From: Pedro Fortuny Ayuso <pfortuny@...>
Date: 2007-01-13T04:58:15+09:00
Subject: Re: What does this mean? ||=

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It does the following in this order:

if @account HAS A VALUE (is not nil) then DO NOTHING
  otherwise, compute Account.find(...) and set its return value into
@account.

It is useful whenever you want to avoid computing something if it already
holds a value.

Pedro.

On 1/12/07, Justin Ko <jko170@yahoo.com> wrote:
>
> I'm looking at this method and don't understand what ||= means:
>
> def current_account
>     @account ||= Account.find(session[:account_id])
> end
>
> I have the ruby for rails book and can't find anything on it.
>
> --
> Posted via http://www.ruby-forum.com/.
>
>


-- 
Pedro Fortuny Ayuso
C/Capuchinos 14, 1. 47006 Valladolid. SPAIN
http://pfortuny.sdf-eu.org

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