A practical guide to writing cost-effective, maintainable, and pleasing object-oriented code. Available in Python, JavaScript, PHP, and Ruby editions. Also comes in "beer" and "milk" beverage variants. Digital-only formats: epub, kepub, mobi, pdf. Current version: 2.2.2 (as of December 1, 2024), approximately 105,000 words.
- Recognizing when code is "good enough" - Getting value from Test-Driven Development (TDD) - Proper refactoring (contrasted with "rehacktoring") - Locating concepts buried in code - Naming for deeper meaning - The "Flocking Rules" for safe code alteration - Open/Closed Principle for simplifying additions - Liskov Substitution Principle to avoid conditionals - Reducing Code Smells for targeted improvements - Polymorphism for changeability - Factories for manufacturing role-playing objects - Loosening coupling to hedge against uncertainty - Developing a "programming aesthetic"
The book contains an extended refactoring with rationale behind every change. It's a "hands-on workbook rather than a list of theoretical ideas." It teaches how OO design principles guide not just final code arrangement but "each decision about what line of code to write next."
The article quotes: "It explains the process of writing good code, and teaches you to achieve beautifully programmed ends by way of extremely practical means." The article quotes: "hands-on workbook rather than a list of theoretical ideas" The article quotes: "The Flocking Rules for safe code alteration — a structured approach to refactoring" The article quotes: "Proper refactoring, contrasted with "rehacktoring""
Programmers of all experience levels, from "rank novice to grizzled veteran." Language-agnostic in philosophy, though examples come in four specific languages.
Contains 3 new chapters (about 50% longer than the 1st Edition). Separate language-specific editions. Purchase grants rights to download any or all of the 32 possible combinations (4 languages × 2 beverages × 4 formats).
- Errata submissions accepted via dedicated page - FAQ available - Postcard program for those who can't afford the book - Return policy for dissatisfied purchasers - Sample chapters available for JavaScript, PHP, Python, and Ruby - Rated on Goodreads: - Mentioned in the Why Are Computers podcast