Erasing elements in a multimap while iterating

Question

I\'m writing a nodal path finding algorithm. I need to run through a multimap and delete elements out of it under certain conditions, but keep iterating through the multimap

Answer 1

Won't this be better?

std::multimap m;
typedef std::multimap::iterator Iter;¸

for (Iter it = m.begin(); it != m.end(); ) {
    if ( /* some condition */ ) {
        Iter save = it;
        ++it;
        m.erase(save);
    } else
       ++it;
}