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Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
Coding Dojo: Baby Steps (2014)
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Coding Dojo: Baby Steps (2014)

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  • 1. Coding Dojo: Baby Steps May 2014 Peter Kofler, ‘Code Cop’ @codecopkofler www.code-cop.org Copyright Peter Kofler, licensed under CC-BY.
  • 2. Peter Kofler • Ph.D. (Appl. Math.) • Professional Software Developer for 14 years • “fanatic about code quality” • I help development teams PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 3. Coding Dojo? Expectations?
  • 4. Coding Dojo Mindset ● Safe place outside work ● We are here to learn ● Need to slow down ● Focus on doing it right ● Collaborative Game PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 5. Dojo Structure ● Introduction 15' ● Coding 45' ● Interim (Retrospective) 15' ● Break 15' ● Coding 45' ● Retrospective 30' PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 6. TDD Skills ● Driving Development with Tests  ● Designing Test Cases ● Designing Clean Code ● Refactoring Safely PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 7. TDD should be... ● Add a little test for one concept/idea ● See it fail ● Add a little code to make all tests pass ● Refactor mercilessly ● Repeat PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 8. … but often is ● Write some high level test ● Write code for several different things ● Test and debug ● Test and debug ● Test and debug ● Add TODO to refactor later PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 9. Taking Baby Steps PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 10. Steps 1. Set up a timer for certain interval. 2. Write exactly one test - If the timer rings and the test is red then revert. - If the test is green before timer rings then commit. 3. Restart timer (no discussions in between timers) 4. Refactor - If timer rings and the refactoring is not complete then revert. - If the refactoring is complete before timer rings then commit. 5. Restart the timer (no discussions in between timers) 6. Go to 2 (next test) or 4 (continue refactoring) PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 11. Assignment: Tic-Tac-Toe PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 12. Tic-Tac-Toe ● http://en.wikipedia.org/wiki/Tic-tac-toe ● Board 3x3 ● X plays first, O plays second ● Implement ● 2 Player Game ● Determine Winner ● AI Bot Player PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 13. Don't Focus on Getting it Done. F0cus on Doing It Perfectly.
  • 14. Prepare ● Find a pair. ● Choose a programming language. ● Set up the environment. ● Set up source control repository (hg/git). ● Set up a timer for 2 minutes interval. ● Timer must run continuously. Don't stop to talk! PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 15. →Practice
  • 16. Closing Circle ● What did you learn today? ● What surprised you today? ● What will you do differently in the future? PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 17. Peter Kofler @codecopkofler www.code-cop.org Game by Adrian Bolboaca @adibolb http://blog.adrianbolboaca.ro/2013/03/taking-baby-steps/ PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY
  • 18. CC Images ● Dojo http://www.flickr.com/photos/49715404@N00/3267627038/ ● Todos http://www.flickr.com/photos/kylesteeddesign/3724074594/ ● Baby https://www.flickr.com/photos/11904001@N00/3983980813/ ● Game http://www.flickr.com/photos/benclinch/476855843/ ● Wants you http://www.flickr.com/photos/shutter/105497713/ PETER KOFLER, CODE-COP.ORG FANATIC ABOUT CODE QUALITY

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