#include <iostream>
#include <boost/signal.hpp>
#include <boost/ref.hpp>

using namespace std;
using namespace boost;

struct Hello {
    Hello () { cout << "Hello::Hello () @ " << this << endl; }
    Hello (const Hello&) {
        cout << "Hello::Hello (const ref) @ " << this << endl;
    }
    ~Hello () { cout << "Hello::~Hello @ " << this << endl; }
    Hello& operator= (const Hello&) const {
        cout << "Hello::operator= @ " << this << endl;
    }
    void operator () (int i) { cout << "i = " << i << endl; }
};

void
copytest ()
{
    cout << "copy test:\n";

    Hello hello;
    boost::signal<void (int)> sig;
    sig.connect (hello);
    sig (1968);
}

void
reftest ()
{
    cout << "ref test:\n";

    Hello hello;
    boost::signal<void (int)> sig;
    sig.connect (ref (hello));
    sig (1968);
}

int
main ()
{
    copytest ();
    reftest ();
}