[Solved] What is the output of this Ruby code?a = {a: 1, b: 2}b = {b: 3, c: 4}c = a.merge(b)puts c — Ans: {:a=>1, :b=>3, :c=>4} | Ruby

Ruby - Hashes

What is the output of this Ruby code?

a = {a: 1, b: 2}

b = {b: 3, c: 4}

c = a.merge(b)

puts c

A{:a=>1, :b=>2, :c=>4}

B{:a=>1, :b=>3}

C{:a=>1, :b=>3, :c=>4}

D{:b=>3, :c=>4}

Step-by-Step Solution

Solution:

Step 1: Understand merge behavior with overlapping keys
merge returns a new hash combining keys; overlapping keys get values from the second hash.
Step 2: Apply to given hashes
Key :b is in both hashes; value from b (3) replaces value from a (2). Keys :a and :c are included as is.
Final Answer:
{:a=>1, :b=>3, :c=>4} -> Option C
Quick Check:
Overlapping keys replaced by second hash [OK]

Quick Trick: Overlapping keys take second hash's value in merge [OK]

Common Mistakes:

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