I think I know the answer to this, but I’d appreciate a sanity check.

I’m trying to understand std::back_inserter and std::back_insert_iterator, and I read this Stack overflow question and the answers. As far as I understand, the answers say the operator *, ++, ++( int ) exist for a reason. But if I understand correctly, the code in that question does nothing regarding operators *,++,++(int). Also, cppreference.com says that the operators *, ++, ++( int ) are no-op.

The closest thing I came to find as a valid reason for IEnumerator<out T> extending IDisposable is from this answer that echoes work done by Jon Skeet – like this:

I was reading the cppreference documentation on vectors erase method. The documentation used the general syntax: it = v.erase(it); to remove the element it was pointing to and then increment it to the next element in the vector.