From: Ben Johnson <bjohnson@...>
Date: 2008-10-02T03:13:55+09:00
Subject: Re: Ordered hash hack for < ruby 1.9?

Patrick Doyle wrote:
> Why not iterate over myhash.keys.sort instead of just myhash.keys?
> 
> --wpd

Because for performance it's bad. I don't care if performance is bad in 
my tests. Which is why it would be nice to alter how hashes work ONLY in 
my test environment. But sorting by keys isn't smart either.

>> a = {:a => 1, :b => 2}
=> {:a=>1, :b=>2}
>> a.keys.sort
NoMethodError: undefined method `<=>' for :a:Symbol
  from (irb):16:in `sort'
  from (irb):16
  from :0

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