Remote Pair Programming Agile India 2014 Johannes Brodwall Exilesoft Chief Guest starring: Niruka Ruhunage

How can a distributed team still collaborate closely?

How can a team collaborate well?

This talk is for you if you…

You work in a team, but...

Your team doesn ’ t feel like a team

Your distributed team doesn ’ t feel like a team

Who is using pair programming as their preferred approach?

After this talk

A receipe to have more fun with your team

But first

But first – a competition:

Competition: Find the blue sentence

1.What is a super team 2.Building a super team with pairing 3.Getting the benefits 4.Summary

Part I

What is a super team?

Sharing the burden

Rabbit hole!

Shared context

Sharing experience

Whops! No!

Working baseline

“That’s strange…”

“Eureka!”

20 minutes fix (where 10 was waiting)

Problem solved

The sad team

Planning Johannes Backend dev “Scrum” “Master” Johannes: You’ll create CRUD SOAP service for projects with applications Okay

Planning Johannes Backend dev “Scrum” “Master” How long will it take? Um…

Planning Backend dev 2 Johannes Backend dev “Scrum” “Master” It’s pretty easy with Hibernate Okay, 8 hours for each of Create… then !

Stand-up Designer Frontend dev Database dev Today, I will work on Create Project Johannes Backend dev Scrum master

Stand-up Designer Frontend dev Database dev No impediments Johannes Backend dev Scrum master

Behold – the uber coder

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)

ExceptionGoogle Stack overflow TweakDeployPoke

ExceptionGoogle Stack overflow TweakDeployPoke

ExceptionGoogle Stack overflow TweakDeployPoke

ExceptionGoogle Stack overflow TweakDeployPoke

Stand-up Designer Frontend dev Database dev Yesterday, I worked on Create Project Johannes Backend dev Scrum master

Stand-up Today, I will hopefully fix the exception and also do Delete Project Johannes Scrum master Designer Frontend dev Database dev Backend dev

Stand-up No impediments Johannes Scrum master Designer Frontend dev Database dev Backend dev

Stand-up Johannes Scrum master Designer Frontend dev Database dev Backend dev How could they help anway

Behold – the uber coder

Stand-up Johannes Scrum master Yesterday, I finally finished Delete after 3 days of «coding» Designer Frontend dev Database dev Backend dev I didn’t need the Delete service

Stand-up Johannes Scrum master Designer Frontend dev Database dev Backend dev I didn’t need the Delete service Yesterday, I finally finished Delete after 3 days of «coding»

STOP

Imagine you should carry 10 wooden beams Each is 3 meters and 30 kg

The fun team

Stand-up I’m ready for a new task. What’s on the board.. Johannes Scrum master

Stand-up «Let’s users administrate their projects» Johannes Scrum master

Stand-up I haven’t done any Hibernate tasks before. Who can I pair with? Johannes Scrum master I can work together with you

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)

That link doesn’t really seem relevant. Are we getting anywhere? Time to ask for help?

I think Dileepa has worked on this sort of thing before

Dileepa Yeah, just look at the Person HasMany Roles mapping

That’s it! High five!

The difference

Everyone works everywhere Knowledge is disseminated You’re never alone

Part II

Superfying with Pair programming

Pair programming styles

Debate club “No, this variable should be called fooNumber, not fooNum”, “But it’s a common abbreviation”

Dedicated driver “I’ll write the parser” “I’ll design the algorithm”

Driver-navigator “I don’t know how to solve this, so I’ll sit at the keyboard”

Ping-pong

Ingredient #1: Pair programming

Ingredient #2: Test driven development

Failing test Write code Failing test Write code Failing test

Ingredient #3: Refactoring

Failing test Write code Failing test Write code Failing test Refactor code and tests

Put together

Failing test Write code Failing test Write code Failing test

Write code Failing test Write code Failing test Refactor code and tests

Failing test Write code Failing test Write code Failing test Refactor code and tests

Demonstration (Guest starring Niruka Ruhunage)

Kata: Number to text

8192 => eight thousand one hundred and ninety two 125,017 => one hundred and twenty five thousand and seventeen

What does it feel like?

Part III

From here to there

Make sharing into a goal

Dileepa Johannes Chintaka Thomas Sergey Arunas

Dileepa Johannes Chintaka Thomas Sergey Arunas

ArunasJohannesDileepaChinthakaSergeyThomas Add new company ✓✓✓✓✓ Display contacts on map ✓✓✓ Filter contacts in list ✓✓ Authenticate user by company ✓✓✓✓ Store password securely ✓✓ Usernames with Norwegian letters are rejected ✓

ArunasJohannesDileepaChinthakaSergeyThomas Add new company ✓✓✓✓✓ Display contacts on map ✓✓✓ Filter contacts in list ✓✓ Authenticate user by company ✓✓✓✓ Store password securely ✓✓ Usernames with Norwegian letters are rejected ✓

ArunasJohannesDileepaChinthakaSergeyThomas Add new company ✓✓✓✓✓ Display contacts on map ✓✓✓ Filter contacts in list ✓✓ Authenticate user by company ✓✓✓✓ Store password securely ✓✓ Usernames with Norwegian letters are rejected ✓

Overcoming obstacles

JIRA

With a true team, no member owns more than their current task

TODODOINGDONE WAITING AWAY

You will get more done (But not in the first or second sprint)

Distance

Skype (or any voice sharing) GoToMeeting (or flexible screen sharing) Dropbox (or any file sharing)

Skill and tact

Experiment with switching patterns Try out ping-pong “Could we try it this way first?”

Building your skills

Practice with kata

Failing test Write code Failing test Write code Failing test Refactor code and tests

1.Create a dropbox account 2.Share a folder with a friend 3.Put a coding project there 4.Create a screen share session 5.Call up your friend

Fun events

Expect exhaustion

Try an experiment

Who is already pairing?

Just do it

Ask for help Don’t wait for Perfect tool Perfect oppunity

Conclusion

What

Two people at one codebase No member owns a task beyond the day Team rotates pairing

Why

“Rockstar programmer” model doesn’t scale

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)

How

Ask for help – don’t work alone Try ping pong programming for two hours Be open, share and listen

Competition: What was the blue sentence?

A team creates together what no member could do alone

You can start as soon as you get back to work

Thank you