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std::sub_match<BidirIt>:: sub_match

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std::sub_match
Member functions
sub_match::sub_match
Non-member functions
(until C++20) (until C++20) (until C++20) (until C++20) (until C++20) (C++20)
constexpr sub_match ( ) ;
(since C++11)

Default constructs a std::sub_match . The matched member is set to false and the inherited members first and second are value-initialized.

This is the only publicly accessible and defined constructor.

Example

Run this code 
#include <cassert>
#include <regex>
int main()
{
    std::sub_match<const char*> s;
    assert(!s.matched);
}