Good design is crucial for the flexibility and testability of code. In this blog you can read more about design problems and solutions.
Tight coupling:
Embedding logic directly in different parts of the code makes it harder to make changes. This can lead to a situation where even small adjustments have major consequences for other parts of the application. Therefore, it is better to loosely couple components so they can be modified independently of each other.
Poor separation of concerns:
Not separating different responsibilities leads to code that is harder to maintain and extend. Therefore, it is important to create a clear separation between different layers of the application, such as the presentation, logic, and data layers. This makes it easier to make changes and add new features without disrupting existing code.
Excessive use of global state:
Relying on global variables can make the code unpredictable and harder to debug. It is therefore recommended to minimize the use of global state and instead use local variables or parameters. This promotes the predictability of the code and makes it easier to understand its behavior.
Ignoring dependency injection:
Not using dependency injection can make the code harder to test and less modular. By explicitly injecting dependencies, the testability of the code can be significantly improved. This makes it possible to easily use mock objects during testing, which benefits the quality of the software.
Want to know more about design problems and solutions or do you have questions or comments? I look forward to hearing from you!