Inversion_of_control.md

Inversion Of Control

Why

Reduce dependency, in my own experience, u’be fucked up when u need to change class bug it used in everywhere, such when model change or SMS service change.

Laravel solution

  • Interface binding - Register container in service provider.
  • $app->make('name')
  • Dependency injection
    • Instance as parameter instead of init in class.
  • using constants
    • The reason this is bad I think it’s becuz it still has dependency, can use only this value for this class.
  • registered in construct
    • Have to change class code if need to modify, not good operate if this class to be a library, I guess.
laravel