C++：如何执行泛型的深度克隆

#include<iostream>
#include<vector>
#include<memory>

template<typename T>
std::unique_ptr<T> deep_clone(const T& obj) {
    return std::make_unique<T>(obj);
}

template<typename T>
std::unique_ptr<std::vector<T>> deep_clone(const std::vector<T>& obj) {
    auto cloned_vector = std::make_unique<std::vector<T>>();
    for (const auto& item : obj) {
        cloned_vector->push_back(deep_clone(item));
    }
    return cloned_vector;
}

int main() {
    std::vector<std::vector<int>> original = {
        {1, 2, 3},
        {4, 5, 6},
        {7, 8, 9}
    };

    auto cloned = deep_clone(original);

    // 修改原始数据以验证深度克隆
    original[0][0] = 99;

    std::cout << "Original:"<< std::endl;
    for (const auto& row : original) {
        for (const auto& item : row) {
            std::cout<< item << " ";
        }
        std::cout<< std::endl;
    }

    std::cout << "Cloned:"<< std::endl;
    for (const auto& row : *cloned) {
        for (const auto& item : row) {
            std::cout<< item << " ";
        }
        std::cout<< std::endl;
    }

    return 0;
}