overloaded

main.cpp

#include <gtest/gtest.h>
#include "overloaded.hpp"

TEST(Overload, function) {
	overloaded s{
		[](int) { std::cout << "int" << std::endl; },
		[](double) { std::cout << "double" << std::endl; },
		[](std::string) { std::cout << "string" << std::endl; }
	};
	s(1);
	s(1.);
	s("1");
}

overloaded.hpp

#pragma once

template <typename ...Ts> struct overloaded : Ts... { using Ts::operator()...; };
template <typename ...Ts> overloaded(Ts...) -> overloaded<Ts...>;