From: James Coglan <jcoglan@...>
Date: 2008-08-12T00:53:02+09:00
Subject: Re: Sort array by two attributes? (like sql "order by A, B")

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> Sort_by is much faster than sort with a block.


This is often true as sort_by only calls methods on each object once, but it
is not universally true -- see
http://ruby-doc.org/core/classes/Enumerable.html#M003151 for more
information, and run some benchmarks for your use case if it's a big issue.

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