From: Avdi Grimm <avdi@...>
Date: 2008-04-05T12:53:17+09:00
Subject: Re: The ||= assignment operator

On this topic, am I the only one who would really like to see a
dedicated "defaulting operator" in Ruby?  Something that actually has
the semantics which a lot of people mistakenly assume for ||=, i.e.
"assign if and only if nil"?  I think Perl6 uses the //= operator for
this.  This is such a subtle gotcha.  I've seen a lot of code that was
potentially buggy because it didn't account for the fact that the
'false' value would be handled incorrectly.

--
Avdi