What are code smells and how can I refactor my code?

What are code smells and how can I identify them in my code?

Code smells are indicators of potential issues in your code, like poor design or maintainability. Common examples include long methods, duplicated code, and large classes. You can identify them by reviewing your code for these patterns.

Can you give me some examples of common code smells?

Sure! Some common code smells include:

1. Duplicated Code: The same code appears in multiple places.
2. Long Method: A method that is too long and does too much.
3. Large Class: A class that has too many responsibilities.

How do I refactor code to eliminate these smells?

To refactor code, you can:

1. Extract methods to reduce method length.
2. Use inheritance or composition to break down large classes.
3. Create utility functions to eliminate duplication.

Are there any tools that can help me identify code smells?

Yes, there are several tools like SonarQube, ESLint, and CodeClimate that can help you identify code smells and suggest improvements.