[Solved] Identify the error in this Ruby code using Comparable:class Item include Comparable attr_reader :weight def initialize(weight) @weight = weight end def compare(other) weight other.weight end end | Ruby

Ruby - Modules and Mixins

Identify the error in this Ruby code using Comparable:

class Item
  include Comparable
  attr_reader :weight
  def initialize(weight)
    @weight = weight
  end
  def compare(other)
    weight <=> other.weight
  end
end

ANo error, code is correct

BMissing <code>attr_writer</code> for weight

CShould use <code>extend Comparable</code> instead of <code>include</code>

DMethod name should be <code><=></code>, not <code>compare</code>

Step-by-Step Solution

Solution:

Step 1: Check method name for Comparable
The required method is <=>, not compare.
Step 2: Confirm other parts
Other parts like attr_reader and include are correct.
Final Answer:
Method name should be <=>, not compare -> Option D
Quick Check:
Define <=> method for Comparable [OK]

Quick Trick: Use exact method name <=> for Comparable [OK]

Common Mistakes:

Using wrong method name like compare
Confusing include and extend
Thinking attr_writer is needed here

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Identify the error in this Ruby code using Comparable:

Step 1: Check method name for Comparable

Step 2: Confirm other parts

Final Answer:

Quick Check:

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