locale_type getloc() const;

difference_type length() const;

locale_type imbue( locale_type loc );

void swap( basic_regex& other );

Defined in header

void swap( match_results& other );

difference_type position( size_type n = 0 ) const;

Defined in header

bool isctype( CharT c, char_class_type f ) const;

size_type size() const;