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Ebay legacy-code-retreat

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Konrad Malawski
Konrad Malawski
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Refactoring by example Konrad Malawski kmalawski@ebay.com @ the sprinters
Refactoring to Patterns • Internally available for free on safari: 
 http://techbus.safaribooksonline.com/book/ software-engineering-and-development/refactoring/ 0321213351/advance-praise-for-refactoring-topatterns/i?query=((Refactoring+to +Patterns))#snippet
Legacy Code Retreat • We’ll use an existing codebase • Try to understand it • Apply automatic refactorings • Test it
Legacy Code Retreat • github / kmalawski / legacy-code-retreat-java • git clone git@github.scm.corp.ebay.com:kmalawski/legacycode-retreat-java.git
Popular refactorings • Extract Method • Introduce Variable / Field / Constant / Parameter • iNline • Pull Up / Push Down • Introduce Interface • Move Class / Move Instance Method (F6)
Popular refactorings • Rename (Shift F6) • Extract Interface / Class • Introduce Parameter Object • Introduce delegate • Introduce “null object” / Optional / Option
Popular refactorings • Dependency Injection (NOT THE FRAMEWORK ”X”) • Introduce Adapter • Replace Conditionals with Strategy • Remove “Primitive Obsession” • Generify
When you’re not sure • F2 - go to next error / warning • Meta Shift A - grep all commands • Alt Enter - act on hints • Ctrl T - “refactor this”
Legacy Code Retreat • 10: 25 min coding • 20: 5 min retro • 30: goto 10

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