From: Joel Pearson <lists@...>
Date: 2013-03-05T01:01:56+09:00
Subject: Re: Efficient Ruby equivalent to Excel's "SUMIF"?

I incorporated a mixture of these suggestions into my own data 
construct, and it completes the task in a couple of seconds now rather 
than in minutes. I'll have to see if there's anywhere else I could use 
this kind of approach. Thanks for the help :)

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