void push_front( const T& value );

template< class... Args > void emplace_front( Args&&

size_type size() const;

size_type size() const;

void pop_front();

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

void clear();

size_type max_size() const;

allocator_type get_allocator() const;

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