Function data_t

tests/test_numpy_array.cpp:88–90

template <typename... Ix>
arr data_t(const arr_t &a, Ix... index) {
    return arr(a.size() - a.index_at(index...), a.data(index...));
}

template <typename... Ix>
arr &mutate_data(arr &a, Ix... index) {