template< class Key, class Compare, class Alloc

allocator_type get_allocator() const;

Defined in header

Defined in header

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

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

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

Defined in header

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

template< class T, class Container, class Alloc > struct us