May 2003
Intermediate to advanced
566 pages
27h 29m
English
Content preview from Cocoa in a Nutshell
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Name
NSLogicalTest — Mac OS X 10.0
Synopsis
Instances of this class represent logical operations—such as
AND, OR, and NOT—on a set of Boolean tests. These
Boolean
tests are represented by instances of the class
NSSpecifierTest. Instances of this class are
initialized with one of three initializers:
initAndTestWithTests:,
initOrTestWithTests:, and
initNotTestWithTest:. The AND and OR initializers
both take an NSArray of test objects, while the
NOT initializer requires only one test object. When an
NSLogicalTest object is evaluated (by receiving an
isTrue message), it sends
isTrue messages to each of its component test
objects, and then evaluate those results based on the type of logical
test being performed.
|
|
@interface NSLogicalTest : NSScriptWhoseTest
|
// Initializers
|
- (id)initAndTestWithTests:(NSArray *)subTests; |
- (id)initNotTestWithTest:(NSScriptWhoseTest *)subTest; |
- (id)initOrTestWithTests:(NSArray *)subTests; |
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.