From: Martin Stannard <martin@...>
Date: 2002-10-11T10:02:18+09:00
Subject: FW: Sorting an array of hashes

 

-----Original Message-----
From: Yohanes Santoso
To: ruby-talk@ruby-lang.org
Sent: 11/10/2002 10:49 AM
Subject: Re: Sorting an array of hashes

snip.....

>a shorter one (not tested)

>#create a hash of firstKey containing array of k2
>top={}
>unsorted.each{|k1, k2|
>        if top[k1]
>                top[k1] << k2
>        else
>                top[k1] = [k2]
>        end
>}
>sorted = []
>top.sort.each{|k1, ak2|
>        ak2.sort.each {|k2|
>                sorted << [k1, k2]
>        }
>}
>p sorted
 

>YS.       

Hi Yohanes,

I couldn't get that to work. unsorted is an array of hashes so the each
method will only return 1 element.

regards,

Martin