Experience Agile Programming SDC 2012 Gteborg Johannes Brodwall

Experience Agile Programming SDC 2012, Göteborg Johannes Brodwall Steria Norway Featu @jhannes ring: Ole C hr Ry nning

Goal • To have fun now! • For you to have fun later (stretch goal)

Agenda • What is «agile programming» • What to look for • Demonstration • Discussion • Possibly: Tips and tricks

What is «agile programming» ?

Ping pong

Ingredience #1: Pair programming

Ingredience #2: Test driven development

Failing test Write code Failing test

Ingredience #3: Refactoring

Failing test Write code Refactor code and tests Failing test

Put together

Failing test Write code Failing test

Failing test Write code Refactor code and tests Failing test

What effect do you expect? • On time • On cost • On quality • On work environment

Demonstration

What to watch for?

If you’re a project manager

If you’re an architect

If you’re a developer

If you’re neither

Please: • Talk about what you see to the person next to you (whisper) • Tweet to @jhannes and @olecr

Demonstration (Featuring OC Rynning)

Kata: Minesweeper

What did you see?

What did you see? • How often did we switch ”driver”? • Effects of pairing? • What did the ”non-driver” do? • How do you expect it to be different?

What do you think? • Pairing two seniors? • Pairing two juniors? • Pairing senior and talent? • Pairing senior and junior?

What did you see? • Was the step size right? • What was the first test? • How did we decide next test? • What was the final test?

What did you see? • Did we refactor the right amount? • How long was the code red? • Strengths in final design • Weaknesses in final design • Enough comments?

How to practice

Practice at work Practice katas Practice in dojos

Why become better at programming?

Seriously. Why?

Only 13. 37% of effort

Getting better quality

Getting better quality Correctness Maintainability

But more importantly!

Think better

Think better Raise your level of abstraction

Gothenburg Coding Dojo?

Gothenburg Coding Dojo http: //www. meetup. com/Goth. Py/

Conclusion

Conclusion Free your mind

Free your mind Practice our art

Thank you johannes. brodwall@steria. no http: //johannesbrodwall. com http: //twitter. com/jhannes http: //twitter. com/olecr