From: Ilan Berci <coder68@...>
Date: 2007-10-20T05:50:23+09:00
Subject: Re: What's the ruby way of grouping elements of an array?

Sam Kong wrote:

> 
> The above method should return an array of arrays grouped by age.
> 
> What's the ruby way for this case?
> I think I can implement it but I am sure that a good way already exists.
> 
> Thanks.
> 
> Sam

If you require 'action_pack' you get group_by() for free

>> Array.new(20) {Kernel.rand(20)}.group_by {|age| age > 10}
=> {false=>[9, 5, 3, 6, 0, 8, 3, 4, 9, 2, 0, 0, 10, 1], true=>[15, 13, 
18, 12, 13, 14]}
>> 

hth

ilan
-- 
Posted via http://www.ruby-forum.com/.