void clear();

hasher hash_function() const;

reference operator[]( size_type pos );

std::pair<iterator,iterator> equal_range( const Key& key );

void assign( size_type count, const T& value );

(1)

iterator upper_bound( const Key& key ); (1)

size_type size() const;

iterator insert( const value_type& value ); (1)

key_equal key_eq() const;