{ clean code } - finding marbles · clean code = code usability bildquelle:

{ Clean Code }Lesbar, wartbar, erweiterbar

Uncle Bob wants you to write Clean Code*

Buch: http://www.amazon.com/Clean-Code-Handbook-Software-Craftsmanship/dp/0132350882Videos: http://cleancoders.com/

* so does everyone who’ll ever have to work with your code

Fragile

Unreadable

Clean Code = Code Usability

Bildquelle: http://www.sxc.hu/photo/785502

What’s in a name?

Marker: You’re naming something

Bildquelle: http://www.sxc.hu/photo/1438328/

Reveal

IntentBildquelle: http://www.sxc.hu/photo/626209

Nice summary of the “Naming” chapter: http://www.itiseezee.com/?p=83

Reveal

IntentBildquelle: http://www.sxc.hu/photo/626209

Marker: You want to comment

/* No comments! */

Reveal

IntentBildquelle: http://www.sxc.hu/photo/626209

Marker: You’re writing a condition

if (isCondition())

Don’t make me think

Marker: You’re passing a Boolean into a function

http://www.sxc.hu/photo/365439

Pfadfinder-Regel

Marker: You see ugly code

Bildquelle: http://www.sxc.hu/photo/1438328/ Bild

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DRY

Marker: Duplication

Bildquelle: http://www.eurobricks.com/forum/index.php?showtopic=18914&st=25

Extract method

Marker: Long function || many indentations

Bildquelle: http://www.flickr.com/photos/cives-expat/9512089306/

Bildquelle: http://codeguide.hu/2013/08/08/tesztvezerelt-fejlesztes-tdd/

Marker: You’re about to write new code

● Better design● Safe refactoring● Tests as

documentation

Code Katas

Bildquelle: http://www.sxc.hu/photo/1438328/

http://codersdojo.org/

Bildquelle: http://www.flickr.com/photos/the-consortium/5301701486/Code with other people!

Clean Code Developerhttp://www.clean-code-developer.de/

SoftwerkskammerTreffen jeden 2. Mittwoch im Monat

http://softwerkskammer.org

Questions?

Bildquelle: http://www.sxc.hu/photo/1438328/

corinna@finding-marbles.com@findingmarbles

The End

Tell, don’t ask

Tell, don’t ask

Bildquelle: http://martinfowler.com/bliki/TellDontAsk.html

● Bundle logic & data

Law of Demeter

Marker: $this->getDog()->getLegs()->posX

Bildquelle: http://www.sxc.hu/photo/558572