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Quelle: http://en.wikipedia.org/wiki/File:Skull_and_brain_normal_human.svg
CAN YOU KATA?
Sebastian Sanitz - Marko Schulz - Bernd Schiffer
Karateka: Benno Schöfl
Katas
let you
internalize
basic steps,
so you will use them
subconsciously
programming
while
Slides on http://is.gd/cankata
Freitag, 19. Oktober 12
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ܗ Kata
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Katas
let you
internalize
basic steps,
so you will use them
subconsciously
programming
while
Quelle: http://en.wikipedia.org/wiki/File:Skull_and_brain_normal_human.svg
Freitag, 19. Oktober 12
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Learning
by
Repetition
Quelle: failblog.org
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Gitarre
Music
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Dance
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Martial
arts
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ܗ Kata
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Quelle: Bild von Albrecht Pflüger
1. Kata
in
Shōtōkan
karate
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ܗ Kata
Benno Schöfl
Karateka for 35 years
5. Dan
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Programming
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Tasks
Small
focused
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path
Choose a
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snapshot
single
run
only
small
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do Katas
Why ?
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Quelle: http://de.wikipedia.org/w/index.php?title=Datei:Kapitolinischer_Pythagoras_adjusted.jpg & http://en.wikipedia.org/wiki/File:Pythagorean_graphic.svg
a²+b²=c²
Pythagorean theorem
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Reflection
Self-
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Constraints
and
Isolation
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Memorization
Muscel
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And now, a little bit of
coding
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ROMAN NUMBERS
• Decode roman Numbers
DCXXXIX => 639
• CoffeeScript, Jasmine,
CodersDojo.com
• Test driven development:
Red, Green, Refactor
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What
to
pay
attention to
when training a
Kata?
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Quelle: http://www.flickr.com/photos/dailyjoe/441020930/sizes/l/
Take
time
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and
Repeat
Repeat
and
Repeat
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Feedback
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Try
alternatives
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Quelle: http://www.flickr.com/photos/pgoyette/92358434/sizes/l/
make it work,
make it fast
make it right,
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Coderetreats
honing the craft together
full day
together with other professionals
intensive practice
http://www.it-agile.de/code-retreat.html
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Quelle:http://www.flickr.com/photos/14922165@N00/1022807511
http://coderetreat.org/
http://globalday.coderetreat.org/
Global Day of Coderetreat
December 8th, 2012
In D announced til now: Hamburg, Düsseldorf,
Köln, Frankfurt, Nürnberg, München
http://www.it-agile.de/code-retreat.html
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• Slides on http://is.gd/cankata
• http://codekata.com
• http://katas.softwarecraftsmanship.org == http://katacasts.com
• http://www.codingdojo.org
• http://codingkata.org
• http://stackoverflow.com/questions/1737427/assignments-i-e-code-kata-for-coding-dojos
• http://www.javascriptkata.com/
• http://www.rubyquiz.com/
• http://www.programming-challenges.com/
• http://sites.google.com/site/tddproblems/
• http://codersdojo.com/
• Programming tasks from http://rosettacode.org
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Quelle: http://en.wikipedia.org/wiki/File:Skull_and_brain_normal_human.svg
CAN YOU KATA?
Sebastian Sanitz - Marko Schulz - Bernd Schiffer
Katas
let you
internalize
basic steps,
so you will use them
subconsciously
programming
while
Slides on http://is.gd/cankata
Freitag, 19. Oktober 12
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Quelle: http://en.wikipedia.org/wiki/File:Skull_and_brain_normal_human.svg
CAN YOU KATA?
Sebastian Sanitz - Marko Schulz - Bernd Schiffer
Slides on http://is.gd/cankata
Freitag, 19. Oktober 12
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Prime
factorization
Split an integer into its
prime factors
Examples
4 ➔ 2,2
42 ➔ 2,3,7
String-Calculator
1. Sum the numbers in a
string
e.g.: „1,2,3“ ➔ 6
2. Delimiter may be comma
or newline
e.g.: „1,3\n5“ ➔ 9
3. Different delimiter can
be specified with a /
/ at
the beginning
e.g. „/
/;\n2;4;8“ ➔ 14
Text munger
Mutate every word,
so the first and last chars
stays the same and inner
chars are in reversed
order
Examples
Test
➔ Tset
I love you
➔ I lvoe you
Extreme Programming
rules!
➔ Emertxe Pnimmargorg
relus!
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