c++ - 迭代器是否失效？

Question

迭代器是否在以下时间后失效:

string b "Some string";
auto beg_ = b.begin();
auto end_ = b.end();
b.erase(beg_);

Answer 1

是的，但是 erase 会返回一个有效的迭代器，您可以使用它来继续循环:

For the remaining members, the function returns an iterator of member type string::iterator referring to the character that now occupies the position of the first character erased, or, if no such character exists, returns end().

来源:http://www.cplusplus.com/reference/string/string/erase/