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Articles related to booleans

Boolean Expressions in Ruby Control Structures - About.com
A boolean expression is an expression used in a conditional or loop construct that decides which path the Ruby interpreter should take. In other words, Ruby will ...
http://ruby.about.com/od/control/a/Boolean-Expressions.htm
Using Boolean Operators in Ruby - About.com
Simple boolean expressions will only get you so far. What if you want to take a certain action if someone is older than eighteen, but younger than sixty-five?
http://ruby.about.com/od/control/a/Boolean-Operators.htm
TrueClass, FalseClass and NilClass Quick Reference
While these special boolean classes generally are not used on their own (they are sent to messages, they don't receive messages), there are a few operators ...
http://ruby.about.com/od/beginningruby/ss/Trueclass-Falseclass-And-Nilclass-Quick-Reference.htm
Excel Spreadsheets: Boolean Value, Definition and Use
Boolean values are used by Excel's Logical Functions, such as the IF function, AND function, and the OR function.
http://spreadsheets.about.com/od/b/g/81123booleanval.htm
JavaScript By Example - Objects - Boolean
To define a Boolean object we need to copy the Boolean built in object or simply assign one of the two boolean values to the field. We can then test its value in ...
http://javascript.about.com/od/byexample/a/object-boolean-example.htm
What Does Boolean Search Mean? - About Web Search
Boolean searches allow you to combine words and phrases using the words AND, OR, NOT and NEAR (otherwise known as Boolean operators) to limit, widen, ...
http://websearch.about.com/od/2/g/boolean.htm
Refining Spotlight Searches With Boolean Operators
Spotlight, the Mac's built-in search service, supports using the three Boolean operators AND, OR, and NOT within a query.
http://macs.about.com/od/usingyourmac/qt/spotlight.htm
Boolean Search Will Make Your Searches Smarter
If you've been trying to find a way to make your Web searches more sophisticated , effective, and streamlined, then Boolean searching is the way to go. In this ...
http://websearch.about.com/od/internetresearch/a/boolean.htm
Boolean Google Searches (AND or OR) - About.com
The term "Boolean" comes from Nineteenth Century mathematician George Boole. Boolean logic is used heavily in computer software, from 3D modeling ...
http://google.about.com/od/searchingtheweb/qt/booleantip.htm
The IF Statement - JavaScript - About.com
Relational operators compare two variables (regardless of type) and evaluate to a boolean value (true or false) and; Logical operators compare two boolean ...
http://javascript.about.com/library/bltut04.htm
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