Remote pair programming (BuildStuffLt)
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Using pair programming can transform your team from a sad team to a fun team. It even works in a remote context.
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Remote pair programming (BuildStuffLt)
- 1. Remote Pair Programming BuildStuff.lt Johannes Brodwall Exilesoft Chief scientist @jhannes
- 2. How can a distributed team still collaborate closely?
- 4. This talk is for you if you…
- 5. You work in a team, but...
- 6. Your team doesn’t feel like a team
- 7. Your distributed team doesn’t feel like a team
- 9. Three things to become a super productive team
- 10. But first
- 11. But first – a competition:
- 12. Competition: Find the blue sentence
- 13. 1. What is a super team 2. Building a super team with pairing 3. Getting the benefits 4. Summary
- 14. Part I
- 15. What is a super team?
- 20. Rabbit hole!
- 21. Shared context
- 23. Whops! No!
- 25. Working baseline
- 28. “Eureka!”
- 29. 20 minutes fix (where 10 was waiting)
- 30. Problem solved
- 31. The sad team
- 32. Planning Johannes: You’ll create CRUD SOAP service for projects with applications Okay Backend dev “Scrum” Johannes “Master”
- 33. Planning How long will it take? Um… Backend dev “Scrum” Johannes “Master”
- 34. Planning Backend dev 2 Backend dev “Scrum” Johannes “Master” It’s pretty easy with Hibernate Okay, 8 hours for each of Create… then !
- 35. Stand-up Today, I will work on Create Project Backend dev Database dev Scrum master Johannes Designer Frontend dev
- 36. Stand-up No impediments Backend dev Database dev Scrum master Johannes Designer Frontend dev
- 37. Behold – the uber coder
- 38. Exception! org.hibernate.PropertyValueException: not-null property references a null or transient value: ....common.entities.Application._applicationsBackref org.hibernate.engine.Nullability.checkNullability(Nullability.java:95) org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:313) org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:204) org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:130) org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEvent Listener.java:210) org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56) org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195) org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50) org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
- 43. Stand-up Yesterday, I worked on Create Project Backend dev Database dev Scrum master Johannes Designer Frontend dev
- 44. Stand-up Today, I will hopefully fix the exception and also do Delete Project Backend dev Database dev Scrum master Johannes Designer Frontend dev
- 45. Stand-up No impediments Backend dev Database dev Scrum master Johannes Designer Frontend dev
- 46. Stand-up How could they help anway Backend dev Database dev Scrum master Johannes Designer Frontend dev
- 48. Behold – the uber coder
- 50. Stand-up Yesterday, I finally finished Delete after 3 days of «coding» I didn’t need the Delete service Backend dev Database dev Scrum master Johannes Designer Frontend dev
- 51. Stand-up Yesterday, I finally finished Delete after 3 days of «coding» I didn’t need the Delete service Backend dev Database dev Scrum master Johannes Designer Frontend dev
- 52. STOP
- 53. Imagine you should carry 10 wooden beams Each is 3 meters and 30 kg
- 54. The fun team
- 55. Stand-up I’m ready for a new task. What’s on the board.. Johannes Scrum master Johannes
- 56. Stand-up «Let’s users administrate their projects» Johannes Scrum master Johannes
- 57. Stand-up I haven’t done any Hibernate tasks before. Who can I pair with? Scrum master Johannes Johannes I can work together with you
- 59. Exception! org.hibernate.PropertyValueException: not-null property references a null or transient value: ....common.entities.Application._applicationsBackref org.hibernate.engine.Nullability.checkNullability(Nullability.java:95) org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:313) org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:204) org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:130) org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEvent Listener.java:210) org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56) org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195) org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50) org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
- 60. That link doesn’t really seem relevant. Are we getting anywhere? Time to ask for help?
- 61. I think Dileepa has worked on this sort of thing before
- 62. Yeah, just look at the Person HasMany Roles mapping Dileepa
- 64. The difference
- 65. Everyone works everywhere Knowledge is disseminated You’re never alone
- 66. Part II
- 69. Debate club “No, this variable should be called fooNumber, not fooNum”, “But it’s a common abbreviation”
- 70. Dedicated driver “I’ll write the parser” “I’ll design the algorithm”
- 71. Driver-navigator “I don’t know how to solve this, so I’ll sit at the keyboard”
- 72. Ping-pong
- 77. Failing test Write code Failing test Write code Failing test
- 79. Failing test Write code Refactor code and tests Failing test Write code Refactor code and tests Failing test
- 80. Put together
- 81. Failing test Write code Failing test Write code Failing test
- 82. Failing test Write code Refactor code and tests Failing test Write code Refactor code and tests Failing test
- 83. Failing test Write code Refactor code and tests Failing test Write code Refactor code and tests Failing test
- 85. Kata: Number to text
- 86. Kata: Number to text 8192 => eight thousand one hundred and ninety two 125,017 => one hundred and twenty five thousand and seventeen
- 87. What does it feel like?
- 88. Part III
- 89. From here to there
- 90. Make sharing into a goal
- 93. Arunas Add new company ✓ Display contacts on map ✓ Dileepa ✓ Chinthaka ✓ Store password securely ✓ ✓ ✓ Authenticate user by company Sergey ✓ ✓ Filter contacts in list Usernames with Norwegian letters are rejected Johannes Thomas ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
- 94. Arunas Add new company ✓ Display contacts on map ✓ Dileepa ✓ Chinthaka ✓ Store password securely ✓ ✓ ✓ Authenticate user by company Sergey ✓ ✓ Filter contacts in list Usernames with Norwegian letters are rejected Johannes Thomas ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
- 95. Arunas Add new company ✓ Display contacts on map ✓ Dileepa ✓ Chinthaka ✓ Store password securely ✓ ✓ ✓ Authenticate user by company Sergey ✓ ✓ Filter contacts in list Usernames with Norwegian letters are rejected Johannes Thomas ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
- 97. JIRA
- 98. With a true team, no member owns more than their current task
- 100. You will get more done (But not in the first or second sprint)
- 101. Distance
- 102. • • • Skype (or any voice sharing) GoToMeeting (or flexible screen sharing) Dropbox (or any file sharing)
- 103. Skill and tact
- 104. • Experiment with switching patterns • Try out ping-pong • “Could we try it this way first?”
- 105. Building your skills
- 106. Fun events
- 108. Expect exhaustion
- 109. Just do it
- 110. • Ask for help • Don’t wait for • • Perfect tool Perfect oppunity
- 111. Conclusion
- 112. What
- 113. • • • Two people at one codebase No member owns a task beyond the day Team rotates pairing
- 114. Why
- 115. • “Rockstar programmer” model doesn’t scale
- 116. • • • • • • • Less Overproduction (unused functions in API) Less Waiting (for the only person who knows X) Less Motion (as everyone gets more skilled) Fewer Defects (as two pair of eyes see better) Less Over-processing (from double responsibility) Less Inventory (as team works more focused) Less Transportation (handoffs inside a story)
- 117. How
- 118. • • • Ask for help – don’t work alone Try ping pong programming for two hours Be open, share and listen
- 119. Competition: What was the blue sentence?
- 120. A team creates together what no member could do alone
- 121. You can start as soon as you get back to work