struct ceshi
{
    int frist = 0;
    int second = 0;
};

int main(int argc, char *argv[])
{
    QList<ceshi> list;
    ceshi c1;
    c1.frist = 1;
    c1.second = 2;
    ceshi c2;
    c2.frist = 3;
    c2.second = 4;
    list << c1 << c2;

    std::list<ceshi> list2;
    list2.resize(list.size());

    auto ret = std::copy(std::begin(list),std::end(list),std::begin(list2));
    for (auto it = list2.begin();it != list2.end();++it)
    {
        qDebug()<<it->frist<<it->second;
    }
}

其中：

    list2.resize(list.size());

将两个容器的大小设为相同是必不可少的一步。

    auto ret = std::copy(std::begin(list),std::end(list),std::begin(list2));

迭代器（指针）ret指向拷贝list2的尾元素之后的位置。

    auto ret = std::copy(std::begin(list),std::end(list),std::begin(list2));
    --ret;
    qDebug()<<ret->frist<<ret->second;