From: Rob Biedenharn <Rob@...>
Date: 2008-09-22T22:25:01+09:00
Subject: Re: Merging two arrays

On Sep 22, 2008, at 9:02 AM, Chris Chris wrote:
> Hi,
>
> in Ruby, I have two arrays:
>
> products = Array.new
> products << ["Amazon",121212,"Harry Potter"]
> products << ["Amazon",242424,"John Grisham"]
> products << ["Amazon",353535,"Michael Crichton"]
>
> links = Array.new
> links << [121212,"www.amazon.com/abc"]
> links << [242424,"www.amazon.com/johngrisham"]
> links << [353535,"www.amazon.com/somelink"]
>
> I would like to merge these two arrays. The article number is to be  
> the
> identifier.
>
> Thus, I would like an array like this as the result:
> ["Amazon",121212,"Harry Potter","www.amazon.com/abc"]
>
> Any help greatly appreciated.
>
> Cheers, Chris

Treat links as an associative array, and use something like:

products.collect! {|p| p << links.assoc(p[1])[1] }

I.e., look at the docs for Array#assoc

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob@AgileConsultingLLC.com