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std::match_results::empty

From cppreference.com
< cpp‎ | regex‎ | match results
bool empty() const;
(since C++11)

Checks whether the match was successful.

Contents

[edit] Parameters

(none)

[edit] Return value

size() == 0 (false if *this represents the result of a successful match, true otherwise)

[edit] Exceptions

(none)

[edit] Complexity

Constant.

[edit] See also

returns the number of matches in a fully-established result state
(public member function) [edit]