04 — Code Quality & Refactoring

Code smells are structures in source code that indicate potential design issues, such as poor naming or overly long functions. You can identify them during pull request reviews to find areas that are hard to understand or change.

You can refactor code safely by applying systematic recipes like Extract Method or Replace Conditional with Polymorphism. These techniques improve readability and maintainability while preserving the original external behavior.

Improving code readability involves applying best practices for clear naming and concise function design. This makes the codebase easier to understand, maintain, and less prone to errors during future changes.

Yes, you can use refactoring techniques during pull request reviews to identify hard-to-understand code. Apply systematic recipes to improve code quality and maintainability before merging the changes.

Use Replace Conditional with Polymorphism when refactoring complex conditional logic to improve software design. This technique enhances code maintainability and readability by delegating behavior to specific object types.