[Solved] Identify the error in the following Ruby method using hash named parameters: def display(options = {}) puts "Title: #{options[:title]}" puts "Author: #{options[:author]}" end display(title:... | Ruby

Ruby - Hashes

Identify the error in the following Ruby method using hash named parameters:

def display(options = {})
  puts "Title: #{options[:title]}"
  puts "Author: #{options[:author]}"
end

display(title: "Ruby Guide")

AIt prints Title but prints nothing for Author without error.

BIt raises an error because :author key is missing in options.

CSyntax error due to missing parentheses in method call.

DNo error; it prints Title and Author correctly.

Step-by-Step Solution

Solution:

Step 1: Analyze method call and parameters
The method display is called with a hash containing only :title. The :author key is missing.
Step 2: Understand Ruby hash access behavior
Accessing a missing key like options[:author] returns nil, which prints as empty string without error.
Final Answer:
It prints Title but prints nothing for Author without error. -> Option A
Quick Check:
Missing key returns nil, no error [OK]

Quick Trick: Missing hash keys return nil, print empty string [OK]

Common Mistakes:

MISTAKES

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