# File lib/familia/redisobject.rb, line 382
    def [] idx, count=nil
      if idx.is_a? Range
        range idx.first, idx.last
      elsif count
        case count <=> 0
        when 1  then range(idx, idx + count - 1)
        when 0  then []
        when -1 then nil
        end
      else
        at idx
      end
    end