该循环在运行时更改迭代器：
- std::vector<int> c;
- c.push_back(1);
- c.push_back(2);
- std::vector<int>::iterator iter = c.begin();
- std::vector<int>::iterator endIter = c.end();
- while( iter != endIter )
- {
- std::cout << (*iter) << std::endl;
- iter = c.erase(iter);
- }
它不工作,因为：
Iterators and references to the erased elements and to the elements between them and the end of the container are invalidated. Past-the-end iterator is also invalidated
如何重写(不使用std :: list,并使用while循环)？
顺便说一句,我知道汽车从C11开始实施了.为什么使用它是有益的？
解决方法
只是不缓存将无效的结束迭代器：
- while( iter != c.end() )
- {
- std::cout << (*iter) << std::endl;
- iter = c.erase(iter);
- }
或打印后清除矢量：
- for(const auto& i : c) {
- std::cout << i << std::endl;
- }
- c.clear();
