From: "Damián M. González" <lists@...>
Date: 2013-01-06T06:57:18+09:00
Subject: Re: Best practice for &&, ||, and, or

This can help you: http://rubylearning.com/images/operators.jpg
 It's the ruby operators by relevance, very usefull for beginners to 
understand how to work without parentheses(although not recommended). 
And also to know which or not is a method. See you around.

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