Experience Agile Programming XP Days Ukraine Йоханнес Бродвалл, Just-a-programmer Стерия

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

Agenda Description Demonstration with Dima Mindra Discussion Tips and tricks

Description

Kata: Minesweeper

Given: var minefield = new Minefield([ "....", ".*..", ".*.*", "...*“ ])

Kata: FizzBuzz

1 2 Fizz 4 Buzz Fizz 7 8 Fizz Buzz 11 Fizz FizzBuzz 16

Kata: Prime factors 1 => [] 2 => [2] 3 => [3] 4 => [2,2] … 2*2*13*17*23*23 => [2,2,13,17,23,23]

What do watch for How we interact How we progress through the code How we design How we use the language

Demonstration (Featuring Dmytro Mindra)

What did you see?

How often did we switch ”driver”? Effects of pairing? What did the ”non-driver” do?

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? Language tricks? Did we refactor the right amount? How long was the code red? Strengths in final design Weaknesses in final design

Why become better at programming?

Seriously. Why?

Only 13.37% of effort

Getting better quality

Correctness Maintainability

But more importantly!

Think better

Raise your level of abstraction

What to practice

Test the contract

API Not behavior

Test from outside-in

Who? Why? Pop! Mock

Practice pair programming

Ping pong

Failing test Fix the test Failing test Fix the test Failing test

Fix the test Failing test Fix the test Failing test Refactor

JohannesDmytro SergeyMikhail Volodymyr

JohannesDmytro SergeyMikhail Volodymyr

JohannesDmytro SergeyMikhail Volodymyr

All-green refactoring

Reduce the time of uncertainty

How to practice

Practice Practice at work Practice katas Practice in dojos

Kyiv Coding Dojo?

Pick a demo

1.Outside-in 2.Mocking 3.API test 4.All-green refactoring

Conclusion

Free your mind

Practice our art

Thank you (Please tweet in Cyrillic with english-like words)