Software entities (classes, modules, functions, etc.)…
“Software entities (classes, modules, functions, etc.) should be open for extension, but closed for modification.”
About This Quote
This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.
Software components should be designed to allow new functionality without altering existing code, ensuring stability and adaptability.
In simple terms: Make software extendable but not changeable.
Key Takeaway
Design for change, protect existing behavior.
Themes
software design
modularity
maintenance
Mood
analytical
pragmatic
Type
technical
educational
When to use this quote
- API development
- plugin systems
- legacy code updates
- team coding standards
Key Concepts
object‑orientation
SOLID principles
Questions to Reflect On
- What parts of your code need better extensibility?
- How do you balance stability with flexibility?
A Different Perspective
Rigid designs can hinder innovation.