Refactoring Legacy Objective-C

Welcome! In this lesson, we'll dive into refactoring legacy Objective-C codebases. Refactoring means improving the internal structure of code without changing its external behavior.

For older Objective-C apps, refactoring is crucial. It helps reduce bugs, makes the code easier to understand, and paves the way for new features and modernization.

Before we refactor, we need to identify areas that need improvement. These are often called 'code smells' – indicators that something might be wrong with the code's design.

• Long Methods: Methods that do too many things.
• God Objects: Classes that have too many responsibilities.
• Duplicated Code: The same logic appearing in multiple places.
• Poor Naming: Unclear variable, method, or class names.

Recognizing these helps you target your refactoring efforts.