Refining Array's Spaceship Operator

array-spaceship.rb

module SpaceshipArray
  refine Array do
    def <=> other
      return 'equal' if self == other

      1.upto [self.count, other.count].max do |i|
        case self[i] <=> other[i]
        when 1
          return 'bigger'
        when -1
          return 'smaller'
        end
      end
    end
  end
end

[1,2,3] <=> [1,2,3]
#=> 0
[1,2,4] <=> [1,2,3]
#=> 1
[1,2,3] <=> [1,2,4]
#=> -1

using SpaceshipArray

[1,2,3] <=> [1,2,3]
#=> "equal"
[1,2,4] <=> [1,2,3]
#=> "bigger"
[1,2,3] <=> [1,2,4]
#=> "smaller"