[Solved] What is wrong with this subscription code?this.data$.subscribe(data => { this.value = data; }); // No unsubscribe called anywhere | Angular

Angular - RxJS and Observables Fundamentals

What is wrong with this subscription code?

this.data$.subscribe(data => {
  this.value = data;
});
// No unsubscribe called anywhere

AIt will unsubscribe automatically

BIt will throw a syntax error

CIt will cause a memory leak if component is destroyed

DIt will not receive any data

Step-by-Step Solution

Solution:

Step 1: Identify subscription management
The code subscribes but never unsubscribes, risking resource leaks.
Step 2: Understand Angular component lifecycle
Without unsubscribing, the subscription stays active after component destruction, causing memory leaks.
Final Answer:
It will cause a memory leak if component is destroyed -> Option C
Quick Check:
Missing unsubscribe = memory leak risk [OK]

Quick Trick: Always unsubscribe to avoid memory leaks [OK]

Common Mistakes:

MISTAKES

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What is wrong with this subscription code?