Angular Video Series Part 17 || Dependency Injection In Angular Tutorial 2021

Angular Video Series Part 17 || Dependency Injection In Angular Tutorial 2021
Welcome To My Channel Slobodan Gajic

Dependencies are services or objects that a class needs to perform its function. Dependency injection, or DI, is a design pattern in which a class requests dependencies from external sources rather than creating them.

Angular's Dependency injection framework provides dependencies to a class upon instantiation. You can use Angular DI to increase flexibility and modularity in your applications.

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0:00 Intro
0:30 Create a service
1:25 Injecting a service
2:55 Outro

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[gattorr]

Radio sam godinu dana sa dvoijcom angular devs. Nikad nisu stavljali servise u providers u app.module. Vidim na video da ti stavljas, razlog?

[manishboge]

Thanks for sharing the video.
And can you suggest is it mandatory that a service class should also be mentioned in providers array in root module even though providedIn is set as root for that service - which means a service with providedIn as root will have application scope.

[YouCantGetBrokeByGiving]

What if the constructor of my app is already used by something else?