From: Robert Klemme <bob.news@...>
Date: 2003-06-26T00:44:04+09:00
Subject: Re: Concatenating Hash's


"Simon Strandgaard" <0bz63fz3m1qt3001@sneakemail.com> schrieb im
Newsbeitrag news:pan.2003.06.25.08.56.32.933291@sneakemail.com...
> On Wed, 25 Jun 2003 10:45:02 +0200, Robert Klemme wrote:
> >
> > def hash_join(h1,h2); h1.dup.update(h2); end
> >
> > you could also do
> >
> > class Hash; def +(o); dup.update(o); end; end
> >
> > h1={1,2,3,4}
> > h2={"a","b"}
> > h1 + h2  # => {"a"=>"b", 1=>2, 3=>4}
>
>
> If your hash-tables has differents sizes, I suppose that it will be
> fastest to merge the smallest into the biggest.

You mean

class Hash; def +(o); if size >= o.size then dup.update(o); else o+self;
end; end; end

?

    robert