[Solved] Given this Ruby hash, what is the error in accessing the value? settings = { 'theme' => 'dark', :font_size => 12 } puts settings.fetch(:theme) | Ruby

Ruby - Hashes

Given this Ruby hash, what is the error in accessing the value?

settings = { 'theme' => 'dark', :font_size => 12 }
puts settings.fetch(:theme)

AKeyError because :theme symbol key does not exist.

BNo error; outputs 'dark'.

CSyntaxError due to mixed key types.

DRuntimeError because font_size is a symbol.

Step-by-Step Solution

Solution:

Step 1: Check hash keys and access
The hash has a string key 'theme' and a symbol key :font_size.
Step 2: Identify the accessed key and result
Accessing settings.fetch(:theme) looks for symbol :theme, which does not exist, raising a KeyError.
Final Answer:
KeyError because :theme symbol key does not exist. -> Option A
Quick Check:
Access key type must match stored key type [OK]

Quick Trick: Match key type exactly when accessing hash values [OK]

Common Mistakes:

MISTAKES

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Given this Ruby hash, what is the error in accessing the value?