From: Robert Klemme <shortcutter@...>
Date: 2010-03-23T05:40:11+09:00
Subject: Re: Sorting keys of hash based on value

On 03/22/2010 08:49 PM, Rob Biedenharn wrote:
> On Mar 22, 2010, at 2:40 PM, Aldric Giacomoni wrote:
> 
>> Riccardo Cecolin wrote:
>>> Do you want keys or the whole hash?
>>>
>>> irb(main):015:0> hash.keys.sort { |a,b| hash[b][:happy] <=>
>>> hash[a][:happy] }
>>> => [:c, :a, :b]
>> Of course.. I was trying to make it too complicated. Thanks!
>>
> 
> Or the slightly simpler sort_by
> 
> hash.keys.sort_by {|k| hast[k][:happy] }

Just for the variety:

hash.sort_by {|k,v| -v[:happy]}.map(&:first)

Kind regards

	robert

-- 
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