ruby-uebungen/Assignment_036/solution

Lösung: Eigenclass einer Klasse

class Numeric
  class << self
    def to_binary(n)
      n.to_s(2)
    end
  end
end

puts Numeric::to_binary(47)

Alternative Lösung:

class << Numeric
  def to_binary(n)
    n.to_s(2)
  end
end

puts Numeric::to_binary(47)