From: James Edward Gray II <james@...>
Date: 2007-09-13T03:59:42+09:00
Subject: Re: Merge an array of hashes

On Sep 12, 2007, at 1:55 PM, cleaner416 wrote:

> For some reason I can't get my head wrapped around this trivial
> exercise.  I have an array of hashes like so
>
> a = [ { :some_key => :some_value }, { :another_key
> => :another_value } ]
>
> And I would like to flatten it to single hash in one line so I get
>
> { :some_key => :some_value, :another_key => :another_value }
>
> Any suggestions?

Sure:

 >> a = [{:some_key => :some_value}, {:another_key => :another_value}]
=> [{:some_key=>:some_value}, {:another_key=>:another_value}]
 >> a.inject { |all, h| all.merge(h) }
=> {:some_key=>:some_value, :another_key=>:another_value}

James Edward Gray II