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Otherwise, members that are added via macro expansion will not be visible in other source files.
13 lines
191 B
Swift
13 lines
191 B
Swift
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struct DogObserver: Observer {
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typealias Subject = Dog
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}
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func observeDog() {
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let dog = Dog()
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dog.name = "George"
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dog.treat = Treat()
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dog.bark()
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dog.addObserver(DogObserver())
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}
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