#include <iostream>
#include <memory>
#include <variant>
class Car {
public:
Car( ) = default;
};
class ICECar : public Car {
public:
ICECar( ) {
}
void visitCarService( ) {
std::cout << "ICE visitCarService\n";
}
};
class ECar : public Car {
public:
ECar( ) {
}
void visitCarService( ) {
std::cout << "E visitCarService\n";
}
};
using car_variant = std::variant<
std::shared_ptr<ICECar>,
std::shared_ptr<ECar>>;
template <size_t C>
void visitCarService(std::array<car_variant, C>& cars) {
for (auto& c : cars) {
std::visit(
[](auto&& arg) {
arg->visitCarService( );
},
c);
}
}
int main(int argc, char** argv) {
ICECar ice_car { };
ECar e_car { };
std::array<car_variant, 2> cars {
std::make_shared<ICECar>(ice_car),
std::make_shared<ECar>(e_car)
};
visitCarService(cars);
return 0;
}
