[Solved] Identify the error in this Ruby class that tries to override the * operator:class Multiplier def *(other) @value * other end end m = Multiplier.new puts m * 3 | Ruby

Ruby - Operators and Expressions

Identify the error in this Ruby class that tries to override the * operator:

class Multiplier
  def *(other)
    @value * other
  end
end

m = Multiplier.new
puts m * 3

AWrong method name for operator *

BOperator * cannot be overridden

CMissing initialize method to set @value

DCannot multiply by a number

Step-by-Step Solution

Solution:

Step 1: Check class initialization
The class does not define an initialize method, so @value is never set.
Step 2: Understand the error cause
When m * 3 runs, @value is nil, causing a NoMethodError for * on nil.
Final Answer:
Missing initialize method to set @value -> Option C
Quick Check:
Uninitialized @value causes error [OK]

Quick Trick: Always initialize instance variables before using them [OK]

Common Mistakes:

MISTAKES

Master "Operators and Expressions" in Ruby

9 interactive learning modes - each teaches the same concept differently

More Ruby Quizzes

Identify the error in this Ruby class that tries to override the * operator: