From: Harry Ohlsen <harryo@...>
Date: 2003-08-07T12:07:18+09:00
Subject: Re: What's New and Shiny in Ruby 1.8.0?

Jason Creighton wrote:

> BTW, your original example worked fine on my version of Ruby. Another
> option, of course, is to implement <=> for Person like so (untested)
> 
> class Person
>   def <=>(other)
>     [ @last_name, @first_name ] <=> [ other.last_name, other.first_name ]
>   end
> end

That's probably something one should do, anyway.  Ie, define the logical default ordering for objects of that type.

The thing I like about the sort_by approach is that it allows you to easily change the ordering on the fly.

It's also just such a nice example of POLS!

H.