From: "Bartosz Dziewoński" <matma.rex@...>
Date: 2012-04-21T21:57:00+09:00
Subject: Re: What does '||=' mean?

Okay, it behaves like you adverties if you actually wrap that instance
variable in a class.

>ruby -W2 -e "class A; def asd; @ivar ||= 1; end; end; A.new.asd"

>ruby -W2 -e "class A; def asd; @ivar = @ivar || 1; end; end; A.new.asd"
-e:1: warning: instance variable @ivar not initialized

-- Matma Rex