99 Bottles of OOP
99 Bottles of OOP by Sandi Metzby Sandi Metz and Katrina Owen and T. J. Stankus
Shares rank 71 of 115 programming books by recommenders
Recommended as a short, practical introduction to object-oriented design and refactoring that helps build maintainable software.
Recommended as a short, practical introduction to object-oriented design and refactoring that helps build maintainable software.
3 people gave an opinion
- recommend it
- 3
- criticize it
- 0
- approval share
- 100%
Recommended in 3 of 13 months
- November 2025: not recommended
- December 2025: not recommended
- January 2026: recommended
- February 2026: not recommended
- March 2026: recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: recommended
- July 2026: not recommended
- August 2026: not recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 3 people recommend itNeeds 10 or more, not met.
- Nobody criticizes itNeeds 2 to 1 or better, met.
- Recommended in 3 of 13 monthsNeeds 4 or more, not met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Short, practical introduction to refactoring
“is a good short display of how it works and where it helps actually building maintainable software”
Comment from 11 Mar 2026 in “You hired the AI to write the tests. Of course they pass” “was an excellent introduction to refactoring”
Comment from 21 Jun 2026 in “Code duplication is far cheaper than the wrong abstraction” Helps build maintainable software
“is a good short display of how it works and where it helps actually building maintainable software”
Comment from 11 Mar 2026 in “You hired the AI to write the tests. Of course they pass” Techniques applied with good outcomes
“I successfully applied those techniques to good ends and outcomes.”
Comment from 5 Jan 2026 in “Refactoring – Not on the backlog (2014)”
Other programming books people recommend
The four most recommended other programming books, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Crafting Interpretersby Robert Nystrom | 60 | 4 | 94% | 10 | — | Approved |
| Clean Codeby Robert C. Martin | 31 | 87 | 26% | 9 | — | — |
| The Pragmatic Programmerby Andy Hunt and Dave Thomas | 28 | 1 | 97% | 7 | — | Approved |
| How to Design Programsby Matthias Felleisen and Robert Bruce Findler and Matthew Flatt and Shriram Krishnamurthi | 18 | 2 | 90% | 7 | — | Approved |
| 99 Bottles of OOPby Sandi Metz and Katrina Owen and T. J. StankusThis page | 3 | 0 | 100% | 3 | — | — |
What people said
All 3 comments that mention it, newest first. Each links to the original comment.
“was an excellent introduction to refactoring”
“is a good short display of how it works and where it helps actually building maintainable software”
“I successfully applied those techniques to good ends and outcomes.”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.