unordered_set

template<typename T> class unordered_set{
    //default constructor
    unordered_set();
    //copy constructor
    unordered_set(unordered_set &in other);
    //operator=
    unordered_set& opAssign(unordered_set &in other);
    
    void SetDirectcomp(bool yesno);
    
    int size();
    void clear();
    bool empty();
    
    void insert(T &in value);
    void erase(T &in value);
    bool contains(T &in value);
    
    unordered_set_iterator<T> begin();
    unordered_set_iterator<T> end();
    
    bool erase(const unordered_set_iterator<T> &in iterator);
    int erase(const unordered_set_iterator<T> &in iterator_range_begin, const unordered_set_iterator<T> &in iterator_range_end);
    
    //find that returns an iterator, returns end if not found
    unordered_set_iterator<T> find_iterator(const T &in value);
};