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what is DI (Dependency Injection ) and how an object or function can get a hold of its dependencies?


DI or Dependency Injection is a software design pattern that deals with how code gets hold of its dependencies. In order to retrieve elements of the application which is required to be configured when module gets loaded , the operation “config” uses dependency injection.

These are the ways that object uses to hold of its dependencies

☛ Typically using the new operator, dependency can be created
☛ By referring to a global variable, dependency can be looked up
☛ Dependency can be passed into where it is required

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