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Angular Enterprise Framework Tutorial• 6 min read
Dependency Injection & Injectable Services
Structure business logic and HTTP calls into reusable singleton services using Angular's hierarchical Dependency Injection system.
The @Injectable({ providedIn: "root" }) Pattern
Services decorated with providedIn: "root" are created as singletons available across the entire application.
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Test Yourself With Exercise
Which decorator marks a TypeScript class as a dependency injection service in Angular?