std::match_results<BidirIt,Alloc>::empty (3) - Linux Manuals

std::match_results<BidirIt,Alloc>::empty: std::match_results<BidirIt,Alloc>::empty

NAME

std::match_results<BidirIt,Alloc>::empty - std::match_results<BidirIt,Alloc>::empty

Synopsis

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.