std::regex_traits::regex_traits -
std::regex_traits::regex_traits
regex_traits();
Default-constructs the std::regex_traits object, including
default-constructing the
private std::locale member or any other internal state as necessary.
// Run this code
#include <iostream>
#include <regex>
int main()
{
std::locale::global(std::locale("en_US.utf8"));
std::regex_traits<char> r1;
std::regex_traits<wchar_t> r2;
std::cout << "The regex locale is " <<
r1.getloc().name() << '\n';
}
The regex locale is en_US.utf8