Function at_t

tests/test_numpy_array.cpp:127–129

}
template <typename... Ix>
py::ssize_t at_t(const arr_t &a, Ix... idx) {
    return a.at(idx...);
}
template <typename... Ix>
arr_t &mutate_at_t(arr_t &a, Ix... idx) {
    a.mutable_at(idx...)++;