From: Robert Dober <robert.dober@...>
Date: 2007-03-13T16:36:12+09:00
Subject: Re: non-destructive merging of hashes in array

On 3/13/07, Harrison Reiser <y2kbugxp90@gmail.com> wrote:
> On Mar 12, 8:39 pm, "Mushfeq Khan" <mushfeq.k...@gmail.com> wrote:
> > You can even do:
> >
> > hashes.inject(Hash.new {|h, k| 0}) {|result, hash| result.merge(hash) {|k,
> > e, v| e + v}}
>
> Oh, you beat me to it.  I might add, though, that the parameters in
> the initializer block can be safely removed:
>
> hashes.inject(Hash.new {0}) {|memo, hash| memo.merge(hash) {|k,e,v| e
> + v}}
>
> Harrison Reiser
>
and my humble contribution gives:

     hashes.inject{|memo, hash| memo.merge(hash) {|k,e,v| e+ v}}

which is - as Gilles guessed correctly - a concise oneliner, boy I love Ruby.

Robert
-- 
We have not succeeded in answering all of our questions.
In fact, in some ways, we are more confused than ever.
But we feel we are confused on a higher level and about more important things.
-Anonymous