[Solved] What is wrong with this to_s method? class Item def to_s puts "Item description" end end puts Item.new.to_s | Ruby

Ruby - Classes and Objects

What is wrong with this to_s method?

class Item
  def to_s
    puts "Item description"
  end
end

puts Item.new.to_s

Aputs cannot be used inside to_s

BClass Item cannot have to_s method

Cto_s method must have parameters

Dto_s should return a string, not print it

Step-by-Step Solution

Solution:

Step 1: Understand to_s method role
The to_s method should return a string, not print it.
Step 2: Analyze the code behavior
Using puts inside to_s prints the string but returns nil, so puts Item.new.to_s prints an empty line after.
Final Answer:
to_s should return a string, not print it -> Option D
Quick Check:
to_s must return string, not output directly [OK]

Quick Trick: Return string in to_s; don't use puts inside it [OK]

Common Mistakes:

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What is wrong with this to_s method?