utility functions

ReduCpp@store_factory.hpp

template <class A>
struct reducpp::reduce {
    template <class ...Reducers>
    static inline composer<A, Reducers...> with(Reducers ...reducers) {
        return composer<A, Reducers...>(reducers...);
    }
};

template <class A>
struct reducpp::store_factory {
    template <class ...Reducers>
    static auto make_store(const Reducers& ...reducers) {
        using CompositeState = typename composer<A, Reducers...>::CompositeState;
        return store<CompositeState, A>(reduce<A>::with(reducers...));
    }
};