cpp/regex/match results/size
From Cppreference
< cpp | regex | match results
Template:cpp/container/match results/title Template:cpp/container/match results/sidebar
size_type size() const;
|
(no container - C++11 feature) | |
Returns the number of elements in the container, i.e. std::distance(begin(), end()).
Contents |
[edit] Parameters
(none)
[edit] Return value
the number of elements in the container
[edit] Exceptions
[edit] Complexity
Constant
[edit] See also
|
checks whether the container is empty (public member function) |
|
|
returns the maximum possible number of elements (public member function) |
[edit] Example
#include <iostream> #include <regex> #include <string> int main() { std::regex re("a(a)*b"); std::string target("aaab"); std::smatch sm; std::regex_match(target, sm, re); std::cout << sm.size() << '\n'; }
Output:
2