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?

I hope you are enjoying with this post! Please share with you friends. Thank you!!