What are some common best practices for writing maintainable code?

During my final year, I worked on a group project to develop a web application for a local charity. We emphasized writing maintainable code by establishing coding standards and using clear, descriptive names for our functions and variables. Each member was responsible for writing documentation for their parts of the code to ensure that everyone understood how it worked. This practice not only helped us during the project but also made it easier to explain our work to the charity staff when we delivered the final product. As a result, we received positive feedback for the clarity and usability of our application.

I volunteered for a non-profit organization where I helped maintain their website. To ensure that the code was maintainable, I focused on writing comments for complex sections of the code and used consistent formatting throughout. I also suggested creating a README file that outlined how to make updates or changes to the site. This approach made it easier for future volunteers to step in and help with the website, ensuring that it could be sustained without requiring extensive retraining. It was rewarding to see how our efforts made a difference, allowing the organization to continue serving its mission effectively.

In my internship, I was part of a team that worked on a mobile application. One of my key takeaways was the importance of writing unit tests alongside the code. My mentor emphasized that this practice not only ensures the code works as intended but also makes it easier to refactor and add new features later on. I contributed by writing tests for the user interface components I developed, which helped catch bugs early and made it easier for the team to maintain the application. This experience taught me that maintainable code is an investment in the future of any project.