Agila workshopövningar

Länkar till övningar som används för att illustrera agila principer:

http://tastycupcakes.com/

http://www.agilecoach.net/

JavaScript Resources

jQuery: http://api.jquery.com/

DOM: https://developer.mozilla.org/en/DOM

Öredev 2010 Dag 1 (tisdag) anteckningar

Koans, Katas, Oh my by Cory Foy

Corys slides and links can be found here: http://blog.coryfoy.com/2010/11/koans-and-katas-oh-my-slides-and-links-from-my-%C3%B8redev-2010-session/

Practice outside production is essential

Write dreyfus number 1-5 on head of others in conversation

Shu Ha Ri

Koans is a mindset, the actual excercises are katas.

Katas: You know solution, practice solving them

Code Kata origin: Dave Thomas

Katacasts

KataFizzBuzz

http://codingdojo.org/cgi-bin/wiki.pl?KataFizzBuzz

TDD as you meant it (gojko.net)

Only refactor out production code

Code retreat - C0d3r3tr3at

Game Of Life

How do we try out stuff otherwise? We introduce in in our production code! Is that good?

Cory Haynes – Has done a lot of Javascript testing lately.

Scala Thinking by Ted Neward

Functional

• Order Does Not Matter à No notion of sequence like

·        i=1;

·        i =i+2;

• There is no shared state à always same return from function – no side effects.
• But: Sometimes order matter (fly before explodes)
• Scala says: There’s goodness in both functional and OO world.

What the outcome of combo of F and OO is not yet known, nobody knows!

Scala is impure FL, allows

-         functions as first-class values

-         strongly typed, type-inferenced

-         immutable values

-         expressions-not-statements

-         typles, lists                                        

-         recursion

-         pattern-matching

-         currying, partial-application of functions

lambda calculus

f(x,y) = x + y

f(x,y,op) = x (op) y

add (x, y) = x + y

inc = add 1                          (returns first class value function that takes one value)

Function that takes more than 2 parameters are too long – compare to Bob J

Currying à Pipelining

Val convertToInt = { x:String => x.toInt }

Val doubleIt = { x:Int => x * 2 }

Val sqrtIt = { x:Double => Mat.sqrt(x) }

Val pipeline = convertToInt andThen doubleIt andThen int2double andThen sqrtIt

RUN:

Scalac person.scala

Java –classpath ;. App

Javap Person                       (Shows java-code)

object App {

Using eclipse? ScalaIDE, http://www.scala-ide.org/

Unit testing? Yepp, but maybe Java TDD? Make unit testing first compile scala? Would be cool to integrate!

Using from Java?

Problems

http://aperiodic.net/phil/scala/s-99

http://langref.org/scala/solved

lift framework

Tomorrow: Go to Java Bytecode!!!

Anything is better than java.

Why use scala: Unless you want to write tomorrows legacy code today.

Katas etc

Katas

• FizzBuzz: http://codingdojo.org/cgi-bin/wiki.pl?KataFizzBuzz
• String calculator: http://osherove.com/tdd-kata-1
• Game Of Life: http://coderetreat.org/gol
• Prime Numbers: http://katas.softwarecraftsmanship.org/?p=71
• Also see http://blog.coryfoy.com/2010/11/koans-and-katas-oh-my-slides-and-links-from-my-%C3%B8redev-2010-session/
• KataCasts – http://www.katacasts.com/
• Pragmatic Dave Thomas’s CodeKatas site – http://codekata.pragprog.com/
• Code retreat: http://www.coderetreat.com/how-it-works.html

JavaScript
Video of Calculator Kata, in JavaScript, using Screw.Unit. IDE: RubyMine
http://anotherdave.wordpress.com/2010/01/13/calculator-tdd-kata-in-javascript/
Video of FizzBuzz using BDD framework Jasmine
http://www.youtube.com/watch?v=eqDfhdYK_wk

Blogs
Blog om katas etc
http://codekata.pragprog.com/2007/01/kata_kumite_koa.html

Övrigt
Kolla GoogleTechTalks på youtube

Planering

Det här är en sida om varför och hur man planerar.

Först ut: En sammanfattande video efter maildiskussion på Agile Sweden som kommer fram till att planera gör man i första hand för att bygga lagkänsla och man gör det så enkelt som möjligt.

http://www.youtube.com/watch?v=7JrJL7hHDmI

java-ee-spike-kata

Johannes Brodwall har bloggat om en java-ee-spike-kata:
http://johannesbrodwall.com/2010/05/02/six-ideas-that-improve-your-software-design/

Hela java-ee-spike-kata i "obruten form" finns här: http://jhannes.blip.tv/file/3487566/

Tips:

•  pom:en behövs för att komma igång (från github, länk ovan), importera i eclipse och sätt igång.
• log4j.properties under test/resources behövs för att få ut exceptions från jetty m.fl.
• Ha org.mockito.Mockito, org.fest.assertions.Assertions som Type favorite i eclipse, se Preferences->Java->Editor->Content assist->Favorites->New Type.

log4j.rootLogger=warn, A


log4j.appender.A=org.apache.log4j.ConsoleAppender
log4j.appender.A.layout=org.apache.log4j.PatternLayout
log4j.appender.A.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

Agila länkar

Har lite svårt att hitta något bra sätt att komma ihåg olika länkar som kan vara kul att återkomma till, så det får bli såhär tills vidare:

Om AI Retrospective: Always look at the bright side of life...
http://ellnestam.wordpress.com/2009/11/12/an-ai-retrospective/