using advanced RxJs suscriber features

example-rxjs-import.ts

// You must import this or the actual feature you require form rxjs to use things like delay(), map(), retry()
import 'rxjs/Rx';

...
export class Test {
  constructor(private _http:Http) {
    _http.get('http://localhost:8080/competitions')
      .map(res => res.json()) // map to json
      .delay(2000) // atrificially delay the 
      .retry(3) // attempt to retry x number of times
      .subscribe(
        ...
      );
  }
}