text: #define SOL_CHECK_ARGUMENTS 1
  #include <sol.hpp>
  
  #include "../../assert.hpp"
  
  int main(int, char*[]) {
  	sol::state lua;
  	lua.open_libraries(sol::lib::base);
  
  	lua.script("function f (a, b, c, d) return 1 end");
  	lua.script("function g (a, b) return a + b end");
  
  	// sol::function is often easier: 
  	// takes a variable number/types of arguments...
  	sol::function fx = lua["f"];
  	// fixed signature std::function<...>
  	// can be used to tie a sol::function down
  	std::function<int(int, double, int, std::string)> stdfx = fx;
  
  	int is_one = stdfx(1, 34.5, 3, "bark");
  	c_assert(is_one == 1);
  	int is_also_one = fx(1, "boop", 3, "bark");
  	c_assert(is_also_one == 1);
  
  	// call through operator[]
  	int is_three = lua["g"](1, 2);
  	c_assert(is_three == 3);
  	double is_4_8 = lua["g"](2.4, 2.4);
  	c_assert(is_4_8 == 4.8);
  
  	return 0;
  }
  