From: Trans <transfire@...>
Date: 2008-10-27T08:09:27+09:00
Subject: Re: Hash.merge_add! extension - how does this code look?



On Oct 26, 5:45 pm, Stefan Rusterholz <apei...@gmx.net> wrote:

> Reading your problem and code I think you missed that Hash#merge
> optionally takes a block which seems to solve your issue just fine but
> in a more generic manner:
>
> hash = {'foo' => 'bar1'}
> hash.merge! 'foo' => 'bar2' do |key, existing, new|
>   Array(existing) + [new]
> end
> p hash # -> {"foo"=>["bar1", "bar2"]}

Nice. I didn't know it could take a block either. Has that been there
all along?

T.