template <class BidirectionalIterator, class Allocator, class charT, class traits>
bool regex_match(BidirectionalIterator first, BidirectionalIterator last,
match_results<BidirectionalIterator, Allocator>& m,
const basic_regex<charT, traits>& e,
regex_constants::match_flag_type flags =
regex_constants::match_default);
Requires: The type BidirectionalIterator shall satisfy the requirements of a Bidirectional Iterator ([bidirectional.iterators]).
Effects: Determines whether there is a match between the regular expression e, and all of the character sequence [first,last). The parameter flags is used to control how the expression is matched against the character sequence. Returns true if such a match exists, false otherwise.
Postconditions: m.ready() == true in all cases. If the function returns false, then the effect on parameter m is unspecified except that m.size() returns 0 and m.empty() returns true. Otherwise the effects on parameter m are given in Table [tab:re:alg:match].
| Element | Value |
| m.size() | 1 + e.mark_count() |
| m.empty() | false |
| m.prefix().first | first |
| m.prefix().second | first |
| m.prefix().matched | false |
| m.suffix().first | last |
| m.suffix().second | last |
| m.suffix().matched | false |
| m[0].first | first |
| m[0].second | last |
| m[0].matched | true |
| m[n].first | For all integers 0 < n < m.size(), the start of the sequence that matched sub-expression n. Alternatively, if sub-expression n did not participate in the match, then last. |
| m[n].second | For all integers 0 < n < m.size(), the end of the sequence that matched sub-expression n. Alternatively, if sub-expression n did not participate in the match, then last. |
| m[n].matched | For all integers 0 < n < m.size(), true if sub-expression n participated in the match, false otherwise. |
template <class BidirectionalIterator, class charT, class traits>
bool regex_match(BidirectionalIterator first, BidirectionalIterator last,
const basic_regex<charT, traits>& e,
regex_constants::match_flag_type flags =
regex_constants::match_default);
Effects: Behaves “as if” by constructing an instance of match_results<BidirectionalIterator> what, and then returning the result of regex_match(first, last, what, e, flags).
template <class charT, class Allocator, class traits>
bool regex_match(const charT* str,
match_results<const charT*, Allocator>& m,
const basic_regex<charT, traits>& e,
regex_constants::match_flag_type flags =
regex_constants::match_default);
Returns: regex_match(str, str + char_traits<charT>::length(str), m, e, flags).
template <class ST, class SA, class Allocator, class charT, class traits>
bool regex_match(const basic_string<charT, ST, SA>& s,
match_results<
typename basic_string<charT, ST, SA>::const_iterator,
Allocator>& m,
const basic_regex<charT, traits>& e,
regex_constants::match_flag_type flags =
regex_constants::match_default);
Returns: regex_match(s.begin(), s.end(), m, e, flags).
template <class charT, class traits>
bool regex_match(const charT* str,
const basic_regex<charT, traits>& e,
regex_constants::match_flag_type flags =
regex_constants::match_default);
Returns: regex_match(str, str + char_traits<charT>::length(str), e, flags)
template <class ST, class SA, class charT, class traits>
bool regex_match(const basic_string<charT, ST, SA>& s,
const basic_regex<charT, traits>& e,
regex_constants::match_flag_type flags =
regex_constants::match_default);
Returns: regex_match(s.begin(), s.end(), e, flags).