operator<< (std::ostream&
os, const A& a);

}

typedef boost::shared_ptr<A> APtr; // Define A class smart pointer

APtr aPtr1(new A());
APtr aPtr2(new A());
APtr aPtr3(new A());

vector<APtr> AVec;
AVec.push_back(aPtr1);
AVec.push_back(aPtr2);
AVec.push_back(aPtr3);

std::copy(AVec.begin(),AVec.end(),
std::ostream_iterator<APtr>(std::cout, "\n"));

std::copy(AVec.begin(),AVec.end(), std::ostream_iterator< share_ptr<A>>(std::cout, "\n"));

===========================================

The two copy methods only output the address of pointers, they could
just print the class A defined print contents. And following code
works :
===========================================
vector<APtr>::iterator i = AVec.begin();
                for(; i!= AVec.end(); ++i){
                        cout << *static_cast<APtr>(*i) << endl;
                }
===========================================

Anyone has some ideas for that ? Thank you in advance.

Jun


Actually, It's boost::shared_ptr serialization problem.

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