Kuidas määratleda Daggeris sõltuvuste ulatus ja milleks see on vajalik?

In Dagger, the Scope defines the lifecycle and uniqueness of created dependencies. It is necessary to manage the lifetime of objects and to avoid unnecessary creation of new instances.

For example, if a component and a dependency provider are marked with the same scope, Dagger will create a single instance of that dependency for the entire lifecycle of the component.

Scope helps to:

• Reuse objects within the same scope (e.g., session or screen).
• Control the creation and destruction of dependencies.
• Prevent memory leaks and excessive resource consumption.

An example of defining a scope:

@Scope
@Retention(RetentionPolicy.RUNTIME)
public @interface ActivityScope {}

@ActivityScope
@Component(modules = MyModule.class)
public interface MyComponent {
    // dependencies
}

Here, ActivityScope guarantees that all dependencies with this annotation will be created only once during the component's lifecycle.