[Solved] Identify the error in this Ruby code:str = "hello" str.freeze! str — Ans: Method freeze! does not exist; should use freeze | Ruby

Ruby - String Operations

Identify the error in this Ruby code:

str = "hello"
str.freeze!
str << " world"

AString must be frozen before assignment

BCannot append to string without converting to symbol

CNo error; code runs fine

DMethod freeze! does not exist; should use freeze

Step-by-Step Solution

Solution:

Step 1: Check method names for freezing
Ruby's String class has freeze method, but no freeze! method.
Step 2: Identify the error
Calling freeze! causes a NoMethodError; correct method is freeze.
Final Answer:
Method freeze! does not exist; should use freeze -> Option D
Quick Check:
Use freeze, not freeze! method [OK]

Quick Trick: Use freeze, not freeze! method [OK]

Common Mistakes:

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