From: James Gray <james@...>
Date: 2008-07-04T01:08:21+09:00
Subject: Re: pseudo-randomize an array in a consistent order

On Jul 3, 2008, at 11:04 AM, Robert Dober wrote:

> a.sort{ rand }

Don't do that:

 >> a = (1..5).to_a
=> [1, 2, 3, 4, 5]
 >> a.sort { rand }
=> [5, 3, 1, 4, 2]
 >> a.sort { rand }
=> [5, 3, 1, 4, 2]
 >> a.sort { rand }
=> [5, 3, 1, 4, 2]

Use a.sort_by { rand } instead.

James Edward Gray II