[Solved] Consider this Angular code snippet: const count = signal(0); const doubled = computed(() => count() * 2); count.... How does this behavior differ if count was an observable instead of a signal? | Angular

Angular - Signals

Consider this Angular code snippet:

const count = signal(0);
const doubled = computed(() => count() * 2);
count.set(4);
console.log(doubled());

How does this behavior differ if count was an observable instead of a signal?

Acomputed does not work with signals

Bcomputed would update automatically with observable as well

Ccomputed would not update automatically; manual subscription needed

DNo difference; both update synchronously

Step-by-Step Solution

Solution:

Step 1: Understand computed with signals
Computed automatically recalculates when dependent signals change.
Step 2: Behavior with observables
Observables require subscriptions; computed does not auto-update from observables.
Final Answer:
computed would not update automatically; manual subscription needed -> Option C
Quick Check:
Computed auto-update difference = A [OK]

Quick Trick: Computed auto-updates only with signals, not observables [OK]

Common Mistakes:

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