The Natural Order of Refactoring Under the Microscope Part 3: Extract Method
Analyzing Class and Method Responsibilities
In the next step, we examine the responsibilities of individual classes and methods, checking if they align with the intended responsibility of the class. It is best to analyze all methods and group them based on performing similar operations. We look for a place for these in other classes or a new class. Remember: if there is a significant private method in a class (longer than 3-4 lines), it should be moved to another class.
Read MoreNatural Order of Refactoring Explored Part 2: Compose Method
Compose Method
Analyzing methods, such as the one presented in Part 1, often leads us to understand the main points of the algorithm contained in them. This insight paves the way for the next step: try to split a large method into smaller steps by extracting them into separate methods (refactoring using the Extract Method). Thus, the original method will consist of a sequence of calls to these new methods. With the right naming conventions, you can achieve code that reads like a book.
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