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  1. or download this
    m{
      (?{ [ {}, 0 ] })
    ...
      sprintf "length: %d digits: %s quantity: %d\n",
        length($str), $str, $count;
    }
    
  2. or download this
    m{
      # set up $^R to hold a hashref and a number.
    ...
      # the entire string.
      (?!)
    }x;