variadic templates with template function names

Question

following this question , I am trying to avoid copy-pasting some code related to calling all of the same-named methods of the mixins of the class BaseSensor.

Answer 1

You can use a generic lambda and a kind of inversion of control.
It follows a minimal, working example:

#include

struct EdgeSensor
{
    void update() { std::cout << "EdgeSensor::update" << std::endl; }
    void printStats() { std::cout << "EdgeSensor::printStats" << std::endl; }
};

struct TrendSensor
{
    void update() { std::cout << "TrendSensor::update" << std::endl; }
    void printStats() { std::cout << "TrendSensor::printStats" << std::endl; }
};

template
class BaseSensor : public SensorType ...
{
    template
    void execute(F &&f) {
        int arr[] = { (f(static_cast(*this)), 0)..., 0 };
        (void)arr;
    }

public:
    void update() {
        execute([](auto &t) { t.update(); });
    }

    void printStats() {
        execute([](auto &t) { t.printStats(); });
    }
};

int main() {
    BaseSensor ets;
    ets.update();
    ets.printStats();
}