Refactoring: Improving the Design of Existing Code

Chapter 8Moving Features

So far, the refactorings have been about creating, removing, and renaming program elements. Another important part of refactoring is moving elements between contexts. I use Move Function (198) to move functions between classes and other modules. Fields can move too, with Move Field (207).

I also move individual statements around. I use Move Statements into Function (213) and Move Statements to Callers (217) to move them in or out of functions, as well as Slide Statements (223) to move them within a function. Sometimes, I can take some statements that match an existing function and use Replace Inline Code with Function Call (222) to remove the duplication.

Two refactorings I often do with loops are Split Loop (227), to ...