Code RoomIterator invalidated during erase
MediumPrep Room Coding #2002

Iterator invalidated during erase

Code reviewCode quality & reviewMid–Senior~18 min

Review this C++ code that removes expired sessions from a vector.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.

0:00 of about 18 min
Mark a line and say what kind of problem it is.0 findings
1for (auto it = sessions.begin(); it != sessions.end(); ++it) {
2 if (it->expired()) {
3 sessions.erase(it); // drop this one
4 }
5}
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.