std::regex_error::code - std::regex_error::code
Defined in header <regex>
std::regex_constants::error_type code() const; (since C++11)
Returns the std::regex_constants::error_type that was passed to the
std::regex_error
constructor.
error_type describes different types of matching errors
(C++11) (typedef)
constructor constructs a regex_error object
(public member function)