The five letters of the SOLID acronym stand for: Single…
““The five letters of the SOLID acronym stand for: Single Responsibility Principle: a class should have one and only one responsibility; that is, only one reason to change. The Lack of Cohesion Of Methods metric indicates the antipattern of too large a class. Open/Closed Principle: a class should be open for extension, but closed against modification. The Case Statement design smell suggests a violation. Liskov Substitution Principle: a method designed to work on an object of type T should also work on an object of any subtype of T. That is, all of T’s subtypes should preserve T’s “contract.” The refused bequest design smell often indicates a violation. Dependency Injection Principle: if two classes depend on each other but their implementations may change, it would be better for them to both depend on a separate abstract interface which is “injected” between them. Demeter Principle: a method can call other methods in its own class, and methods on the classes of its own instance variables; everything else is taboo. A design smell that indicates a violation is inappropriate intimacy.””
About This Quote
This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.
SOLID outlines five design rules to create maintainable, extensible code, warning against common smells like large classes and tight coupling.
In simple terms: SOLID guides clean code, warns against bad patterns.
Key Takeaway
Apply SOLID to improve software quality.
Themes
software engineering
design patterns
code quality
Mood
educational
technical
Type
instructional
practical
When to use this quote
- code review
- architecture design
- team training
- refactoring
Key Concepts
SOLID
design smells
object‑oriented programming
Questions to Reflect On
- Which SOLID principle is hardest to practice?
- How do you detect design smells early?
A Different Perspective
Complexity can hinder adoption.