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I'm still at the beginning in learning scala in addition to java and i didn't get it how is one supposed to do DI there? can or should i use an existing DI library, should it be done manually or is there another way?
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Dependency injection is a widely used design pattern that helps separate your components' behaviour from dependency resolution. Play supports both runtime dependency injection based on JSR 330 (described in this page) and compile time dependency injection in Scala.
Types of Dependency Injection The injector class injects dependencies broadly in three ways: through a constructor, through a property, or through a method. Constructor Injection: In the constructor injection, the injector supplies the service (dependency) through the client class constructor.
Dependency injection (DI) is a technique widely used in programming and well suited to Android development. By following the principles of DI, you lay the groundwork for good app architecture. Implementing dependency injection provides you with the following advantages: Reusability of code. Ease of refactoring.
Standard Java DI frameworks will usually work with Scala, but you can also use language constructs to achieve the same effect without external dependencies.
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