Checks whether a variable is not null

  * var : variable to check

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

• author: Jordi Boggiano <j.boggiano@seld.be>
• version: 1.0.0
• copyright: Copyright (c) 2008, Jordi Boggiano
• link: http://dwoo.org/
• date: 2008-10-23
• filesource: Source Code for this file
• license: Modified BSD License