[Solved] In an event-driven system, a developer wrote this code snippet:def consume(event_queue): event = event_queue.pop() process(event)What is the main issue with this code? | LLD

LLD - Advanced LLD Concepts

In an event-driven system, a developer wrote this code snippet:

def consume(event_queue):
    event = event_queue.pop()
    process(event)

What is the main issue with this code?

AIt does not check if the queue is empty before popping

BIt adds events instead of removing them

CIt uses an undefined function 'process'

DIt processes events in reverse order, not FIFO

Step-by-Step Solution

Solution:

Step 1: Analyze pop usage without check
pop() removes last item but no check if queue is empty, risking error.
Step 2: Identify error risk
Calling pop() on empty list causes runtime error; code lacks safety check.
Final Answer:
It does not check if the queue is empty before popping -> Option A
Quick Check:
pop() on empty list causes error [OK]

Quick Trick: Always check queue not empty before pop() [OK]

Common Mistakes:

MISTAKES

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