JUGChennai Global Day of Coderetreat 2013 at Software AG, Chennai.

1. Coderetreat
a day like no other
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December 14, 2013

2. 2200 Developers
160 Locations
20 Time zones
6 Continents
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3. Globe Sponsor
JetBrains tools help professional developers simplify their
challenging tasks, automate the routine ones and adopt best
development practices. We make tools for .NET, Java, PHP,
HTML, JavaScript, Ruby, Python, Objective-C developers, as
well as team collaboration tools.
www.jetbrains.com
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4. Globe Sponsor
A software company and community of passionate individuals
whose purpose is to revolutionise software creation and
delivery, while advocating for positive social change.
www.thoughtworks.com
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5. Globe Sponsor
GitHub is the best place to share code with friends, coworkers, classmates, and complete strangers. Over four
million people use GitHub to build amazing things together.
github.com
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6. Continent Sponsors
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7. Corey Haines

8. Software development is a craft and as
practitioners we need to understand and
deliberately work on expanding our skills so we
can deliver what our clients need, when they
need it and in a sustainable way.
http://leanmagazine.net/lean/software-craftsmanship/

11. NO PRESSURE
feel free to
experiment

12. NO
PRESSURE
do not
complete the
task but
master it

13. FORMAT of the
DAY
from 10:00 to13:00
MORNING
from 13:00 to14:00
LUNCH
from 14:00 to17:00
AFTERNOON

14. FORMAT of
the DAY

15. CODING

16. 1. PASSES ALL ITS TESTS
2. CLEARLY EXPRESSES INTENT
3. CONTAINS NO DUPLICATION
4. HAS NO SUPERFLUOUS PARTS
SIMPLE
DESIGN

20. “DELETE”
YOUR
CODE
AFTER EACH
SESSION

21. WE LOVE
TO SEE
MULTIPLE
PROGRAMMING
LANGUAGES

22. VARIATIONS
•
•
•
•
•
•
AVOID TO USE PRIMITIVES
AVOID TO USE ELSE IN
CONDITIONS
EXTREME TELL DO NOT ASK
MAX OF 5 LINES OF CODE PER
METHOD
PING PONG PROGRAMMING
TRY TO USE DIFFERENT
CONCEPTS (GRID GAME
CELL...) AS A CENTER

23. VARIATIONS
•
•
•
•
•
•
AVOID TO USE CONDITIONS
TRY TO GUESS THE RESULT
OF TESTS
DO NOT USE ARRAYS
USE ONLY INTERACTION
BASED TESTS
USE ONLY STATE BASED
TESTS
ALL METHODS RETURNS VOID

24. VARIATIONS
•
•
•
•
•
DO NOT TALK WITH YOUR PAIR
TDD AS IF YOU MEANT IT
DO NOT USE THE MOUSE
ONLY USE AUTOMATIC
REFACTORINGS
OCP STYLE

26. THE GAME OF
LIFE
IS A TWO
DIMENSIONAL
GRID OF
SQUARE CELLS
EACH OF WHICH
IS IN ONE OF
TWO POSSIBLE
STATES ALIVE
OR DEAD

27. AT EACH STEP
IN TIME EVERY
CELL
INTERACTS
WITH ITS 8
NEIGHBORS
FOLLOWING 3
RULES

28. 1. ANY LIVE CELL WITH FEWER
THAN 2 LIVE NEIGHBORS DIES OF
LONELINESS

29. 2. ANY LIVE CELL WITH MORE
THAN 3 LIVE NEIGHBORS DIES OF
OVERCROWDING

30. 3. ANY DEAD CELL WITH EXACTLY
3 LIVE NEIGHBORS COMES TO
LIFE OF WARMTH

31. LIFE EVOLUTION
1
2
3

32. LIFE EVOLUTION
1
2
3

33. LIFE EVOLUTION
1
2
3

34. May the source be with you
Happy coding!