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eXtreme Programming Development

eXtreme Programming Development. Adrian Williamson People, Technology and People and Technology Consultant. Why? What? Who? When? So what … Summary. Real eXtreme Programming. GT-X7 started in 1999 500,000 lines of Java by 2005 Modular but not re-factored Tested but not TDD.

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eXtreme Programming Development

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  1. eXtreme Programming Development Adrian Williamson People, Technology and People and Technology Consultant

  2. Why? What? Who? When? So what … Summary Real eXtreme Programming

  3. GT-X7 started in 1999 500,000 lines of Java by 2005 Modular but not re-factored Tested but not TDD Why? (1 of 2)

  4. Neil decided to do something about it … Why? (2 of 2) Support 2004 Support 2005

  5. Transformation required! What? (1 of 9) Stop the world I want to get off!

  6. What? (2 of 9) Read the books, browse the web

  7. What? (3 of 9) XP Practices The Planning Process (Planning Game) XP "customer” defines business value of features, cost estimates from programmers. Metaphor A common "system of names" and description that guides development. Simple Design The simplest program for current requirements. Little building "for the future”. Testing Constant Software Validation: Test Driven development; Customer acceptance tests. Refactoring Keep software clean: without duplication, high communication, simple, yet complete. Pair Programming Two programmers working together at one machine.

  8. What? (4 of 9) XP Practices Collective Ownership All the code belongs to all the programmers. Changes without delay. Continuous Integration XP teams integrate and build the software system multiple times per day. 40-hour Week Tired programmers make more mistakes. Stay fresh, healthy, and effective. On-site Customer The dedicated individual empowered to set requirements, priorities, and answer questions. Coding Standard All the programmers need to write the code in the same way.

  9. What? (5 of 9) XP Principles - Fundamental • Rapid Feedback • Assume Simplicity • Incremental Change • Embracing Change • Quality Work

  10. What? (6 of 9) XP Principles - Further • Teach Learning • Small Initial Investment • Play to Win • Concrete Experiments • Open, honest Communication • Work with people's instincts • Accepted Responsibility • Local Adaptation • Travel Light • Honest Measurement

  11. What? (7 of 9) Phone the consultants

  12. Support costs Lost development opportunity Product Quality Company and Product image Staff Predictability Method What? (8 of 9) Build a business case

  13. Pilot .NET ciboodle Mobile Client Prepare Train team leads Workshops for team leads Choose a date Train developers Start! What? (9 of 9) Implementation Plan

  14. Business Quiet Projects Quiet and Within Envelope Team Building Complete Team Stable Test Team Established Support team LEAN Kaizen September 2005! When Happenstance

  15. eXtreme Programming So What? (1 of 5)

  16. September 2005! So What? (2 of 5)

  17. Planning 6 week cycles Teams Support, Core, Point, New Features, Strategic, Test, Docs Reporting Velocities, test coverage, defect rates Balanced Scorecard Waiting … So What? (3 of 5) Operation

  18. BCS Awards 2006 Best young developer medal– Mobile team Project medal – BASCO mobile livestock tracking So What? (4 of 5) Prizes !!

  19. eXtreme Ironing! So What? (5 of 5)

  20. Thank You! - Any Questions?Adrian Williamson

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