From: Brian Adkins <lojicdotcom@...>
Date: 2008-04-06T00:55:07+09:00
Subject: Re: The ||= assignment operator

On Apr 5, 8:40 am, "David A. Black" <dbl...@rubypal.com> wrote:
> Hi --
>
> On Sat, 5 Apr 2008, Robert Dober wrote:
> > Furthermore things are simple
>
> > (1) lval ||= rval  is lval = lval || rval
>
> I think you mean:
>
>    lval || lval = rval

Huh?

My understanding has always been that x ||= y is shorthand for x = x
|| y just as x += y is shorthand for x = x + y. That also seems to be
the understanding of the "Programming Ruby" text (p. 125 of the
latest). In other words, an assignment will take place even if it's
superfluous.