autowiring.md

Defining Services Dependencies Automatically (Autowiring) 自动装配

https://symfony.com/doc/3.4/service_container/autowiring.html https://symfony.com/doc/3.4/service_container/3.3-di-changes.html

• service.yml

    services:
        _defaults:
            autowire: true
            autoconfigure: true
            public: false
  

classes are automatically registered as services and configured to be autowired. This means you can use them immediately without any configuration.

The autowiring system looks for a service whose id exactly matches the type-hint.