Learn EIFFEL with Real Code Examples
Updated Nov 20, 2025
Monetization
Enterprise software development
Safety-critical application contracts
Consulting for reliable system design
Reusable library distribution
Educational and academic usage
Future Roadmap
Modern EiffelStudio IDE improvements
Integration with modern GUI and web frameworks
Enhanced Eiffel libraries and components
Better tooling for testing and debugging
Continued focus on software correctness and reliability
When Not To Use
Small scripting tasks
Modern mobile app development
Rapid prototyping for web
Highly dynamic or loosely typed systems
Projects with tight integration with mainstream ecosystems without Eiffel libraries
Final Summary
Eiffel is a rigorously designed OO language for correctness, maintainability, and reusability.
Its Design by Contract methodology enforces reliability in software systems.
Used in high-reliability, enterprise, and safety-critical applications.
Less mainstream but highly valued for software engineering best practices.
Faq
Is Eiffel still relevant?
Yes - for software engineering and high-reliability systems.
Can Eiffel integrate with other languages?
Yes - C/C++, COM, .NET, and web services.
Does Eiffel support OO fully?
Yes - classes, inheritance, polymorphism, and generics are all supported.
What is Design by Contract?
A methodology to enforce correctness via preconditions, postconditions, and invariants.