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Reactive Thinking with Signals, Resource API, ...
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Manfred Steyer
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May 18, 2025
Programming
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Reactive Thinking with Signals, Resource API, and httpResource @Devm.io Angular 20 Launch Party
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Transcript
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten Reactive Thinking
with Signals, Resource API, and httpResource ANGULARarchitects.io
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten Application Code
as a Script
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten Marble Run
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 5 1)
Signal Graph 2) Resource API 3) DEMO 4) Signal Graph in Demo 5) Live Coding Agenda
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 6 About
Me (Remote) Angular Workshops and Consulting Google Developer Expert for Angular Blog, Books, Articles, and Talks about Angular Manfred Steyer, ANGULARarchitects.io
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 7 Reactive
Graph
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 8 Building
Your Reactive Graph desserts = signal<Dessert[]>([]); ratings = signal<DessertIdToRatingMap>({}); ratedDesserts = computed(() => this.toRated(this.desserts(), this.ratings()));
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 9 Building
Your Reactive Graph desserts = signal<Dessert[]>([]); ratings = signal<DessertIdToRatingMap>({}); ratedDesserts = computed(() => this.toRated(this.desserts(), this.ratings()));
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten desserts =
signal<Dessert[]>([]); ratings = signal<DessertIdToRatingMap>({}); ratedDesserts = computed(() => this.toRated(this.desserts(), this.ratings())); 10 Building Your Reactive Graph originalName = signal(''); englishName = signal(''); Load Desserts
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 11 Resource
API
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 12 Resource
API dessertsResource = resource({ request: this.dessertsCriteria, loader: (param) => { return this.#dessertService.findPromise(param.request); } });
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 13 Resource
API dessertsResource = resource({ request: this.dessertsCriteria, loader: (param) => { return this.#dessertService.findPromise(param.request); } }); dessertsCriteria = computed(() => ({ originalName: this.originalName(), englishName: this.englishName(), })); desserts = this.dessertsResource.value; ratedDesserts = computed(() => this.toRated(this.desserts, …));
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 14 httpResource
dessertsResource = httpResource(() => ({ url: 'http://demo.angulararchitects.io/...', params: { originalName: this.originalName(), englishName: this.englishName(), } })); desserts = this.dessertsResource.value; ratedDesserts = computed(() => this.toRated(this.desserts, …));
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 15 DEMO
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 16 Reactive
Graph in Our App
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 17 canvas
(view child) style levelKey animation levelResource tilesMapResource tilesResource tilesMapProgress render (effect) levelOverview Resource
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten Effect: Connecting
Reactive and Imperative World
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 20 DEMO
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 21 1)
Build a reactive graph 1) Computed: Sync Derivation/ Readonly 2) Linked Signal: Sync Derivation/ Writable 3) Resource API: Async Derivation/ Writable 2) httpResource: fetching data within the graph 3) Service: creating httpResource Conclusion
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten Marble Run
• Textmasterformat bearbeiten • Zweite Ebene Mastertextformat bearbeiten 23 [Social
Media] Manfred Steyer [web] ANGULARarchitects.io Manfred Steyer @ Manfred Steyer Slides & Examples Remote Company Workshops and Consulting http://angulararchitects.io