# 99 Bottles of OOP by Sandi Metz

3 Hacker News commenters recommended 99 Bottles of OOP by Sandi Metz and 0 criticized it, November 2025 to November 2026. It was recommended in 3 of 13 months.

**Verdict:** Recommended as a short, practical introduction to object-oriented design and refactoring that helps build maintainable software.

## Why people recommend it

- Short, practical introduction to refactoring (2 comments): "is a good short display of how it works and where it helps actually building maintainable software" ([source](https://news.ycombinator.com/item?id=47339234)) "was an excellent introduction to refactoring" ([source](https://news.ycombinator.com/item?id=48620515))
- Helps build maintainable software (1 comments): "is a good short display of how it works and where it helps actually building maintainable software" ([source](https://news.ycombinator.com/item?id=47339234))
- Techniques applied with good outcomes (1 comments): "I successfully applied those techniques to good ends and outcomes." ([source](https://news.ycombinator.com/item?id=46504293))

## Alternatives hackers recommend

- [Crafting Interpreters by Robert Nystrom](https://hackerapproved.com/p/crafting-interpreters.md): 60 recommend
- [Clean Code by Robert C. Martin](https://hackerapproved.com/p/clean-code.md): 31 recommend
- [The Pragmatic Programmer by Hunt and Thomas](https://hackerapproved.com/p/pragmatic-programmer.md): 28 recommend
- [How to Design Programs by Felleisen, Findler, Flatt and Krishnamurthi](https://hackerapproved.com/p/how-to-design-programs.md): 18 recommend
- [Mastering Emacs by Mickey Petersen](https://hackerapproved.com/p/mastering-emacs.md): 17 recommend

## Where to get it

- [See price on Amazon](https://www.amazon.com/dp/1944823077?tag=hackerapprove-20) (affiliate link)
- [Bookshop.org](https://bookshop.org/a/130825/9781944823078) (affiliate link)

## Cite as

Hacker Approved, "99 Bottles of OOP by Sandi Metz", https://hackerapproved.com/p/99-bottles-of-oop/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).