From: Stefan Rusterholz <apeiros@...>
Date: 2007-07-13T04:24:20+09:00
Subject: Re: Returning part of a hash

Trans wrote:
>     def &(other)
>       case other
>       when Array
>         k = (keys & other)
>         Hash[*(k.zip(values_at(*k)).flatten)]
>       else
>         Hash.new[*(to_a & other.to_a).flatten]
>       end
>     end
> 
>   end
> 
> T.
> 
> ---
> http://facets.rubyforge.org

Hash[*something.flatten] will destroy any nested arrays (and if you're 
so unlucky to get an even amount of elements, it won't even raise).

Regards
Stefan

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