---
title: "Angular Signals explained: How pull-based reactivity changes how we model state"
url: https://daily.dev/posts/angular-signals-explained-how-pull-based-reactivity-changes-how-we-model-state-zlgfeevqw
source_url: https://www.infoworld.com/article/4180890/angular-signals-explained-how-pull-based-reactivity-changes-how-we-model-state.html
type: article
source: "InfoWorld"
published: 2026-06-04T09:06:06.779Z
updated: 2026-06-07T17:50:34.093Z
tags: ["angular", "rxjs"]
reading_time: 10
upvotes: 1
comments: 1
language: en
---

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# Angular Signals explained: How pull-based reactivity changes how we model state

**[InfoWorld](https://daily.dev/sources/infoworld)** · 10 min read · 1 upvotes · 1 comments

## Summary

Angular Signals are a pull-based reactivity primitive that model current state and explicit dependencies, rather than event sequences. Unlike RxJS observables, Signals don't broadcast events — they mark dependent computations as stale and recompute them on next read. This makes them ideal for state-heavy problems like form modeling, where validity, errors, and UI flags can be derived declaratively from a single source of truth. The Angular Signal Forms API formalizes this by wrapping a plain data model in a writable signal, attaching validation schemas via a form() function, and exposing field state (invalid, errors, pending) as derived signals — eliminating the need for subscriptions, lifecycle hooks, or imperative state toggling. RxJS remains the right tool for async workflows and external event coordination, while Signals excel at state derivation.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.infoworld.com/article/4180890/angular-signals-explained-how-pull-based-reactivity-changes-how-we-model-state.html>

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---

Tags: [#angular](https://daily.dev/tags/angular), [#rxjs](https://daily.dev/tags/rxjs)

[View this post on daily.dev](https://daily.dev/posts/angular-signals-explained-how-pull-based-reactivity-changes-how-we-model-state-zlgfeevqw)