5 best practices to have a good code quality

When you have several developers working on your project, it is quite hard to maintain a constant code quality. Hereafter are described 5 key points your team should respect to ensure the quality of your project.

  • A well-defined architecture
    Separating your application into independent parts by using patterns like MVC or MVVM enables to have a clear and quick overview of the whole. The business features should also be treated independently, as far as possible.

  • A documented code
    Documentation is essential. Even if the code written is crystal clear, adding some comments will not hurt and could be useful for the less experienced developers of the team.

  • Factorization
    You cannot avoid any redundancy in the code. Anyway, before starting to develop a new feature, ask your team if something similar exists elsewhere, and plan refactoring tasks from time to time.

  • An understandable code
    Make your code simple even if it is not the most efficient way. A too complex code is impossible to maintain, and harder to reuse. To improve readability, very simple rules can do a lot. Encourage your team to name clearly the variables and methods, and to respect indentation.

  • Unit tests are a must-have
    Unit tests do not guarantee a bug-free code. Anyway, they are a first level of control. Using a tool like Sonar enables you to check the level of test coverage of your project. Of course, once you have coded the tests, you should automate them to take full benefit of your work.
    Even if these recommendations are pretty simple to understand, they are harder to follow over time. What is essential is to consider the code quality as an on-going job, and to maintain constantly the efforts of the team. To help you do so, you should consider using tools to monitor code quality and detect any decline.