From: Adam Shelly <adam.shelly@...>
Date: 2008-08-15T03:31:25+09:00
Subject: Re: nested loop

On 8/14/08, Erwin <yves_dufour@mac.com> wrote:
> residence_rentals_ids = []
> user.franchise.residences.each { |residence| residence.rentals.map { |
> rental| residence_rentals_ids << rental[:id] }.compact   }
>
> but is there a way to avoid the residence_rentals_ids = []  line,
> including the array initialization into a block ?

residence_rentals_ids  = user.franchise.residences.map{ |residence|
  residence.rentals.map { |rental| rental[:id] }.compact }.flatten