PresenceDetection/Util/Helpers.h

#ifndef UTIL_HELPERS_H
#define UTIL_HELPERS_H

#include <functional>


namespace PresenceDetection {
namespace Util {
namespace Helpers {

template <int... Is>
struct index {};

template <int N, int... Is>
struct gen_seq : gen_seq<N - 1, N - 1, Is...> {};

template <int... Is>
struct gen_seq<0, Is...> : index<Is...> {};

template <typename ...FunctionArguments, typename ...Arguments, int... Is>
void execute(std::function<void(FunctionArguments...)> const & function, std::tuple<Arguments...>& tuple, index<Is...>)
{
	function(std::get<Is>(tuple)...);
}

template <typename ...FunctionArguments, typename ...Arguments>
void execute(std::function<void(FunctionArguments...)> const & function, std::tuple<Arguments...>& tuple)
{
	execute(function, tuple, gen_seq<sizeof...(Arguments)>{});
}

} // namespace Helpers
} // namespace Util
} // namespace PresenceDetection

#endif // UTIL_HELPERS_H