Objected Oriented Nirvana

Codegram Lightning Talks

Oriol Gual - Twitter, GitHub

Object Oriented Nirvana, WTF?

• Inspired by Perfecting OO's Small Classes and Short Methods
• Refactor a library applying the 9 restrictions defined in "Object Calisthenics" essay by Jeff Bay on The ThoughtWorks Anthology.
• Spinach's ScenarioRunner to the rescue!

1. Use only one level of indentation per method

2. Don’t use the ‘else’ keyword

3. Wrap all primitives and strings

4. Use only one dot per line

5. Don’t abbreviate names

6. Keep entities small

7. Don’t use any classes with more than two instance variables

8. Use first-class collections

9. Don’t use setters, getters, or properties

Conclusions

• Lots fo fun
• Integration tests green
• Unit tests failing: stubed too many things?
• Some design flaws arised
• Q&A