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

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

(1)

size_type bucket_size( size_type n ) const;

size_type max_size() const;

size_type bucket_size( size_type n ) const;

size_type count( const Key& key ) const; (1)

void fill( const T& value );

size_type size() const;

reference front();