对象的移动！

对象的移动

int  main()
{
	String s1("One"), s2("Two");
	cout << s1 << " " << s2 << endl << endl;
	String s3(s2);
	cout << s1 << " " << s2 << " " << s3 << " " << endl << endl;
	s3 = s2;
	cout << s1 << " " << s2 << " " << s3 << " " << endl << endl;
	s3 = String("Three");
	std::vector<String> vs;
	cout << "kaishi cheshi " << endl;
	vs.push_back(s1);
	cout << "push_back number 2 " << endl;
	vs.push_back(std::move(s2));
	cout << "push_back number 3" << endl;
	vs.push_back(String("Three"));
	cout << "push_back number4" << endl;
	vs.push_back("Four");

	for_each(vs.begin(), vs.end(), [](String &s) {cout << s << endl; });
	
	system("pause");
    return 0;
}