From: Joey Zhou <yimutang@...>
Date: 2011-03-09T21:01:20+09:00
Subject: Re: Unexpected problem: hash<< value

Robert Klemme wrote in post #986401:
> Well, in this case actually the better idiom is this:
>
> h = Hash.new {|h,k| h[k] = []}
This is actually what I need. Thank you.

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