size_type size() const;

iterator erase( const_iterator pos ); (1)

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

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

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

template< class T, class Container > void

void swap( unordered_set& other );

void splice_after( const_iterator pos, forward_list& other );

template< class T, class Alloc > void swap( forward_list<T

template< class Key, class T, class Compare