Code vs Data

• Code is a generalization of data
• Example: fields vs getters
  • age vs getAge()
  • Code gives more flexibility
    • Simply return field
    • Compute it on the spot
    • Fetch from database
    • Read from file
    • Get from webservice
• Example: find item in list
• Example: smarter config files
  • Groovy
  • Ruby rake
  • Webpack
• Example: factory functions instead of classes
  • Factory design pattern
  • Dependency injection
  • Service providers