Guidelines to help reduce code complexity:
- Focus on smaller methods – easier to read and understand and maintain.
- Reduce the number of “branching decisions;” instead of if/else and switch, try to implement a decorator and strategy pattern.
- Clean duplicated code – follow the DRY principle.
- Remove obsolete code – the code that is not used should be removed, not commented out.
- Create reusable helpers and services that encapsulate functionality.