Spreadsheet::ParseExcel的数据结构

https://metacpan.org/pod/Spreadsheet::ParseExcel#worksheets()

parser

• new()：生成一个新的parser
  my $parser = Spreadsheet::ParseExcel->new();
• parse($filename, $formatter) :吃进一个excel档，并给出handler。
  my $workbook = $parser->parse(‘Book1.xls’);

workbook

• worksheets()：得到workbook中所有sheet的handler
  for my $worksheet ( $workbook->worksheets() )
• worksheet()：根据index或者name得到一个特定worksheet的handler
  $worksheet = $workbook->worksheet(‘Sheet1’);
  $worksheet = $workbook->worksheet(0);
• worksheet_count()：得到workboot中worksheet的数量
  my $worksheet_count = $workbook->worksheet_count();
• get_filename()：得到excel workbook的名字
  my $filename = $workbook->get_filename();

worksheet

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