Weird way to say Bhaskara in Ruby (or "((-b).± √ Δ(a, b, c))" / (2 * a) as a valid Ruby expression)

Bhaskara

#!/usr/bin/env ruby
#-*- coding: utf-8 -*-

def √(n)
  Math::sqrt(n)
end

class Numeric
  def ±(n)
    r = [self + n, self - n]
    
    def r./(n)
      [first / n, last / n]
    end
    r
  end
end

def Δ(a, b, c)
  b**2 - (4 * a * c)
end

def roots(a, b, c)
  ((-b).± √ Δ(a, b, c)) / (2 * a)
end

# x² -5x + 6
puts roots 1, -5, 6

muito foda

iradão, mano

bonito

bacana