From: new2ruby@... (New 2 Ruby)
Date: 2005-10-25T10:27:02+09:00
Subject: Re: [SORT?] by x,y allowing x,y to be passed as parms

On Mon, 24 Oct 2005 11:27:35 +0900, "David A. Black"
<dblack@wobblini.net> wrote:

>Hi --
>
>On Mon, 24 Oct 2005, New 2 Ruby wrote:
>
>> Question:  Are there better ways to do this
>> sort within the container class?

>     def new_ord(key1='size',key2='cusip')
>       @cds.replace(@cds.sort_by {|cd| [cd.send(key1), cd.send(key2)] })
>     end
....
>   p cdl.new_ord
>

Aah, thank you.  Just what the Dr. ordered.  Adding a pinch of Ara
Howard to generalize for n attributes:

def new_ord(*args)
   @cds.replace(@cds.sort_by {|cd| args.map {|a| cd.send a }}) 
 end
....
p cdl.new_ord('size','cusip')

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