Bonjour!

Je souhaiteras faire ceci :

template <typename... Signature, typename TupleType, typename System, size_t... I, typename... Params, typename R>
                void apply_impl(EntityId entityId, TupleType& tpl, System& system, std::tuple<Params...>& params, std::index_sequence<I...>, std::vector<R>& rets) -> typename std::enable_if_t<(tpl.nbTypes() == 0)> {
                }
                template <typename... Signature, typename TupleType, typename System, size_t... I, typename... Params, typename R, class... D>>
                void apply_impl(EntityId entityId, TupleType& tpl, System& system, std::tuple<Params...>& params, std::index_sequence<I...>, std::vector<R>& rets)  -> typename std::enable_if_t<(tpl.nbTypes() > 0)> {
                    auto tp = std::make_tuple(getAgregate<std::tuple_element_t<I, std::tuple<Signature...>>>(tpl, entityId)...);
                    rets.push_back(system(tp, entityId, params));
                }

Mais j'ai une erreur de compilation :

/home/laurent/gitODFAEG/Demos/ODFAEGECSDemo/../../ODFAEG/include/odfaeg/Graphics/ECS/../../Core/ecs.hpp|336|error: template argument 1 is invalid|

Comment faire cela ?

Merci.