### Articles related to boolean expressions

**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.comSimple

**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

The Curious Case of the Flip-Flop - Ruby - About.com

These types of flip-flop

**expressions**look at bit different. First, they're ... Second, the left and right of the Range expression itself are usually**boolean expressions**.http://ruby.about.com/od/convolutedconstructions/ss/The-Curious-Case-Of-The-Flip-Flop.htm

**Boolean**Algebra and Logical

**Expressions**for Visual Basic

**...**

Complex logical

**expressions**are not often required in Visual Basic programs, but ... guide to the most popular and useful techniques such as**Boolean**Algebra, ...http://visualbasic.about.com/od/usingvbnet/a/bleanalg.htm

Beginning Lambda

**Expressions**- An Intro to Lamda in VB.NETIn fact, getting started with lamda

**expressions**is really easy. This article ... Notice that both return a**boolean**type (True, in this case, after converting to string).http://visualbasic.about.com/od/usingvbnet/a/lambdaexpr.htm

What Does

**Boolean**Search Mean? - Web Search - About.comWhat is

**Boolean**search? Find out what it means to use**Boolean**search, and learn to search more effectively by using specific search operators.http://websearch.about.com/od/2/g/boolean.htm

Conditional Operator Definition and Explanation - Java - About.com

Conditional operators are used to evaluate a condition that's applied to one or
two

**boolean expressions**. The result of the evaluation is either true or false.http://java.about.com/od/c/g/conditionaloperator.htm

The Double Bang Operator: !! in Ruby - About.com

It's technically not its own operator, but two unary bang (

**boolean**negation) operators strung ... The bang, or**boolean**negation operator, is a unary prefix operator that ...**Boolean Expressions**·**Boolean**Operators · TrueClass, FalseC...http://ruby.about.com/od/beginningruby/fl/The-Double-Bang-Operator.htm

Conditional Statements - Ruby - About.com

If the

**boolean**expression X is true then perform X, otherwise perform Z. ... Any**expressions**can be used in place of X, even those using**boolean**operators.http://ruby.about.com/od/control/a/Conditional-Statements.htm

Operators, Operands, and

**Boolean**Logic - PHP/MySQL - About.comBut in programming it's not THAT simple, the operands can also be variables,
strings, other

**expressions**, or**Boolean**values. So for example a + 5 = b - 6, the ...http://php.about.com/od/learnphp/a/A-Basic-Understanding-Of-Operators-Operands-And-Boolean.htm