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hw02 模板、迭代器 #74

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WAIXv wants to merge 2 commits into parallel101:main from WAIXv:main

WAIXv commented Oct 5, 2023

作业要求

避免函数参数不必要的拷贝 5 分
- print()和push_front()改为常量参数传递，避免拷贝
修复智能指针造成的问题 10 分
- shared_ptr循环引用造成内存无法释放
改用 unique_ptr<Node> 10 分
实现拷贝构造函数为深拷贝 15 分
- 使用迭代器遍历目标，开辟新内存并赋值
说明为什么可以删除拷贝赋值函数 5 分
- 编译器会自动创建一个纯右值，再用移动构造将所有权转给等号左边的变量，相当于调用了右值构造+移动赋值
改进 Node 的构造函数 5 分
- 声明为explicit，防止单参数隐式构造，初始列构造减少一次赋值

模板

List和Node类都实现为模板类，并用List<double>测试成功

迭代器

实现了list_iterator，拷贝构造时深拷贝的遍历操作使用迭代器完成

WAIXv added 2 commits

October 5, 2023 13:56


          add template, iterator support

16f26d5


          change to unique_ptr

5da7841

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