Interlude 3 . Design Patterns

Interlude 3. Design Patterns

I3.1. Patterns

Abstract Factory : Replace Constructor with Factory Method (several times) Factory Method : Replace Constructor with Factory Method Flyweight : Remove Setting Method, Change Value to Reference Interpreter : Extract Method and Move Method (from Composite) Observer : Separate Domain from Presentation, Duplicate Observed Data State : Replace Type Code with State/Strategy Strategy : Replace Type Code with State/Strategy Template Method : Form Template Method Joshua Kerievsky is working on a book about this subject called Refactoring to Patterns; perhaps it will be available by the time you read this.