From: Rick DeNatale <rick.denatale@...>
Date: 2010-06-16T02:42:19+09:00
Subject: Re: shorthand

On Tue, Jun 15, 2010 at 1:24 PM, Brian Candler <b.candler@pobox.com> wrote:
> foo ||= 5
>
> is shorthand for
>
> foo = foo || 5

NO it is NOT, although many Rubyist seem to cling to this idea.

see http://talklikeaduck.denhaven2.com/2008/04/26/x-y-redux

and recent discussion on this very thread.

The difference between

x ||= 5

and

x = x | | 5

is that if x has a truthy value, then NO assignment will be done in
the first case (including assignment through a 'setter' method) in the
first case, but it will in the second.


-- 
Rick DeNatale

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