What are the differences between code reusability and modularity?

What are the differences between code reusability and modularity?

Code reusability refers to the practice of using existing code for new functions, while modularity is about breaking code into smaller, manageable pieces or modules.

Can you give me an example of each?

Sure! For reusability, think of a function that calculates the area of a rectangle that you can use in multiple programs. For modularity, consider a program divided into separate modules like user authentication, data processing, and reporting.

Why is it important to have both in software development?

Having both enhances maintainability and scalability. Reusability saves time and effort, while modularity allows for easier updates and debugging.

Are there any downsides to focusing too much on one?

Yes, overemphasizing reusability can lead to complex dependencies, while excessive modularity might result in performance overhead and difficulty in integration.