Clean Code

 A path to Agile Software Craftsmanship

Manifesto for Agile Software Development

• Individuals and interactions over processes and tools
• Working software over comprehensive documentation
• Customer collaboration over contract negotiation
• Responding to change over following a plan

Manifesto for Software Craftsmanship

• Not only working software, but also well-crafted software
• Not only responding to change, but also steadily adding value
• Not only individuals and interactions, but also a community of professionals
• Not only customer collaboration, but also productive partnerships

Praktiken

• DRY
• KISS
• Careful about Premature Optimization
  • Premature optimization is the root of all evil -- DonaldKnuth​
• ​Favor composition over inheritance

Prinzipien

• Boyscout Rule
• Ursachenanalyse
• VCS
• Refactoring
  • Extract Method
  • Rename
• Täglich reflektieren

Roter Grad

Praktiken

• Single Level of Abstraction (SLA)
• Single Responsibility Principle (SRP)
• Seperation of Concerns (SoC)
• ​Code Conventions

Prinzipien

• Issue Tracking
• Automatisierte Integrationstests
• Reviews
• Lesen Lesen Lesen

Orangener Grad

Praktiken

• Interface Segregation Principle (ISP)
• Dependency Inversion Principle (DIP)
• Liskov Substitution Principle (LSP)
• Prinzip der geringsten Überraschung
• Information Hiding

Prinzipien

• Automatisierte Unit-Tests
• Mocking/Stubbing
• Code-Coverage
• Komplexe Refaktorisierung
• Teilnahme an Fachveranstaltungen

Gelber Grad

Praktiken

• Open Closed Principle (OCP)
• Tell, don't ask
• Law of Demeter

Prinzipien

• Continous Integration
• Statische Codeanalyse
• Inversion of Control Container
• Messen von Fehlern
• Erfahrung weitergeben

Grüner Grad

Praktiken

• Entwurf und Implementierung überlappen nicht
• Implementierung spiegelt Entwurf
• YAGNI

Prinzipien

• Continous Delivery
• Iterative Entwicklung
• Komponentenorientierung
• Test first
  • TDD

Blauer Grad

Andere Resourcen

• http://clean-code-developer.de/
• https://www.softwerkskammer.org/