From: Peter Szinek <peter@...>
Date: 2006-11-21T00:39:12+09:00
Subject: Re: Create array of hash values

David Lelong wrote:
> Hi,
> 
> I have a hash that contains the following keys/values:
> 
> [#<Contact_List:0x2607150 @attributes={"contact_id"=>"4"}>, 
> #<Contact_List:0x2607114 @attributes={"contact_id"=>"8"}>]
> 
> I want to create an array containing the contact_id values.  What's an 
> easy way to do this?

Try this:

result = x.inject([]) {|a,h| a << h.values[0]; a}

(x is the array of hashes)

Cheers,
Peter

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