template<size_t I = 0, typename DataType, typename... Tp>
void Forward(const DataType& input, std::tuple<Tp...>& network)
{
    std::get<I>(network).InputParameter() = input;

    std::get<I>(network).Forward(std::get<I>(network).InputParameter(),
                           std::get<I>(network).OutputParameter());

    ForwardTail<I + 1, Tp...>(network);
}

template<size_t I = 1, typename... Tp>
typename std::enable_if<I == sizeof...(Tp), void>::type
ForwardTail(std::tuple<Tp...>& network)
{
    LinkParameter(network);
}

template<size_t I = 1, typename... Tp>
typename std::enable_if<I < sizeof...(Tp), void>::type
ForwardTail(std::tuple<Tp...>& network)
{
    std::get<I>(network).Forward(std::get<I - 1>(network).OutputParameter(),
        std::get<I>(network).OutputParameter());

    ForwardTail<I + 1, Tp...>(network);
}