NestJS #11 - Dependency Injection | Standard Providers | Class as Dependency | (Hindi)
This video explains the Standard Provider - Class as Dependency an essential topic of Dependency Injection. We will see the @Injectable decorator, Constructor injection, and ways of providing the Dependency using Injection tokens which also includes the use of the @Inject Decorator and @Optional Decorator.
This video also discusses the different ways of defining the providers using "useClass", "useExisting" and Same name syntax.
Topics covered
✱ Standard Providers
✱ @Injectable decorator
✱ Constructor Injection
✱ @Inject decorator
✱ @Optional decorator
✱ useClass
✱ useExisting
▬▬▬▬▬▬ 🔗 Links ▬▬▬▬▬▬
► GitHub (Source code): https://bit.ly/3NPfUu0
► NestJS - Dependency Injection Complete Guide : • NestJS #10 - Dependency Injection | IOC Co...
▬▬▬▬▬▬ 📚 CHAPTERS ▬▬▬▬▬▬
00:00 - Introduction
00:26 - @Injectable Decorator - Class Provider
02:37 - useClass
03:50 - Constructor Injection
05:31 - Same name Provider
06:10 - @Inject Decorator
07:25 - Cannot resolve dependency error
08:18 - @Optional Decorator
09:00 - When to use "useClass"
13:05 - useExisting & Caching
14:55 - useExisting vs useClass
▬▬▬▬▬▬ 🔖 RECOMMENDED COURSES ▬▬▬▬▬▬
🎬 Angular In-Depth (Hindi) - https://bit.ly/34nHrBh
🎬 Angular Architecture - • 1. Angular Architecture | Angular In Depth...
🎬 NestJS Framework | Backend Development (Hindi) - https://bit.ly/3titPk3
🎬 RxJS - The Practical Guide (Hindi) - https://bit.ly/3GBcXsf
🎬 RxJS - Promise vs Observable | A depth comparison - • 5. RXJS - Promise vs Observable | A depth ...
🎬 RxJS - Introduction to Reactive programming - • 1. RXJS - Introduction to Reactive program...
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