From: Ken Bloom <kbloom@...>
Date: 2006-11-21T00:45:05+09:00
Subject: Re: Create array of hash values

On Tue, 21 Nov 2006 00:33:33 +0900, 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?
> 
> Thanks,
> 
> David
>

Sorry. I should look at the code you have before I respond.

You have an array full of objects. I'm not sure how to get a contact_id
out of a Contact_List, but let's assume you've defined a method that gets
you the contact id, called Contact_List#id

Then, you would get the contact id by

[#<Contact_List:0x2607150 @attributes={"contact_id"=>"4"}>, 
#<Contact_List:0x2607114 @attributes={"contact_id"=>"8"}>].collect do |x|
  x.id
end

-- 
Ken Bloom. PhD candidate. Linguistic Cognition Laboratory.
Department of Computer Science. Illinois Institute of Technology.
http://www.iit.edu/~kbloom1/