質問編集履歴
1
初歩的なミスを修正
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File without changes
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@@ -23,7 +23,7 @@
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CSV.foreach('csv.csv', :encoding => "UTF-8", headers: true) do |row|
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CSV.open('csv.csv', :encoding => "UTF-8", headers: true) do |csv|
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csv[
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+
csv[2] << row[0]
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end
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end
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