Static == evil ?

The idea behind this slides is show why static functions all over the place may become a problem in the future for testing, maintainability and decoupling of any software project.

Special thanks to http://barista-v.com

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Transcript

1. STATIC == EVIL ? BARISTA DAY (static == class functions)
2. SongsView SongsController SongsRepository (with static things) Have Used by https://dribbble.com/shots/2352472-MD-Music- quick-listen-Concept/attachments/449945 Use case Song Player
3. Have Used What could go wrong ? Code
4. Try to unit test it Is testing SongsRepository behaviour too… Run slowly No control over posible failures Why it fails? O_O
5. So let’s remove static and add as dependency “Inversion of responsibility”
6. Test without static… Control dependencies for tests Dont test dependencies Check what you want to check Run fast!!!!
7. Avoid mesh code Improve testing Inverse Responsibility Static is faster to write but harder horrible to maintain Less static -> less evil inside (static == class functions)