What is the role of Scope within Dagger and why is it important for dependency management?

Scope in Dagger is an annotation that defines the lifecycle and scope of dependencies being created. It is important for dependency management because:

• Object lifetime control: allows creating singletons within a specific component (e.g., ActivityScope, Singleton), so objects are not recreated on each request.
• Resource optimization: reusing objects reduces creation and initialization costs.
• Dependency isolation: different components can have their own scopes, preventing unwanted sharing of objects.

Example:

@Scope
@Retention(AnnotationRetention.RUNTIME)
annotation class ActivityScope

@ActivityScope
@Component(modules = [SomeModule::class])
interface ActivityComponent {
    fun inject(activity: SomeActivity)
}

Here, objects annotated with @ActivityScope will live as long as the Activity component, helping to manage dependency lifetimes.