flag_type flags() const;

constexpr sub_match();

difference_type length( size_type n = 0 ) const;

size_type size() const;

locale_type getloc() const;

locale_type imbue( locale_type loc );

Defined in header

bool operator==( const regex_token_iterator& other ) const;

explicit match_results( const Allocator& a = Allocator() );

template< class BidirIt, class CharT = typename std::i