bqsoft/ruby-style-guide — pull request #1 by codezomb (2014-03-02 19:39:41+00:00)
Title: remove the constraint for not using double bang operator

The double bang !! is a standard ruby operator that is no more obscure than other literals such as %w, or !. Any misunderstanding, or misinterpretation is more of an issue of not understanding the ruby library, than it is the operator being obscure.