迭代器失效
先看一段代码
#include <iostream>
#include <vector>
#include <set>
int main() {
int cnt = 0;
std::set<int> s{1,4};
std::vector<int> vec{0,1,2,3,4,5,6,7,8,9};
for (auto iter = vec.begin(); iter != vec.end();) {
std::cout << "iter: " << *iter << std::endl;
if (s.count(*iter)) {
vec.erase(iter++);
std::cout << "now: " << *iter << std::endl;
} else {
++iter;
}
}
for (auto &it : vec) {
std::cout << it << std::endl;
}
}
