2bd9946bda
* example(dart/toh-4,5): getHeroesSlowly() to return getHeroes() Have `getHeroesSlowly()` delay and then return the value of `getHeroes()`. This makes it easier for user’s performing the tutorial to keep this slower method as they evolve toh-5 into toh-6. * example(ts/toh-4,5): getHeroesSlowly() to return getHeroes() Have `getHeroesSlowly()` delay and then return the value of `getHeroes()`. This makes it easier for user’s performing the tutorial to keep this slower method as they evolve toh-5 into toh-6.
26 lines
628 B
TypeScript
26 lines
628 B
TypeScript
// #docplaster
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// #docregion
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import { Hero } from './hero';
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import { HEROES } from './mock-heroes';
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import { Injectable } from '@angular/core';
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@Injectable()
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export class HeroService {
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getHeroes(): Promise<Hero[]> {
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return Promise.resolve(HEROES);
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}
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getHeroesSlowly(): Promise<Hero[]> {
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return new Promise<Hero[]>(resolve =>
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setTimeout(resolve, 2000)) // delay 2 seconds
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.then(() => this.getHeroes());
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}
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// #docregion getHero
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getHero(id: number): Promise<Hero> {
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return this.getHeroes()
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.then(heroes => heroes.find(hero => hero.id === id));
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}
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// #enddocregion getHero
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}
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