[Solved] Identify the error in this Ruby class using Enumerable:class MyList include Enumerable def initialize(items) @items = items end def each @items.each end end list = MyList.new([1, 2, 3]) p list.... | Ruby

Ruby - Enumerable and Collection Processing

Identify the error in this Ruby class using Enumerable:

class MyList
  include Enumerable
  def initialize(items)
    @items = items
  end
  def each
    @items.each
  end
end

list = MyList.new([1, 2, 3])
p list.select { |x| x > 1 }

AThe initialize method is missing.

BThe each method does not yield elements to the block.

Cselect method is not defined in Enumerable.

DEnumerable cannot be included in custom classes.

Step-by-Step Solution

Solution:

Step 1: Check the each method implementation
The each method calls @items.each but does not yield elements to the block given to MyList's each.
Step 2: Understand why this causes an error
Enumerable methods expect each to yield elements; without yield, methods like select won't work properly.
Final Answer:
The each method does not yield elements to the block. -> Option B
Quick Check:
each must yield elements = D [OK]

Quick Trick: Ensure each yields elements to the block [OK]

Common Mistakes:

Assuming calling each without yield is enough
Thinking Enumerable can't be included
Believing select is not part of Enumerable

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More Ruby Quizzes

Identify the error in this Ruby class using Enumerable:

Step 1: Check the each method implementation

Step 2: Understand why this causes an error

Final Answer:

Quick Check:

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