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Ruby Ruby Modules Ruby Core Modules Comparable

Posted by Jason Carr
Jason Carr
5,495 Points

Is there a problem with my code?

Is there a problem with my code?

shoes.rb 
class Shoes
  include Comparable

  attr_accessor :size

  def <=>(size)
    shoes <=> size
  end

  def initialize(size)
    @size = size
  end
end

1 Answer

William Li
PLUS
William Li
Courses Plus Student 26,868 Points
William Li
William Li
Courses Plus Student 26,868 Points

The problem here is that in the spaceship method definition body, you didn't actually compare the size of two shoes. To do so, you need to write the code this way.

class Shoes
  include Comparable
  attr_accessor :size

  def initialize(size)
    @size = size
  end

  def <=>(other)
    self.size <=> other.size
  end
end

Let me know if you have further questions.