Function as_pyarray

src/pybind.cpp:24–34

// as_pyarray is a helper function to convert a C++ sequence to a numpy array and zero-copy
template <typename Sequence>
inline py::array_t<typename Sequence::value_type> as_pyarray(Sequence &&seq) {
    // Move entire object to heap. Memory handled via Python capsule
    Sequence *seq_ptr = new Sequence(std::move(seq));
    // Capsule shall delete sequence object when done
    auto capsule = py::capsule(seq_ptr, [](void *p) { delete reinterpret_cast<Sequence *>(p); });

    return py::array(static_cast<py::ssize_t>(seq_ptr->size()),  // shape of array
                     seq_ptr->data(),  // c-style contiguous strides for Sequence
                     capsule           // numpy array references this parent
    );
}

PYBIND11_MODULE(_infinistore, m) {
    // client side