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Refactoring/Big Refactorings


1. Chapter 12 Big Refactorings

1.1. Tease Apart Inheritance

  • You have an inheritance hierarchy that is doing two jobs at once.
    Create two hierarchies and use delegation to invoke one from the other.

1.2. Convert Procedural Design to Objects

  • You have code written in a procedural style.
    Turn the date records into objects, break up the behavior, and move the behavior to the objects.

1.3. Separate Domain from Presentation

  • You have GUI classes that contain domain logic.
    Separate the domain logic into separate domain classes.

1.4. Extract Hierarchy

  • You have a class that is doing too much work, at least in part through many conditional statements.
    Create a hierarchy of classes in which each subclass represents a special case.


Refactoring
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