From: Haruka YAGNI <hyagni@...>
Date: 2011-03-09T14:05:43+09:00
Subject: Re: Unexpected problem: hash[key] << value

On Wed, Mar 9, 2011 at 12:45 PM, Joey Zhou <yimutang@gmail.com> wrote:
> I think use "<<" maybe intuitive, but the result is unexpected. What's
> wrong with it?

Hash.default refers to the same Array at each element.
You cannot use the first code, because "<<" changes the default array,
not each element.

Here is a good example from the manual, but it is Japanese... sorry
http://www.ruby-lang.org/ja/man/html/trap_Hash.html

-- 
Haruka YAGNI
hyagni@gmail.com