From: Simon Krahnke <overlord@...>
Date: 2008-05-02T21:35:06+09:00
Subject: Re: Please explain nuances of ||=

* Robert Klemme <shortcutter@googlemail.com> (21:21) schrieb:

> irb(main):009:0> h[1] = h[1] || 10
> => true

Well, the difference is that h[1] gets only evaluated once.

But now I get it: It does make a difference here if there is an
assignment or not. So much for metaphysics. :-(

So, neither x = x || y nor x || x = y explain everything about x ||= y.

&&= and ||= are different from += and co, because of their short-cut
behavior. They are conditional assignment operators.

mfg,                   simon .... sfti