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

hasher hash_function() const;

bool empty() const;

iterator end();

reverse_iterator rbegin();

reference at( size_type pos );

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

void clear();

template< class... Args > iterator emplace( const_iterator

iterator erase( const_iterator pos ); (1)