harvest dailyside | irbマジ便利

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irbマジ便利

2007.09.19 Wednesday 16:55 | posted by TREE

ちょっとVBAの案件で、一行230項目ほどのCSVをテストで作りました。
できない事はないけど、手でやると面倒な程度の作業。
こんな時はirb（Rubyのインタプリタ）を起動して…



(1..5).each {|i|

  a = (1..230).to_a.map!{|j| "#{i}-#{j}"}.join(',')

  puts a

}

以上。いちいちaなんて変数を作らずに

puts (1..230)…

の方が早いのですが、それだとコンソールに出力されませんでした。
（Windows XP Professional、Ruby 1.8.5）

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