A place where I put the stuff I reckon should go into Ruby Core

gistfile1.rbx

class Fixnum
  def divisible?(by)
    if by.class == Array
      self.divisible_by_all?(by)
    elsif by.class == Range
      self.divisible_by_all?(by.to_a)
    elsif by.class == String
      self.divisible?(by.to_i)
    else
      self.divmod(by)[1] == 0
    end
  end
  
  def divisible_by_all?(list)
    list.delete_if{ |i| self.divisible?(i) }.empty?
  end
end