[Solved] Identify the error in this Ruby code snippet: obj = "text" copy = obj.clone copy.freeze copy — Ans: Runtime error: can't modify frozen String | Ruby

Ruby - Class Methods and Variables

Identify the error in this Ruby code snippet:

obj = "text"
copy = obj.clone
copy.freeze
copy << " more"
puts copy

ANo error, output is 'text more'

BSyntax error on clone method

COutput is 'text' only

DRuntime error: can't modify frozen String

Step-by-Step Solution

Solution:

Step 1: Analyze freezing and mutation
The copy string is frozen by copy.freeze, so it cannot be modified.
Step 2: Understand mutation attempt
The operation copy << " more" tries to modify the frozen string, causing a runtime error.
Final Answer:
Runtime error: can't modify frozen String -> Option D
Quick Check:
Modifying frozen object causes runtime error [OK]

Quick Trick: Frozen objects cannot be changed; modifying causes error [OK]

Common Mistakes:

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