From: Yossef Mendelssohn <ymendel@...>
Date: 2008-09-23T13:57:15+09:00
Subject: Re: To be not, or not to be not?

On Sep 22, 11:05 pm, Ruby Freak <twscann...@gmail.com> wrote:
> Is !! as simple as it looks, or does it have meaning beyond a double
> negative? Google doesn't recognize !! in a search.

It's as simple as it looks, which is up for debate. The point of the
double negative is to concisely turn any into a boolean. !! will
always result in either true or false.

See http://github.com/ymendel/truthy/tree/master/lib/truthy.rb (and
the spec at http://github.com/ymendel/truthy/tree/master/spec/truthy_spec.rb
if you're interested).

--
-yossef