From: Florian Frank <flori@...>
Date: 2002-09-12T22:55:07+09:00
Subject: Re: Multi-level sort idiom?

On Tue, 2002-09-10 at 20:35, Mike Stok wrote:
> You can use Numeric's nonzero? e.g.
> 
>   x = [[5, 1], [3, 2], [3, 3], [1, 5]]
>   x.sort { |a, b| (a[0] <=> b[0]).nonzero? || a[1] <=> b[1] }
> 
>     => [[1, 5], [3, 2], [3, 3], [5, 1]]

In this case

x.sort { |a,b| a <=> b }

or even 

x.sort

would do the right thing already. Ruby's objects often know how to
compare to each other already.

-- 
C++ : an octopus made by nailing extra legs onto a dog.