C中的新功能语法

我也从未真正使用智能指针. 8)

所以,我正在看看C中的新功能(使用VS 2013)

以下编译和工作正常：

vector<string> names;
names.push_back("tom");
names.push_back("dick");
names.push_back("harry");
names.push_back("bob");
names.push_back("percy");
names.push_back("freddie");
names.push_back("sam");

for (auto name : names)
{
    cout << "Name: " << name << endl;
}

以下不是：

vector<unique_ptr<Thing>> things;
things.push_back(unique_ptr<Thing>(new Thing("tom",23)));
things.push_back(unique_ptr<Thing>(new Thing("dick",26)));
things.push_back(unique_ptr<Thing>(new Thing("harry",33)));
things.push_back(unique_ptr<Thing>(new Thing("fred",43)));
things.push_back(unique_ptr<Thing>(new Thing("bob",53)));

for (auto thing : things)
{

}

我收到以下错误消息：

1>c:devsrcsamplesconsoletestconsoletestvectorstuff.cpp(34): error C2280: 'std::unique_ptr<Thing,std::default_delete<_Ty>>::unique_ptr(const std::unique_ptr<_Ty,std::default_delete<_Ty>> &)' : attempting to reference a deleted function
1>          with
1>          [
1>              _Ty=Thing
1>          ]
1>          c:program files (x86)microsoft visual studio 12.0vcincludememory(1486) : see declaration of 'std::unique_ptr<Thing,std::default_delete<_Ty>>::unique_ptr'
1>          with
1>          [
1>              _Ty=Thing
1>          ]

所以我尝试了标准迭代器：

for (auto thing = things.begin(); thing != things.end(); ++thing)
{
    cout << "Name: " << (*thing)->getName() << " age: " << (*thing)->getAge() << endl;
}

哪个编译好,那么为什么for(auto thing：things)语法不起作用？

这是我对Thing的定义：

class Thing
{
public:
    Thing();
    Thing(const Thing& original);
    Thing(const std::string& name,int age);

    const std::string& getName() const { return name; }
    int getAge() const { return age; }

private:
    std::string name;
    int age;
};

和代码：

Thing::Thing() : name(""),age(21)
{
}

Thing::Thing(const Thing& original) : name(original.name),age(original.age)
{
}

Thing::Thing(const std::string& name,int age) : 
    name(name),age(age)
{
}

我添加了默认构造函数和复制构造函数,但仍然获取了已删除的函数.