def init_with_ary(ary)
      @tuple = Array.new(ary.size)
      @tuple.size.times do |i|
        @tuple[i] = ary[i]
      end
    end
def init_with_ary(ary)
      @tuple = Array.new(ary.size)
      @tuple.size.times do |i|
        @tuple[i] = ary[i]
      end
    end
Munges +ary+ into a valid Tuple.