C++ list 98 v. 11

// C++98
void erase_person (person *ptr) {
    std::list <person*>::iterator it;
    for (it = people.begin(); it != people.end(); ++it) {
        if (*it != ptr)
            continue;
        people.erase(it);
        break; // assume person is only linked once
    }
}

// C++11
void erase_person(const person& per)
{
    remove_if(people.begin(), people.end(), [](shared_ptr<person> cur_per) {
        return per == cur_per;
    });
}

// C++11 using O(log n) algo
void erase_person(const person& per)
{
    erase(find_if(people.begin(), people.end(), [](shared_ptr<person> cur_per) {
        return per == cur_per;
    }));
}