From: Lars Christensen <larsch@...>
Date: 2008-07-01T17:27:25+09:00
Subject: Re: ruby idiom a ||= b means?

On Jul 1, 6:49 am, Rob Biedenharn <R...@AgileConsultingLLC.com> wrote:
> On Jul 1, 2008, at 12:31 AM, Ratnavel P S wrote:
>
> > What does the ruby idiom a ||= b mean?
>
> It is like:
>         a || a = b

In english, thats: If a is nil or false, then leave it, else assign a
= b.

Often used instead of code like this:

if a.nil? then
   a = b
end