From: Daniel Harple <dharple@...>
Date: 2006-03-08T23:55:55+09:00
Subject: Re: Newbie: sorting an array of custom objects

On Mar 8, 2006, at 3:38 PM, Einar H�st wrote:

> As a project for learning Ruby, I'm writing a simple game. I have  
> some simple objects that I would like to be able to sort  
> 'automatically' in an array. In Java, I can implement the  
> Comparable interface to make the Array.sort method do this for me.  
> I'm sure I can do something similar or simpler i Ruby, I just don't  
> know how. Can anyone help? An even more elegant solution would be  
> to able to say to the array 'just put this object where it  
> belongs', without really having to sort the whole array.

You could use a SortedSet, however this has a downside. A Set  
contains no duplicate objects.

require 'set'

set = SortedSet.new
set << 3
set << 1
set << 10
set << 3
p set # -> #<SortedSet: {1, 3, 10}>

-- Daniel