13 lines
316 B
Plaintext
13 lines
316 B
Plaintext
# Read
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var csvfile = %f'data.csv';
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var fh = csvfile.open_r;
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var header = fh.line.trim_end.split(',');
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var csv = fh.lines.map { .trim_end.split(',').map{.to_num} };
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fh.close;
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# Write
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var out = csvfile.open_w;
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out.say([header..., 'SUM'].join(','));
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csv.each { |row| out.say([row..., row.sum].join(',')) };
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out.close;
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