阅读背景:

Is move constructor called twice in C++?

来源:互联网 

Look at this code:

看看这段代码:

class Foo
{
public:

    string name;

    Foo(string n) : name{n}
    {
        cout << "CTOR (" << name << ")" << endl;
    }

    Foo(Foo&& moved)
    {
        cout << "MOVE CTOR (moving " << moved.name << " into -> " << name << ")" << endl;

        name = moved.name + " ###";
    }

    ~Foo()
    {
        cout << "DTOR of " << name << endl;
    }
};

Foo f()
{
    return Foo("Hello");
}

int main()
{
    Foo myObject = f();

    cout << endl << endl;
    cout << "NOW myObject IS EQUAL TO: " << myObject.name;
    cout << endl << endl;

    return 0;
}
class Foo
{
publ



你的当前访问异常,请进行认证后继续阅读剩余内容。

分享到: