Learn Eiffel - 10 Code Examples & CST Typing Practice Test
Eiffel is a high-level, object-oriented programming language designed for software engineering with a strong emphasis on correctness, reusability, and maintainability. It supports the Design by Contract methodology, promoting robust and reliable applications.
Learn EIFFEL with Real Code Examples
Updated Nov 20, 2025
Learning Path
Learn basic OO principles
Understand Eiffel syntax and class structure
Master Design by Contract methodology
Practice with EiffelStudio IDE
Build reusable components and libraries
Skill Improvement Plan
Week 1: Basic classes and objects
Week 2: Contracts and assertions
Week 3: Inheritance and polymorphism
Week 4: Generic classes and reusable libraries
Interview Questions
What is Design by Contract in Eiffel?
How does Eiffel support multiple inheritance?
Explain generic classes in Eiffel.
How are preconditions, postconditions, and invariants used?
What is EiffelVision and its purpose?
Cheat Sheet
class ACCOUNT
feature
deposit(amount: REAL)
require amount > 0
ensure balance = old balance + amount
Books
Object-Oriented Software Construction by Bertrand Meyer
Eiffel: The Language
Programming in Eiffel
Tutorials
EiffelStudio Getting Started
Eiffel Tutorial for Beginners
EiffelVision GUI Tutorial
Official Docs
EiffelStudio Documentation
Design by Contract Reference
Eiffel Language Standard
Community Links
EiffelForum
StackOverflow Eiffel tag
GitHub Eiffel projects
Community Support
Eiffel Forum
EiffelStudio user community
StackOverflow Eiffel tag
GitHub Eiffel projects
Academic papers and university courses
Frequently Asked Questions about Eiffel
What is Eiffel?
Eiffel is a high-level, object-oriented programming language designed for software engineering with a strong emphasis on correctness, reusability, and maintainability. It supports the Design by Contract methodology, promoting robust and reliable applications.
What are the primary use cases for Eiffel?
High-reliability enterprise software. Safety-critical systems. Reusable component libraries. Formal software engineering projects. Educational use for software engineering principles
What are the strengths of Eiffel?
Encourages correct and maintainable code. Supports formal software engineering methodologies. Highly reusable libraries via genericity. Robust exception handling and error detection. Object-oriented features fully integrated with contract-based programming
What are the limitations of Eiffel?
Smaller developer community compared to mainstream languages. Limited third-party libraries and ecosystem. Less industry adoption for modern web/mobile applications. Verbose syntax for simple tasks. Learning curve for Design by Contract concepts
How can I practice Eiffel typing speed?
CodeSpeedTest offers 10+ real Eiffel code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.