# File tokyotyrant.rb, line 1171
    def putcat(pkey, cols)
      pkey = _argstr(pkey)
      raise ArgumentError if !cols.is_a?(Hash)
      args = Array::new
      args.push(pkey)
      cols.each do |ckey, cvalue|
        args.push(ckey)
        args.push(cvalue)
      end
      rv = misc("putcat", args, 0)
      return rv ? true : false
    end