constructor(private messageService : MessageService) { }
getHeroes() : Observable<Hero[]> {
+ this.messageService.add('HeroService: fetching heroes...');
return of(HEROES);
}
+
+ getHero(id: number): Observable<Hero> {
+ this.messageService.add(`HeroService: fetched hero id=${id}`);
+ return of(HEROES.find(hero => hero.id === id));
+ }
}