#include <iostream>
#include <utility>
#include <vector>
#include <string>
int main()
{std::string str = "Hello";std::vector<std::string> v;// uses the push_back(const T&) overload, which means // we'll incur the cost of copying str
    v.push_back(str);std::cout << "After copy, str is \"" << str << "\"\n";// uses the rvalue reference push_back(T&&) overload, // which means no strings will copied; instead, the contents// of str will be moved into the vector.  This is less// expensive, but also means str might now be empty.
    v.push_back(std::move(str));std::cout << "After move, str is \"" << str << "\"\n";std::cout << "The contents of the vector are \"" << v[0]<< "\", \"" << v[1] << "\"\n";
}

After copy, str is "Hello"
After move, str is ""
The contents of the vector are "Hello", "Hello"

// TEMPLATE FUNCTION movetemplate<class _Ty> inlinetypename tr1::_Remove_reference<_Ty>::_Type&&move(_Ty&& _Arg){    // forward _Arg as movablereturn ((typename tr1::_Remove_reference<_Ty>::_Type&&)_Arg);}

        basic_string(_Myt&& _Right): _Mybase(_STD forward<_Alloc>(_Right._Alval)){    // construct by moving _Right
        _Tidy();assign(_STD forward<_Myt>(_Right));}
_Myt& assign(_Myt&& _Right){    // assign by moving _Rightif (this == &_Right);else if (get_allocator() != _Right.get_allocator()&& this->_BUF_SIZE <= _Right._Myres)*this = _Right;else{    // not same, clear this and steal from _Right_Tidy(true);if (_Right._Myres < this->_BUF_SIZE)_Traits::move(this->_Bx._Buf, _Right._Bx._Buf,_Right._Mysize + 1);else{    // copy pointerthis->_Bx._Ptr = _Right._Bx._Ptr;_Right._Bx._Ptr = 0;}this->_Mysize = _Right._Mysize;this->_Myres = _Right._Myres;_Right._Tidy();}return (*this);}

#include <iostream>
#include <utility>
#include <vector>
#include <string>using namespace std;class MyPoint{
public:MyPoint():comment(""), x(0), y(0){}MyPoint(const MyPoint& p):comment(p.comment),x(p.x),y(p.y) {}    //MyPoint(MyPoint&& p)//    :comment(move(p.comment)), x(p.x), y(p.y)//{//    p.x = 0;//    p.y = 0;//}string toString(){char buf[100];sprintf(buf, "%s: %d %d", comment.c_str(), x, y);return buf;}string comment;int x;int y;};int main()
{MyPoint p;p.comment = "First point";p.x = 9;p.y = 7;vector<MyPoint> v;v.push_back(p);cout << "After copy, str is \"" << p.toString() << "\"\n";v.push_back(move(p));cout << "After move, str is \"" << p.toString() << "\"\n";cout << "The contents of the vector are \"" << v[0].toString()<< "\", \"" << v[1].toString() << "\"\n";cin.get();
}

After copy, str is "First point： 9 7"
After move, str is "First point： 9 7"
The contents of the vector are "First point： 9 7", "First point： 9 7"

After copy, str is "First point： 9 7"
After move, str is "： 0 0"
The contents of the vector are "First point： 9 7", "First point： 9 7"