From: Siep Korteling <s.korteling@...>
Date: 2008-01-29T06:41:13+09:00
Subject: Re: Hash Sorting

Ilan Berci wrote:

> 
> ilan

irb(main):001:0> h = {1=>2,3=>4,5=>6}
=> {5=>6, 1=>2, 3=>4}
irb(main):002:0> h.to_a.sort
=> [[1, 2], [3, 4], [5, 6]]
irb(main):003:0> h.to_a.sort_by {|a,b| b}
=> [[1, 2], [3, 4], [5, 6]]
irb(main):004:0>

h.to_a.sort_by {|a,b| b} #sorts by value; the OP wants to sort by key.
h.to_a.sort_by {|key,value| key}
#or just
h.to_a.sort_by {|key|key}

Regards,

Siep


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