[Solved] Identify the error in this Ruby code snippet:a = {x: 10}b = {y: 20}a.merge! bputs a — Ans: No error; code works correctly | Ruby

Ruby - Hashes

Identify the error in this Ruby code snippet:

a = {x: 10}

b = {y: 20}

a.merge! b

puts a

AOutput will be empty hash

BNo error; code works correctly

CRuntime error because merge! cannot be used with variables

DSyntax error due to missing parentheses in merge!

Step-by-Step Solution

Solution:

Step 1: Check syntax of merge! method call
merge! can be called without parentheses in Ruby, so a.merge! b is valid syntax.
Step 2: Verify runtime behavior
merge! updates a with keys and values from b, so a becomes {x: 10, y: 20}. No errors occur.
Final Answer:
No error; code works correctly -> Option B
Quick Check:
merge! updates original hash without error [OK]

Quick Trick: merge! can be called without parentheses [OK]

Common Mistakes:

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