Improved call to a lua function using Luab

main.cpp

#include <string>
#include <cassert>
#include "selene.h"

int main() {
    sel::State state;
    l.Load("example.lua")
    
    int difference;
    std::string greeting;
    std::tie(difference, greeting) = state.Call<int, std::string>("subtract_and_hello", 1, 3);
    
    assert(difference == -2 && greeting == "hello");
}