Sol Tuple and function tests

sol.scratch.cpp

void breaking() {
	std::cout << "Nice!~\n";
}
 
std::tuple<double, double> breaking_multi() {
	return std::make_tuple(567.2, 2.567);
}
 
struct a_type {
	std::tuple<double, double> breaking_multi() {
		return std::make_tuple(567.2, 2.567);
	}
};
 
int main() {
	sol::state lua;
 
	a_type at;
	int a = 10;
	int b = 11;
	auto breaking_lambda = [ ] () { std::cout << "Nice Lambda!\n"; };
	lua.set_function("arf", breaking);
	lua.set_function("arflambda", breaking_lambda);
	lua.set_function("arfmulti", breaking_multi);
	lua.set_function("arfmulti", &a_type::breaking_multi, at);
	lua.script("arf()\n"
	"arflambda()\n"
	"x,y = arfmulti()\n"
	"function add_double(a, b)\n"
	" return a + b, a + b;\n"
	"end\n"
	"function add(a, b)\n"
	" return a + b;\n"
	"end\n"
	"function ultra_add(a, b, c)\n"
	" return a + b + c;\n"
	"end");
	auto fd = lua.get<sol::function>("add_double");
	auto f = lua.get<sol::function>("add");
	auto fx = lua.get<sol::function>("ultra_add");
	std::tuple<int, int> arf = fd.invoke<int, int>(10, 10); // 20, 20
	std::cout << lua.get<double>("x") << ", " << lua.get<double>("y") << std::endl;
	std::cout << std::get<0>(arf) << ", " << std::get<1>(arf) << std::endl; // 21
	std::cout << f.invoke<int>(a, b) << std::endl; // 21
	std::cout << fx.invoke<int>(a, a, b) << std::endl; // 31
 
}