From: David Cruz <crucoba@...>
Date: 2006-05-05T07:21:59+09:00
Subject: Re: Ruby equivalent to simple awk program

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>
> input =3D (ARGV.length>0) ? File.new(ARGV[0]) : $stdin
> arr =3D []
> input.each_line { |line| arr << line }
> arr.reverse_each { |line| puts line }
>

input.each_line { |line| arr.unshift line }

it saves an iterator

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