An abstract class that provides the basis for testing specifiers one at a time or in groups.
SDK
- macOS 10.0+
Framework
- Foundation
Declaration
class NSScriptWhoseTest : NSObject
Overview
NSScript is an abstract class whose sole method is is. Two concrete subclasses of NSScript generate objects representing Boolean expressions comparing one object with another and objects representing multiple Boolean expressions connected by logical operators (OR, AND, NOT). These classes are, respectively, NSSpecifier and NSLogical. In evaluating itself, an NSWhose invokes the is method of its “test” object.
You shouldn’t need to subclass NSScript, and you should rarely need to subclass one of its subclasses.