#define SOL_ALL_SAFETIES_ON 1 #include std::string my_function(int D_count, std::string original) { // Create a string with the letter 'D' "D_count" times, // append it to 'original' return original + std::string(D_count, 'D'); } int main() { sol::state lua; lua["my_func"] = my_function; // way 1 lua.set("my_func", my_function); // way 2 lua.set_function("my_func", my_function); // way 3 // This function is now accessible as 'my_func' in // lua scripts / code run on this state: lua.script("some_str = my_func(1, 'Da')"); // Read out the global variable we stored in 'some_str' in // the quick lua code we just executed std::string some_str = lua["some_str"]; SOL_ASSERT(some_str == "DaD"); return 0; }