Writing maintainable
code
Who am I?
Why is important?
By Mayoral. License CC by-nc-sa.
By Marshall Astor. License CC by-sa.
By Steve Morel. License CC by-nd.
By Pablo Acuña. License CC by-nc-sa.
By Bambi851. License CC by-nd.
What can
we do?
  • ID - David Hernández
  • Role - Dev Manager
  • Works for - iO1
  • mail - davidhernandezruiz@gmail.com
  • Name - David Hernández
  • Job role - Dev Manager
  • Company - iO1
  • E-mail - davidhernandezruiz@gmail.com
By Helen Duffet. License CC by-nc-sa.
Single Responsibility Principle
SRP
  • A function does one thing
  • An object has an objective
By Andrew Malone. License CC by.
Don't repeat yourself
DRY
Keep it simple, [stupid]
KISS
Better names



+ Simpler functions
If there is a comment in a function



the function can be simplified
If there is a comment above a variable



The variable name can be improved
Code evolves


Comments don't
If there are a lot of comments...
By Ines Saraiva. License CC by-nc.
The devil is in the details




By Malzor905. License CC by-nc.
  • Camel case VS Hungarian Notation
  • Tabs VS Spaces
  • Windows VS Linux
  • Use the standards
  • Agreements with the team
  • Take decissions
Last advices
Refactor
"Always leave the campground better than you find it"
- Boy scout rule
Testing
Version control
Tools
Code Sniffer
Continuous integration
Sonar
Metrics as a guide,
not as a rule
Overview
Questions
?
Recommended readings

License of the CC by-nc

davidhernandez.info/slides


DrupalCamp website
Thanks!