std::match_results<BidirIt,Alloc>:: size
|
size_type size
(
)
const
noexcept
;
|
(since C++11) | |
Returns the number of submatches, i.e. std:: distance ( begin ( ) , end ( ) ) .
Returns 0 if * this does not represent the result of a successful match.
Parameters
(none)
Return value
The number of submatches.
Complexity
Constant.
Example
#include <iostream> #include <regex> #include <string> int main() { std::regex re("a(a)*b"); std::string target("aaab"); std::smatch sm; std::cout << sm.size() << '\n'; std::regex_match(target, sm, re); std::cout << sm.size() << '\n'; }
Output:
0 2
See also
|
returns iterator to the beginning of the list of sub-matches
(public member function) |
|
|
returns iterator to the end of the list of sub-matches
(public member function) |