A Ruby Circle Class

circle.rb

module WhiteHat101
  class Circle
    attr_accessor :origin, :radius
    def initialize origin = [0,0], radius = 0
      @origin = origin
      @radius = radius
    end
    def self.origin_point origin, point
      radius = Math.sqrt origin.zip(point)
        .map {|a,b| (a - b)**2 }
        .inject(0.0, :+)
      new origin, radius
    end
    def where point
      radius = Math.sqrt origin.zip(point)
        .map {|a,b| (a - b)**2 }
        .inject(0.0, :+)
        @radius <=> radius
    end
  end
end

WhiteHat101::Circle.origin_point [1,2], [3,4]