Personal kaizen

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Personal Kaizen - how to improve your daily work as developer This talks is a personal view on tools, resources and techniques which can help you becoming a better developer. Hardy explains what ideas from books like "My Job Went to India" (Chad Fowler), "The Pragmatic Programmer" (Andrew Hunt) and "Pragmattic Thinking and Learning" (Andrew Hunt) mean to him and how he tries to become a better developer every day by applying some of these ideas. Becoming a better developer, however, requires also to understand our own software better. Only if we understand ourselves we are able to learn effectively and tap into otherwise dormant resources. In this context the Dreyfus model of skill acquisition is explained as well as the different operational modes of our brain (linear vs rich). Hardy Ferentschik, Redhat

Technology Design

Personal
Kaizen

hardy@hibernate.org
Tuesday, October 25, 11

About me
• Hibernate team member w/ focus on Validator and Search
• +10 years experience in software development
➡ Worked for small (10), medium (100) and big (3000+) companies
➡ Everything from Team Lead to System Administrator
➡ Developed in C++, Perl, Ruby, ... and of course Java
• Want to be a Software Craftsman

Tuesday, October 25, 11

• “kai” = change/make better
• "zen" = good

Tuesday, October 25, 11

• “kai” = change/make better
• "zen" = good

• “kaizen” = (continuous) improvement

Tuesday, October 25, 11

Need to understand bits & bytes and ourselves!
Tuesday, October 25, 11

Dreyfus Model
Expert

Proﬁcient

Competent

Advanced Beginner

Novice

Tuesday, October 25, 11

Dreyfus Model
Expert

Proﬁcient

10 years Competent

Advanced Beginner

Novice

Tuesday, October 25, 11

Practice Practice Practice

Tuesday, October 25, 11

Know your basic tools

Tuesday, October 25, 11

Resurrect deleted files

Tuesday, October 25, 11

Resurrect deleted files

$ git rev-list -n 1 HEAD -- foo.txt

Tuesday, October 25, 11

Resurrect deleted files

$ git rev-list -n 1 HEAD -- foo.txt

b193eecf895e45b4f875eb4e6030f2c2e9fac897

Tuesday, October 25, 11

Resurrect deleted files

$ git rev-list -n 1 HEAD -- foo.txt

b193eecf895e45b4f875eb4e6030f2c2e9fac897

$ git checkout b193eecf895e45^ -- foo.txt

Tuesday, October 25, 11

Know your bash ;-)

Tuesday, October 25, 11

Problem

Find all jar files in your JBoss installation
containing a given class

Tuesday, October 25, 11

Possible solution

for i in `find . -name "*.jar"`;
do count=$(jar -tvf $i | grep -c "MyClass") ;
if [ "$count" -gt "0" ]; then echo "Match in $i" ;
fi;
done

Tuesday, October 25, 11

Possible solution
function findClass()
{
for i in `find $1 -name "*.jar"`;
do count=$(jar -tvf $i | grep -c "$2") ;
if [ "$count" -gt "0" ]; then echo "Match in $i" ;
fi;
done
}

Tuesday, October 25, 11

Keep solutions log!

Tuesday, October 25, 11

Know your resources

• refcardz.dzone.com
• stackoverflow.com

Tuesday, October 25, 11

From Novice to Expert
Part of Relevant
System Focus Intuition
Expert
Proﬁcient
Competent
Advanced Beginner
Novice
Detached Considers Rules
Observer Everything
Tuesday, October 25, 11

L + R modes

shared bus

CPU #1

linear, slow non-linear, fast

Tuesday, October 25, 11

L and R characteristics
• Verbal
• Analytic
• Symbolic
• Abstract
• Rational
• Logical

L

Tuesday, October 25, 11

L and R characteristics
• Verbal • Non-verbal
• Analytic • Synthetic
• Symbolic • Concrete
• Abstract • Analogic
• Rational • Non-rational
• Logical • Intuitive

L R
Tuesday, October 25, 11

Capture insight 24x7

• Remember the Milk
• Mindmaps
• Pen and notepad

Tuesday, October 25, 11

Feed the R mode

• Try to find and use metaphors
• Free-Form Journaling
➡ Write Drunk, Revise Sober
➡ Morning Pages Technique
➡ Fieldstone method
• Change your routines
➡ Change your neural wiring
• Go for a walk!

Tuesday, October 25, 11

Friedrich August Kekule

Benzene

Tuesday, October 25, 11

Wrapup

hardy@hibernate.org
Tuesday, October 25, 11

Want to know more?

• Pragmatic Thinking & Learning, Andy Hunt
• Practices of an Agile Developer, Venkat Subramaniam
• My Job Went to India, Chad Fowler
• Software Craftsmanship, Pete McBreen

hardy@hibernate.org
Tuesday, October 25, 11

Links

• http://refcardz.dzone.com
• http://stackoverflow.com
• http://www.javaspecialists.eu
• http://www.rememberthemilk.com
• http://www.thoughtworks.com/radar

hardy@hibernate.org
Tuesday, October 25, 11

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Personal kaizen

1. Personal Kaizen hardy@hibernate.org Tuesday, October 25, 11

2. About me • Hibernate team member w/ focus on Validator and Search • +10 years experience in software development ➡ Worked for small (10), medium (100) and big (3000+) companies ➡ Everything from Team Lead to System Administrator ➡ Developed in C++, Perl, Ruby, ... and of course Java • Want to be a Software Craftsman Tuesday, October 25, 11

3. Tuesday, October 25, 11

4. Tuesday, October 25, 11

5. • “kai” = change/make better • "zen" = good Tuesday, October 25, 11

6. • “kai” = change/make better • "zen" = good • “kaizen” = (continuous) improvement Tuesday, October 25, 11

7. Tuesday, October 25, 11

8. Tuesday, October 25, 11

9. Need to understand bits & bytes and ourselves! Tuesday, October 25, 11

10. Dreyfus Model Expert Proﬁcient Competent Advanced Beginner Novice Tuesday, October 25, 11

11. Dreyfus Model Expert Proﬁcient 10 years Competent Advanced Beginner Novice Tuesday, October 25, 11

12. Dreyfus Model Expert Proﬁcient 10 years Competent Advanced Beginner Novice Tuesday, October 25, 11

13. Dreyfus Model Expert Proﬁcient 10 years Competent Advanced Beginner Novice Tuesday, October 25, 11

14. Practice Practice Practice Tuesday, October 25, 11

15. Tuesday, October 25, 11

16. Know your basic tools Tuesday, October 25, 11

17. Resurrect deleted files Tuesday, October 25, 11

18. Resurrect deleted files $ git rev-list -n 1 HEAD -- foo.txt Tuesday, October 25, 11

19. Resurrect deleted files $ git rev-list -n 1 HEAD -- foo.txt b193eecf895e45b4f875eb4e6030f2c2e9fac897 Tuesday, October 25, 11

20. Resurrect deleted files $ git rev-list -n 1 HEAD -- foo.txt b193eecf895e45b4f875eb4e6030f2c2e9fac897 $ git checkout b193eecf895e45^ -- foo.txt Tuesday, October 25, 11

21. Tuesday, October 25, 11

22. Know your bash ;-) Tuesday, October 25, 11

23. Problem Find all jar files in your JBoss installation containing a given class Tuesday, October 25, 11

24. Possible solution for i in `find . -name "*.jar"`; do count=$(jar -tvf $i | grep -c "MyClass") ; if [ "$count" -gt "0" ]; then echo "Match in $i" ; fi; done Tuesday, October 25, 11

25. Possible solution function findClass() { for i in `find $1 -name "*.jar"`; do count=$(jar -tvf $i | grep -c "$2") ; if [ "$count" -gt "0" ]; then echo "Match in $i" ; fi; done } Tuesday, October 25, 11

26. Keep solutions log! Tuesday, October 25, 11

27. Know your resources • refcardz.dzone.com • stackoverflow.com Tuesday, October 25, 11

28. Tuesday, October 25, 11

29. Tuesday, October 25, 11

30. Tuesday, October 25, 11

31. From Novice to Expert Part of Relevant System Focus Intuition Expert Proﬁcient Competent Advanced Beginner Novice Detached Considers Rules Observer Everything Tuesday, October 25, 11

32. L + R modes shared bus CPU #1 linear, slow non-linear, fast Tuesday, October 25, 11

33. L and R characteristics • Verbal • Analytic • Symbolic • Abstract • Rational • Logical L Tuesday, October 25, 11

34. L and R characteristics • Verbal • Non-verbal • Analytic • Synthetic • Symbolic • Concrete • Abstract • Analogic • Rational • Non-rational • Logical • Intuitive L R Tuesday, October 25, 11

35. Capture insight 24x7 • Remember the Milk • Mindmaps • Pen and notepad Tuesday, October 25, 11

36. Feed the R mode • Try to find and use metaphors • Free-Form Journaling ➡ Write Drunk, Revise Sober ➡ Morning Pages Technique ➡ Fieldstone method • Change your routines ➡ Change your neural wiring • Go for a walk! Tuesday, October 25, 11

37. Feed the R mode • Try to find and use metaphors • Free-Form Journaling ➡ Write Drunk, Revise Sober ➡ Morning Pages Technique ➡ Fieldstone method • Change your routines ➡ Change your neural wiring • Go for a walk! Tuesday, October 25, 11

38. Tuesday, October 25, 11

39. Friedrich August Kekule Benzene Tuesday, October 25, 11

40. Tuesday, October 25, 11

41. Thomas Edison Tuesday, October 25, 11

42. Thomas Edison Tuesday, October 25, 11

43. Wrapup hardy@hibernate.org Tuesday, October 25, 11

44. Q+A Tuesday, October 25, 11

45. Want to know more? • Pragmatic Thinking & Learning, Andy Hunt • Practices of an Agile Developer, Venkat Subramaniam • My Job Went to India, Chad Fowler • Software Craftsmanship, Pete McBreen hardy@hibernate.org Tuesday, October 25, 11

46. Links • http://refcardz.dzone.com • http://stackoverflow.com • http://www.javaspecialists.eu • http://www.rememberthemilk.com • http://www.thoughtworks.com/radar hardy@hibernate.org Tuesday, October 25, 11

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