From: Stefano Crocco <stefano.crocco@...>
Date: 2008-10-03T21:22:16+09:00
Subject: Re: Iterate over array and add numbers of each object

Alle Friday 03 October 2008, Joshua Muheim ha scritto:
> Hi all
>
> number = 0;
> objects.each do |o|
>   number += o.some_number
> end
> return number
>
> I guess there's a much more beautiful way for this, or isn't? Something
> like collect or so...
>
> Thanks :-)
> Josh

If objects is an array, or any other thing which mixes-in the Enumerable 
module, you can use inject:

objects.inject(0){|tot, o| tot + o.some_number}

Stefano