From: Craig Demyanovich <cdemyanovich@...>
Date: 2008-10-21T00:04:07+09:00
Subject: Re: Way to split a string based on fixed length?

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I thought String#split with a regex might do it, but I'm not sure why it
returns an array with empty strings in it. So I tried String#scan. It works,
but since we're grouping into runs of eight characters, it returns an array
of arrays of results. No problem, we can just use Array#flatten to take care
of that. Here's IRB output showing the approaches:

>> '0000000N0000000N0000000N0000000N'.split(/(\w{8})/)
=> ["", "0000000N", "", "0000000N", "", "0000000N", "", "0000000N"]
>> '0000000N0000000N0000000N0000000N'.scan(/(\w{8})/)
=> [["0000000N"], ["0000000N"], ["0000000N"], ["0000000N"]]
>> '0000000N0000000N0000000N0000000N'.scan(/(\w{8})/).flatten
=> ["0000000N", "0000000N", "0000000N", "0000000N"]

Regards,
Craig

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