test rvalue related behaviors of C++11

rvalue.cpp

#include <iostream>

using namespace std;

class Foo
{
public:
    Foo() { cout << "Foo::ctor" << endl; }
    Foo(Foo &foo) { cout << "Foo:copy" << endl; }
    ~Foo(){ cout << "Foo::dtor" << endl; }
};

class A
{
public:
    Foo *pf;
    A() { cout << "A::ctor" << endl; pf = new Foo(); }
    A(A &&a) { cout << "A::moveCto" << endl; pf = a.pf; a.pf = NULL; }
    // A(A const &a) { cout << "A::copy" << endl; pf = new Foo(*(a.pf)); }
    A &operator =(A &&a) { cout << "A::moveOp=" << endl; Foo *pfTemp = pf; pf = a.pf; a.pf = pfTemp; return *this;}
    ~A(){ cout << "A::dtor" << endl; delete pf; }
};

A func()
{
    A a;
    return a;
}

int main()
{
    // A b = func();
    // A a(func());
    
    // A b;
    // A a(move(b));
    // printf("%p\n", b.pf);

    A a, b;
    a = move(b);
}