#include <iostream>
#include <vector>
#include <any>
#include <string>

using namespace std ;

int main()
{

  any x1 {5};
  cout << x1.has_value() << endl ; // == true
  cout << any_cast<int>(x1) << endl ;  // == 5

   if (x1.type() == typeid(int) )
     {
              // Extract using any_cast
              int value = any_cast<int>(x1);
              cout << "Found an integer: " << value << "\n";
     }

   //The type can be changed dynamically
   x1 = string{ "Some string" }  ;
   cout << any_cast<string>(x1) << endl ;


}