Method load

cpp/src/arrow/util/bitmap_writer.h:274–277

  template <typename DType>
  DType load(const uint8_t* bitmap) {
    assert(bitmap + sizeof(DType) <= bitmap_end_);
    return bit_util::ToLittleEndian(util::SafeLoadAs<DType>(bitmap));
  }

  template <typename DType>
  void store(uint8_t* bitmap, DType data) {