December 2014
Intermediate to advanced
164 pages
2h 14m
English
Content preview from Ruby Quick Syntax ReferenceBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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CHAPTER 7
Booleans
Booleans within Ruby are actually known as parts of the TrueClass and FalseClass, rather than a Boolean Data Type as such. It is worth noting that nil (Ruby's version of a null) is not a Boolean.
2.1.1 :001 > true.class => TrueClass2.1.1 :002 > false.class => FalseClass
Creating Boolean Values
Creating a Boolean value within Ruby is similar to creating a String/Numeric value. You simply set a variable to the value required (true or false):
2.1.1 :001 > test = true => true2.1.1 :002 > puts testtrue => nil2.1.1 :003 > test.class => TrueClass
Expression Tests
Within Ruby a number of expression tests return a Boolean value; which ...
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