Add double_upto method to Fixnum : Fixnum extension « Number « Ruby






  1. Ruby
  2. Number
  3. Fixnum extension

Add double_upto method to Fixnum


class Fixnum
  def double_upto(stop)
    x = self
    until x > stop
      yield x
     x = x * 2
    end
  end
end
10.double_upto(50) { |x| puts x }
# 10
# 20
# 40








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