template< class Key, class T, class Compare, class Alloc > bool operator==(

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

local_iterator end( size_type n );

void pop_front();

template< class... Args > void emplace( Args&&... args

void reserve( size_type count );

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

template <class... Args> pair<iterator, bool> try_emplace(const

size_type max_size() const;

float max_load_factor() const; (1)