http-observables-dum-dum.2.ts

import { Component, OnInit } from '@angular/core';
import { UserService } from './user.service';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {

  constructor(private userService: UserService) { }

  ngOnInit() {
      this.userService.getUsers().subscribe(
        users => console.log('users', users), 
        error => console.error('error', error));
  }

}