From: Stefano Crocco <stefano.crocco@...>
Date: 2008-04-07T20:40:38+09:00
Subject: Re: strange, non-repetitious error

On Monday 07 April 2008, Pan Kracy wrote:
> I don't use "lines.each do |line|" because I need number of line.

Do you know about Array#each_index and Array#each_with_index?:

['a', 'b', 'c'].each_index{|i| puts i}

Output:
0
1
2

['a', 'b', 'c'].each_with_index{|obj, i| puts "i: #{i}, obj: #{obj}"}

Output:
i: 0, obj: a
i: 1, obj: b
i: 2, obj: c

Stefano