回答編集履歴
1
1列目の削除処理を追加
answer
CHANGED
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@@ -8,6 +8,7 @@
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8
8
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9
9
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table = CSV.table(infile)
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10
10
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table[:col3] = table[:col1]
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11
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+
table.by_col!.delete(:col1)
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11
12
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File.write(outfile, table)
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12
13
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```
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13
14
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実行結果
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@@ -25,15 +26,15 @@
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25
26
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$ ruby a.rb
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26
27
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27
28
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$ cat out.csv
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|
29
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+
col2,col3
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30
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+
1,a
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31
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+
2,b
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32
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+
3,c
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33
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+
4,d
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34
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+
5,e
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35
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+
6,f
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36
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+
7,g
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28
37
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29
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-
col1,col2,col3
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30
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-
a,1,a
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31
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-
b,2,b
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32
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-
c,3,c
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33
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-
d,4,d
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34
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-
e,5,e
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35
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-
f,6,f
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36
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-
g,7,g
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37
38
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```
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38
39
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39
40
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> ... CSVファイルの何行何列目をダイレクトに削除 ...
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