31 Regular expressions library [re]

31.12 Regular expression iterators [re.iter]

31.12.1 Class template regex_­iterator [re.regiter]

31.12.1.1 regex_­iterator constructors [re.regiter.cnstr]

regex_iterator();
Effects: Constructs an end-of-sequence iterator.
regex_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re, regex_constants::match_flag_type m = regex_constants::match_default);
Effects: Initializes begin and end to a and b, respectively, sets pregex to &re, sets flags to m, then calls regex_­search(begin, end, match, *pregex, flags).
If this call returns false the constructor sets *this to the end-of-sequence iterator.