That said, the (build → test → deploy) remains valid. A savvy reader can update the code from the official GitHub, where the authors have issued patches.
When looking for "extra quality" educational materials, it is always recommended to support the authors by purchasing the official version through academic publishers or verified platforms. This ensures you receive the most recent errata, updated code snippets, and high-resolution diagrams that are often lost in unauthorized PDF scans. Conclusion That said, the (build → test → deploy) remains valid