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#include <iostream>
#include <regex>
using namespace std;
int main()
{
auto func = [] () { cout << "Hello world from C++11" << endl; };
func(); // now call the function
std::regex r("st|mt|tr");
std::cout << "std::regex r(\"st|mt|tr\")" << " match tr? ";
if (std::regex_match("tr", r) == 0)
std::cout << "NO!\n ==> Using pre g++ 4.9.2 libstdc++ which doesn't implement regex properly" << std::endl;
else
std::cout << "YES!\n ==> Correct libstdc++11 implementation of regex (4.9.2 or later)" << std::endl;
}
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