Geek Mama » Add new tag http://blogs.law.harvard.edu/lianaleahy exploits of a mom on rails Wed, 25 Nov 2009 18:11:35 +0000 http://wordpress.org/?v=2.8.5.2 en hourly 1 http://creativecommons.org/licenses/by-sa/3.0/ each_with_index http://blogs.law.harvard.edu/lianaleahy/2008/10/15/each_with_index/ http://blogs.law.harvard.edu/lianaleahy/2008/10/15/each_with_index/#comments Wed, 15 Oct 2008 19:04:12 +0000 lianaleahy http://blogs.law.harvard.edu/lianaleahy/?p=26 You won’t find each_with_index in the ruby Array class documentation. But this handy little method allows you to iterate through an array while also keeping track of which element you’re on.

It works something like this:
my_array.each_with_index do
|a, index| puts "#{a} is located at index #{index}"
end

Sure beats typing
i=0; i++; i<(array.size -1)

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