Angular 2 Inject - Why @Inject()?

Angular 2 @Inject() is a special technique for letting Angular know that a parameter must be injected.

Stayed Informed- @Injectable() vs. @Inject()? 

Example as,

import { Inject} from '@angular/core';
import { Http, Response } from '@angular/http';

class UserService {
    users: Array<any>;

    constructor( @Inject(Http) _http: Http) {       
    }
}

Angular2 - Related Concepts

When use @Inject()?	When Use @Injectable ()?	@Injectable() vs. @Inject() ?
How to use Dependency Injection (DI) correctly in Angular 2?	Dependency Injection (DI) in Angular 2?

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Anil Singh is an author, tech blogger, and software programmer. Book writing, tech blogging is something do extra and Anil love doing it. For more detail, kindly refer to this link.. My Tech Blog - https://www.code-sample.com/ My Books - Book 1 and Book 2