std::match_results::empty
From cppreference.com
< cpp | regex | match results
| bool empty() const; |
(since C++11) (until C++20) |
|
| [[nodiscard]] bool empty() const; |
(since C++20) | |
Checks whether the match was successful.
Parameters
(none)
Return value
size() == 0 (false if *this represents the result of a successful match, true otherwise)
Exceptions
(none)
Complexity
Constant.
See also
| returns the number of matches in a fully-established result state (public member function) |