From: Dominik Honnef <dominikh@...>
Date: 2011-01-11T18:39:41+09:00
Subject: Re: Confusion regarding boolean operators.

"Jonas Pfenniger (zimbatm)" <jonas@pfenniger.name> writes:

> it looks like the ! unary operator is now definable in ruby-1.9.2.
> This is something that has changed from the 1.8.X series, which may
> explain why the documentation error.

I am nit-picking here, but it's possible since 1.9 in general (or at
least 1.9.1, I couldn't test it with 1.9.0), not just 1.9.2.