#include <iostream>
#include <thread>
#include <variant>
#include <functional>

using namespace std ;



int add2Nos( int x1 , int y1 )
{
   return x1 + y1 ;
}



int main()
{
  //Lambda
  auto add = [](int x, int y) {
    return x + y;
  };
  int result = std::apply(add, std::make_tuple(1, 2)); // == 3
  cout << "result: " << result << endl ;

	return 1 ;
}