[Solved] Given the following code, what will be the output?hash = { apple: 1, banana: 2 } key = :apple hash[key] = 3 puts hash[:apple]Consider the immutability and identity of symbols in your answer. | Ruby

Ruby - Variables and Data Types

Given the following code, what will be the output?

hash = { apple: 1, banana: 2 }
key = :apple
hash[key] = 3
puts hash[:apple]

Consider the immutability and identity of symbols in your answer.

A3

B1

Cnil

DKeyError

Step-by-Step Solution

Solution:

Step 1: Understand symbol keys in hash
Symbols used as keys are immutable and unique, so :apple and key (which is :apple) refer to the same key.
Step 2: Update hash value for :apple
Assigning hash[key] = 3 updates the value for the :apple key from 1 to 3.
Step 3: Output the updated value
puts hash[:apple] prints the updated value 3.
Final Answer:
3 -> Option A
Quick Check:
Symbol keys are unique, so value updates correctly [OK]

Quick Trick: Symbol keys are unique; updating key changes value [OK]

Common Mistakes:

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