From: Joel VanderWerf <vjoel@...>
Date: 2004-04-24T11:17:27+09:00
Subject: Re: pushing hash

Dave Thomas wrote:
> 
> On Apr 23, 2004, at 21:49, Pe�a, Botp wrote:
> 
>> Is there a reason why "<<" isn't allowed for hashes?
> 
> 
> Perhaps because hashes aren't ordered, and the common semantics of "<<" 
> implies order.

Can't be the whole story...

irb(main):001:0> require 'set'
=> true
irb(main):002:0> Set.new << 3
=> #<Set: {3}>